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 Banks4.77%+2.17 ppInvestment Banking & Brokerage1.47%+0.78 ppFinancial Exchanges & Data1.10%+0.51 ppInsurance Brokers0.74%+0.44 ppTransaction & Payment Processing Services1.93%+0.41 ppProperty & Casualty Insurance0.92%+0.40 ppConsumer Finance0.76%+0.37 ppAsset Management & Custody Banks0.68%+0.30 ppLife & Health Insurance0.57%+0.26 ppRegional Banks0.47%+0.24 ppMulti-line Insurance0.24%+0.12 ppReinsurance0.04%+0.02 ppMulti-Sector Holdings0.00%+0.00 pp
3 · Sub-industry
Inside Insurance Brokers
Insurance Brokers · weight
0.74%
Industry change · 12M
+0.44 pp
Insurance Brokers · contribution
+0.439 pp
Company participation
60%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 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 | $77.6bn | 0.261% | -0.020 pp | +0.127 pp | +41.8% | No |
| Willis Towers Watson → WTW | United States | $29.2bn | 0.098% | +0.098 pp | +0.098 pp | +16.8% | Yes |
| Aon plc → AON | United States | $60.9bn | 0.205% | -0.031 pp | +0.094 pp | +37.1% | No |
| Brown & Brown → BRO | United States | $18.7bn | 0.063% | +0.003 pp | +0.063 pp | +54.9% | Yes |
| Arthur J. Gallagher & Co. → AJG | United States | $32.7bn | 0.110% | -0.006 pp | +0.057 pp | +38.7% | 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.