US inflation came in broadly in line with estimates in August, but the core rate rose faster than expected, putting a Fed hike next week firmly on the table.Headline CPI rose 0.4% on the month against forecasts of 0.4% and July's 0.1%. Year-over-year it rose 3.4%, matching both expectations and July's reading.Core CPI increased 0.3% month over month, faster than the 0.2% forecast and July's 0.2%. Annual core inflation came in at 2.4%, in line with expectations and down from July's 2.5%.The two-year Treasury yield jumped six basis points to 4.61% as traders began assigning nearly a 100% chance of a hike next week. The 10-year, less closely tied to Fed policy, was flat at 4.95%.Bitcoin dipped back to $76,700 in the minutes following the release and trades at $77,320. Nasdaq 100 futures rose to a session high, up 0.8%.The Curve Flattened, Which Is the Market's Verdict on CredibilityThe divergence between the two maturities is the most informative part of the reaction.A six basis point move in the two-year with the 10-year unchanged means traders repriced the Fed's near-term path without changing their view of longer-term inflation or term premium. The curve flattened.That combination reads as the market treating a hike as sufficient rather than insufficient. A Fed seen as behind the curve would push long yields higher alongside short ones, because persistent inflation would be priced into the out years. A Fed seen as responding adequately gets the opposite — short rates up, long rates anchored.Nasdaq futures rising to session highs on the same print is consistent with that reading. Equities are not selling a hike they believe contains the problem.Bond Markets Flipped From No Hikes to 75 Basis Points in Two WeeksThe scale of the repricing since Jackson Hole is the context that makes this print consequential.Traders moved from assuming no rate hikes — potentially for the rest of 2026 — to hedging against as much as 75 basis points of tightening this year.That sent the 10-year from the 4.60% area to just shy of 5.00% ahead of Friday's data. The two-year rose from 4.20% to 4.56% before the numbers, then to 4.61% after.A 41 basis point move in the policy-sensitive maturity across two weeks, on no actual policy change, describes a market rebuilding its entire view of the year from a single speech.Warsh Created the Conditions He Argued AgainstThe August report took on outsized importance after Chair Kevin Warsh hinted at Jackson Hole that the Fed might have to act if inflation did not soon show signs of slowing.Bond markets have been in a fever pitch since.That outcome inverts what Warsh intended. He used the speech to reject forward guidance, arguing the practice has "overstayed its welcome" outside genuine crises and that quasi-commitments inhibit the Fed's freedom to decide correctly. He committed to "a discipline, not to a decision."The Wall Street Journal's Nick Timiraos identified the consequence: the speech convinced investors a hike was likelier without telling them what would trigger one, leaving a single data release to authorize the decision.Markets filled the gap themselves, and the magnitude they filled it with — 75 basis points — exceeds anything Warsh signalled.Forecasters Have Converged on Three HikesBank of America expects 25 basis points next week with another 50 by year-end. RBC Capital Markets revised from rate cuts this year to three hikes. Both arrive at 75 basis points of total tightening.Fitch Ratings' Olu Sonola said the data make it "increasingly difficult to justify a pause."Rates have sat at 3.50%-3.75% since December 2025, making a September increase the first since July 2023. With the move now priced near certainty, the dot plot and updated projections carry the information rather than the decision itself.The Asymmetry Sits on the Other SideLMAX Group's Joel Kruger flagged what near-certain pricing implies for the reaction function."A good deal of the hawkish risk is arguably priced in," he said. "We see greater potential for an outsized move in risk assets to the topside should the Fed ultimately fail to deliver on these hawkish expectations."At nearly 100% priced, a hike delivers confirmation. A hold delivers a shock.Bitcoin's intraday path illustrates how that logic already played out on the data. It fell to $76,700 immediately after the release, then rebounded above $79,000 as the uncertainty around the decision collapsed, before settling at $77,320.21Shares' Matt Mena noted Bitcoin has gained an average 2.13% over the 30 days following hotter-than-expected core CPI readings, though the current combination of an energy shock and yields near 5% is not typical of prior instances.The Energy Shock Runs Underneath All of ItBrent closed at $104.61, up more than 8% on the week.Saudi Arabia closed the East-West pipeline that bypasses the Strait of Hormuz, and Houthi attacks hit Saudi energy facilities. Production fell to 6.238 million barrels per day, the lowest since 1990 — a producer that cannot export cannot sustain output.Headline CPI at 3.4% against core at 2.4% shows that gap directly, and it is the reason the flat 10-year matters. The market is pricing the energy component as a level shift rather than an embedded inflation problem.The Clarity Act cloture vote falls September 15. The Fed decides September 16 at 2:00 p.m. ET.
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