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 Brokers99.90%+99.31 ppDiversified Banks0.00%-6.59 ppTransaction & Payment Processing Services0.00%-2.09 ppProperty & Casualty Insurance0.00%-1.22 ppInvestment Banking & Brokerage0.00%-1.17 ppFinancial Exchanges & Data0.00%-1.05 ppConsumer Finance0.00%-0.91 ppAsset Management & Custody Banks0.00%-0.85 ppLife & Health Insurance0.00%-0.82 ppRegional Banks0.00%-0.59 ppMulti-line Insurance0.00%-0.38 ppReinsurance0.00%-0.05 ppMulti-Sector Holdings0.00%-0.00 pp
3 · Sub-industry
Inside Insurance Brokers
Insurance Brokers · weight
99.90%
Industry change · 12M
+99.31 pp
Insurance Brokers · contribution
+99.311 pp
Company participation
33%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jul 2020 · 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 | $20581000.0bn | 99.904% | +99.822 pp | +99.815 pp | +21.1% | Yes |
| Marsh McLennan → MRSH | United States | $59.1bn | 0.000% | -0.274 pp | -0.266 pp | +20.2% | No |
| Aon plc → AON | United States | $47.5bn | 0.000% | -0.224 pp | -0.237 pp | +9.4% | 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.