These included the AMFL, the MMIFF, the TAF and last but not least, the PDCF, or Primary Dealer Credit Facility, which as Rabobank said "would provide overnight funding to primary dealers, similar to the way the discount window provides a backup source of funding for depository institutions."

Just three hours later, at 6pm ET, the Fed, as expected, announced the establishment of a Primary Dealer Credit Facility (PDCF) "to support the credit needs of households and businesses." What the Fed really meant is that it is now launching a way for dealers to monetize the stocks they own, as the facility will be collateralized, among others, by "equity securities."

As the Fed announced, the PDCF "will offer overnight and term funding with maturities up to 90 days and will be available on March 20, 2020" and will be in place for at least six months and may be extended as conditions warrant.

But here is the punchline:

Credit extended to primary dealers under this facility may be collateralized by a broad range of investment grade debt securities, including commercial paper and municipal bonds, and a broad range of equity securities.

This means that as of this moment, equities - which are worth zero in a worst case scenario - are eligible collateral for Fed liquidity.

Here are some more details on the eligible collateral:

Collateral eligible for pledge under the PDCF includes all collateral eligible for pledge in open market operations (OMO); plus investment grade corporate debt securities, international agency securities, commercial paper, municipal securities, mortgage-backed securities, and asset-backed securities; plus equity securities.