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
Asset Management & Custody Banks1.51%+0.56 ppInvestment Banking & Brokerage1.40%+0.35 ppDiversified Banks3.86%+0.28 ppConsumer Finance0.84%+0.21 ppTransaction & Payment Processing Services0.98%-0.16 ppProperty & Casualty Insurance1.02%-0.15 ppFinancial Exchanges & Data1.05%-0.09 ppInsurance Brokers0.67%-0.08 ppLife & Health Insurance0.37%-0.08 ppMulti-line Insurance0.16%-0.03 ppReinsurance0.03%-0.01 ppRegional Banks0.32%-0.01 ppMulti-Sector Holdings0.00%-0.00 pp
3 · Sub-industry
Inside Insurance Brokers
Insurance Brokers · weight
0.67%
Industry change · 12M
-0.08 pp
Insurance Brokers · contribution
-0.083 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 2025 · 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 | $101.2bn | 0.210% | -0.051 pp | -0.061 pp | -8.2% | No |
| Aon plc → AON | United States | $79.1bn | 0.164% | -0.018 pp | -0.016 pp | +7.6% | No |
| Brown & Brown → BRO | United States | $32.0bn | 0.066% | -0.007 pp | -0.006 pp | -7.2% | No |
| Arthur J. Gallagher & Co. → AJG | United States | $77.6bn | 0.161% | -0.041 pp | +0.006 pp | +4.3% | No |
| Willis Towers Watson → WTW | United States | $31.9bn | 0.066% | -0.005 pp | -0.006 pp | +13.2% | 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.