Observatory · observe first

Follow the allocation change

Matched S&P 500 members → sector → industry → sub-industry → company. Each step uses the same percentage points.

Historical time machine

Historical observation

20182026

Universe›Information Technology›Electronic Equipment & Instruments›Electronic Equipment & Instruments

1 · Sector

Weight and 12M allocation change

Information Technology38.2%+3.54 pp Financials11.8%+0.88 pp Consumer Discretionary12.1%+0.80 pp Industrials9.7%-0.00 pp Communication Services2.4%-0.05 pp Utilities2.7%-0.15 pp Energy2.3%-0.17 pp Materials2.1%-0.43 pp Real Estate2.2%-0.45 pp Consumer Staples6.2%-0.90 pp Health Care10.4%-3.06 pp

2 · Industry

Inside Information Technology

Semiconductors14.71%+3.11 pp Technology Hardware, Storage & Peripherals7.97%-0.58 pp Systems Software8.28%+0.44 pp Communications Equipment1.10%+0.33 pp Semiconductor Materials & Equipment0.74%+0.25 pp IT Consulting & Other Services0.95%-0.23 pp Application Software3.55%+0.16 pp Electronic Components0.29%+0.11 pp Electronic Equipment & Instruments0.25%-0.04 pp Electronic Manufacturing Services0.18%+0.04 pp Technology Distributors0.04%-0.03 pp Internet Services & Infrastructure0.11%-0.02 pp

3 · Sub-industry

Inside Electronic Equipment & Instruments

Electronic Equipment & Instruments0.25%-0.042 pp

Concentrated

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

View all contributions →

Electronic Equipment & Instruments · weight

0.25%

Industry change · 12M

-0.04 pp

Electronic Equipment & Instruments · contribution

-0.042 pp

Company participation

50%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Sep 2025 · sorted by absolute contribution to 12-month change

Company	Country	Market cap	Universe weight	3M contribution	12M contribution	12M price return	Above 6M weight average
Roper Technologies → ROP	United States	$53.7bn	0.107%	-0.024 pp	-0.031 pp	-9.8%	No
Zebra Technologies → ZBRA	United States	$15.1bn	0.030%	-0.004 pp	-0.014 pp	-19.8%	No
Teledyne Technologies → TDY	United States	$27.5bn	0.055%	+0.003 pp	+0.007 pp	+33.9%	Yes
Keysight Technologies → KEYS	United States	$30.1bn	0.060%	-0.001 pp	-0.004 pp	+10.1%	Yes

Company contributions use weights among matched S&P 500 members and add through each level without rescaling. Companies without matched shares and prices are omitted. These observations do not establish official index weights or actual fund flows.