According to informed sources, the three major financial regulatory agencies in the United States are brewing a significant policy adjustment, planning to announce on June 18 a drop in the key capital buffer requirements for large banks, with a maximum reduction of up to 1.5 percentage points. This move primarily targets the enhancement of the Supplementary Leverage Ratio (eSLR) rule, which currently applies to systemically important financial institutions in the U.S. such as JPMorgan Chase, Goldman Sachs, and Morgan Stanley.

According to the new proposal, the capital requirements for bank holding companies under the eSLR framework are expected to drop from the current 5% to a range of 3.5%-4.5%. Meanwhile, the capital requirements for bank subsidiaries will also be lowered from 6% to the same level. This policy adjustment is seen as a response to industry concerns, as many market participants believe that the current rules have somewhat restricted the trading activity of banks in the $29 trillion Treasury market.

It is worth noting that this regulatory approach is quite similar to the "customized" revision concept regarding the eSLR calculation for systemically important banks during the Trump administration in 2018. However, regulatory agencies may make adjustments to the specific implementation terms. The Federal Reserve, the Federal Deposit Insurance Corporation, and the Office of the Comptroller of the Currency are closely collaborating to advance this proposal, and the final version may still be fine-tuned based on feedback from various parties.