The Federal Reserve's policy framework is shifting from "inertia" to "adaptive," which could herald a challenging summer for fixed-income markets.

On July 5th, Frank Flight, head of macro strategy at Citadel Securities, cautioned in a recent report that markets are currently severely underestimating the probability of a Fed rate hike at its July meeting. He maintains a baseline forecast for two rate hikes this year but argues that investors remain trapped in an "inertial policy framework," mistakenly assuming the Fed will only act after the data fully compels it to do so.

Flight noted that Fed Chair Waller's performance at the June FOMC meeting was "A+"—breakeven inflation rates fell, the yield curve flattened, the dollar strengthened, and a brief pullback in risk assets was quickly absorbed. This market reaction shows that consecutive, rapid "credibility hikes" are digestible for markets, even if not fully priced in advance. Simultaneously, his cross-asset macro framework and U.S. Treasury cash flow data both point to upside risks for yields, suggesting pressure in fixed-income markets may persist.

From "Inertia" to "Adaptive": Market Underestimates Policy Framework Shift

Flight believes the core misjudgment in current market pricing is that investors are still using the old "inertial policy framework"—assuming the Fed moves slowly and only reacts passively after sufficient data accumulates. He argues the Fed's shift toward an "adaptive policy framework" is real and far from fully appreciated by the market.

Under an adaptive framework, the central bank's optimal strategy is to respond swiftly at the first signs of deviation from its dual mandate, preventing those deviations from becoming entrenched. This mechanism guides wage and price-setting behavior to embed 2% inflation expectations, thereby increasing the probability of achieving the target. Ultimately, the required degree of tightening would be less than the path of "delay and then slam on the brakes" under an inertial framework.

He particularly emphasized that if the Fed forgoes its first opportunity to "walk the talk" at the July meeting, it would render Chair Waller's statements at the June press conference as merely symbolic and could lead markets to unwind some of the credibility premium already built.

Cross-Asset Signals and Treasury Cash Flow Both Point to Higher Yields

From a technical and flow perspective, quantitative signals from Citadel Securities also support the view for rising yields.

Flight recalled that on May 19th, he had warned of risks of a rapid global duration rally, triggered by two factors at the time: first, the PC1 growth factor valuation in the cross-asset decomposition model reached the reversal threshold of +2 standard deviations, hinting at downside risks for yields; second, U.S. Treasury cash flow data showed a significant surge in net buying intensity. May 19th subsequently marked a cyclical high for yields this year.

However, both of those pro-duration factors have now completely reversed. The PC1 factor in the macro framework has moved more than 3 standard deviations in recent weeks, with a current reading of -1.17 standard deviations. Meanwhile, U.S. Treasury cash flow data indicates net selling intensity has clearly moved to a higher level.

Flight concluded that these signals collectively point to further upside risks for yields, and pressure in fixed-income markets could intensify through the summer.