01:57 PM EDT, 10/29/2025 (MT Newswires) -- Stride's (LRN) shares sank 51% amid heavy trading after fiscal Q2, 2026 revenue guidance missed forecasts late Tuesday, and Wall Street analysts lowered their respective price targets on the stock.

More than 15.5 million shares traded intraday compared with a daily average of approximately 808,000.

Varonis Systems ( VRNS ) reported a year-over-year slump in Q3 non-GAAP earnings, and its sales grew at a slower pace than expectations.

The company also lowered its full-year 2025 non-GAAP diluted EPS and revenue guidance.

Shares slumped 45% as intraday trading volume soared to over 21.2 million from a daily average of about 1.4 million.

Fiserv ( FI ) reported on Wednesday lower-than-expected Q3 adjusted earnings and revenue, and also cut its 2025 outlook.

Shares plunged 42% as intraday trading volume rose to over 75.9 million from a daily average of about 4.4 million.

Price: 74.30, Change: -79.23, Percent Change: -51.61