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
Diversified Banks2.53%-1.29 ppTransaction & Payment Processing Services0.51%-0.71 ppAsset Management & Custody Banks0.87%-0.66 ppFinancial Exchanges & Data0.62%-0.49 ppProperty & Casualty Insurance0.70%-0.44 ppInsurance Brokers0.38%-0.43 ppInvestment Banking & Brokerage0.99%-0.32 ppConsumer Finance0.49%-0.21 ppLife & Health Insurance0.24%-0.19 ppRegional Banks0.25%-0.07 ppMulti-line Insurance0.11%-0.07 ppReinsurance0.02%-0.02 ppMulti-Sector Holdings0.00%-0.00 pp
3 · Sub-industry
Inside Insurance Brokers
Insurance Brokers · weight
0.38%
Industry change · 12M
-0.43 pp
Insurance Brokers · contribution
-0.426 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 2026 · 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 |
|---|---|---|---|---|---|---|---|
| Marsh McLennan → MRSH | United States | $90.4bn | 0.124% | -0.052 pp | -0.137 pp | -20.1% | No |
| Arthur J. Gallagher & Co. → AJG | United States | $58.7bn | 0.081% | -0.044 pp | -0.112 pp | -31.8% | No |
| Aon plc → AON | United States | $71.9bn | 0.099% | -0.051 pp | -0.099 pp | -17.7% | No |
| Brown & Brown → BRO | United States | $24.4bn | 0.034% | -0.020 pp | -0.042 pp | -39.0% | No |
| Willis Towers Watson → WTW | United States | $28.9bn | 0.040% | -0.021 pp | -0.036 pp | -9.1% | 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.