Fairly new to Omaha. I recently played a pot that surprised me after I looked up the equity for everyone. I had 9-10-J-Qss, one player had A-A-10-5ss and the last had 4-5-6-8ss. I knew if I played heads up against AA, I'd be a significant dog, but three way I wound up an extremely slight favorite. Aces were worst by a very slight percentage.

If you know a pot is going threeway all-in and hold a hand like mine, confident one player holds aces, should I be calling more? I'd typically fold. In this case, I called b/c I had already called a raise and wanted to gamble figuring my hand wasn't in terrible shape. I've never really thought enough about how pots are affected when more than two people are involved.

First of all, think about if you really want to get your variance up that much.

Secondly, if you have done the math and you are 50/50 sure you can take gamble, but I doubt, calculating rake that it will be profitable.

In fact, if you take rake into account, you should avoid getting it in preflop altogether as in PLO there will very rarely be situations where you are more than 60% favourite.
Exceptions being AAxxss type hands who are usually 60%+ favourites, against non-AA hands.
But if you get a reraise over your 3b it's usually another AA type hand so you'll want a K or Q to go with your aces, still then you will go down 50/50 to the flop and you want to see if you hit your draw or not.

a nut-flush draw on the board will make you a 65%ish favourite against the villain usually, depending on his possible straight draws evidently.

Anyway, in my experience, the way to win in PLO is play lowball, do some nut-mining and make them pay when you are a favourite.

Even with QJT9ss heads up against AA - lets say is mediocore ss AAx like AA73ss you have more than enough equity. Didnt do the math but i guess its like 40-45-x. that said if he doesnt cover your flush outs.

prime example is when both villains have AAx you are a fav with ss rundowns. dont take my exakt word on that. can do the math when youre not lazy

Don't fold QJT9 preflop.

Ever?

I can think of ICM situations

Not even if they show you TJQK/JQKK/JJQQ/TJQQ etc?

IIRC against these hands and another player having all AA combos your equity is a little under 25%. I'm sure someone can check this in an equity sim.

It seems mad to treat QJT9 any suit pre like double suited aces, which apparently is also never fold ever. Clearly we can see which one is ahead and most likely to win. Though I do remember seeing a similar hand and it being close to 50/50.

I can think of ICM situations to fold AAKKds pre too.