I've been trading SPY over night, when it's above the 20D MA, with some success, but the inability to place a stop loss overnight keeps me up. I'm wondering if trading 2 MES for every 100 shares of SPY would alleviate this worry, and if so what are the caveats, as I've never traded a micro contract.
The only caveat is expiration date, and performance bond requirements. That's it. Get past that and you are golden. Although 2 MES for every 100 shares of SPY? I think your ratios are off a bit. You sure you do not mean 1 ES for every 100 SPY shares? Hell do I know about ETFs.
Yes, 2 MES covers 100 SPY. Here's how to calculate properly. Be sure to use MES inputs. https://tastytradenetwork.squarespace.com/tt/blog/equating-futures-to-etfs
Yes, you are correct. I suppose 100 SPY shares would be best offset by 1 MES. How the hell did people survive this nightmare before the micros were introduced 2 years ago, on May 5th, 2019.
Does MES have enough liquidity for you during those overnight hours? That might be something you want to verify.
I can answer that with a resounding yes, if you are pushing small size like 2 contracts. Hell yeah the liquidity is there. Fills will be no problem. And I do it on forward months. Front months are no problemo.