Which S&P500 stocks are moving before the opening bell on Wednesday?
By Mill Chart
Last update: Oct 29, 2025
Before the opening bell on Wednesday, let's take a glimpse of the US markets and explore the S&P500 top gainers and losers in today's pre-market session.
Pre-market gainers
| Ticker | Change | Comment |
|---|---|---|
| TER | 18.04% | During Wednesday's pre-market session, TERADYNE INC (NASDAQ:TER) exhibited strong growth, with the stock price climbing 18.04% to $170.42. Yesterday the company had a press release: Teradyne Announces Chief Financial Officer Transition. |
| FTV | 12.9% | During Wednesday's pre-market trading, FORTIVE CORP (NYSE:FTV) demonstrated strong momentum, with the stock price rising 12.9% to $55.5. The company's earnings where released Yesterday. A press release (Fortive Reports Third Quarter 2025 Results) was released earlier today. |
| CTSH | 7.27% | COGNIZANT TECH SOLUTIONS-A's (NASDAQ:CTSH) stock price is advancing with 7.27% to a price of $72.75. The company's earnings where released Yesterday. |
| CNC | 6.96% | CENTENE CORP (NYSE:CNC) rose 6.96% to $35.5 during Wednesday's pre-market session. The company's earnings where released Yesterday. In the last 3 months the share price increased with 28.1%. |
| STX | 6.68% | SEAGATE TECHNOLOGY HOLDINGS (NASDAQ:STX) recorded a 6.68% increase in share price during the pre-market session, reaching $237.89 on Wednesday. A press release (Seagate Technology Reports Fiscal First Quarter 2026 Financial Results) was released yesterday. |
| CAT | 5.77% | Investors witnessed a remarkable surge in CATERPILLAR INC (NYSE:CAT) during Wednesday's pre-market session, with the stock price rising 5.77% to $554.73. CATERPILLAR INC released earnings Yesterday. Shareholders saw the stock price going 22.34% higher in the past 3 months. |
| AEP | 5.12% | AMERICAN ELECTRIC POWER's (NASDAQ:AEP) stock price increased by 5.12% to $121.0. yesterday the company released their earnings. |
| ODFL | 4.96% | During Wednesday's pre-market session, OLD DOMINION FREIGHT LINE (NASDAQ:ODFL) experienced a 4.96% increase, with the stock price reaching $142.84. OLD DOMINION FREIGHT LINE released earnings Yesterday. Earlier today the company had a press release: Old Dominion Freight Line Reports Third Quarter 2025 Earnings Per Diluted Share of $1.28. |
| CHTR | 4.54% | CHARTER COMMUNICATIONS INC-A (NASDAQ:CHTR) recorded a 4.54% increase in share price during the pre-market session, reaching $260.17 on Wednesday. Today CHTR is releasing earnings. In the last 6 months the share price dropped with 35.36%. |
| WDC | 4.46% | WESTERN DIGITAL CORP (NASDAQ:WDC) experienced an impressive 4.46% increase in share price, reaching $130.49 during the pre-market session on Wednesday. WDC is releasing earnings today. In the last 3 months the stock gained 63.19%. |
For the full premarket gainers list go to our premarket gainers page.
Today's pre-market losers
| Ticker | Change | Comment |
|---|---|---|
| FI | -39.88% | The stock price of FISERV INC (NYSE:FI) is declining by 39.88%, reaching $75.85 during Wednesday's pre-market session. The company's earnings where released Yesterday. Earlier today the company had a press release: Fiserv Announces Transfer of Stock Exchange Listing to Nasdaq. |
| GRMN | -11.56% | Despite yesterday's decline, GARMIN LTD (NYSE:GRMN) experienced a further 11.56% decrease in share price during Wednesday's pre-market session, reaching $219.4. GARMIN LTD released earnings Yesterday. The stock is trading 29.36% higher than 6 months ago. |
| GNRC | -10.57% | Despite yesterday's decline, GENERAC HOLDINGS INC (NYSE:GNRC) experienced a further 10.57% decrease in share price during Wednesday's pre-market session, reaching $170.05. GENERAC HOLDINGS INC released earnings Yesterday. The stock is trading 65.98% higher than 6 months ago. |
| VRSK | -9.53% | VERISK ANALYTICS INC's (NASDAQ:VRSK) stock price decreased by 9.53% to $210.0. The company's earnings where released Yesterday. A press release (Verisk Reports Third-Quarter 2025 Financial Results) was released earlier today. |
| MAS | -7.2% | The pre-market session on Wednesday witnessed a 7.2% decrease in MASCO CORP's (NYSE:MAS) shares, with the stock price falling to $63.5. MASCO CORP released earnings Yesterday. A press release (Masco Corporation Reports Third Quarter 2025 Results) was released earlier today. |
| FIS | -6.95% | FIDELITY NATIONAL INFO SERV's (NYSE:FIS) stock price decreased by 6.95% to $61.35. A press release (FIS Wins ALM Solution of the Year at Risk Asia Awards 2025) was released earlier today. |
| MDLZ | -4.7% | MONDELEZ INTERNATIONAL INC-A's (NASDAQ:MDLZ) shares fell 4.7% to $57.38 during Wednesday's pre-market session. |
| CSGP | -4.64% | COSTAR GROUP INC's (NASDAQ:CSGP) stock price decreased by 4.64% to $74.6. A press release (CoStar Upgrades U.S. Office Projections Through 2026) was released earlier today. |
| SW | -4.34% | Today's pre-market session reveals a 4.34% decline in the stock price of SMURFIT WESTROCK PLC (NYSE:SW), now priced at $41.22. SMURFIT WESTROCK PLC released earnings Yesterday. A press release (Smurfit Westrock Reports Third Quarter 2025 Results) was released earlier today. |
| GPN | -4.31% | Today's pre-market session reveals a 4.31% decline in the stock price of GLOBAL PAYMENTS INC (NYSE:GPN), now priced at $81.94. |
To see the full list of premarket losers you can use our premarket losers page.
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