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 Technology37.8%+2.39 pp Industrials9.6%+0.25 pp Materials2.2%+0.06 pp Utilities2.6%-0.01 pp Financials11.9%-0.11 pp Energy2.3%-0.17 pp Real Estate2.1%-0.28 pp Communication Services2.2%-0.31 pp Health Care11.3%-0.33 pp Consumer Staples6.0%-0.70 pp Consumer Discretionary12.0%-0.78 pp

2 · Industry

Inside Information Technology

Semiconductors15.05%+2.87 pp Application Software2.98%-0.53 pp Technology Hardware, Storage & Peripherals8.35%-0.51 pp Semiconductor Materials & Equipment0.94%+0.37 pp Communications Equipment1.07%+0.25 pp IT Consulting & Other Services0.99%-0.15 pp Electronic Components0.31%+0.12 pp Electronic Equipment & Instruments0.23%-0.05 pp Electronic Manufacturing Services0.18%+0.05 pp Internet Services & Infrastructure0.10%-0.04 pp Technology Distributors0.03%-0.02 pp Systems Software7.56%+0.02 pp

3 · Sub-industry

Inside Electronic Equipment & Instruments

Electronic Equipment & Instruments0.23%-0.050 pp

Concentrated

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

View all contributions →

Electronic Equipment & Instruments · weight

0.23%

Industry change · 12M

-0.05 pp

Electronic Equipment & Instruments · contribution

-0.050 pp

Company participation

25%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Dec 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	$47.9bn	0.094%	-0.014 pp	-0.033 pp	-13.8%	No
Zebra Technologies → ZBRA	United States	$12.3bn	0.024%	-0.006 pp	-0.021 pp	-37.1%	No
Keysight Technologies → KEYS	United States	$34.9bn	0.068%	+0.008 pp	+0.005 pp	+26.5%	Yes
Teledyne Technologies → TDY	United States	$24.0bn	0.047%	-0.008 pp	-0.002 pp	+10.0%	No

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.