Semiconductors
Semiconductors is losing market weight. Lost weight for 4 consecutive months.
Most of this industry's losses came from a few companies.
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 79% of gross losses. 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 – Sep 2018 · 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 | 0.695% | -0.590 pp | +0.1% | 0.0 |
| Texas Instruments → TXN | Semiconductors | United States | 0.332% | -0.284 pp | -1.0% | 0.0 |
| Qualcomm → QCOM | Semiconductors | United States | 0.337% | -0.239 pp | +8.5% | 0.0 |
| Micron Technology → MU | Semiconductors | United States | 0.167% | -0.121 pp | +3.5% | 0.0 |
| Analog Devices → ADI | Semiconductors | United States | 0.109% | -0.084 pp | +2.1% | 0.0 |
| Skyworks Solutions → SWKS | Semiconductors | United States | 0.052% | -0.050 pp | -5.7% | 0.0 |
| Microchip Technology → MCHP | Semiconductors | United States | 0.030% | -0.034 pp | -16.1% | 0.0 |
| Broadcom → AVGO | Semiconductors | United States | 0.033% | +0.033 pp | +3.1% | 0.0 |
| Advanced Micro Devices → AMD | Semiconductors | United States | 0.096% | +0.020 pp | +124.8% | 0.0 |
| Nvidia → NVDA | Semiconductors | United States | 0.014% | -0.008 pp | +14.5% | 0.0 |
Underlying monthly industry observations
| Month | Weight | 1M change | 3M change | 6M change | 12M change | Relative return · 12M |
|---|---|---|---|---|---|---|
| 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.