noun | all or nun or·der
A bossy type of stock market order that says "I want to buy X number of shares, but only if I can get them all in one go." It's like when you're buying concert tickets for your squad - it's all or nothing, baby! AON orders are often used by big-shot investors who don't want to mess around with partial fills.
Example
"I placed an AON order for 1000 shares of GameStop, because I'm all in on this meme stock revolution!"
"The hedge fund's AON order for 100,000 shares of Tesla just went through, so expect the price to skyrocket."
"I tried to be a baller and put in an AON order for 500 shares of Apple, but my broke ass couldn't afford it."