US sells 3-month bills at a high rate of 4.095%, B/X 2.77x; sells 6-month bills at a high rate of 4.220%, B/C 2.84x

US sells 3-month bills at a high rate of 4.095%, B/X 2.77x; sells 6-month bills at a high rate of 4.220%, B/C 2.84x.

Weekly bill auctions are among the most routine operations in the rates complex and almost never set the agenda on their own; the 3-month and 6-month tenders clear in size every week, and the market treats them as background unless something anomalous appears. The metrics that matter are the bid-to-cover against recent averages, the size of any tail versus when-issued, and indirect bidder share, which proxies foreign official and money fund demand. Historically, bill auction results only become a story when supply conditions change around them: Treasury's bill issuance swings with cash management needs, and heavy bill calendars have at times pushed bill rates above the funds rate corridor's midsection and richened them relative to OIS, while lighter supply does the reverse. Money market fund allocation between bills and the Fed's reverse repo facility is the usual marginal channel, so bill auction strength tends to track RRP balances as much as rate expectations. The useful read here is a demand snapshot consistent with front-end rates pinned near the prevailing policy rate; anything beyond that requires comparing these metrics against the recent run of tenders.