its happened before
https://www.treasuryandrisk.com/2012/05/21/jpmorgans-risk-officer-fired-by-cantor/
Wells was party to what looks like time duration spread exotic derivitives and the bank apparently was a market maker.
The trade went the wrong way for the hedge fund and couldnt meet collateral for margin call.
It should be noted the trader had been banned in foreign markets already for bullshttery. Where is wells know your customer and why wasnt this guy flagged?
heres what happened to jp morgan when something like this happened before:
https://www.brookings.edu/research/2-billion-later-policy-implications-of-jp-morgan-chases-trading-loss/
Utlimately the bank was hauled in front of congress and grilled relentlessly for hours.
The bank paid a big fine and the losses were more than double initially reported.
Who bears the loss? The loss will be borne entirely by Morgan’s shareholders. The same will likely be true for Wells. 2b is a drop in bucket for a bank as large as wells fargo. But it will expose more poor internal oversight and make regulators unhappy.
After JP morgan formally announced trading losses the stock tanked nearly 10%.
If all this plays out like JP Morgans little incident, there will be lawsuits, sec investigations and the CIO will likely be shown the door.
Oh, and one more thing? They laid off staff who had nothing to do with the debacle.
Yay us.
Wells is trying to get out of congressional hole and regulatory scrutiny...this might be the final straw that says its time to break the bank up.
Lets all hope so.