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 Banks4.16%-4.28 ppInvestment Banking & Brokerage0.72%-0.90 ppAsset Management & Custody Banks0.56%-0.66 ppProperty & Casualty Insurance0.65%-0.57 ppTransaction & Payment Processing Services1.03%-0.49 ppConsumer Finance0.52%-0.43 ppRegional Banks0.37%-0.42 ppLife & Health Insurance0.47%-0.38 ppFinancial Exchanges & Data0.54%-0.30 ppMulti-line Insurance0.20%-0.26 ppInsurance Brokers0.33%-0.19 ppReinsurance0.03%-0.02 ppMulti-Sector Holdings0.00%-0.00 pp
3 · Sub-industry
Inside Insurance Brokers
Insurance Brokers · weight
0.33%
Industry change · 12M
-0.19 pp
Insurance Brokers · contribution
-0.189 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Nov 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 |
|---|---|---|---|---|---|---|---|
| Marsh McLennan → MRSH | United States | $44.7bn | 0.148% | +0.010 pp | -0.095 pp | +7.8% | No |
| Aon plc → AON | United States | $39.8bn | 0.132% | +0.018 pp | -0.071 pp | +17.4% | No |
| Arthur J. Gallagher & Co. → AJG | United States | $14.2bn | 0.047% | +0.005 pp | -0.023 pp | +14.8% | 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.