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
Insurance Brokers0.66%-99.24 ppDiversified Banks5.02%+5.01 ppTransaction & Payment Processing Services2.39%+2.38 ppInvestment Banking & Brokerage1.44%+1.44 ppFinancial Exchanges & Data1.10%+1.10 ppProperty & Casualty Insurance0.89%+0.89 ppConsumer Finance0.82%+0.82 ppAsset Management & Custody Banks0.69%+0.69 ppLife & Health Insurance0.54%+0.54 ppRegional Banks0.46%+0.46 ppMulti-line Insurance0.25%+0.25 ppReinsurance0.04%+0.04 ppMulti-Sector Holdings0.00%+0.00 pp
3 · Sub-industry
Inside Insurance Brokers
Insurance Brokers · weight
0.66%
Industry change · 12M
-99.24 pp
Insurance Brokers · contribution
-99.242 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 2021 · 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 | $30.7bn | 0.108% | +0.011 pp | -99.792 pp | +42.8% | Yes |
| Marsh McLennan → MRSH | United States | $76.7bn | 0.269% | +0.017 pp | +0.269 pp | +34.1% | Yes |
| Aon plc → AON | United States | $64.5bn | 0.226% | +0.036 pp | +0.226 pp | +39.7% | Yes |
| Brown & Brown → BRO | United States | $15.6bn | 0.055% | +0.055 pp | +0.055 pp | +23.4% | 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.