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
0.59%
Industry change · 12M
+0.07 pp
Insurance Brokers · contribution
+0.069 pp
Company participation
33%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jul 2019 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Aon plc →
AON
United States$44.6bn0.238%-0.004 pp+0.034 pp+33.5%No
Marsh McLennan →
MRSH
United States$50.1bn0.267%+0.000 pp+0.021 pp+20.8%No
Arthur J. Gallagher & Co. →
AJG
United States$16.8bn0.090%+0.003 pp+0.014 pp+29.5%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.