Billionaire investor Bill Ackman says feds 'screwed up' handling of Silicon Valley Bank collapse, warns they have '48 hours to fix a soon-to-be-irreversible mistake'

• Billionaire investor Bill Ackman posted a lengthy tweet about the Silicon Valley Bank collapse Saturday.
• Ackman criticized the response of the federal government and its lack of monitoring SVB for risk.
• He said the government has "about 48 hours to fix a-soon-to-be-irreversible mistake" with its handling of SVB.

Billionaire investor Bill Ackman is calling on the federal government to intervene in the collapse of Silicon Valley Bank after the once-trusted bank of tech and startup founders was shutdown by regulators on Friday.