Trigger orders on other stocks?

Alpaca Trading
#1

If I want to submit a limit order of MSFT that, when it executes, will trigger a market order on SPY, is this possible?

I see that there are OTO orders that can trigger subsequent child orders, but only for the same instrument.

#2

Hi, you could do this with code. you could listen to trade_updates and when your first order is filled, you could submit a new order

OTO is not relevant for this case (nor OCO or Bracket)

#3

I certainly could do the subsequent order submission in code, but an OTO child market order would be submitted and filled faster. Sometimes that latency is important.

#4

yes of course but that is not the purpose of the OCO order. it’s for the same stock, not to trigger other stocks