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
Transaction & Payment Processing Services1.52%-0.91 ppDiversified Banks3.79%-0.91 ppInsurance Brokers0.78%+0.20 ppConsumer Finance0.61%-0.17 ppAsset Management & Custody Banks0.55%-0.16 ppInvestment Banking & Brokerage1.34%-0.12 ppProperty & Casualty Insurance0.96%+0.07 ppRegional Banks0.46%+0.04 ppMulti-line Insurance0.22%-0.02 ppLife & Health Insurance0.55%+0.01 ppReinsurance0.04%+0.00 ppFinancial Exchanges & Data1.10%-0.00 ppMulti-Sector Holdings0.00%+0.00 pp
3 · Sub-industry
Inside Insurance Brokers
Insurance Brokers · weight
0.78%
Industry change · 12M
+0.20 pp
Insurance Brokers · contribution
+0.199 pp
Company participation
20%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 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 | $22.7bn | 0.081% | -0.003 pp | +0.081 pp | -4.9% | No |
| Brown & Brown → BRO | United States | $17.8bn | 0.064% | +0.003 pp | +0.064 pp | +9.3% | No |
| Arthur J. Gallagher & Co. → AJG | United States | $38.2bn | 0.137% | +0.014 pp | +0.037 pp | +28.0% | Yes |
| Marsh McLennan → MRSH | United States | $80.5bn | 0.288% | -0.001 pp | +0.022 pp | +4.1% | No |
| Aon plc → AON | United States | $58.9bn | 0.211% | -0.000 pp | -0.006 pp | -2.0% | 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.