> Robinhood also earns money from rebates its gets for directing its order flow to broker dealers, though Bhatt insists “We do not sell data to anyone. We have never sold data to anyone. We just do not do that.” Just so everyone knows, order flow from unsophisticated investors is considered a valuable resource because, when filling it, you know that you're more informed than the person trading against you.
I'd say its more correct to say orders from retail investors are valuable because:
1) They tend to be a relatively equal number of buys and sells. This is figurative manna from heaven for market makers
2) They don't mind crossing the spread, also a gift for market makers.
3) They can't really move the spread
and probably least importantly......
4) they aren't trading based on some sort of knowledge most of the time, ie they are typically just buying because they buy a bit each month or selling because they need money or selling to re-balance,
ie they aren't trading due to market signals, but rather due to their own personal situations.