US sells USD 3mth bills at a high rate of 3.735%, B/C 2.88x; sells 6mth bills at a high rate of 3.830%, B/C 2.85x

Weekly 3- and 6-month bill auctions are among the most routine supply events on the US calendar, and comparable prints have historically moved little beyond the very front of the curve; the information content sits in the bid-to-cover and the tail versus when-issued, not in the headline rate, which tracks the prevailing policy path closely. A cover ratio in the high twos is broadly consistent with the pattern at regular bill supply, where demand is anchored by money market funds and balance sheet parking rather than rate views. The mechanism that matters, when one appears, is the spread between bill rates and the overnight fixings they compete with, since that differential, not the outright level, is what draws or deters the cash bid. Any deviation of the auction stop from the prevailing front end would show up in repo and in the bill-OIS complex before anywhere else. As with all regular bill sales, the follow-ons are the week's remaining auctions and Treasury's issuance announcements, where bill share of funding has at times been a signal in its own right. Absent a notable tail or a weak cover, the established pattern is for the event to pass without durable repricing.