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 Banks7.68%-0.76 ppTransaction & Payment Processing Services1.74%+0.22 ppFinancial Exchanges & Data1.01%+0.17 ppInvestment Banking & Brokerage1.49%-0.13 ppProperty & Casualty Insurance1.14%-0.08 ppAsset Management & Custody Banks1.14%-0.07 ppRegional Banks0.73%-0.05 ppMulti-line Insurance0.42%-0.04 ppConsumer Finance0.94%-0.02 ppInsurance Brokers0.53%+0.01 ppLife & Health Insurance0.86%+0.01 ppReinsurance0.06%+0.00 ppMulti-Sector Holdings0.00%-0.00 pp
3 · Sub-industry
Inside Insurance Brokers
Insurance Brokers · weight
0.53%
Industry change · 12M
+0.01 pp
Insurance Brokers · contribution
+0.012 pp
Company participation
33%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 2018 · 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 | $41.6bn | 0.252% | -0.005 pp | +0.009 pp | -1.4% | Yes |
| Arthur J. Gallagher & Co. → AJG | United States | $11.9bn | 0.072% | -0.004 pp | +0.002 pp | -3.3% | No |
| Aon plc → AON | United States | $33.5bn | 0.203% | -0.008 pp | +0.001 pp | -3.2% | 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.