A post by @circle on X.

Circle said the reserve fund behind its USYC token has shifted from mostly overnight reverse repo into longer-dated U.S. Treasury Bills, while the token, issuer and USDC subscription and redemption flows remain unchanged. The disclosure signals a move toward longer duration in the yield-bearing token’s backing, a change in the risk and yield profile of the fund without altering how investors enter or exit. Circle framed the update as a same-token transition, emphasizing continuity for holders. Watch for further detail on the fund’s new duration mix and any shift in USYC yields following the reallocation.