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
Asset Management & Custody Banks1.53%+0.78 ppInvestment Banking & Brokerage1.31%+0.22 ppDiversified Banks3.82%+0.14 ppTransaction & Payment Processing Services1.22%-0.07 ppLife & Health Insurance0.43%-0.05 ppFinancial Exchanges & Data1.11%-0.05 ppConsumer Finance0.70%+0.04 ppMulti-line Insurance0.17%-0.04 ppInsurance Brokers0.80%+0.04 ppReinsurance0.03%-0.01 ppProperty & Casualty Insurance1.13%-0.01 ppRegional Banks0.32%+0.01 ppMulti-Sector Holdings0.00%-0.00 pp
3 · Sub-industry
Inside Insurance Brokers
Insurance Brokers · weight
0.80%
Industry change · 12M
+0.04 pp
Insurance Brokers · contribution
+0.038 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 2025 · 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 | $86.0bn | 0.192% | +0.041 pp | +0.041 pp | +39.3% | Yes |
| Marsh McLennan → MRSH | United States | $116.8bn | 0.261% | +0.008 pp | -0.024 pp | +19.3% | Yes |
| Aon plc → AON | United States | $88.4bn | 0.198% | +0.011 pp | +0.018 pp | +30.5% | Yes |
| Brown & Brown → BRO | United States | $33.9bn | 0.076% | +0.004 pp | +0.007 pp | +41.6% | Yes |
| Willis Towers Watson → WTW | United States | $33.9bn | 0.076% | +0.004 pp | -0.004 pp | +26.1% | 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.