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

Last update: Aug 18, 2025

Let's have a look at what is happening on the US markets before the opening bell on Monday. Below you can find the top S&P500 gainers and losers in today's pre-market session.


premarket

Gainers

TickerChangeComment
DAY24.62%DAYFORCE INC's (NYSE:DAY) shares rose 24.62% to $65.9 during Monday's pre-market session. In the last 6 months the stock lost 20.39%.
FSLR5.43%FIRST SOLAR INC's (NASDAQ:FSLR) shares rose 5.43% to $210.8 during Monday's pre-market session. Following yesterday's 11.05% increase, FSLR demonstrates further positive momentum in today's pre-market session with a 5.43% gain.
ENPH3.33%Exciting news for ENPHASE ENERGY INC (NASDAQ:ENPH) as their shares soared 3.33% to $36.0 during the pre-market session on Monday. Shareholders saw the stock price going 30.87% lower in the past 3 months.
UNH2.76%UNITEDHEALTH GROUP INC (NYSE:UNH) recorded a 2.76% increase in share price during the pre-market session, reaching $312.41 on Monday. Following yesterday's 11.98% increase, UNH demonstrates further positive momentum in today's pre-market session with a 2.76% gain.
EPAM2.66%Investors witnessed a remarkable surge in EPAM SYSTEMS INC (NYSE:EPAM) during Monday's pre-market session, with the stock price rising 2.66% to $161.9. Shareholders saw the stock price going 40.74% lower is the past 6 months.
CVS2.07%CVS HEALTH CORP (NYSE:CVS) experienced an impressive 2.07% increase in share price, reaching $70.02 during the pre-market session on Monday.
BIIB2.04%BIOGEN INC (NASDAQ:BIIB) recorded a 2.04% increase in share price during the pre-market session, reaching $141.42 on Monday. The stock is trading 31.36% lower than a year ago.

For the full premarket gainers list go to our premarket gainers page.

BIOGEN INC

NASDAQ:BIIB (1/30/2026, 8:00:02 PM)

After market: 178.81 -1.08 (-0.6%)

179.89

+3.71 (+2.11%)


UNITEDHEALTH GROUP INC

NYSE:UNH (1/30/2026, 8:22:37 PM)

After market: 286.28 -0.65 (-0.23%)

286.93

-5.36 (-1.83%)


CVS HEALTH CORP

NYSE:CVS (1/30/2026, 8:04:00 PM)

After market: 74.3699 -0.15 (-0.2%)

74.52

+0.08 (+0.11%)


FIRST SOLAR INC

NASDAQ:FSLR (1/30/2026, 8:00:00 PM)

After market: 224.31 -1.21 (-0.54%)

225.52

+1.51 (+0.67%)


EPAM SYSTEMS INC

NYSE:EPAM (1/30/2026, 8:04:00 PM)

After market: 208.6 0 (0%)

208.6

-0.32 (-0.15%)


ENPHASE ENERGY INC

NASDAQ:ENPH (1/30/2026, 8:00:02 PM)

After market: 36.8792 -0.1 (-0.27%)

36.98

-1.27 (-3.32%)


DAYFORCE INC

NYSE:DAY (1/30/2026, 8:04:00 PM)

After market: 69.05 -0.22 (-0.32%)

69.27

+0.11 (+0.16%)



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