How I Made $5000 in the Stock Market

These Stocks Moved the Most Today: Micron, DJT, Accenture, Tilray, Lululemon, Medline, Rivian, and More

Dec 18, 2025 06:10:00 -0500 by George Glover | #Chips

Traders working at the New York Stock Exchange. (NYSE)

Key Points

Stocks posted strong gains Thursday after U.S. inflation data showed price growth was much weaker than economists’ expectations in November.

These stocks made notable moves:

Micron Technology surged 10%. The memory-chip maker crushed Wall Street’s first-quarter earnings targets, and issued strong guidance. The results could reassure investors who are jumpy about bloated artificial-intelligence valuations, although concerns remain about Big Tech companies’ huge spending commitments. Sandisk also got a boost from the earnings report, with shares rising 6.1%.

Lululemon Athletica jumped 3.5%. Elliott Investment Management has built a stake of over $1 billion in the athletic apparel retailer and supports former Ralph Lauren executive Jane Nielsen as a CEO candidate, a person familiar with the matter told Barron’s. Lululemon didn’t immediately respond to a request for comment.

Insmed slumped 16% after the pharmaceutical company ended development of a sinus drug following a failed study. Insmed said a mid-stage trial for its drug brensocatib failed to meet its main goals. The company was testing to see if Insmed improved symptoms in patients with the inflammatory condition chronic rhinosinusitis without nasal polyps.

Coinbase Global slipped 2%. The cryptocurrency exchange unveiled plans to move toward being an “everything exchange,” announcing a partnership with prediction-markets company Kalshi and the rollout of stock trading.

Rivian Automotive rose 15% to $20.28 after the maker of electric vehicles was upgraded to Outperform from Neutral at Baird. The firm raised its target for the stock price to $25 from $14. The analysts noted the company’s launch of its midsize SUV, R2, is expected in 2026.

Trump Media & Technology Group soared 42% to $14.86 after announcing a merger with fusion power company TAE Technologies in an all-stock deal worth more than $6 billion. Trump Media, the parent of Truth Social, moves into nuclear with the merger as the artificial-intelligence arms race ramps up.

CarMax declined 4.2%. The used-car dealer posted quarterly earnings and sales that topped analysts’ expectations but said it plans to reduce margins on used cars.

Accenture fell 1.4%. The technology consulting company reported adjusted earnings of $3.94 in its fiscal first quarter, beating Wall Street estimates. The strong report, however, wasn’t enough to calm investors’ fears about AI cannibalizing the information-technology and consulting sectors.

Medline fell 3.7% to $39.50. The company, which calls itself the largest medical-surgical products provider, debuted Wednesday at $35 and closed at $41, up 41% from its initial public offering price of $29 a share.

Tilray Brands stock fell 4.2% and Canopy Growth slid 12% after President Donald Trump signed an executive order to reschedule marijuana as a lower-class drug. Both stocks had risen in anticipation of the move.

Write to George Glover at george.glover@dowjones.com