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Observatory · observe first

Semiconductors

Semiconductors is losing market weight. Lost weight for 2 consecutive months.

Historical time machine
Historical observation
20182026
Declining fasterConcentrated

Most of this industry's losses came from a few companies.

Universe weight
3.07%
$0.78T
12-month change
-0.44 pp
6-month change
-0.55 pp
3-month change
-0.36 pp
Company participation
15%
above their 6M weight average

Where did the weight change come from?

12-month contribution in universe percentage points · contributions add to the industry change

Company attribution
Intel →-0.343 pp
All other companies-0.095 pp
Industry total-0.438 pp

The three largest same-direction contributors explain 71% 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 2022 · market weight (%)

0.12.03.920182019202020212022

Relative performance

Industry return versus ACWI · no future data shown

10212414720182019202020212022

Is participation broad or concentrated?

Actual constituent counts at this date, not the legacy synthetic breadth proxy

Above their 3M universe-weight average23%
Above their 6M universe-weight average15%
Above their 12M universe-weight average8%
Top 5 share of current industry market cap70.1%

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

Allocation · 12M-0.44 pp
Relative strength · 12M-9.7%
Price index return · 12M-28.2%
Earnings revisions · unavailable0.0
Allocation lost weight while relative performance fell. Fewer than half of constituents are above their 6M weight average. These observations need not agree.
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

CompanySub-industryCountryUniverse weight12M contribution12M price returnRevisions
Intel →
INTC
SemiconductorsUnited States0.416%-0.343 pp-50.0%0.0
ON Semiconductor →
ON
SemiconductorsUnited States0.106%+0.106 pp+36.2%0.0
Texas Instruments →
TXN
SemiconductorsUnited States0.556%-0.067 pp-17.3%0.0
Analog Devices →
ADI
SemiconductorsUnited States0.282%+0.065 pp-15.3%0.0
Micron Technology →
MU
SemiconductorsUnited States0.217%-0.063 pp-29.1%0.0
Nvidia →
NVDA
SemiconductorsUnited States0.119%-0.063 pp-41.4%0.0
Microchip Technology →
MCHP
SemiconductorsUnited States0.133%+0.059 pp-19.3%0.0
Skyworks Solutions →
SWKS
SemiconductorsUnited States0.054%-0.042 pp-47.3%0.0
Advanced Micro Devices →
AMD
SemiconductorsUnited States0.402%-0.036 pp-38.4%0.0
NXP Semiconductors →
NXPI
SemiconductorsUnited States0.152%-0.030 pp-23.3%0.0
Qualcomm →
QCOM
SemiconductorsUnited States0.499%-0.012 pp-10.7%0.0
Monolithic Power Systems →
MPWR
SemiconductorsUnited States0.067%-0.011 pp-24.5%0.0
Broadcom →
AVGO
SemiconductorsUnited States0.071%+0.001 pp-5.7%0.0
Underlying monthly industry observations
MonthWeight1M change3M change6M change12M changeRelative return · 12M
Sep 20223.072%-0.191 pp-0.360 pp-0.553 pp-0.438 pp-9.7%
Aug 20223.263%-0.201 pp-0.479 pp-0.534 pp-0.236 pp-4.7%
Jul 20223.464%+0.031 pp+0.071 pp-0.248 pp+0.033 pp-1.1%
Jun 20223.432%-0.310 pp-0.193 pp-0.466 pp-0.085 pp-8.0%
May 20223.742%+0.349 pp-0.055 pp-0.286 pp+0.292 pp+4.3%
Apr 20223.393%-0.232 pp-0.319 pp-0.014 pp-0.070 pp-2.3%
Mar 20223.625%-0.172 pp-0.273 pp+0.115 pp+1.697 pp-4.0%
Feb 20223.797%+0.085 pp-0.231 pp+0.298 pp+1.965 pp-1.9%
Jan 20223.712%-0.186 pp+0.305 pp+0.282 pp+1.623 pp-3.5%
Dec 20213.898%-0.130 pp+0.389 pp+0.381 pp+0.478 pp+5.3%
Nov 20214.028%+0.621 pp+0.530 pp+0.578 pp+0.579 pp+9.0%
Oct 20213.407%-0.103 pp-0.023 pp-0.056 pp+0.081 pp-4.0%
Sep 20213.510%+0.011 pp-0.008 pp+1.582 pp+3.506 pp-2.6%
Aug 20213.499%+0.069 pp+0.049 pp+1.666 pp+3.495 pp-0.3%
Jul 20213.430%-0.088 pp-0.033 pp+1.341 pp+3.427 pp+3.6%
Jun 20213.518%+0.068 pp+1.590 pp+0.098 pp+3.514 pp-2.0%
May 20213.450%-0.013 pp+1.618 pp+0.000 pp+3.446 pp-4.5%
Apr 20213.463%+1.535 pp+1.374 pp+0.137 pp-0.161 pp-4.7%
Mar 20211.928%+0.095 pp-1.492 pp+1.924 pp+1.925 pp+6.3%
Feb 20211.832%-0.256 pp-1.617 pp+1.829 pp+1.830 pp+13.4%
Jan 20212.089%-1.331 pp-1.237 pp+2.085 pp-1.276 pp+11.7%
Dec 20203.420%-0.030 pp+3.416 pp+3.416 pp+0.060 pp+9.7%
Nov 20203.450%+0.124 pp+3.446 pp+3.446 pp+0.216 pp+13.8%
Oct 20203.326%+3.322 pp+3.322 pp-0.298 pp+0.066 pp+11.6%
Sep 20200.004%-0.000 pp-0.000 pp+0.001 pp-3.183 pp+15.8%
Aug 20200.004%+0.000 pp-0.000 pp+0.001 pp-3.160 pp+14.4%
Jul 20200.003%-0.000 pp-3.620 pp-3.361 pp-3.167 pp+11.8%
Jun 20200.004%-0.000 pp+0.001 pp-3.356 pp-3.065 pp+25.0%
May 20200.004%-3.620 pp+0.001 pp-3.230 pp-2.971 pp+31.5%
Apr 20203.624%+3.621 pp+0.259 pp+0.364 pp+0.264 pp+19.4%
Mar 20200.003%+0.000 pp-3.357 pp-3.184 pp-3.209 pp+19.9%
Feb 20200.003%-3.362 pp-3.232 pp-3.161 pp-3.180 pp+14.6%
Jan 20203.365%+0.004 pp+0.105 pp+0.195 pp+1.679 pp+22.6%
Dec 20193.360%+0.126 pp+0.173 pp+0.291 pp+1.599 pp+15.8%
Nov 20193.234%-0.025 pp+0.070 pp+0.260 pp+1.491 pp+13.8%
Oct 20193.259%+0.073 pp+0.089 pp-0.100 pp+1.482 pp+14.1%
Sep 20193.187%+0.023 pp+0.118 pp-0.025 pp+1.323 pp+9.0%
Aug 20193.164%-0.006 pp+0.189 pp-0.018 pp+1.241 pp+5.5%
Jul 20193.170%+0.101 pp-0.189 pp+1.484 pp-0.218 pp+7.7%
Jun 20193.069%+0.094 pp-0.143 pp+1.308 pp-0.426 pp+0.9%
May 20192.975%-0.385 pp-0.208 pp+1.231 pp-0.680 pp-9.1%
Apr 20193.360%+0.148 pp+1.674 pp+1.582 pp+0.034 pp+12.4%
Mar 20193.211%+0.029 pp+1.451 pp+1.347 pp-0.247 pp+2.9%
Feb 20193.182%+1.496 pp+1.439 pp+1.259 pp-0.224 pp+3.1%
Jan 20191.686%-0.075 pp-0.092 pp-1.702 pp-1.536 pp+2.7%
Dec 20181.761%+0.018 pp-0.103 pp-1.734 pp-1.460 pp+6.7%
Nov 20181.743%-0.034 pp-0.180 pp-1.911 pp-1.478 pp+5.2%
Oct 20181.778%-0.087 pp-1.610 pp-1.548 pp-1.444 pp+3.2%
Sep 20181.864%-0.059 pp-1.631 pp-1.594 pp-1.357 pp+5.9%
Aug 20181.923%-1.464 pp-1.731 pp-1.483 pp-1.298 pp+8.2%
Jul 20183.388%-0.107 pp+0.062 pp+0.166 pp+0.166 pp+5.8%
Jun 20183.495%-0.160 pp+0.036 pp+0.274 pp+0.274 pp+7.4%
May 20183.655%+0.329 pp+0.248 pp+0.433 pp+0.433 pp+13.7%
Apr 20183.326%-0.133 pp+0.104 pp+0.104 pp+0.104 pp+2.1%
Mar 20183.459%+0.052 pp+0.237 pp+0.237 pp+0.237 pp+6.7%
Feb 20183.406%+0.185 pp+0.185 pp+0.185 pp+0.185 pp+6.0%
Jan 20183.221%+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.