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 Banks4.26%-1.02 ppTransaction & Payment Processing Services1.59%-0.98 ppInsurance Brokers0.77%+0.21 ppAsset Management & Custody Banks0.61%-0.13 ppProperty & Casualty Insurance1.07%+0.12 ppConsumer Finance0.71%-0.11 ppInvestment Banking & Brokerage1.35%-0.10 ppFinancial Exchanges & Data1.11%+0.09 ppRegional Banks0.50%+0.03 ppLife & Health Insurance0.58%-0.01 ppMulti-line Insurance0.26%+0.01 ppReinsurance0.04%+0.00 ppMulti-Sector Holdings0.00%+0.00 pp
3 · Sub-industry
Inside Insurance Brokers
Insurance Brokers · weight
0.77%
Industry change · 12M
+0.21 pp
Insurance Brokers · contribution
+0.208 pp
Company participation
60%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 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 |
|---|---|---|---|---|---|---|---|
| Willis Towers Watson → WTW | United States | $23.5bn | 0.085% | -0.006 pp | +0.085 pp | -18.4% | Yes |
| Brown & Brown → BRO | United States | $16.8bn | 0.060% | -0.006 pp | +0.060 pp | +13.8% | No |
| Marsh McLennan → MRSH | United States | $80.3bn | 0.289% | +0.018 pp | +0.037 pp | +17.2% | Yes |
| Arthur J. Gallagher & Co. → AJG | United States | $34.0bn | 0.123% | +0.008 pp | +0.020 pp | +11.9% | Yes |
| Aon plc → AON | United States | $58.5bn | 0.211% | -0.006 pp | +0.006 pp | +9.6% | 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.