02:22 PM EDT, 07/21/2026 (MT Newswires) -- Zhengye Biotechnology ( ZYBT ) said Tuesday it isn't aware of any material developments behind the stock's unusual trading activity.

The stock slumped 71% as intraday volume topped 34.3 million shares, compared with the daily average of 2.76 million.

Danaher's ( DHR ) shares fell 11% after the company tempered full-year revenue-growth guidance even as fiscal Q2 topped estimates.

Volume topped 18.2 million shares, compared with the daily average of 4.63 million.

MSCI ( MSCI ) shares fell 9.5% after Q2 adjusted EPS trailed estimates in a FactSet survey, and Raymond James cut its price target on the stock.

Volume topped 1.35 million shares, compared with the daily average of 661,000.

Price: 2.33, Change: -5.68, Percent Change: -70.91