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Observatory · observe first

Electronic Components

Electronic Components is gaining market weight. Gained weight for 4 consecutive months.

Historical time machine
Historical observation
20182026
AcceleratingConcentrated

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

Universe weight
0.70%
$0.41T
12-month change
+0.48 pp
6-month change
+0.40 pp
3-month change
+0.36 pp
Company participation
100%
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
All other companies+0.194 pp
Industry total+0.479 pp

The three largest same-direction contributors explain 100% 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 2021 – Jun 2026 · market weight (%)

0.10.40.720222023202420252026

Relative performance

Industry return versus ACWI · no future data shown

10022034120222023202420252026

Is participation broad or concentrated?

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

Above their 3M universe-weight average100%
Above their 6M universe-weight average100%
Above their 12M universe-weight average67%
Top 5 share of current industry market cap100.0%

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+0.48 pp
Relative strength · 12M+150.9%
Price index return · 12M+211.0%
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
Corning Inc. →
GLW
Electronic ComponentsUnited States0.382%+0.285 pp+391.0%0.0
Coherent Corp. →
COHR
Electronic ComponentsUnited States0.134%+0.134 pp+342.2%0.0
Amphenol →
APH
Electronic ComponentsUnited States0.188%+0.060 pp+79.8%0.0
Underlying monthly industry observations
MonthWeight1M change3M change6M change12M changeRelative return · 12M
Jun 20260.705%+0.153 pp+0.357 pp+0.396 pp+0.479 pp+150.9%
May 20260.551%+0.156 pp+0.251 pp+0.240 pp+0.332 pp+102.6%
Apr 20260.395%+0.047 pp+0.057 pp+0.079 pp+0.192 pp+113.1%
Mar 20260.348%+0.048 pp+0.039 pp+0.056 pp+0.161 pp+104.1%
Feb 20260.300%-0.038 pp-0.011 pp+0.044 pp+0.114 pp+112.4%
Jan 20260.338%+0.029 pp+0.021 pp+0.087 pp+0.144 pp+66.6%
Dec 20250.309%-0.002 pp+0.017 pp+0.083 pp+0.122 pp+56.8%
Nov 20250.311%-0.005 pp+0.054 pp+0.092 pp+0.123 pp+57.6%
Oct 20250.317%+0.025 pp+0.065 pp+0.114 pp+0.126 pp+63.1%
Sep 20250.292%+0.035 pp+0.066 pp+0.105 pp+0.111 pp+60.4%
Aug 20250.257%+0.005 pp+0.037 pp+0.071 pp+0.072 pp+40.8%
Jul 20250.251%+0.025 pp+0.048 pp+0.057 pp+0.121 pp+42.4%
Jun 20250.226%+0.006 pp+0.039 pp+0.039 pp+0.126 pp+25.4%
May 20250.219%+0.016 pp+0.033 pp+0.031 pp+0.120 pp+22.9%
Apr 20250.203%+0.016 pp+0.009 pp+0.012 pp+0.068 pp+20.5%
Mar 20250.187%+0.001 pp+0.000 pp+0.006 pp+0.061 pp+20.2%
Feb 20250.186%-0.008 pp-0.002 pp+0.002 pp+0.060 pp+22.3%
Jan 20250.194%+0.007 pp+0.003 pp+0.063 pp+0.067 pp+25.7%
Dec 20240.187%-0.001 pp+0.006 pp+0.087 pp+0.066 pp+28.5%
Nov 20240.189%-0.002 pp+0.004 pp+0.090 pp+0.070 pp+32.9%
Oct 20240.191%+0.009 pp+0.060 pp+0.056 pp+0.072 pp+31.5%
Sep 20240.181%-0.003 pp+0.081 pp+0.055 pp+0.053 pp+14.8%
Aug 20240.185%+0.054 pp+0.086 pp+0.059 pp+0.053 pp+12.4%
Jul 20240.131%+0.030 pp-0.004 pp+0.003 pp+0.039 pp+11.0%
Jun 20240.100%+0.001 pp-0.026 pp-0.021 pp+0.002 pp+7.6%
May 20240.099%-0.036 pp-0.027 pp-0.019 pp+0.007 pp+13.9%
Apr 20240.135%+0.009 pp+0.008 pp+0.016 pp+0.002 pp+3.1%
Mar 20240.126%+0.000 pp+0.004 pp-0.003 pp-0.017 pp-10.6%
Feb 20240.126%-0.002 pp+0.008 pp-0.005 pp-0.016 pp-9.9%
Jan 20240.127%+0.006 pp+0.009 pp+0.036 pp-0.013 pp-6.9%
Dec 20230.122%+0.003 pp-0.007 pp+0.024 pp-0.017 pp-11.3%
Nov 20230.118%-0.000 pp-0.013 pp+0.026 pp-0.020 pp-14.9%
Oct 20230.119%-0.010 pp+0.027 pp-0.015 pp-0.018 pp-16.6%
Sep 20230.129%-0.003 pp+0.030 pp-0.015 pp-0.007 pp-5.7%
Aug 20230.131%+0.039 pp+0.039 pp-0.010 pp-0.012 pp-8.1%
Jul 20230.092%-0.006 pp-0.042 pp-0.049 pp-0.054 pp-10.4%
Jun 20230.098%+0.006 pp-0.045 pp-0.040 pp-0.043 pp+2.9%
May 20230.092%-0.041 pp-0.049 pp-0.046 pp-0.055 pp-7.3%
Apr 20230.133%-0.010 pp-0.007 pp-0.003 pp-0.013 pp-2.7%
Mar 20230.143%+0.002 pp+0.005 pp+0.008 pp+0.000 pp+9.4%
Feb 20230.142%+0.001 pp+0.003 pp-0.001 pp-0.016 pp-0.9%
Jan 20230.141%+0.002 pp+0.004 pp-0.005 pp-0.020 pp-3.1%
Dec 20220.138%-0.000 pp+0.003 pp-0.003 pp-0.005 pp+8.3%
Nov 20220.139%+0.002 pp-0.004 pp-0.008 pp-0.009 pp+8.7%
Oct 20220.137%+0.001 pp-0.010 pp-0.009 pp-0.003 pp+18.5%
Sep 20220.136%-0.007 pp-0.005 pp-0.008 pp-0.012 pp+6.6%
Aug 20220.143%-0.003 pp-0.004 pp-0.015 pp-0.010 pp+7.8%
Jul 20220.146%+0.005 pp+0.000 pp-0.014 pp-0.014 pp+5.1%
Jun 20220.141%-0.006 pp-0.002 pp-0.003 pp-0.018 pp-2.1%
May 20220.147%+0.001 pp-0.011 pp-0.001 pp-0.022 pp-4.5%
Apr 20220.146%+0.003 pp-0.015 pp+0.006 pp-0.027 pp-7.6%
Mar 20220.143%-0.015 pp-0.001 pp-0.005 pp+0.068 pp-13.0%
Feb 20220.158%-0.003 pp+0.010 pp+0.005 pp+0.090 pp+4.0%
Jan 20220.161%+0.017 pp+0.021 pp+0.001 pp+0.084 pp+8.7%
Dec 20210.144%-0.004 pp-0.004 pp-0.015 pp+0.013 pp-3.3%
Nov 20210.148%+0.008 pp-0.005 pp-0.021 pp+0.005 pp-9.5%
Oct 20210.140%-0.008 pp-0.020 pp-0.033 pp+0.004 pp-11.5%
Sep 20210.148%-0.005 pp-0.011 pp+0.073 pp+0.148 pp-4.5%
Aug 20210.153%-0.007 pp-0.017 pp+0.084 pp+0.152 pp+1.7%
Jul 20210.160%+0.001 pp-0.013 pp+0.083 pp+0.160 pp+4.8%
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.