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 Banks7.90%-0.54 ppTransaction & Payment Processing Services1.68%+0.15 ppInvestment Banking & Brokerage1.50%-0.12 ppFinancial Exchanges & Data0.96%+0.12 ppAsset Management & Custody Banks1.11%-0.11 ppConsumer Finance0.89%-0.07 ppProperty & Casualty Insurance1.16%-0.06 ppRegional Banks0.73%-0.06 ppMulti-line Insurance0.42%-0.04 ppLife & Health Insurance0.88%+0.04 ppInsurance Brokers0.52%+0.01 ppReinsurance0.05%-0.00 ppMulti-Sector Holdings0.00%-0.00 pp
3 · Sub-industry
Inside Insurance Brokers
Insurance Brokers · weight
0.52%
Industry change · 12M
+0.01 pp
Insurance Brokers · contribution
+0.008 pp
Company participation
33%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jul 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 |
|---|---|---|---|---|---|---|---|
| Arthur J. Gallagher & Co. → AJG | United States | $13.0bn | 0.076% | -0.002 pp | +0.006 pp | +5.7% | Yes |
| Marsh McLennan → MRSH | United States | $42.1bn | 0.246% | -0.009 pp | +0.002 pp | +0.8% | No |
| Aon plc → AON | United States | $34.8bn | 0.203% | -0.012 pp | +0.001 pp | +1.5% | 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.