Bleecker Street Research, of course, has made out quite nicely from the demise of Silicon Valley Bank (The team won’t comment on how much they made off their short bet).
How much could it be? 60-70%? That is how much the stock fell. The problem with these kind of stories is you don't hear about all the times these firms sold short and or were wrong or lost lots of money before eventually being right and would have been better off with an index fund. It's easy in hindsight to explain what was wrong with the bank or why the trade was a success.