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 Banks6.45%-1.24 ppInvestment Banking & Brokerage1.13%-0.35 ppTransaction & Payment Processing Services2.07%+0.33 ppAsset Management & Custody Banks0.83%-0.31 ppRegional Banks0.58%-0.15 ppInsurance Brokers0.61%+0.08 ppProperty & Casualty Insurance1.21%+0.07 ppMulti-line Insurance0.37%-0.04 ppLife & Health Insurance0.84%-0.02 ppConsumer Finance0.91%-0.02 ppFinancial Exchanges & Data1.02%+0.01 ppReinsurance0.05%-0.00 ppMulti-Sector Holdings0.00%+0.00 pp
3 · Sub-industry
Inside Insurance Brokers
Insurance Brokers · weight
0.61%
Industry change · 12M
+0.08 pp
Insurance Brokers · contribution
+0.082 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 2019 · 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 |
|---|---|---|---|---|---|---|---|
| Aon plc → AON | United States | $46.4bn | 0.250% | +0.015 pp | +0.047 pp | +42.6% | Yes |
| Marsh McLennan → MRSH | United States | $50.6bn | 0.273% | +0.000 pp | +0.020 pp | +24.1% | Yes |
| Arthur J. Gallagher & Co. → AJG | United States | $16.2bn | 0.087% | +0.005 pp | +0.015 pp | +37.1% | 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.