Federal Reserve Chair Kevin Warsh, in his first major address at the Jackson Hole Economic Policy Symposium, indicated that the central bank might need to raise interest rates to combat elevated inflation. Warsh emphasized that inflation remains "still too high" and that recent improvements have been modest. He stated that the Fed's 2% price stability objective, as measured by the PCE price index, is a "firm, fixed target" and that the Fed "must be confident that underlying inflation is moving to our objective, clearly and at sufficient speed. Otherwise, we have work to do."

Warsh's comments, while not explicitly signaling an imminent rate hike, were seen as hawkish and led to significant market reactions. The 2-year Treasury yield, which often reflects short-term rate expectations, rose 11 basis points to 4.34%, its highest in a month. The 10-year Treasury yield increased by 5 basis points to 4.72%, and the 30-year Treasury yield was up 1.6 basis points at 5.206%. The U.S. dollar index also rose 0.6% to 99.66, reflecting anticipation of higher rates. According to CME data, the probability of a rate increase next month jumped to 60% from 35% before his speech, and above 55% per CME's FedWatch tool.

Analysts had mixed reactions to Warsh's speech. Some, like Jon Faust, a former adviser to Jerome Powell, noted that Warsh conveyed a tougher stance on inflation without providing detailed guidance, which he has previously disparaged. Others, such as Michael Strain of the American Enterprise Institute, felt the remarks did not offer clear timing on potential Fed moves. However, there was a general consensus that Warsh strengthened his inflation-fighting credentials by acknowledging the problem directly and reaffirming the 2% target, indicating that if inflation fails to improve, the Fed is ready to act with short-term interest rates as its predominant policy tool. PCE inflation for July held steady at 3.7% year-over-year, significantly above the Fed's target.