No, I got your point. I knew about that. We read articles around that time inferring who that big "hidden Lehman/LTCM" was that caused all the other banks to refrain from lending short term capital in the overnight market. The Fed has to know who it is. How could they not? Yes the market blew up some time ago and we're seeing bad dislocations now.
Wasn't it JP Morgan that the writer inferred was in trouble in that Sept 2019 repo freeze-up? Honestly I forget if it was them but that's what comes to mind.