Comment by graemep

Comment by graemep 2 months ago

How do they profit? There must be a cost somewhere? Another reply mentioned spreads - still a cost (you lose money when you trade).

matwood 2 months ago

AUM, managing high wealth clients, running their own funds with expense ratios (also some of the lowest in the industry), uninvested cash, etc... Retail trading is commoditized now.

Anyone who really cares about spreads will be using limit orders. Otherwise you're talking about pennies on highly liquid shares.

The fact that we're even discussing the possible spread differences between market makers shows just how commoditized retail trading has become.

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thefreeman 2 months ago

the sell order flow to market makers who gobble up the other side of bad retail trades

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xen0 2 months ago

I highly doubt market makers are in the business of betting against retail traders.
I suspect they're in the business of collecting the spread on lots of small trades that they can assume are largely random.

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- kortilla 2 months ago
  
  What you described is how you bet against retail traders. The bet is that they have no edge so it’s safe to run tight spreads and nice pure market making algos that assume random behavior at volume.
  
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  xen0 2 months ago
  
  Feels weird to call it a 'bet against' when the other side can (potentially) benefit from the tighter spread you offer.
  But yes, the market maker doesn't run the risk of trading with someone with knowledge and a lot of capital to apply it.
  
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  kortilla 2 months ago
  
  Yeah, I don’t like the phrase either, but market making in these pools is quite literally taking the other side of their trades.
  
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graemep 2 months ago

Which means that your cost is market maker's spreads instead of fees. Still a cost to you.

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- kortilla 2 months ago
  
  Nope, this is one of the counterintuitive things about people paying RH for order flow. Market makers can offer tighter spreads when they know it’s a pool of dumb money.
  
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  graemep 2 months ago
  
  tighter spreads are not zero spreads
  
  Reply View | 2 replies

eru 2 months ago

Low cost brokerages mostly earn money from the interest rate differential, ie what they pay from your un-invested balances vs what interest they pay you.