Citadel signals Fed may shock markets with fresh rate hikes

Wall Street expectations for future Federal Reserve tightening have increased sharply, with Citadel Securities now warning that policymakers could begin raising interest rates again as early as September 2026.

According to a note from Citadel Securities Head of Macro Strategy Frank Flight, the firm sees a growing risk that inflation is becoming embedded across the U.S. economy, creating conditions that could force the Federal Reserve into a more aggressive stance than investors currently expect.

The warning arrives just ahead of the Federal Open Market Committee meeting on June 17, where CME FedWatch data shows markets overwhelmingly expect officials to leave interest rates unchanged.

While an immediate move is not anticipated, Citadel believes the focus should be on how Fed Chair Kevin Warsh frames the outlook for inflation and future policy.

Inflation data keeps pressure on policymakers

Within its client note, Citadel argued that inflation is no longer being driven solely by energy prices. Frank Flight wrote that the U.S. economy faces the risk of entering a “hysteretic equilibrium,” a condition in which temporary shocks leave lasting effects on inflation even after the original trigger fades.

Although oil prices have retreated following the initial U.S.-Iran agreement, Citadel said price pressures have continued spreading through other parts of the economy. The firm pointed to accommodative financial conditions, supply-chain disruptions, and ongoing labor-market strength as factors supporting inflation.

Additional signs of persistent inflation have emerged in recent economic data. Citadel highlighted that a growing share of core Consumer Price Index components are now rising more than 3% year-over-year. The firm also noted that headline CPI reached 4.2% in May, while Producer Price Index inflation climbed to 6.5%, indicating continued pressure on businesses and consumers.

At the same time, Citadel argued that the artificial intelligence investment boom is adding another source of demand. The firm estimates AI-related capital expenditures could reach roughly $750 billion in 2026 before rising to $1.25 trillion in 2027 amid spending tied to companies such as OpenAI, Anthropic, and SpaceX.

Markets increasingly discuss the possibility of hikes

Against that backdrop, Citadel expects the Federal Reserve under Warsh to adopt a noticeably hawkish tone. Flight said policymakers could remove any remaining easing bias from their projections and publish forecasts showing no rate cuts during 2026.

“We think the risks skew to a rate hike at the September meeting,” Flight wrote.

Citadel further expects at least five Federal Reserve officials to signal support for future tightening and estimates that an inertial Taylor Rule framework would justify roughly 75 basis points of rate increases during 2026. The firm’s projected path includes potential hikes in September and December 2026, followed by another increase in March 2027.

Other market indicators have moved in a similar direction. Kalshi prediction market data currently assigns a 60% probability that the Federal Reserve raises rates before July 2027. 

Separately, a recent Bank of America fund manager survey found that nearly 40% of respondents expect at least one rate hike within the next year, up from 16% a month earlier.

BNP Paribas has also shifted to a more hawkish outlook. The bank recently abandoned its expectation for stable policy and now forecasts three rate hikes beginning in December, citing strong employment data, persistent inflation, and inflation risks linked partly to the U.S.-Iran conflict.

For risk assets, Citadel warned that a prolonged period of tighter monetary policy could weigh on valuations. The firm said higher borrowing costs and reduced liquidity would likely create a more challenging environment for Bitcoin and the broader cryptocurrency market if investors begin pricing in additional Fed tightening.