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
Latest available · not live
20182026
Universe›Industrials›Human Resource & Employment Services›Human Resource & Employment Services

1 · Sector

Weight and 12M allocation change

Information Technology43.1%+4.93 ppEnergy3.8%+1.55 ppHealth Care10.6%+0.26 ppMaterials1.9%-0.22 ppCommunication Services2.1%-0.27 ppReal Estate1.8%-0.35 ppIndustrials9.1%-0.58 ppUtilities2.1%-0.61 ppConsumer Staples5.4%-0.78 ppConsumer Discretionary10.3%-1.78 ppFinancials9.7%-2.16 pp

2 · Industry

Inside Industrials

Aerospace & Defense2.18%-0.41 ppElectrical Components & Equipment0.89%+0.29 ppIndustrial Conglomerates0.28%-0.23 ppConstruction Machinery & Heavy Transportation Equipment0.92%+0.19 ppPassenger Ground Transportation0.24%-0.17 ppConstruction & Engineering0.34%+0.12 ppIndustrial Machinery & Supplies & Components0.79%-0.12 ppEnvironmental & Facilities Services0.31%-0.12 ppDiversified Support Services0.20%-0.10 ppHuman Resource & Employment Services0.23%-0.10 ppHeavy Electrical Equipment0.45%+0.09 ppBuilding Products0.47%-0.07 ppResearch & Consulting Services0.06%-0.07 ppAgricultural & Farm Machinery0.30%+0.06 ppCargo Ground Transportation0.12%+0.04 ppTrading Companies & Distributors0.27%+0.04 ppData Processing & Outsourced Services0.03%-0.02 ppAir Freight & Logistics0.29%+0.02 ppPassenger Airlines0.19%+0.02 ppRail Transportation0.53%-0.02 pp

3 · Sub-industry

Inside Human Resource & Employment Services

Human Resource & Employment Services0.23%-0.098 pp
Concentrated

Most of this industry's losses came from a few companies.

View all contributions →
Human Resource & Employment Services · weight
0.23%
Industry change · 12M
-0.10 pp
Human Resource & Employment Services · contribution
-0.098 pp
Company participation
50%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Sep 2026 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Automatic Data Processing →
ADP
United States$102.5bn0.172%+0.017 pp-0.066 pp-9.5%Yes
Paychex →
PAYX
United States$35.1bn0.059%-0.002 pp-0.032 pp-18.9%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.