I saw a few (2?) passively managed index tracking funds in my former employer's 401k plan. IIRC their fees were something like 0.15%/year, which is higher than

I saw a few (2?) passively managed index tracking funds in my former employer's 401k plan. IIRC their fees were something like 0.15%/year, which is higher than the <0.1%/year fee of the large index tracking funds with market caps greater than $40BB, but still reasonable compared to the actively managed funds that are offered.