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›Financials›Insurance Brokers›Insurance Brokers
Insurance Brokers · weight
0.54%
Industry change · 12M
-0.05 pp
Insurance Brokers · contribution
-0.055 pp
Company participation
67%
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
Aon plc →
AON
United States$42.1bn0.199%+0.199 pp-0.037 pp-3.9%Yes
Marsh McLennan →
MRSH
United States$52.5bn0.248%+0.248 pp-0.024 pp+1.6%Yes
Arthur J. Gallagher & Co. →
AJG
United States$19.9bn0.094%-99.810 pp+0.006 pp+15.7%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.