The Federal Reserve's revised Basel III endgame proposal materially reduces risk-weight requirements for residential mortgage exposures, reversing much of the punitive treatment in the original 2023 proposal. Banks had largely exited mortgage origination and held reduced MBS inventory partly due to projected capital costs; the revision changes that calculus significantly.
For Armada's traditional repo desk, this matters because agency MBS and mortgage-related collateral flows through the repo market extensively. As banks regain appetite for mortgage assets, dealer repo books and FICC-cleared volumes on mortgage-backed collateral may expand. SLR dynamics for large G-SIB counterparties may also shift, affecting their repo capacity and pricing behavior mid-quarter.