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
0.41%
Industry change · 12M
+0.41 pp
Electronic Equipment & Instruments · contribution
+0.414 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Roper Technologies →
ROP
United States$47.4bn0.170%+0.090 pp+0.169 pp+14.9%Yes
Zebra Technologies →
ZBRA
United States$26.6bn0.095%+0.042 pp+0.095 pp+90.2%Yes
Keysight Technologies →
KEYS
United States$26.2bn0.094%+0.041 pp+0.094 pp+31.7%Yes
Teledyne Technologies →
TDY
United States$15.5bn0.056%+0.028 pp+0.056 pp+12.1%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.