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
Transaction & Payment Processing Services1.81%-0.96 ppDiversified Banks4.71%+0.39 ppInvestment Banking & Brokerage1.41%+0.30 ppInsurance Brokers0.68%+0.14 ppProperty & Casualty Insurance0.83%-0.08 ppFinancial Exchanges & Data1.15%+0.07 ppRegional Banks0.45%+0.07 ppAsset Management & Custody Banks0.69%+0.05 ppConsumer Finance0.68%+0.04 ppLife & Health Insurance0.51%-0.02 ppReinsurance0.03%-0.00 ppMulti-line Insurance0.22%+0.00 ppMulti-Sector Holdings0.00%-0.00 pp
3 · Sub-industry
Inside Insurance Brokers
Insurance Brokers · weight
0.68%
Industry change · 12M
+0.14 pp
Insurance Brokers · contribution
+0.135 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Nov 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 |
|---|---|---|---|---|---|---|---|
| Brown & Brown → BRO | United States | $18.2bn | 0.061% | +0.061 pp | +0.061 pp | +44.1% | Yes |
| Marsh McLennan → MRSH | United States | $82.8bn | 0.280% | +0.013 pp | +0.033 pp | +45.3% | Yes |
| Aon plc → AON | United States | $65.2bn | 0.220% | +0.004 pp | +0.021 pp | +45.5% | Yes |
| Arthur J. Gallagher & Co. → AJG | United States | $33.8bn | 0.114% | +0.015 pp | +0.020 pp | +43.2% | 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.