Semiconductor stocks took another hit on Tuesday, dragging down tech-heavy exchange-traded funds even as a key inflation gauge came in cooler than expected. The State Street SPDR S&P Semiconductor ETF fell 4%, the iShares Semiconductor ETF dropped 4.7%, and the Technology Select Sector SPDR slid 2.6%. The Invesco QQQ Trust, which tracks the Nasdaq-100, lost 1.6%.
The trigger: a jump in medium- and long-term Treasury yields. That move outweighed a softer-than-expected producer price index (PPI) report, which measures wholesale inflation. Normally, cooler inflation data would be good news for stocks, but on this day the bond market took center stage.
Why rising yields hit tech so hard
Growth stocks, especially in technology and semiconductors, are valued based on profits expected years into the future. When Treasury yields rise, the "discount rate" used to calculate the present value of those future earnings also rises. That makes future profits worth less today, so the stocks that rely most on long-term growth tend to fall the most.
In plain English: when safer bonds start paying more, investors demand a better return to hold riskier assets. The priciest parts of the market—like chipmakers—can reprice quickly. That's why a 4.7% drop in the iShares Semiconductor ETF is a textbook example of yield-led repricing.
The same rate move created winners elsewhere. The Consumer Staples Select Sector SPDR rose 1.3%, as steady demand for everyday goods makes those companies less sensitive to rate changes. Financials also climbed 0.6%, because higher longer-term rates can boost the interest banks earn on loans.
What the PPI report showed
The producer price index, which tracks prices businesses pay for goods and services, came in softer than economists had expected. That's often seen as a sign that inflation pressures are easing, which could give the Federal Reserve room to slow its rate hikes. But the bond market's reaction suggests investors are more worried about other forces—like the Fed's signal that more rate action may be needed, as recent comments from a Fed official indicated.
Indeed, the yield move was concentrated in the medium and long end of the curve, which is more sensitive to expectations for future growth and inflation. That's a different signal than short-term yields, which track the Fed's current policy rate.
What it means for investors
For everyday investors, the key takeaway is that even good news on inflation can be overshadowed by bond market moves. When yields jump, tech-heavy funds like QQQ and semiconductor ETFs can fall hard, while more defensive sectors like staples and financials may hold up or even gain.
This push-and-pull between "long-duration" tech and sectors that benefit from or tolerate higher rates is likely to continue if yields remain the main driver. Investors should watch Treasury yields closely, as they often set the tone for the entire stock market.
It's also worth remembering that sector ETFs can move in very different directions on the same day. A diversified portfolio that includes both growth and value or defensive sectors can help smooth out these swings.
For more context on how inflation data affects markets, see our earlier piece on softer producer prices lifting Wall Street mood and the October producer prices report.
