While Pentair struggled, other market movers saw significant volatility following earnings and regulatory updates. Aehr Test Systems shares surged 27% to $91.56 after the bell, bolstered by a return to profitability in its fiscal fourth quarter.
In section Market Quotes
Pentair Slides as Sales Stumble and CFO Departs
A 13% drop in after-hours trading for Pentair followed the company’s decision to slash its annual revenue outlook and announce the immediate resignation of its chief financial officer. The slump reflects a broader cooling in demand for pool equipment that has rattled investor confidence in the firm's near-term performance.

Celcuity experienced a more complex trading session. Following FDA approval for its breast cancer treatment, Revtorpyk, the stock initially climbed 7% to close at $11.05. However, momentum reversed in after-hours trading, with shares falling 5.5% to $10.00. Meanwhile, Schmid Group saw its stock rise 11% to $5.02 after the company raised its full-year order intake guidance.
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