economy
February 11, 2026
Stocks Making the Biggest Moves Midday: Acadia Healthcare, Vertiv, Moderna, Unity Software, Generac & More
These are the stocks posting the largest moves in midday trading.

TL;DR
- Acadia Healthcare stock rose 10% on investor confidence in new management.
- Vertiv jumped nearly 20% due to strong 2026 guidance.
- Unity Software fell nearly 30% on a disappointing first-quarter revenue outlook.
- Smurfit WestRock increased over 10% following improved order trends and profit expectations.
- BorgWarner surged about 20% to a 52-week high, entering the AI data center market.
- Generac climbed nearly 17% despite missing earnings expectations, citing growth in the data center market.
- Gilead Sciences reversed to a 5% gain on potential for HIV treatment.
- Moderna shares tumbled 6% after the FDA refused to review its experimental flu shot application.
- Zillow Group fell 16% after providing a first-quarter adjusted EBITDA outlook below analysts' expectations.
- Avantor dropped about 17% following fiscal year 2026 earnings guidance below estimates.
- Mattel tumbled 24% after posting fourth-quarter earnings and revenue below expectations, with downgrades from Citigroup and JPMorgan Chase.
- Lyft dropped 14% after reporting fourth-quarter bookings and providing a first-quarter adjusted EBITDA outlook.
- Cloudflare gained nearly 5% after sharing a rosy first-quarter revenue outlook.
- Robinhood dropped more than 12% after posting fourth-quarter revenue below analyst expectations.
- Freshworks slid more than 17% after issuing current-quarter earnings guidance weaker than expected.
- Upstart Holdings slipped 14% after its fourth-quarter adjusted EBITDA narrowly beat estimates.
- Teradata surged 25% after issuing a strong outlook.
- Lattice Semiconductor rallied 14% after issuing strong current-quarter guidance.
- Astera Labs plunged 19% after its first-quarter earnings guidance narrowly beat expectations.
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