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 Banks4.67%+2.15 ppInvestment Banking & Brokerage1.42%+0.74 ppFinancial Exchanges & Data1.08%+0.57 ppInsurance Brokers0.76%+0.49 ppProperty & Casualty Insurance0.95%+0.49 ppConsumer Finance0.81%+0.44 ppAsset Management & Custody Banks0.65%+0.32 ppLife & Health Insurance0.58%+0.29 ppRegional Banks0.51%+0.27 ppTransaction & Payment Processing Services1.62%+0.22 ppMulti-line Insurance0.26%+0.14 ppReinsurance0.04%+0.02 ppMulti-Sector Holdings0.00%+0.00 pp
3 · Sub-industry
Inside Insurance Brokers
Insurance Brokers · weight
0.76%
Industry change · 12M
+0.49 pp
Insurance Brokers · contribution
+0.493 pp
Company participation
60%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 2022 · 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 | $78.1bn | 0.271% | -0.009 pp | +0.154 pp | +36.8% | No |
| Aon plc → AON | United States | $62.5bn | 0.217% | -0.003 pp | +0.114 pp | +29.3% | No |
| Willis Towers Watson → WTW | United States | $26.2bn | 0.091% | +0.091 pp | +0.091 pp | +2.0% | Yes |
| Arthur J. Gallagher & Co. → AJG | United States | $33.0bn | 0.114% | +0.000 pp | +0.068 pp | +33.8% | Yes |
| Brown & Brown → BRO | United States | $19.1bn | 0.066% | +0.005 pp | +0.066 pp | +48.3% | 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.