Excellent. Another dark pool for people who think that they are safe. There are already have a bunch of these, Crossfinder, Liquidnet etc.
Here's how you game them without being detected. Have your long term hedge fund/mutual fund department set up an connection to that market. Make sure that you only do long term investing on these venues (e.g., buy blue chip stocks that have low PE) so that they don't ban you.
Now you feed the information about displayed liquidity on high volatility stocks that you are interested in trading (e.g., small biotechs) from those exchanges. Especially this new one that isn't even a dark pool but has displayed liquidity.
Now next you use that information to front-run the mutual funds who are trying to execute their VWAP in other exchanges such as BATS. Most investors don't have access to dark pools and dark pools aren't obligated to conform to NBBO, so you could get cheaper shares elsewhere and sell when the VWAP is reported in the next hour/end of trading day by dark pools.
Other way you can play this is play the liquidity rebate game. So much rebate, $.14/100 shares. Just trade C all day long, high liquidity, low slippage. Offer and buy back at same price as long as C doesn't slip too much. Guess who's paying for the rebates, the mutual funds who's taking the liquidity. Wall Street, what a scam.
Typical stock exchange is a lot of like eBay bidding auction. A full-depth of quote book is maintained for the best and near-best bid and offers. When a buyer's highest bid price matches with a seller's lowest offer price matches, an transaction is made. For those bids and offers that are below/above the current market price, they are kept on the books.
Now HFT algorithms, daytraders and market-makers all monitor this full-depth book for patterns whenever a large order is coming in. Suppose I'm a Fidelity Investment trying to acquire 5 million shares of MSFT for my $20 billion mutual fund, if I just put that huge order out there on the order book. Everyone else will jump in and buy MSFT; front-running me because stock market is like everything else, supply-and-demand; when there's a huge demand and you buy the supply ahead of time, you can charge more and make profit.
So to disguise my huge order, mutual funds prefer dark pools where the full-depth of books are not maintained. Instead, it's like shooting fish in the dark. A big mutual fund wants to buy 5 million shares of MSFT at 25, another big fund wants to sell 5 million shares at MSFT at 25. You submit your order to that market totally blind because there's no quote book and just have to see if your order gets filled. But the positive side is that no one could see where the market demand and supply is, so the mutual funds gets their orders filled and not front-runned. Dark pools also typically limit their participants to large institutional investors to limit the information because what HFT firms used to do is to "ping" the dark pools, send out random orders to buy 1 share of MSFT at a certain price to see if there's a "whale" order out there and then proceed to front-run. So lots of them got banned.
Now, the problem with dark pools is that there are sometimes not many people who trade on it because it's "dark," kind of like egg-and-chicken problem, no one could see the full-depth of book and so don't put their orders out there. That's what's called lack of "liquidity". Exchanges want to have people trade, because the higher volume, the more people will come and trade on that venue and the more money they make. So this "light pool" tries to fix this problem by having "displayed" quote book but the market participants are still limited and regulated still to make mutual fund participants comfortable about not being front-runned.
Well, as the saying goes, "it's never illegal unless you get caught"; so suppose if you are a huge fund or a bank with a HFT prop desk. You could register your mutual fund section with this "light pool" for its displayed liquidity. Now, you might even do some real trades on the exchange to make everything legit; but feed the market data section for your HFT prop desk which is registered with a totally different LLC designation, and have that fund execute orders on other exchanges based on information from this "light pool" (e.g., whale buy order on IBM on "light pool," front-run IBM on BATS).
Now for liquidity rebates on these exchanges, exchanges are now locked in a bitter battle to see who can attract the most volume and trades (because it's a snowball effect, more volume, more interested traders who come on to trade, more money). So they offer "liquidity rebates" for traders who put orders out there on the full quote-book because the more entries on a exchange's order book means that there are greater potential for greater volume on a exchange. A more concrete example is, let's say I'm a liquidity rebate trader on Citigroup (NYSE: C); C is last traded at $4.30, with national's best bid at 4.29 and national's best offer at 4.30 (NBBO). So I could submit out a sell order for C at $4.30 on the exchange's quotebook (I don't have to physically own C, I could short sell the stock). Now although NBB was at 4.29, someone might come alone and they are really impatient and submit a market order to buy C at $4.30 and they hit my order; now they are "taking" liquidity that I put out there on the market. So they are paying the exchange for the liquidity for doing so, typically, $0.02-$0.05/100 shares and to encourage more liquidity providers like me, the exchange passes some of that profit to me, $0.01-$0.03/100 shares.
Now a stock like C is heavily traded, there are literally thousands of orders on C's quotebook just between $4.30 and $4.29; suppose that a bad/good news come out on Citigroup, many of the traders who have their offers to buy or sell C at these cents increments might not all cancel their orders to adjust the valuation of C to the new news. This is called "low slippage," that in a high volatile event, you could trade out of your positions very easily with no "slippage" as trading in a small cap stock where in a volatile event, no one's willing to trade with you.
This is perfect for a liquidity rebate trader who literally goes around all day, offer to sell C at 4.30 and then buying back their short C shares at 4.30. They break even on the trade and get to collect $0.02-$0.05/100 shares liquidity rebates. So you do this over and over again on the market, generating higher volume on the exchanges and get to collect more rebates and everyone's happy at the expense of the liquidity takers. Now, with this exchange, the liquidity rebate is at $0.14/100 shares because they want to be attractive to the liquidity rebate crowd and generate lots of volume; and because the rebate is high, you could afford even higher slippage on C.
This comment seems to be off the mark at a number of levels -- I love hacker news, and am doing this to return some of the value I have gotten from the community here.
Take "e.g., buy blue chip stocks that have low PE) so that they don't ban you. .. Now you feed the information about displayed liquidity on high volatility stocks that you are interested in trading (e.g., small biotechs) from those exchanges.."
If you are trading blue chips at an illiquid (CSFB run) market center what information will that give you about "small biotechs"?
".. dark pools aren't obligated to conform to NBBO" : this is an incorrect understanding of how US stock markets work -- dark pools, with exceptions that don't count for too much volume, will have to print at the NBBO (Reg NMS, Rule 611, if you want chapter and verse http://taft.law.uc.edu/CCL/regNMS/rule611.html).
Also you don't need to trade at this venue to see what is being traded there: another provision of Reg NMS requires all ATSs to print within a short period of time into the tape, which is also by law disseminated nationwide as the last sale info in the name. By simply looking to see prints from this center, and which side of the midquote the prints are on (called the Lee-Ready test in the field, after a 1991 paper by those guys) will tell you if there are long duration buy orders or long duration sell orders active.
Turning to the merits of the proposal above, seems like a good idea, although the fact that csfb (or any big bank) is running it will cause most experienced traders to be skeptical of the exalted rationales being presented. If a broker that is handling flow runs a market center as well, without exception they wind up abusing the flow or the market center to make more $$.
Have read a lot of good stuff here; keep up the good work, all.
Kudos to doing and citing the research. You are right, every exchange has to conform to NBBO. But some of dark pools don't necessarily keep quotebooks to be coy, they instead keep a book of "IOI" (indications of interests). So in an event where a regular trader get a better price at dark pool versus say BATS/INET, their order wouldn't get redirected to dark pool for execution at NBBO. But if a trade does happen between the participants in a dark pool, if a third-party exchange can offer better price then the pool is obligated to redirect to that market to fill at that price.
Your second point of RegNMS requiring exchanges to print all their trades. Dark pool report their trades in their own idiosyncratic way. Suppose a large block order went down, I and my counterparty could agree on a VWAP price and just slowly complete our trade over the course of the day or even several days to obscure the order from the market. So reporting might be done, but it might be done as slow and as obscured as possible.
And talking about Credit Suisse, CSFB and other banks used to have a suite of VWAP algo's for their customers but they have curiously not updated the algo in the past 4 years. Why not? CSFB's internal trade desk probably is probably constantly developing better algo's but because they want to keep their own customers from having better market obfuscation and be able to front-run; they don't release these tools to their customers.
I like that this innovation is market-driven and introduced as a competing alternative, rather than imposed on existing markets in the form of regulation.
It will be interesting to see if this market provides better pricing for non-HFT participants.
The HFT outfits claim they net out to better pricing for all ("liquidity benefits"), but that's somewhat hard to swallow given that they're acting as giant money sinks on the market system.
HFTs demonstrably are liquidity providers. That's a technical term with a real meaning: liquidity is the ability to trade when you want to trade in the quantity you want to trade it, and it most certainly is not a natural property of the market; in order to buy an instrument, someone has to be willing to sell it.
Meanwhile, what is a "giant money sink", and how is that what HFTs are? I see how HFTs cut out the middlemen who used to profit from volatility, but the low-tech traders they replaced were not themselves value investors.
How would one demonstrate that HFTs actually provide liquidity? They get into and out of positions in milliseconds in a race with other HFTs to front-run a trade that was about to happen anyway. If they facilitated trades that were otherwise off the table, they wouldn't need to shave their latency hard, because there wouldn't be anyone else trying to make the same trade whom they'd have to beat. We should be compensating people for making better routing decisions with society's capital, not for making the same decisions but 1/100,000 of an hour sooner.
And formal market makers accept an obligation to stay in the market and provide full-time liquidity in return for their profits. I have to question the value of displacing and de-funding them in favor of HFTs who can walk away at the worst moment (as when they exacerbated the flash crash).
> If there are n people in the market moving money around in a closed system then the combined wealth of those n people is constant.
> Admittedly this relies on money not being created or destroyed, which may cause the model to be a poor approximation of reality.
What investment markets provide is a way for firms to increase their productivity. Think of the farmer who has a bucket, a stream, and an acre of land. The economic pie gets a lot bigger if the farmer can secure an irrigation system.
The farmer can solicit the banker in town for a loan, or he can enter a debt offering into large market or exchange. Investors are more likely to invest if they know that they can exit their investment freely. i.e. there is liquidity, so they can sell their investment as their own needs dictate.
You can argue that getting equity pricing right helps companies with their access to capital, but once you have the pricing right at 100ms I don't understand what value HFT firms are adding by pouring money and talent into getting the pricing right at 10ns.
It seems like such an obvious win for society to mitigate the winner-take-all incentive of being first to market on a pricing disparity.
That's slippery slope logic. If the pricing is right at 1s, why pour money and talent into getting it right at 100ms?
What's the win to society to "mitigate" an "incentive"? Is the problem volatility? Other forces create huge volatility. Should we penalize anything that creates volatility? Maybe we should end all program trading?
Meanwhile, you're effectively vouching for a comment that models the markets as a closed system of people dividing up a single pot of money. Isn't it plain that such a model is wrongheaded?
What's the win to society to "mitigate" an "incentive"?
The main incentive is reducing time and energy devoted to a zero sum game.
A hypothetical: imagine a sunken pirate ship is discovered. Now suppose 10 crews of divers get into a race to retrieve the pirate gold. It's useful to society to bring up the gold. It might be useful to society to have a race between 2 crews to bring up the gold, to make sure the first crew doesn't dilly dally. The gain to society is $GOLD - 2 x $DIVER_COST, or perhaps $GOLD_AFTER_LONG_DELAY - 1 x $DIVER_COST. On the other hand, having 10 crews of divers all competing for the gold is pointless - the gain to society is $GOLD - 10 x $DIVER_COST, which is 8 x $DIVER_COST less than if 2 diver crews chased the gold.
HFT is basically the same situation as the race for pirate gold - a lot of smart people in a race to create a fixed amount of alpha. We might be better off if they were creating new alpha elsewhere instead of all simultaneously chasing after the same alpha.
(That's not to say I'm advocating a ban on HFT on this ground. A certain amount of effort devoted to HFT is certainly a good thing, and I doubt the government would get things right. I just don't think the market is getting things perfect either.)
So this argument makes a lot of sense, but you see that it's not the argument that's being employed against HFT in general, right?
What I see are a lot of people arguing that the HFTs are getting an unfair edge on other traders, as if some main street stock picker was actually in competition with an HFT prop trading shop.
My sense of it is that many of the people making this arguments believe that were it not for HFT's, people would have frictionless access to a real efficient price for any instrument they wanted to buy, when in fact they'd just be dealing with a much clunkier and less reliable set of middlemen.
I know this is an uncommon argument against HFT - I've only heard Tyler Cowen pushing this argument, but it's the one I find most plausible.
As I said, a certain amount of HFT is a good thing. If I thought it was harmful, I'd quit my job as an HFT programmer and find something else [1]. I'm just pointing out that there are costs, which don't necessarily outweigh the benefits after a certain point.
[1] This was a major reason why I quit my job as a postdoc, rather than trying to become a professor. I believe college is mostly rent seeking and I don't feel it's right to participate in that.
So you left academia to become an HFT programmer because you thought academia was too unproductive in the context of larger society? That's one hell of a scathing critique of academia and, er, um, I can't help but wonder if the money might have had something to do with it?
Actually, the money wasn't a major factor. It's piling up, but I literally have no idea what to spend it on.
Here are my opinions from when I was an academic (I've only been working in HFT since March 2010, full time since May 2010):
My opinion from 347 days ago: universities have vastly more problems than that. They are huge bloated organizations structured around funneling money to employees (from both students and the government) rather than educating students. The main reason people still go is for status signaling purposes, otherwise they would have been replaced long ago.
From 406 days ago: a $10 million grant; my university will take about $5 million off the top in "overhead" (to be spent on overpaid administrators, student stress counselors, the latino student center, and maybe even education).
(This was roughly the period when I decided to leave academia.)
From 469 days ago: The job description of "professor" is certainly a strange beast: teacher/scientist. It makes about as much sense as actor/programmer...The perverse incentives this creates are massive. Universities hire scientists rather than teachers in order to get their hands on half the scientist's grants. Scientists waste their time masquerading as teachers... This is harmful both to science (I'm not doing research in class) and students...Actual teachers are squeezed out, since there is no room for them.
From 999 days ago: Another part of the problem is that there is no incentive for cost control in the university...I'm currently teaching a "Quantitative Reasoning" class right now. Basically, take Weeks 1-2 of Prob&Stat and expand it to fill a whole semester (half a semester, due to poor planning and miscommunication). Some of this is my fault, some of it not...Plus, my students are all art/history/literature majors, and just don't need it. Everyone in the room would be better off keeping their $4,000 and not sitting through my class.
As a fellow HFT programmer I sort of think of HFT as another asset class: eventually (as more divers go for the gold) the returns will be on par with alternative asset classes. This is the beauty of capital investment and the free market--if an industry produces outsized returns, then capital/resources/effort will be poured into that industry until the returns diminish.
That's slippery slope logic. If the pricing is right at
1s, why pour money and talent into getting it right at
100ms?
I'm saying there are negative externalities[1], which are known to cause market inefficiency. Negative externalities typically look like "slippery slope" arguments, when in reality there is an appropriate level of penalty/tax/etc that restores efficiency.
Meanwhile, you're effectively vouching for a comment
that models the markets as a closed system of people
dividing up a single pot of money. Isn't it plain that
such a model is wrongheaded?
I'll concede it's not zero-sum, but surely you also will concede diminishing returns to liquidity. I'll also concede that my original "money sink" comment was hyperbolic & inflammatory.
Actually, trading can and does increase the total value of the system. If I own $100 of Intel stock and you own $100 of AMD stock, exchanging half of our stock (so that we each own $50 of Intel and $50 of AMD) leaves us both better off, since we each have less risk.
I'll agree that 100ms to 10ms difference probably isn't a social good, but if a certain amount of money is due to a group of people for their role in providing liquidity and they choose to collectively wast a fraction of it on cutthroat zero-sum competition with each other I'll say thats sort of a shame, but I don't really think its anything I need to worry about.
Your argument is silly for the following reason. Imagine that a firm was able to profit from discrepancies between values of two stocks that last 100 microseconds. Say this firm makes 1 billion dollars a year - it pays 350 million in corporate taxes to society, which is one direct way to measure the value it is adding. Looking at it differently, what value does a pizza cutter provide to society? why not ban pizza cutter production? Why can't people cut pizza with a knife? instead of having all those smart engineers work on making pizza cutters, let them make something worthwhile. Follow this line of reasoning to its logical conclusion and you end up with Soviet Union circa 1975 - i.e. system that does not work
> I see how HFTs cut out the middlemen who used to profit from volatility
One current big controversy among economists is whether the HFTs themselves have an effect on volatility (there are studies claiming all of "increases", "decreases", and "have little effect", but the evidence for any of those conclusions is weak, and it depends on exactly how you define volatility). A liquidity provider who provided added liquidity on very short time scales, but at the expense of increased volatility at longer time scales, wouldn't necessarily be advantageous for longer-term market participants. That'd be essentially trading one kind of noise for another one--- less millisecond variation, and more occasional giant aberrations, if indeed things like the May '10 "flash crash" were caused by HFTs.
My reading of the SEC/CFTC report is pretty much the opposite of "absolved", though they consider HFTs only one factor magnifying the spike, rather than the initial cause (i.e., consider HFTs a volatility-increasing factor).
From the report's punchline:
The combined selling pressure from the Sell Algorithm, HFTs and other traders drove the price of the E-Mini down approximately 3% in just four minutes from the beginning of 2:41 p.m. through the end of 2:44 p.m. ... HFTs began to quickly buy and then resell contracts to each other – generating a “hot-potato” volume effect as the same positions were rapidly passed back and forth. Between 2:45:13 and 2:45:27, HFTs traded over 27,000 contracts, which accounted for about 49 percent of the total trading volume, while buying only about 200 additional contracts net.
HFTs don't like to hold stuff at the end of the day. Or hour, nay second. Further, HFTs that stayed in (some were obligated by their market-maker contracts with major exchanges to do so) helped the recovery back up.
IMO this is a ridiculous solution to the problem - rather than creating a market that's set up in a way so that high frequency traders can't get an edge (for instance, creating a market structured so that money/speed/location/regulatory status doesn't actually give you any advantage in trading), they're just banning anyone that doesn't fit their definition of "value trader" from the market.
It will be interesting to see if this market provides better pricing for non-HFT participants.
Given that the only difference between this and a normal market is that a bunch of people offering to buy and/or sell at prices more favorable than the current inside bid/ask are banned from the market, I'm going to go out on a limb and say that no, it won't help pricing very much.
Or, rather, what it will do is move profits that would have gone to the HFT firms and shift them to people placing normal, non-speculative/exploitative/high-frequency limit orders.
Which means that really, there will be an arms race to figure out how to place orders that are as exploitative as possible without tripping the banhammer. The people that push the closest that limit will make the most money, but spreads will still likely be quite a bit higher than in an unfettered market if the rules have any teeth at all - long term value traders are not good at keeping spreads thin, I'd guess that in the current markets their effects on spreads are not even measurable at all, they are so insignificant...
I honestly didn't read it closely, but apparently you didn't either. Your assertion:
Given that the only difference between this and a normal
market is that a bunch of people offering to buy and/or
sell at prices more favorable than the current inside
bid/ask are banned from the market, I'm going to go out
on a limb and say that no, it won't help pricing very
much.
compare that with:
Since trading on Light Pool will be more expensive and
slower for those firms, they’re not likely to use the
ECN, reducing the negative selection investors
experience, Galinov said.
Contributors, which will include long-term investors,
will receive a “significant” rebate when they trade
against orders resting in Light Pool, while neutral
firms, or those whose behavior falls between the other
groups, may or may not get one, Galinov said.
So they are trying to get incentives right, rather than outright banning HFTs. Just slowing down the market may be sufficient, try reading this:
http://ai.eecs.umich.edu/people/wellman/?p=40
(disclaimer: it's from my Ph.D. advisor, so I'm slightly biased)
Opportunistic firms, which Galinov says include some high- frequency trading companies, will be kicked off the platform and prevented from providing orders or executing against bids and offers directly through Light Pool. They’ll instead have to go through the Jersey City, New Jersey-based National Stock Exchange, where Light Pool will also publish its quotes.
Am I the only one who thinks this is pointless? I don't trade billions of dollars of equities, but I am a long-term investor.
One of my big rules as a long-term investor is that I can't sweat the 1/8ths and 1/4ths (borrowed from Philip Fisher).
The time I spend worrying about these high frequency traders getting a few extra cents out of me is time wasted finding great companies that are selling at a discount.
Sure... Its annoying, but if you really are a long-term investor a few tenths of a percent won't kill you.
'Uh, no. No, you don’t understand. It’s uh– it’s very complicated. It’s uh– it’s aggregate, so I’m talking about fractions of a penny here. And, uh, over time they add up to a lot.' -Peter Gibbons
Through competition among each other, aren't the HFTs reducing overall arbitrage opportunities in markets? Therefore, as a small-time, long-term investor, aren't I enriched by a highly-competitive steady-state level of HFT market participants?
What exactly is the incentive for reducing high-frequency trading? People are offended that computers can make investment decisions better than humans? Computers making trades is not "really" investing?
Markets are based on trading. If there are no trades, there are no markets. If you want to buy 1000 shares of ABC company, and nobody has 1000 shares, guess what, the trade is not going to go through. This is what will happen on a restricted market.
Similarly, high-frequency trading means price corrections occur more quickly, meaning that when you buy or sell security foo, it is more likely at the correct price. Now you can argue that nobody really knows the correct price, but that is orthogonal. (Computers make mistakes, but so do people. There are some markets that are still not made on exchanges, and they are subject to the same whims that the equity markets are. Computers are buggy. People are irrational.)
My guess is that this market is for people with a lot of money that like to talk on the phone with bankers. They will get a "safe" investment (or so the dude on the phone says), and Credit Suisse will get a nice cut. Hint: whenever a bank invents a product, the main idea usually revolves around them getting a cut.
I think Credit Suisse is just spreading FUD, so they get people to trade on their own market, instead of some upstart HFT firm. Every new rule and game is just another money making opportunity for a opportunistic firm.
Actually since it is aimed at institutional investors such as mutual funds, hedge funds, pensions and endowments this will force you to buy mutual funds instead of being an individuall long term investor.
That is a totally different discussion. The title of this article is misleading since the exchange that they are creating for supposedly, value investing, doesn't really allows any value investor now, does it? Other than of course institutions.
Exchange A: Price you can BUY ACME Co. = $34.50
Exchange B: Price you can BUY ACME Co. = $34.45
Exchange B: Price you can SELL ACME Co. = $34.40
Exchange A: Price you can SELL ACME Co. = $34.35
Sure, but what would the people paying more be getting? Less volatility? More assurance that their price is closer to long term averages? How is that possible?
Is this possible because the market maker ensures some kind of buffer from the HFT shops in exchange for a bigger spread?
I think you're generally right that people would normally choose the better prices. A few hypothetical reasons why someone might not could be: once fees/commissions are included the exchange with the worse price could actually be cheaper; an exchange might offer a rebate based on volume so trading on the more expensive exchange could help someone gain a larger rebate; if you wanted to trade a large quantity immediately in one order, and your quantity was greater than the quantity available at the best price, then you'd need to eat into the order book, and the resulting average price might be cheaper on the more expensive exchange; you might be banned from the cheaper exchange and so would have to trade on the more expensive one.
Near as I can tell, fees will be high enough so as to make the arbitrage unprofitable.
I believe the mechanism going on here is this:
Big Traders offer to buy at $10.00 on Light Pool. Their offer sits there, and gets filled slowly over time. Then, for whatever reason the price moves, and a bunch of speed traders try to sell on INET/ARCA/BATS at $9.99 (perhaps in anticipation of the market moving down to $9.90). Due to the high fees, they don't place those orders on Light Pool. The market crosses for a little while, no trades occur, and Big Traders get the opportunity to pull their $10.00 order from light pool.
However, the article wasn't clear enough for me to be certain.
Whenever you see a stock price it is always the price where the stock last changed hands. If the stock is lightly traded then the last trade may have been for as few as 100 shares. So what is the price if you want to buy or sell 200,000 shares of that stock? I am sure it is not the last quoted price. They are setting-up a market where slower and bigger trades can take place
They're not shafting anyone, no one will be obliged to trade on this market. People are only going to trade on it if they believe they'll gain some advantage through doing it - so conversely you could argue that by offering this service Credit Suisse are doing their customers a favour.
dear god, how tired I am of this "no one will be obliged" argument!
no one is obliged to have an iphone or credit card too. that doesn't mean that a lot of people can't have them, and the fact that they got them voluntarily (or more likely trough carefully crafted advertisement) doesn't mean that companies providing them can now do as they wish with their customers!
believe they'll gain some advantage through doing it - so conversely you could argue that by offering this service Credit Suisse are doing their customers a favour
you're doing your customers a favor when you're actually giving them some advantage, not making them believe in you doing so.
A market participant will choose which exchange to execute a trade on based on their analysis of those exchanges. If for a particular trade they decide that out of all the exchanges, darkpools and this new lightpool available to them that the exchange that is most suited to that order is the lightpool, then they'll probably route it there. What do you expect them to do? If you're going to buy or sell something then there's an associated cost to doing that whether you do it on the NYSE, in a darkpool, or in this new lightpool.
Credit Suisse don't 'own' any customers, people who trade on this exchange will have no obligation to trade there, it sounds like you think that there are people who are forced to trade through Credit Suisse and so will be forced to use an exchange run by Credit Suisse. That is not the case. If they don't like what is on offer at Credit Suisse then they can trade directly in a market, or they can use another broker.
Here's how you game them without being detected. Have your long term hedge fund/mutual fund department set up an connection to that market. Make sure that you only do long term investing on these venues (e.g., buy blue chip stocks that have low PE) so that they don't ban you.
Now you feed the information about displayed liquidity on high volatility stocks that you are interested in trading (e.g., small biotechs) from those exchanges. Especially this new one that isn't even a dark pool but has displayed liquidity.
Now next you use that information to front-run the mutual funds who are trying to execute their VWAP in other exchanges such as BATS. Most investors don't have access to dark pools and dark pools aren't obligated to conform to NBBO, so you could get cheaper shares elsewhere and sell when the VWAP is reported in the next hour/end of trading day by dark pools.
Other way you can play this is play the liquidity rebate game. So much rebate, $.14/100 shares. Just trade C all day long, high liquidity, low slippage. Offer and buy back at same price as long as C doesn't slip too much. Guess who's paying for the rebates, the mutual funds who's taking the liquidity. Wall Street, what a scam.