This tracks how US Semiconductors is performing against the S&P 500: the relative-strength read traders use to find themes gaining momentum and the strongest stocks within them. Look for three things: whether it is gaining or losing ground on the index, whether the move is broad or led by a few large names, and which stocks lead on relative strength.
Current read · as at 15 Oct 2026
US Semiconductors is underperforming the S&P 500 and losing ground (the lagging zone of the rotation chart). It is up 4.3% over the past month and 58.5% year to date. 4 of 20 stocks are above their 50-day average, with only a minority participating. On 3-month relative strength, MRVL.US, AMD.US and MU.US lead the theme, and TER.US has climbed the most in rank.
Relative strength is measured against S&P 500, centred at 100. Above 100 means it outpaced the benchmark.
Performance charts
Rebased to 100 vs S&P 500
End of day
US Semiconductors vs S&P 500
Rising = outperforming
100 = matches benchmark. Above = outpacing it; below = lagging.
What's underneath the leaders
End of day
Latest-day drivers
- MRVL.US-8.72%-0.44%
- ARM.US-6.81%-0.34%
- MPWR.US-5.79%-0.29%
Top 3 account for 25% of the total move.
Contribution is each holding's weight times its one-day move.
Emerging leaders (3-month rank)
- 1MRVL.US+3
- 2AMD.US-1
- 3MU.US-1
- 4TER.US+15
- 5NVDA.US+10
Rank 1 = strongest 3-month move. Delta is the rank change; positive means improving.
Breadth and Effective N measure how widely the basket is moving right now — a participation gauge, not a forecast.
Constituents
Weights and contribution to the basket move
ADI.US | Analog Devices Inc | $403.57 | -2.68% | 5.0% | -0.13% |
AMAT.US | Applied Materials Inc | $446.63 | -3.79% | 5.0% | -0.19% |
AMD.US | Advanced Micro Devices Inc | $570.82 | -5.73% | 5.0% | -0.29% |
ARM.US | Arm Holdings plc American Depositary Shares | $238.01 | -6.81% | 5.0% | -0.34% |
ASML.US | ASML Holding N.V. New York Registry Shares | $1,650.00 | -3.94% | 5.0% | -0.20% |
AVGO.US | Broadcom Inc | $346.25 | -3.10% | 5.0% | -0.15% |
INTC.US | Intel Corporation | $98.12 | -4.56% | 5.0% | -0.23% |
KLAC.US | KLA Corporation | $178.81 | -2.82% | 5.0% | -0.14% |
LRCX.US | Lam Research Corp | $286.92 | -4.71% | 5.0% | -0.24% |
MCHP.US | Microchip Technology Inc | $71.25 | -3.92% | 5.0% | -0.20% |
MPWR.US | Monolithic Power Systems Inc | $1,243.11 | -5.79% | 5.0% | -0.29% |
MRVL.US | Marvell Technology Group Ltd | $245.28 | -8.72% | 5.0% | -0.44% |
MU.US | Micron Technology Inc | $914.13 | -4.10% | 5.0% | -0.20% |
NVDA.US | NVIDIA Corporation | $221.30 | -3.16% | 5.0% | -0.16% |
NXPI.US | NXP Semiconductors NV | $220.83 | -2.43% | 5.0% | -0.12% |
ON.US | ON Semiconductor Corporation | $73.36 | -4.34% | 5.0% | -0.22% |
QCOM.US | Qualcomm Incorporated | $172.62 | -2.40% | 5.0% | -0.12% |
TER.US | Teradyne Inc | $359.44 | -5.48% | 5.0% | -0.27% |
TSM.US | Taiwan Semiconductor Manufacturing | $430.00 | -3.40% | 5.0% | -0.17% |
TXN.US | Texas Instruments Incorporated | $280.65 | -2.50% | 5.0% | -0.13% |
ADI.US
Analog Devices Inc
- Last
- $403.57
- 1D
- -2.68%
- Weight
- 5.0%
- Contribution
- -0.13%
AMAT.US
Applied Materials Inc
- Last
- $446.63
- 1D
- -3.79%
- Weight
- 5.0%
- Contribution
- -0.19%
AMD.US
Advanced Micro Devices Inc
- Last
- $570.82
- 1D
- -5.73%
- Weight
- 5.0%
- Contribution
- -0.29%
ARM.US
Arm Holdings plc American Depositary Shares
- Last
- $238.01
- 1D
- -6.81%
- Weight
- 5.0%
- Contribution
- -0.34%
ASML.US
ASML Holding N.V. New York Registry Shares
- Last
- $1,650.00
- 1D
- -3.94%
- Weight
- 5.0%
- Contribution
- -0.20%
AVGO.US
Broadcom Inc
- Last
- $346.25
- 1D
- -3.10%
- Weight
- 5.0%
- Contribution
- -0.15%
INTC.US
Intel Corporation
- Last
- $98.12
- 1D
- -4.56%
- Weight
- 5.0%
- Contribution
- -0.23%
KLAC.US
KLA Corporation
- Last
- $178.81
- 1D
- -2.82%
- Weight
- 5.0%
- Contribution
- -0.14%
LRCX.US
Lam Research Corp
- Last
- $286.92
- 1D
- -4.71%
- Weight
- 5.0%
- Contribution
- -0.24%
MCHP.US
Microchip Technology Inc
- Last
- $71.25
- 1D
- -3.92%
- Weight
- 5.0%
- Contribution
- -0.20%
MPWR.US
Monolithic Power Systems Inc
- Last
- $1,243.11
- 1D
- -5.79%
- Weight
- 5.0%
- Contribution
- -0.29%
MRVL.US
Marvell Technology Group Ltd
- Last
- $245.28
- 1D
- -8.72%
- Weight
- 5.0%
- Contribution
- -0.44%
MU.US
Micron Technology Inc
- Last
- $914.13
- 1D
- -4.10%
- Weight
- 5.0%
- Contribution
- -0.20%
NVDA.US
NVIDIA Corporation
- Last
- $221.30
- 1D
- -3.16%
- Weight
- 5.0%
- Contribution
- -0.16%
NXPI.US
NXP Semiconductors NV
- Last
- $220.83
- 1D
- -2.43%
- Weight
- 5.0%
- Contribution
- -0.12%
ON.US
ON Semiconductor Corporation
- Last
- $73.36
- 1D
- -4.34%
- Weight
- 5.0%
- Contribution
- -0.22%
QCOM.US
Qualcomm Incorporated
- Last
- $172.62
- 1D
- -2.40%
- Weight
- 5.0%
- Contribution
- -0.12%
TER.US
Teradyne Inc
- Last
- $359.44
- 1D
- -5.48%
- Weight
- 5.0%
- Contribution
- -0.27%
TSM.US
Taiwan Semiconductor Manufacturing
- Last
- $430.00
- 1D
- -3.40%
- Weight
- 5.0%
- Contribution
- -0.17%
TXN.US
Texas Instruments Incorporated
- Last
- $280.65
- 1D
- -2.50%
- Weight
- 5.0%
- Contribution
- -0.13%
Last price shown at full precision. Contribution is each holding's weight times its one-day move. A dash marks data pending after the latest end-of-day refresh.
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Equal weighted. Equal-weighted basket seeded from US-listed semiconductor and semiconductor-equipment companies, screened nightly from end-of-day data. Active US common stocks only, with a market cap of at least USD 500 million and a 90-day average daily value traded of at least USD 2 million, top 20 by market cap. NVDA and AVGO are also seeded in US Mega-cap Tech.