Lehmans AUM (assets under management) were 600b. They were 680b + 20 in own capital shortly before that. But lets go with 600b which is 847b in todays Dollars
Currently tumbling banks: SVB 220b, FRC 200b, SBNY 115b.
So is it 535b today vs 847 in the gfc? Not so fast. Lehmans assets were utterly worthless before the fall. We don't know exactly about the balance sheets of these banks yet. Maybe a few startups are utterly worthless, who knows which corporate bonds would survive in the worst case scenario from now on. Also back then there was Bear Stearns with 423b AUM.
History hasn't played out yet. Chill and lets see if things actually will get bad at all this time.