These stocks in the S&P 500 fell the most on Tuesday as the tech sector came under pressure
Broad U.S. stock indexes were all down on Tuesday, with tech-hardware stocks seeing especially sharp pullbacks.
The S&P 500 SPX declined 1.4%, while its information-technology sector XX:SP500.45 was down 3.7%.
Most Read from MarketWatch
Digging further into tech, the iShares Semiconductor ETF SOXX was down 7.9% on the day. This exchange-traded fund holds 30 stocks tracking the PHLX Semiconductor Index SOX — and all of them declined on Tuesday.
Granted, it is worth putting those performances into perspective. The S&P 500’s IT sector was still up 16.6% for 2026, while the SOXX was still up 100.4% on the year.
Here were the day’s worst performers among the S&P 500, based on data provided by LSEG:
|
Company |
June 23 price change |
June price change |
2026 price change |
2025 price change |
|
Sandisk SNDK |
-13.6% |
15.8% |
727.2% |
N/A |
|
Micron Technology MU |
-13.2% |
8.3% |
268.5% |
239.1% |
|
Vertiv Holdings VRT |
-11.1% |
0.8% |
96.5% |
42.6% |
|
ON Semiconductor ON |
-11.0% |
-3.0% |
116.2% |
-14.1% |
|
Coherent COHR |
-10.4% |
5.5% |
106.5% |
94.8% |
|
Marvell Technology MRVL |
-9.4% |
36.1% |
228.4% |
-23.1% |
|
Lam Research LRCX |
-9.3% |
16.7% |
116.9% |
137.0% |
|
Microchip Technology MCHP |
-9.2% |
-1.5% |
46.4% |
11.1% |
|
KLA KLAC |
-9.2% |
27.2% |
101.2% |
92.8% |
|
Analog Devices ADI |
-8.6% |
-1.6% |
50.2% |
27.6% |
|
Applied Materials AMAT |
-8.5% |
30.2% |
128.0% |
58.0% |
|
Western Digital WDC |
-8.4% |
26.3% |
289.4% |
282.3% |
|
Texas Instruments TXN |
-8.4% |
-0.4% |
75.4% |
-7.5% |
|
Qnity Electronics Q |
-8.2% |
3.3% |
97.4% |
N/A |
|
GE Vernova GEV |
-8.2% |
6.9% |
58.4% |
98.7% |
|
Teradyne TER |
-8.1% |
12.2% |
117.0% |
53.7% |
|
Qualcomm AVGO |
-8.0% |
-18.7% |
19.3% |
11.3% |
|
Comfort Systems USA FIX |
-7.7% |
4.4% |
104.4% |
120.1% |
|
Corning GLW |
-7.5% |
7.1% |
121.6% |
84.3% |
|
Monolithic Power Systems MPWR |
-7.4% |
-9.1% |
57.1% |
53.2% |
|
Source: LSEG |
||||
The S&P 500’s largest decliners on Tuesday — Sandisk SNDK and Micron MU — both manufacture memory chips and related hardware. These stocks were still up for June and were showing triple-digit year-to-date gains.
The high volatility during Tuesday’s trading session could wind up being a momentary blip as the infrastructure buildout to support generative artificial intelligence continues.
Micron reports earnings on Wednesday afternoon. That will mark a key test for the semiconductor sector.
Isabel Wang: Are falling tech stocks the start of an overdue selloff — or a well-deserved pause?