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 Banks3.93%-0.52 ppTransaction & Payment Processing Services1.37%-0.47 ppProperty & Casualty Insurance1.17%+0.32 ppInsurance Brokers0.82%+0.15 ppConsumer Finance0.58%-0.11 ppLife & Health Insurance0.61%+0.10 ppAsset Management & Custody Banks0.59%-0.09 ppFinancial Exchanges & Data1.15%-0.03 ppInvestment Banking & Brokerage1.41%+0.02 ppMulti-line Insurance0.24%+0.02 ppRegional Banks0.45%+0.02 ppReinsurance0.05%+0.01 ppMulti-Sector Holdings0.00%+0.00 pp
3 · Sub-industry
Inside Insurance Brokers
Insurance Brokers · weight
0.82%
Industry change · 12M
+0.15 pp
Insurance Brokers · contribution
+0.148 pp
Company participation
80%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 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 | $26.5bn | 0.096% | +0.009 pp | +0.096 pp | +4.5% | Yes |
| Arthur J. Gallagher & Co. → AJG | United States | $39.8bn | 0.143% | +0.002 pp | +0.031 pp | +12.4% | Yes |
| Marsh McLennan → MRSH | United States | $82.1bn | 0.296% | +0.003 pp | +0.015 pp | -3.5% | Yes |
| Aon plc → AON | United States | $62.1bn | 0.224% | +0.002 pp | +0.012 pp | +0.6% | Yes |
| Brown & Brown → BRO | United States | $16.1bn | 0.058% | -0.009 pp | -0.005 pp | -18.4% | 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.