Buy ETF after hours? Presidential Election

[flyersman]

So I have a Fidelity account and typically buy monthly chunks of Fidelity Total Funds (FSTVX).

It looks like the S&P futures have tanked tonight.

Would I be a to put in a limit or market or for ITOT ETF tonight to catch any gains tomorrow?

I know if I out an order in for FSTVX index fund it wouldn't execute until tomorrow market close.

Also how do you price an ETF after markets?

[fattest_foot]

I feel like everyone sees this as a buying opportunity due to Brexit, and no one wants to miss it.

How solid are overnight futures? Is this a situation where it bounces back by the morning and it doesn't work?

[Gonzo]

ETFs listed on American exchanges are not currently trading. You can buy futures now.