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
1 · Sector
Weight and 12M allocation change
2 · Industry
Inside Financials
Insurance Brokers0.58%-99.32 ppDiversified Banks4.70%+4.69 ppTransaction & Payment Processing Services2.44%+2.43 ppInvestment Banking & Brokerage1.46%+1.46 ppFinancial Exchanges & Data1.10%+1.10 ppProperty & Casualty Insurance0.89%+0.89 ppConsumer Finance0.78%+0.78 ppAsset Management & Custody Banks0.72%+0.72 ppLife & Health Insurance0.53%+0.53 ppRegional Banks0.42%+0.42 ppMulti-line Insurance0.24%+0.24 ppReinsurance0.04%+0.04 ppMulti-Sector Holdings0.00%+0.00 pp
3 · Sub-industry
Inside Insurance Brokers
Insurance Brokers · weight
0.58%
Industry change · 12M
-99.32 pp
Insurance Brokers · contribution
-99.315 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 2021 · sorted by absolute contribution to 12-month change
| Company | Country | Market cap | Universe weight | 3M contribution | 12M contribution | 12M price return | Above 6M weight average |
|---|---|---|---|---|---|---|---|
| Arthur J. Gallagher & Co. → AJG | United States | $29.7bn | 0.099% | -0.004 pp | -99.797 pp | +38.5% | Yes |
| Marsh McLennan → MRSH | United States | $79.6bn | 0.266% | +0.014 pp | +0.266 pp | +39.0% | Yes |
| Aon plc → AON | United States | $64.8bn | 0.217% | +0.012 pp | +0.216 pp | +44.7% | 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.