Oh yeah, don't get me started on exchanges. I'm astounded at how bad their technical processes are. The ASX (Australian Stock Exchange) has something like a 3 day time to settlement. And I'm told it's one of the more 'modern' exchanges (I guess the other ones are still using stock tickers and abacuses).
Unfortunately 2 days now. I appreciate the time to settlement because I could buy my shares and pay 2 days later. Sometimes it takes time to get funds from other accounts, and I wanted to buy (or sell) today, for example, when the quarterly just came out.
Part of me wants to sneer in disgust, but part of me considers that we live and work in a tech industry that truly, honestly believes that "move fast and break things" is a great design principle, and maybe we don't want those people in charge of the foundation of the global economy.