Comment by loehnsberg
2 days ago
Assuming you add all the annoying details that algo trade execution brings, the algorithm still provides the answer on which position to take within a few microseconds, which is what you want if you trade in a limit order book.
true, you want microsecond decisions at the core, no doubt ; but that’s only half the game. an ideal action in clean memory isn’t the same once it hits fragmented liquidity, stale quotes, partial fills. if the algo doesn’t account for execution drift or book pressure post-placement, the microsecond edge fades fast. so yeah, fast compute’s necessary but not sufficient without modelling the messy tail end too