Many funds do make revenue with share lending. I don't know that there's enough lending to get expenses below zero, at least as of yet, though.
Also, sometimes the lending revenue is just added to the fund, rather than being used to offset expenses. The end result is the same, but the accounting numbers look different.
As a result, when comparing two index funds that track the same index, you should look at actual total returns rather than quoted expense ratios.
Also, sometimes the lending revenue is just added to the fund, rather than being used to offset expenses. The end result is the same, but the accounting numbers look different.
As a result, when comparing two index funds that track the same index, you should look at actual total returns rather than quoted expense ratios.