The incentive to profit lures in day-traders.
Day-traders provide liquidity which lures in fundamental investors*.
Fundamental investors make prices (more) informative.
Informative prices send accurate signals to economic agents which helps them best choose amongst scarcity.
The act of creating informative prices is a critical economic service because distorted prices lead to the misallocation of scarce resources which destroys wealth.
So yes, day-trading is a productive activity. Albeit, indirectly.
*By fundamental investor, I mean *informed* fundamental investors - profitable institutions, hedge funds, banks, large independents.
Day-traders provide liquidity which lures in fundamental investors*.
Fundamental investors make prices (more) informative.
Informative prices send accurate signals to economic agents which helps them best choose amongst scarcity.
The act of creating informative prices is a critical economic service because distorted prices lead to the misallocation of scarce resources which destroys wealth.
So yes, day-trading is a productive activity. Albeit, indirectly.
*By fundamental investor, I mean *informed* fundamental investors - profitable institutions, hedge funds, banks, large independents.