Wondering what's happening in today's S&P500 pre-market session?

Last update: Oct 20, 2025

Get insights into the top gainers and losers in the S&P500 index of Monday's pre-market session.


premarket

Gainers

TickerChangeComment
COO6.43%COOPER COS INC/THE (NASDAQ:COO) experienced an impressive 6.43% increase in share price, reaching $76.6 during the pre-market session on Monday. Shareholders saw the stock price going 33.52% lower is the past year.
HOLX5.41%Exciting news for HOLOGIC INC (NASDAQ:HOLX) as their shares soared 5.41% to $73.63 during the pre-market session on Monday. Shareholders saw the stock price going 21.35% higher is the past 6 months.
MU4.3%During Monday's pre-market session, MICRON TECHNOLOGY INC (NASDAQ:MU) experienced a 4.3% increase, with the stock price reaching $211.09. Shareholders saw the stock price going 24.37% higher in the past month.
SMCI3.97%The pre-market session on Monday saw a significant rise in SUPER MICRO COMPUTER INC's (NASDAQ:SMCI) shares, climbing 3.97% to $54.25. The stock is trading 65.62% higher than 6 months ago.
HOOD3.07%Investors witnessed a remarkable surge in ROBINHOOD MARKETS INC - A (NASDAQ:HOOD) during Monday's pre-market session, with the stock price rising 3.07% to $133.9. In the last 6 months the stock gained 215.0%.
STLD2.76%STEEL DYNAMICS INC (NASDAQ:STLD) recorded a 2.76% increase in share price during the pre-market session, reaching $146.69 on Monday. The company's earnings where released Yesterday. In the last 6 months the stock gained 20.68%.
COIN2.63%COINBASE GLOBAL INC -CLASS A (NASDAQ:COIN) experienced an impressive 2.63% increase in share price, reaching $344.85 during the pre-market session on Monday. The stock is trading 91.98% higher than 6 months ago.
IFF2.41%INTL FLAVORS & FRAGRANCES's (NYSE:IFF) shares surged 2.41% to reach $65.29 during the pre-market session on Monday. The stock is trading 39.0% lower than a year ago.
STX2.24%During Monday's pre-market trading, SEAGATE TECHNOLOGY HOLDINGS (NASDAQ:STX) demonstrated strong momentum, with the stock price rising 2.24% to $230.46. Shareholders saw the stock price going 51.2% higher in the past 3 months.
WDC2.23%WESTERN DIGITAL CORP's (NASDAQ:WDC) shares surged 2.23% to reach $129.01 during the pre-market session on Monday. Shareholders saw the stock price going 85.59% higher in the past 3 months.

Our premarket gainers page will show you the full list.

STEEL DYNAMICS INC

NASDAQ:STLD (1/29/2026, 2:58:57 PM)

181.585

+7.21 (+4.13%)


INTL FLAVORS & FRAGRANCES

NYSE:IFF (1/29/2026, 2:59:02 PM)

68.96

-3.2 (-4.43%)


HOLOGIC INC

NASDAQ:HOLX (1/29/2026, 2:59:01 PM)

75.02

-0.08 (-0.11%)


COOPER COS INC/THE

NASDAQ:COO (1/29/2026, 2:59:08 PM)

79.96

-0.52 (-0.65%)


SEAGATE TECHNOLOGY HOLDINGS

NASDAQ:STX (1/29/2026, 2:59:09 PM)

447.86

+4.93 (+1.11%)


WESTERN DIGITAL CORP

NASDAQ:WDC (1/29/2026, 2:59:09 PM)

280.05

+0.35 (+0.13%)


SUPER MICRO COMPUTER INC

NASDAQ:SMCI (1/29/2026, 2:59:10 PM)

30

-1.21 (-3.88%)


MICRON TECHNOLOGY INC

NASDAQ:MU (1/29/2026, 2:59:09 PM)

433.28

-2 (-0.46%)


COINBASE GLOBAL INC -CLASS A

NASDAQ:COIN (1/29/2026, 2:59:08 PM)

196.408

-13.02 (-6.22%)


ROBINHOOD MARKETS INC - A

NASDAQ:HOOD (1/29/2026, 2:59:09 PM)

100

-3.4 (-3.29%)



Find more stocks in the Stock Screener

STLD Latest News and Analysis

Follow ChartMill for more
Follow us on StockTwitsFollow us on InstagramFollow us on FacebookFollow us on YouTube