The Fed receives cash and provides collateral: As of 4/19, $2,666,343 million in Reverse Repurchase agreements
3/15/2023: $2,423,126 million
Source: https://fred.stlouisfed.org/series/WLRRAL
Zooming in, since 3/15/2023, Reverse Repurchase Agreements +$243,217 million.
* Reverse repurchase agreements are transactions in which securities are sold to a set of counterparties under an agreement to buy them back from the