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›Industrials›Human Resource & Employment Services›Human Resource & Employment Services
Human Resource & Employment Services · weight
0.42%
Industry change · 12M
-0.08 pp
Human Resource & Employment Services · contribution
-0.076 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Automatic Data Processing →
ADP
United States$79.6bn0.288%+0.119 pp-0.066 pp+30.4%Yes
Paychex →
PAYX
United States$35.1bn0.127%+0.052 pp-0.010 pp+47.1%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.