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even every 1s. If we can do auctions for web ads, we can do auctions for the stock exchange.



> even every 1s. If we can do auctions for web ads, we can do auctions for the stock exchange.

There was ~$107 billion in online advertising in 2018. There was ~$145 billion traded in Nasdaq listed equities yesterday.

Global financial markets and online advertising have different requirements.

[0] https://www.marketingcharts.com/advertising-trends/spending-...

[1] http://www.nasdaqtrader.com/Trader.aspx?id=DailyMarketSummar...


> There was ~$107 billion in online advertising in 2018. There was ~$145 billion traded in Nasdaq listed equities yesterday.

That is a pointless comparison. That $107b was all revenue for somebody (Google, Facebook, etc), while the $145b was just the nominal value of shares traded.

(edited typo)


> That is a pointless comparison.

I was highlighting the difference between online advertising and financial markets. They operate at different scales.

> That $107b was all revenue for somebody (Google, Facebook, etc), while the $145b was just the nominal value of shares traded.

These are cash instruments, not derivatives, so that is indeed $145b of cash changing hands each day.


I’ve worked in both. For the purpose of the earlier conversation, the auctions for ad exchanges happen at about 1 order of magnitude more than for exchange tradable symbols.

That is to say there is no tech reason that financial exchanges couldn’t run auctions.

Aside: personally I think that continuous exchanges are great & people who have problems with them usually don’t know what they are talking about.


not necessarily, money has velocity; market participants don't have $145B to spend, they spend a fraction of that and then reconcile balances at the end of the day.

see https://en.wikipedia.org/wiki/Clearing_(finance)


How is the 145 billion calculated? If I buy and sell with a 100$ 100 times does that count as $10,000 or $100?


The number quoted is total volume, so it would be $10k




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