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
0.40%
Industry change · 12M
+0.12 pp
Electronic Equipment & Instruments · contribution
+0.121 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Oct 2020 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Zebra Technologies →
ZBRA
United States$15.1bn0.072%+0.072 pp+0.072 pp+19.2%Yes
Teledyne Technologies →
TDY
United States$11.4bn0.054%+0.054 pp+0.054 pp-6.2%Yes
Keysight Technologies →
KEYS
United States$19.6bn0.093%+0.093 pp-0.006 pp+3.9%Yes
Roper Technologies →
ROP
United States$38.9bn0.184%+0.184 pp+0.001 pp+10.8%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.