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
0.21%
Industry change · 12M
+0.21 pp
Electronic Equipment & Instruments · contribution
+0.212 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Roper Technologies →
ROP
United States$39.6bn0.079%-0.111 pp+0.079 pp+8.0%No
Zebra Technologies →
ZBRA
United States$26.7bn0.053%-0.032 pp+0.053 pp+136.7%No
Keysight Technologies →
KEYS
United States$26.3bn0.053%-0.043 pp+0.053 pp+49.3%No
Teledyne Technologies →
TDY
United States$13.7bn0.027%-0.032 pp+0.027 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.