Jump itself just had $320M laying around?

Jane Street made $8bn in 2020 [1]. $320M is probably peanuts in exchange for maintaining the stability of a market they dominate in capturing arbitrage money on.

[1]: https://www.bloomberg.com/news/articles/2021-06-18/jane-stre...

Jump Trading Group isn't some rando crypto org, it's a legit hedge fund established in 1999. Supposedly it has at minimum $150M AUM[1] but because it's a private company nobody actually knows the real amount. We can predict that they probably have a few billion in cash lying around if they've been successfully trading for over 20 years. Jump Crypto, the group that bailed out Wormhole, is their crypto trading division.

[1] https://wallmine.com/fund/3mg/jump-trading-llc

Jump is a black hole. I had a friend go there 20 years ago and haven't heard from him since. But he's got a lovely mansion on the North Shore.

$150M is 15% of a billion. Why would they have a few billion in cash if they only have $150M? Numbers seem off.

The numbers are off because it is a private company. They have $150M in disclosed assets, the true number may be magnitudes higher and probably is if the company can cough up $320M on a dime. Unless you have insider trading information there is no way to know Jump's real AUM.

And $300M available for use within 24 hours. I'm sure Google, Netflix and Walmart all have $300M+ they wouldn't care if it went missing. But all the paper and presentations needed to touch a tenth of that sum would take months. But this guys had it on hand as if they were quarters at an arcade.

That's quite possible, judging by the huge bonuses a few friends working there got as a SWE.

Jump is very profitable.