What's going on in today's after hours session: S&P500 movers

By Mill Chart - Last update: Jul 21, 2025

As the regular session of the US market concludes on Monday, let's get an insight into the after-hours session and identify the top gainers and losers in the S&P500 index.


postmarket

Today's after hours losers

TickerChangeComment
NXPI-4.62%Today's after-hours session sees a continuation of the %ABSPERF% decrease earlier in the day for NXP SEMICONDUCTORS NV (NASDAQ:NXPI). NXP SEMICONDUCTORS NV released earnings Yesterday.
STLD-4.11%STEEL DYNAMICS INC's (NASDAQ:STLD) shares declined by 4.11% to $129.0 during Monday's after-hours session. yesterday the company released their earnings.
ON-2.89%ON SEMICONDUCTOR's (NASDAQ:ON) stock price is declining with 2.89% to a price of $58.8. The stock is trading 52.79% higher than 3 months ago.
MCHP-2.37%MICROCHIP TECHNOLOGY INC's (NASDAQ:MCHP) shares experienced a 2.37% decrease to $72.1 in the after-hours session. The stock is trading 57.5% higher than 3 months ago.
ADI-2.28%ANALOG DEVICES INC's (NASDAQ:ADI) stock price decreased by 2.28% to $235.0. In the last 3 months the stock gained 23.58%.

For the full after hours loser list go to our after hours losers page.

STEEL DYNAMICS INC

NASDAQ:STLD (2/20/2026, 8:06:14 PM)

Premarket: 191.8 -1.59 (-0.82%)

193.39

+2.81 (+1.47%)


ANALOG DEVICES INC

NASDAQ:ADI (2/20/2026, 8:15:55 PM)

Premarket: 351.88 -3.15 (-0.89%)

355.03

+9.73 (+2.82%)


MICROCHIP TECHNOLOGY INC

NASDAQ:MCHP (2/20/2026, 8:00:01 PM)

After market: 77.8453 +0.12 (+0.15%)

77.73

+0.57 (+0.74%)


NXP SEMICONDUCTORS NV

NASDAQ:NXPI (2/20/2026, 8:00:01 PM)

Premarket: 232.29 +0.02 (+0.01%)

232.27

+0.16 (+0.07%)


ON SEMICONDUCTOR

NASDAQ:ON (2/20/2026, 8:00:01 PM)

Premarket: 68.7 -0.41 (-0.59%)

69.11

+1.02 (+1.5%)



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