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Major Indexes Backpedal as Micron Drags Tech Sector

The 10-year Treasury yield remains elevated

Managing Editor
May 18, 2026 at 11:42 AM
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Today's early morning gains were quickly shed as Micron Technology (MU) dragged the tech sector and investors continued to weigh the future of the U.S. and Iran. On Sunday, President Donald Trump said there "won't be anything left" if Iran didn't agree to a peace deal quickly. The Nasdaq Composite (IXIC) is off 128 points, while the Dow Jones Industrial Average (DJI) and S&P 500 Index (SPX) also sport notable losses. West Texas Intermediate (WTI) crude prices are resuming their climb higher, last seen trading above $105 per barrel, while the 10-year Treasury yield remained up 4.6%.

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Li Auto Inc (NASDAQ:LI) stock is down 10.1% to trade at $16.64, after the EV auto maker saw a lackluster response to its L9 SUV update announcement. Todays drop has the shares headed for their worst day since March 2025 and back below the year-to-date breakeven mark. Options traders have been flooding in, with 11,000 calls and 5,742 puts across the tape, six times the average daily pace. The January 2027 25-strike call is seeing the most attention, with selling activity detected.

Roblox Corp (NYSE:RBLX) is one of the top stocks on the New York Stock Exchange (NYSE) today, last seen up 9.6% to trade at $46.96, extending its recent bounce off the $40 level, though a catalyst remains unclear. RBLX remains near its late-2024 lows, off 41% year-to-date, with added long-term pressure stemming from the descending 50-day moving average.

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Precious metals giant MP Materials Corp (NYSE:MP) is near the bottom of the NYSE, last seen down 8.5% to trade at $56.07. MP is headed for its seventh daily drop in eight sessions, pulling back after tapping a multi-month peak just shy of $80 on May 8. However, the rare earths name remains 11% higher year-to-date and significantly above its annual lows near $18.

 

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