BITCOIN FADES. TREASURY $6B BUYBACK LIFTS YIELDS.

RATES DESK — Wednesday’s tape turned on a size print, not a speech. The U.S. Treasury set the maximum for Thursday’s liquidity-support buyback in the 10-year to 20-year sector at up to $6 billion — three times the $2 billion ceiling used in the prior operation in that maturity bucket. Bond yields rose after the figure hit the wires. Bitcoin gave back an earlier bounce on the same move. This Extra is a rates-and-timestamp file. It is not the Strive / Strategy corporate-bitcoin Extra already on the desk. No allocation advice. No spot targets. No buy-or-sell framing. Only confirmed operation size, attributed yield highs, and timestamped BTC prints from named market wraps used for verification.

On 19 August 2026, Treasury published a formal notice that longer-dated liquidity-support buybacks — the 10–20-year and 20–30-year nominal coupon sectors — would rise by at least double, from a $2 billion maximum per operation to at least $4 billion, effective 9 September 2026 through the rest of the refunding quarter ending 4 November 2026. That notice is the policy floor. Wednesday’s announcement answered the next question: how far above $4 billion the first enlarged 10–20-year sitting would go. The answer was a $6 billion maximum for the 10 September operation — above the new floor, still triple the old $2 billion norm for that sector. Reuters, CNBC, Bloomberg, and WSJ all carried the size as up to $6 billion in 10- to 20-year paper.

The operation window is scheduled for roughly 17:40–18:00 UTC on 10 September (1:40–2:00 p.m. ET), with settlement on 11 September. Treasury buys seasoned securities in these sittings. Desk language stays with Treasury’s own framing: liquidity support for older, less-liquid issues — not a claimed monetary stimulus and not a QE substitute. That distinction is the insider cut: markets that priced a stimulus myth got a liquidity-ops size instead.

Markets did not treat $6 billion as a surprise large enough to push long yields down. Benchmark 10-year yields climbed after the announcement. Named wire wraps printed a high near 4.8528% — the highest since November 2023. The 30-year moved back above 5.3% in the same session. CNBC also noted the 20-year near 5.314% and long-end paper up as much as about five basis points before some ease. Pre-announcement chatter in those same wraps had run as high as $8–10 billion. Coming in at the bottom of that speculative band left the long end selling off even as the absolute size was a record relative to the old $2 billion template. The print that mattered for Wednesday’s tape was not “larger than August’s floor”; it was “smaller than what the long end had already priced as possible.”

Bitcoin’s Wednesday path tracked the rates impulse, not a separate crypto headline. Named CryptoTimes verification wrap (cross-check only): BTC had pushed to an intraday high near $79,742, traded near $79,600 shortly before the Treasury size news, then reversed. Around 15:06 UTC on 9 September, the same wrap timed BTC near $78,500. A later mark near 16:00 UTC put the print around $78,560. That sequence is the Extra’s BTC claim set: timestamped fade after the buyback-size announcement, concurrent with the 10-year high near 4.85%. It is not a forecast of Thursday’s fill, Friday’s CPI, or next week’s Federal Reserve meeting.

When long Treasury yields rise, the risk-free curve offers more carry. Non-yielding risk assets — including bitcoin — face a higher opportunity-cost bar in the same session. The reverse happened after the 19 August expansion notice: long yields fell and BTC accelerated in the weeks that followed, a path already covered elsewhere and not re-litigated as a tip here. Wednesday inverted that tape: size underwhelmed relative to hopes, yields went up, and BTC gave back the bounce. One-session correlation is not causation. A Rates Extra prints the co-move with clocks attached.

Calendar facts only, not a trading plan: 10 September hosts the 10–20y buyback operation and August PPI; 11 September is settlement of the buyback and August CPI; 15–16 September is the Federal Reserve policy meeting. What this piece does not do: no investment advice; no BTC, bond, or equity targets; no buy/sell language; no claim that the buyback “failed” as policy — only that yields rose and BTC faded after the $6 billion maximum was disclosed; no rehash of the Strive buys BTC / Strategy pauses Extra. Nailed down, 10 September 2026, 01:40 GMT. PATH /money/btc-treasury-6b-buyback-yields. DESK_ID btc-treasury-6b-buyback-yields. Beat MONEY / RATES EXTRA. PHOTO: Rchuon24 / Wikimedia Commons (CC BY-SA 3.0) — U.S. Treasury Building. VIDEO=no. Verification: Treasury Aug 19 notice; Reuters/CNBC/Bloomberg/WSJ wraps of Sept 9 size for Sept 10 10–20y op; CryptoTimes timestamped BTC path as verification only — do not republish. NTH MERIDIAN does not invent quotes, prices, or events.

DESK_ID btc-treasury-6b-buyback-yields. Verification: U.S. Treasury Aug 19, 2026 long-end buyback notice; Reuters/CNBC/Bloomberg/WSJ wraps of Sept 9 size announcement for Sept 10 10–20y op; CryptoTimes timestamped BTC prints — verification only, do not republish. Photo: Rchuon24 / Wikimedia Commons (CC BY-SA 3.0). No investment advice. NTH MERIDIAN does not invent quotes, prices, or events.