The 30-year Treasury yield's climb to 5.2 percent — highest since 2008 — is forcing investors to reassess equity valuations as Warsh's bear steepener takes hold.
The 30-year Treasury yield's climb to 5.2 percent — highest since 2008 — is forcing investors to reassess equity valuations as Warsh's bear steepener takes hold.

The S&P 500 fell 1.5 percent Wednesday after the 30-year Treasury yield spiked to 5.2 percent, its highest since 2008, as Fed Chair Kevin Warsh's bear steepener rattled markets. The index recovered 1.3 percent to 7,413 Thursday, but the rebound was narrow, led by a 16.6 percent surge in Microsoft.
"The historic problem with data dependence is the data and the dependence," Warsh said at his second FOMC press conference, offering little clarity on how the Fed plans to return inflation to its 2 percent target. He rejected the notion that the no-move rate decision was a pause and declined to signal what would trigger a hike. "We've got no magic wand," he acknowledged.
The FOMC held rates steady in a 9-3 vote, with three dissents and no explanation of the disagreement. The statement was nearly an exact reprint of June's, suggesting Warsh sees little change in the data the Fed considers. Core PCE, the Fed's preferred gauge, had fallen to 2.6 percent before rising again on energy costs tied to the war in Iran. Second-quarter GDP slowed to an annualized 1.5 percent from 2.1 percent, while June core PCE rose just 0.1 percent month over month, undershooting forecasts.
Warsh's reluctance to provide forward guidance — he has questioned the value of dot plots and even press conferences — leaves investors guessing on the next move. Rate-hike odds for September fell to roughly 55 percent from nearly 80 percent before the decision, yet the long end of the curve keeps climbing. The 30-year yield held at 5.21 percent Thursday, its highest since 2007.
Microsoft surged 16.6 percent Thursday — its best session since October 2008 — after reporting 43 percent cloud revenue growth, its fastest since 2022. Capital expenditure guidance that did not outpace expectations eased fears that AI spending has run ahead of returns. The move dragged semiconductor names sharply higher, with Micron up 17 percent, Lam Research up 18.4 percent and SanDisk up 23.9 percent.
Meta Platforms sank 9.2 percent after guidance missed and investors questioned when its AI labs will convert into revenue. The Technology Select Sector SPDR Fund led the tape with a 4.7 percent gain, while the Communication Services fund fell 3.2 percent under Meta's weight. Defensives were sold to fund the move: consumer staples fell 2.2 percent, health care dropped 1.8 percent and real estate declined 1.7 percent.
Apple fell 1.9 percent Thursday and traded about 6 percent lower after hours despite beating on earnings and revenue. The company reported EPS of $2.02 versus the $1.89 consensus on revenue of $109.42 billion, up 15 percent year over year. iPhone sales surged 22 percent to $54.25 billion, and Mac revenue jumped 29 percent to $10.35 billion.
But Apple guided fourth-quarter revenue growth of 9 to 11 percent, below the 12 percent consensus, blaming what outgoing CEO Tim Cook called a "hundred-year flood" in memory chip prices. "The memory prices are choking, so we'll have to look at alternatives," Cook said. The company has already raised Mac and iPad prices and faces pressure to increase iPhone prices, which analysts expect later this year.
Gold rose 1 percent to $4,108 an ounce as the softer dollar and lower front-end yields lent support. The Russell 2000 added 0.8 percent to 2,929, while the Dow advanced 424 points to 52,019.
The bear steepener — long yields rising faster than short yields — typically tightens financial conditions and pressures equity valuations, particularly growth and technology stocks. With Warsh preferring the Fed to operate as a black box, investors face wider swings in asset prices when rate decisions come. The next FOMC meeting in September will test whether the market's 55 percent hike odds hold.
This article is for informational purposes only and does not constitute investment advice.