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

Materials29.2%+26.88 pp Energy2.3%-0.54 pp Communication Services2.2%-0.64 pp Utilities2.1%-0.78 pp Real Estate1.6%-0.97 pp Industrials7.6%-2.18 pp Consumer Staples4.9%-2.47 pp Consumer Discretionary8.4%-3.06 pp Financials7.9%-4.65 pp Health Care8.0%-4.97 pp Information Technology25.9%-6.63 pp

2 · Industry

Inside Information Technology

Systems Software4.49%-2.69 pp Technology Hardware, Storage & Peripherals5.94%-2.26 pp Application Software1.63%-1.54 pp IT Consulting & Other Services0.57%-0.61 pp Semiconductor Materials & Equipment0.91%+0.36 pp Semiconductors10.63%+0.25 pp Electronic Components0.35%+0.16 pp Electronic Equipment & Instruments0.18%-0.12 pp Internet Services & Infrastructure0.07%-0.07 pp Communications Equipment0.95%-0.07 pp Technology Distributors0.02%-0.03 pp Electronic Manufacturing Services0.13%-0.01 pp

3 · Sub-industry

Inside Electronic Equipment & Instruments

Electronic Equipment & Instruments0.18%-0.122 pp

Concentrated

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

View all contributions →

Electronic Equipment & Instruments · weight

0.18%

Industry change · 12M

-0.12 pp

Electronic Equipment & Instruments · contribution

-0.122 pp

Company participation

25%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Mar 2026 · 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	$36.4bn	0.053%	-0.041 pp	-0.097 pp	-39.6%	No
Zebra Technologies → ZBRA	United States	$10.3bn	0.015%	-0.009 pp	-0.019 pp	-26.0%	No
Teledyne Technologies → TDY	United States	$28.0bn	0.041%	-0.006 pp	-0.015 pp	+21.6%	No
Keysight Technologies → KEYS	United States	$48.4bn	0.071%	+0.002 pp	+0.009 pp	+88.5%	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.