Planet Fitness (PLNT) shares tumbled 32% after the company Thursday tempered its full-year outlook amid fewer-than-expected member additions in Q1.

More than 12.7 million shares of the company traded intraday compared with a daily average of about 1.8 million.

Zoetis (ZTS) reported Q1 adjusted earnings and revenue Thursday below market expectations, while scaling back its full-year 2026 guidance.

Shares sank 20% following a surge in intraday trading volume to over 22.4 million from a daily average of about 4 million.

ARM (ARM) Chief Executive Rene Haas said, in an earnings call with investors, that while demand for ARM's new AGI CPU doubled to $2 billion within six weeks of its launch, the company has only secured enough manufacturing capacity to fulfill half of those orders.

Shares dropped 10%, with intraday trading volume at over 18.9 million versus a daily average of about 7.4 million.

Price: 43.38, Change: -20.59, Percent Change: -32.18