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
Electronic Equipment & Instruments · weight
0.44%
Industry change · 12M
+0.44 pp
Electronic Equipment & Instruments · contribution
+0.438 pp
Company participation
50%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Sep 2021 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Roper Technologies →
ROP
United States$47.0bn0.165%-0.010 pp+0.165 pp+13.5%No
Keysight Technologies →
KEYS
United States$30.3bn0.106%+0.006 pp+0.106 pp+66.3%Yes
Zebra Technologies →
ZBRA
United States$27.5bn0.097%-0.003 pp+0.097 pp+104.2%No
Teledyne Technologies →
TDY
United States$20.0bn0.070%+0.015 pp+0.070 pp+38.5%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.