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Observatory · observe first

Semiconductors

Semiconductors is gaining market weight. Gained weight for 3 consecutive months.

Historical time machine
Historical observation
20182026
Reversing upwardConcentrated

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

Universe weight
13.54%
$6.28T
12-month change
+10.43 pp
6-month change
+1.36 pp
3-month change
+3.16 pp
Company participation
79%
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
Nvidia →+7.743 pp
All other companies+2.683 pp
Industry total+10.425 pp

The three largest same-direction contributors explain 99% 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

Jul 2020 – Jun 2025 · market weight (%)

0.56.81320212022202320242025

Relative performance

Industry return versus ACWI · no future data shown

11614417220212022202320242025

Is participation broad or concentrated?

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

Above their 3M universe-weight average93%
Above their 6M universe-weight average79%
Above their 12M universe-weight average50%
Top 5 share of current industry market cap91.5%

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+10.43 pp
Relative strength · 12M+3.7%
Price index return · 12M+20.6%
Earnings revisions · unavailable0.0
Allocation gained weight while relative performance rose. At least 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
Nvidia →
NVDA
SemiconductorsUnited States8.312%+7.743 pp+27.9%0.0
Broadcom →
AVGO
SemiconductorsUnited States2.796%+2.656 pp+73.6%0.0
Texas Instruments →
TXN
SemiconductorsUnited States0.407%+0.075 pp+9.9%0.0
Analog Devices →
ADI
SemiconductorsUnited States0.255%+0.042 pp+6.1%0.0
Qualcomm →
QCOM
SemiconductorsUnited States0.377%-0.040 pp-18.3%0.0
Intel →
INTC
SemiconductorsUnited States0.211%-0.036 pp-27.2%0.0
Micron Technology →
MU
SemiconductorsUnited States0.297%+0.024 pp-5.9%0.0
Microchip Technology →
MCHP
SemiconductorsUnited States0.082%-0.010 pp-20.9%0.0
NXP Semiconductors →
NXPI
SemiconductorsUnited States0.119%-0.010 pp-17.3%0.0
ON Semiconductor →
ON
SemiconductorsUnited States0.047%-0.008 pp-23.5%0.0
Skyworks Solutions →
SWKS
SemiconductorsUnited States0.024%-0.008 pp-27.6%0.0
First Solar →
FSLR
SemiconductorsUnited States0.038%-0.007 pp-26.6%0.0
Advanced Micro Devices →
AMD
SemiconductorsUnited States0.496%+0.005 pp-12.5%0.0
Monolithic Power Systems →
MPWR
SemiconductorsUnited States0.076%+0.001 pp-10.3%0.0
Underlying monthly industry observations
MonthWeight1M change3M change6M change12M changeRelative return · 12M
Jun 202513.537%+1.315 pp+3.161 pp+1.357 pp+10.425 pp+3.7%
May 202512.221%+1.561 pp+1.086 pp+0.672 pp+9.114 pp-6.6%
Apr 202510.660%+0.284 pp-0.424 pp-1.477 pp+6.472 pp-12.3%
Mar 202510.376%-0.760 pp-1.804 pp-1.219 pp+6.067 pp-16.4%
Feb 202511.136%+0.051 pp-0.413 pp+1.029 pp+6.876 pp-7.1%
Jan 202511.084%-1.096 pp-1.053 pp+8.247 pp+7.059 pp-2.8%
Dec 202412.180%+0.631 pp+0.585 pp+9.069 pp+8.173 pp+8.5%
Nov 202411.549%-0.588 pp+1.442 pp+8.442 pp+7.864 pp+11.1%
Oct 202412.137%+0.543 pp+9.300 pp+7.949 pp+8.699 pp+22.6%
Sep 202411.595%+1.487 pp+8.483 pp+7.286 pp+8.001 pp+11.7%
Aug 202410.107%+7.270 pp+7.000 pp+5.847 pp+6.512 pp+11.8%
Jul 20242.837%-0.274 pp-1.351 pp-1.188 pp+0.227 pp+13.8%
Jun 20243.111%+0.004 pp-1.197 pp-0.896 pp+0.492 pp+23.7%
May 20243.107%-1.081 pp-1.153 pp-0.578 pp+0.435 pp+22.4%
Apr 20244.188%-0.120 pp+0.163 pp+0.750 pp+0.867 pp+26.5%
Mar 20244.308%+0.048 pp+0.301 pp+0.715 pp+0.690 pp+19.6%
Feb 20244.260%+0.235 pp+0.575 pp+0.665 pp+0.942 pp+28.5%
Jan 20244.025%+0.018 pp+0.587 pp+1.415 pp+0.766 pp+25.9%
Dec 20234.007%+0.322 pp+0.414 pp+1.388 pp+0.984 pp+32.6%
Nov 20233.685%+0.247 pp+0.090 pp+1.013 pp+0.549 pp+14.5%
Oct 20233.438%-0.155 pp+0.828 pp+0.117 pp+0.579 pp+13.3%
Sep 20233.593%-0.002 pp+0.974 pp-0.025 pp+0.521 pp+14.2%
Aug 20233.595%+0.985 pp+0.923 pp+0.277 pp+0.332 pp+8.4%
Jul 20232.610%-0.009 pp-0.711 pp-0.649 pp-0.853 pp+6.1%
Jun 20232.619%-0.053 pp-0.999 pp-0.404 pp-0.813 pp+11.0%
May 20232.672%-0.649 pp-0.646 pp-0.464 pp-1.070 pp+1.1%
Apr 20233.321%-0.297 pp+0.062 pp+0.462 pp-0.071 pp-3.8%
Mar 20233.618%+0.301 pp+0.595 pp+0.546 pp-0.007 pp+0.1%
Feb 20233.317%+0.058 pp+0.182 pp+0.055 pp-0.479 pp-11.2%
Jan 20233.259%+0.236 pp+0.400 pp-0.204 pp-0.452 pp-11.4%
Dec 20223.023%-0.112 pp-0.049 pp-0.409 pp-0.875 pp-20.4%
Nov 20223.135%+0.276 pp-0.127 pp-0.607 pp-0.893 pp-18.0%
Oct 20222.859%-0.213 pp-0.604 pp-0.533 pp-0.548 pp-9.4%
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%
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.