Semiconductors
Semiconductors is gaining market weight. Lost weight for 3 consecutive months.
The gain is shared across much of the industry.
Where did the weight change come from?
12-month contribution in universe percentage points · contributions add to the industry change
The three largest same-direction contributors explain 61% of gross gains. Opposing contributions can make an individual company’s change larger than the industry’s net change.
How has it moved through history?
Share of matched S&P 500 members
Jan 2018 – Feb 2021 · market weight (%)
Relative performance
Industry return versus ACWI · no future data shown
Is participation broad or concentrated?
Actual constituent counts at this date, not the legacy synthetic breadth proxy
This is size concentration, not contribution to the 12-month change. The attribution above measures the latter.
Evidence can disagree
Independent dimensions · no combined score or bullish/bearish verdict
Other evidence and availability
Valuation data: unavailable; shown as zero placeholder.
Attention data: unavailable; shown as zero placeholder.
Actual fund flows: unavailable. No ETF, mutual-fund or institutional flow feed is connected.
Volume / turnover: unavailable in this dataset.
Follow the contribution to individual companies
Sorted by absolute 12-month weight contribution, not investment merit
| Company | Sub-industry | Country | Universe weight | 12M contribution | 12M price return | Revisions |
|---|---|---|---|---|---|---|
| Intel → INTC | Semiconductors | United States | 0.494% | +0.493 pp | +12.3% | 0.0 |
| Texas Instruments → TXN | Semiconductors | United States | 0.317% | +0.316 pp | +55.2% | 0.0 |
| Qualcomm → QCOM | Semiconductors | United States | 0.309% | +0.309 pp | +78.4% | 0.0 |
| Micron Technology → MU | Semiconductors | United States | 0.205% | +0.204 pp | +74.1% | 0.0 |
| Advanced Micro Devices → AMD | Semiconductors | United States | 0.205% | +0.204 pp | +85.8% | 0.0 |
| Analog Devices → ADI | Semiconductors | United States | 0.115% | +0.115 pp | +45.7% | 0.0 |
| Skyworks Solutions → SWKS | Semiconductors | United States | 0.059% | +0.059 pp | +79.9% | 0.0 |
| Microchip Technology → MCHP | Semiconductors | United States | 0.041% | +0.041 pp | +70.5% | 0.0 |
| Broadcom → AVGO | Semiconductors | United States | 0.038% | +0.038 pp | +80.2% | 0.0 |
| Monolithic Power Systems → MPWR | Semiconductors | United States | 0.034% | +0.034 pp | +138.1% | 0.0 |
| Nvidia → NVDA | Semiconductors | United States | 0.017% | +0.017 pp | +103.3% | 0.0 |
Underlying monthly industry observations
| Month | Weight | 1M change | 3M change | 6M change | 12M change | Relative return · 12M |
|---|---|---|---|---|---|---|
| Feb 2021 | 1.832% | -0.256 pp | -1.617 pp | +1.829 pp | +1.830 pp | +13.4% |
| Jan 2021 | 2.089% | -1.331 pp | -1.237 pp | +2.085 pp | -1.276 pp | +11.7% |
| Dec 2020 | 3.420% | -0.030 pp | +3.416 pp | +3.416 pp | +0.060 pp | +9.7% |
| Nov 2020 | 3.450% | +0.124 pp | +3.446 pp | +3.446 pp | +0.216 pp | +13.8% |
| Oct 2020 | 3.326% | +3.322 pp | +3.322 pp | -0.298 pp | +0.066 pp | +11.6% |
| Sep 2020 | 0.004% | -0.000 pp | -0.000 pp | +0.001 pp | -3.183 pp | +15.8% |
| Aug 2020 | 0.004% | +0.000 pp | -0.000 pp | +0.001 pp | -3.160 pp | +14.4% |
| Jul 2020 | 0.003% | -0.000 pp | -3.620 pp | -3.361 pp | -3.167 pp | +11.8% |
| Jun 2020 | 0.004% | -0.000 pp | +0.001 pp | -3.356 pp | -3.065 pp | +25.0% |
| May 2020 | 0.004% | -3.620 pp | +0.001 pp | -3.230 pp | -2.971 pp | +31.5% |
| Apr 2020 | 3.624% | +3.621 pp | +0.259 pp | +0.364 pp | +0.264 pp | +19.4% |
| Mar 2020 | 0.003% | +0.000 pp | -3.357 pp | -3.184 pp | -3.209 pp | +19.9% |
| Feb 2020 | 0.003% | -3.362 pp | -3.232 pp | -3.161 pp | -3.180 pp | +14.6% |
| Jan 2020 | 3.365% | +0.004 pp | +0.105 pp | +0.195 pp | +1.679 pp | +22.6% |
| Dec 2019 | 3.360% | +0.126 pp | +0.173 pp | +0.291 pp | +1.599 pp | +15.8% |
| Nov 2019 | 3.234% | -0.025 pp | +0.070 pp | +0.260 pp | +1.491 pp | +13.8% |
| Oct 2019 | 3.259% | +0.073 pp | +0.089 pp | -0.100 pp | +1.482 pp | +14.1% |
| Sep 2019 | 3.187% | +0.023 pp | +0.118 pp | -0.025 pp | +1.323 pp | +9.0% |
| Aug 2019 | 3.164% | -0.006 pp | +0.189 pp | -0.018 pp | +1.241 pp | +5.5% |
| Jul 2019 | 3.170% | +0.101 pp | -0.189 pp | +1.484 pp | -0.218 pp | +7.7% |
| Jun 2019 | 3.069% | +0.094 pp | -0.143 pp | +1.308 pp | -0.426 pp | +0.9% |
| May 2019 | 2.975% | -0.385 pp | -0.208 pp | +1.231 pp | -0.680 pp | -9.1% |
| Apr 2019 | 3.360% | +0.148 pp | +1.674 pp | +1.582 pp | +0.034 pp | +12.4% |
| Mar 2019 | 3.211% | +0.029 pp | +1.451 pp | +1.347 pp | -0.247 pp | +2.9% |
| Feb 2019 | 3.182% | +1.496 pp | +1.439 pp | +1.259 pp | -0.224 pp | +3.1% |
| Jan 2019 | 1.686% | -0.075 pp | -0.092 pp | -1.702 pp | -1.536 pp | +2.7% |
| Dec 2018 | 1.761% | +0.018 pp | -0.103 pp | -1.734 pp | -1.460 pp | +6.7% |
| Nov 2018 | 1.743% | -0.034 pp | -0.180 pp | -1.911 pp | -1.478 pp | +5.2% |
| Oct 2018 | 1.778% | -0.087 pp | -1.610 pp | -1.548 pp | -1.444 pp | +3.2% |
| Sep 2018 | 1.864% | -0.059 pp | -1.631 pp | -1.594 pp | -1.357 pp | +5.9% |
| Aug 2018 | 1.923% | -1.464 pp | -1.731 pp | -1.483 pp | -1.298 pp | +8.2% |
| Jul 2018 | 3.388% | -0.107 pp | +0.062 pp | +0.166 pp | +0.166 pp | +5.8% |
| Jun 2018 | 3.495% | -0.160 pp | +0.036 pp | +0.274 pp | +0.274 pp | +7.4% |
| May 2018 | 3.655% | +0.329 pp | +0.248 pp | +0.433 pp | +0.433 pp | +13.7% |
| Apr 2018 | 3.326% | -0.133 pp | +0.104 pp | +0.104 pp | +0.104 pp | +2.1% |
| Mar 2018 | 3.459% | +0.052 pp | +0.237 pp | +0.237 pp | +0.237 pp | +6.7% |
| Feb 2018 | 3.406% | +0.185 pp | +0.185 pp | +0.185 pp | +0.185 pp | +6.0% |
| Jan 2018 | 3.221% | +0.000 pp | +0.000 pp | +0.000 pp | +0.000 pp | +0.0% |
How are these descriptive states defined?
Gaining / losing: 12-month weight change above +0.005pp / below −0.005pp. Direction and speed are separate dimensions, not mutually exclusive recommendations.
Accelerating / slowing: compare the most recent 3M change with the preceding 3M change. Accelerating means a positive change speeds up by >0.02pp. Slowing means the magnitude of movement declines by >0.02pp. A falling industry can also slow.
Reversing: the last two 3M changes have opposite signs, outside a ±0.005pp tolerance. Persistence counts consecutive same-direction monthly changes.
Broad / concentrated: company attribution, not a market-cap concentration shortcut. Concentrated means the three largest same-direction contributors account for ≥70% of gross same-direction changes; otherwise broad requires ≥60% of constituents moving with the industry. Other cases are mixed.
Weights use matched S&P 500 members’ market-cap estimates, based on SEC-reported shares available by each month-end and monthly closing prices. Companies without a matched price or share record are omitted, so the denominator is the matched sample rather than every index member. These are not official float-adjusted S&P weights. Flow is not measured.