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

By Mill Chart

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.


premarket

Gainers

TickerChangeComment
WDC5.52%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.
STX4.95%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.
KLAC4.71%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%.
MU4.65%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%.
EL4.61%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.
TER4.48%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.
AMAT4.31%APPLIED MATERIALS INC's (NASDAQ:AMAT) stock price increased by 4.31% to $219.0. In the last month the stock gained 25.12%.
MPWR4.24%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%.
LRCX4.19%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.
ON3.98%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.

ESTEE LAUDER COMPANIES-CL A

NYSE:EL (1/20/2026, 8:04:00 PM)

After market: 114.15 -0.31 (-0.27%)

114.46

-0.59 (-0.51%)


SEAGATE TECHNOLOGY HOLDINGS

NASDAQ:STX (1/20/2026, 8:21:34 PM)

After market: 328 +2.01 (+0.62%)

325.99

-0.24 (-0.07%)


WESTERN DIGITAL CORP

NASDAQ:WDC (1/20/2026, 8:28:02 PM)

After market: 226.5 +3.53 (+1.58%)

222.97

+1.46 (+0.66%)


MONOLITHIC POWER SYSTEMS INC

NASDAQ:MPWR (1/20/2026, 8:00:29 PM)

After market: 1037.27 +2.78 (+0.27%)

1034.49

+1.32 (+0.13%)


APPLIED MATERIALS INC

NASDAQ:AMAT (1/20/2026, 8:00:01 PM)

After market: 319.31 +1.08 (+0.34%)

318.23

-8.78 (-2.68%)


KLA CORP

NASDAQ:KLAC (1/20/2026, 11:02:18 PM)

After market: 1499.99 +13.81 (+0.93%)

1486.18

-81.64 (-5.21%)


LAM RESEARCH CORP

NASDAQ:LRCX (1/20/2026, 11:04:17 PM)

After market: 223.7 +1.29 (+0.58%)

222.41

-0.55 (-0.25%)


TERADYNE INC

NASDAQ:TER (1/20/2026, 8:22:52 PM)

After market: 224.99 +1.01 (+0.45%)

223.98

-4.17 (-1.83%)


MICRON TECHNOLOGY INC

NASDAQ:MU (1/20/2026, 11:12:34 PM)

After market: 369.557 +4.56 (+1.25%)

365

+2.25 (+0.62%)


ON SEMICONDUCTOR

NASDAQ:ON (1/20/2026, 8:07:51 PM)

After market: 60.76 +0.7 (+1.17%)

60.06

-0.27 (-0.45%)



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