Key Highlights

  • The S&P 500 fell 0.28% to 7,652.86 Monday, while the Nasdaq Composite dropped 0.76% on chip stock declines.
  • Micron Technology fell 5.8%, and Seagate Technology declined 6.5%, dragging down the broader technology sector.
  • Treasury yields fell after reports the Treasury may use its General Account to help fund an expanded bond buyback operation.
  • Trump's announcement of 50% tariffs on Canadian autos, trucks, and steel starting January 2027 weighed further on sentiment.

Chip Stocks Weigh on Broader Market

The S&P 500 fell slightly on Monday as a decline in key technology stocks overshadowed a move lower in Treasury yields. The broad Market Index dropped 0.28% to close at 7,652.86, while the Nasdaq Composite lost 0.76% to 25,980.19. The Dow Jones Industrial Average bucked the trend, gaining 140.15 points, or 0.26%, to 53,417.16.

Declines in semiconductor stocks weighed most heavily on the broader market. Micron Technology (NASDAQ:MU) shed 5.8%, while Advanced Micro Devices and Broadcom pulled back more than 3% and 2%, respectively. The iShares Semiconductor ETF slid 2.7%. Other technology names fell as well, with Coherent and Lumentum dropping more than 4% each, Sandisk down 6%, Corning down almost 3%, and Seagate Technology declining 6.5%.

Treasury Yields Fall on Buyback Speculation

Treasury yields moved lower after reports emerged that the Treasury may use its General Account to fund a bond buyback operation. The 10-year Treasury note yield fell more than 4 basis points to 4.69%, while the 30-year Treasury bond yield, which had topped 5.3% last week to reach levels not seen in nearly 20 years, shed 6 basis points to 5.216%.

The report followed Treasury Secretary Scott Bessent's comments last week that the department's plans to at least double the level of government Debt Buybacks could ultimately exceed the $4 billion figure announced earlier in the month. Initial relief on the long end of the Yield Curve following that announcement proved short-lived, with stocks continuing to face pressure from rising bond yields globally, including in Japan, France, and Germany, as investors weighed the risk of a prolonged US-Iran conflict keeping oil prices, and inflation, elevated.

Tariffs and Fed Speech Add to Market Uncertainty

Sentiment was further weighed down by President Trump's announcement that the US will raise tariffs on imports of cars, trucks, auto parts, and steel from Canada to 50%, effective January 1, 2027. One chief Investment officer noted that the Treasury's approach to capping long-term rates through increased Short-Term Debt issuance ties government interest expense more closely to Federal Reserve policy, a dynamic Fed Chair Kevin Warsh is expected to address in a speech at the Jackson Hole symposium later in the week.

Investors are awaiting additional data this week, including the July personal consumption expenditures price index on Wednesday, along with Earnings from Nvidia and Marvell Technology on Wednesday and Thursday, respectively.

Conclusion

Monday's mixed session, with chip stocks dragging down the broader index even as yields eased, illustrates how closely Equity market sentiment remains tied to both AI-related technology names and the trajectory of government bond markets. Whether this week's Inflation data and marquee earnings reports reinforce the current cautious mood or provide a catalyst for renewed gains will likely depend on how closely results align with already-elevated market expectations.