What's going on in today's pre-market session: S&P500 movers

Last update: Oct 13, 2025

The US market is yet to commence its session on Monday, but let's get a preview of the pre-market session and explore the top S&P500 gainers and losers driving the early market movements.

Gainers

Ticker	Change	Comment
WDC	5.52%	The pre-market session on Monday saw a significant rise in WESTERN DIGITAL CORP's (NASDAQ:WDC) shares, climbing 5.52% to $121.79. Shareholders saw the stock price going 74.51% higher in the past 3 months.
STX	4.95%	During Monday's pre-market trading, SEAGATE TECHNOLOGY HOLDINGS (NASDAQ:STX) demonstrated strong momentum, with the stock price rising 4.95% to $225.0. The stock is trading 45.66% higher than 3 months ago.
KLAC	4.71%	Pre-market trading on Monday showed positive momentum for KLA CORP (NASDAQ:KLAC), as the stock price advanced 4.71% to reach $1.03K. In the last 6 months the share price increased with 46.63%.
MU	4.65%	During Monday's pre-market session, MICRON TECHNOLOGY INC (NASDAQ:MU) experienced a 4.65% increase, with the stock price reaching $190.05. In the last 3 months the stock gained 45.83%.
EL	4.61%	ESTEE LAUDER COMPANIES-CL A's (NYSE:EL) shares rose 4.61% to $91.69. The stock is trading 58.7% higher than 6 months ago.
TER	4.48%	TERADYNE INC's (NASDAQ:TER) stock price increased by 4.48% to $138.0. The stock is trading 36.09% higher than 3 months ago.
AMAT	4.31%	APPLIED MATERIALS INC's (NASDAQ:AMAT) stock price increased by 4.31% to $219.0. In the last month the stock gained 25.12%.
MPWR	4.24%	During Monday's pre-market trading, MONOLITHIC POWER SYSTEMS INC (NASDAQ:MPWR) demonstrated strong momentum, with the stock price rising 4.24% to $942.75. In the last 3 months the share price increased with 22.88%.
LRCX	4.19%	LAM RESEARCH CORP (NASDAQ:LRCX) recorded a 4.19% increase in share price during the pre-market session, reaching $136.87 on Monday. Shareholders saw the stock price going 29.14% higher in the past 3 months.
ON	3.98%	Pre-market trading on Monday showed positive momentum for ON SEMICONDUCTOR (NASDAQ:ON), as the stock price advanced 3.98% to reach $47.56. Shareholders saw the stock price going 23.42% lower in the past 3 months.

To see the full list of premarket gainers you can use our premarket gainers page.