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 Banks3.68%-0.44 ppInvestment Banking & Brokerage1.08%-0.34 ppRegional Banks0.32%-0.15 ppAsset Management & Custody Banks0.75%+0.13 ppLife & Health Insurance0.48%-0.11 ppTransaction & Payment Processing Services1.29%-0.11 ppInsurance Brokers0.77%-0.02 ppFinancial Exchanges & Data1.16%+0.02 ppMulti-line Insurance0.22%-0.02 ppProperty & Casualty Insurance1.14%-0.01 ppReinsurance0.05%-0.01 ppConsumer Finance0.65%-0.00 ppMulti-Sector Holdings0.00%+0.00 pp
3 · Sub-industry
Inside Insurance Brokers
Insurance Brokers · weight
0.77%
Industry change · 12M
-0.02 pp
Insurance Brokers · contribution
-0.020 pp
Company participation
40%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 2024 · 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 |
|---|---|---|---|---|---|---|---|
| Aon plc → AON | United States | $62.7bn | 0.180% | -0.025 pp | -0.040 pp | +4.7% | No |
| Brown & Brown → BRO | United States | $24.1bn | 0.069% | +0.003 pp | +0.013 pp | +51.2% | Yes |
| Arthur J. Gallagher & Co. → AJG | United States | $52.9bn | 0.152% | -0.016 pp | +0.012 pp | +31.9% | No |
| Willis Towers Watson → WTW | United States | $27.9bn | 0.080% | +0.001 pp | -0.008 pp | +18.1% | Yes |
| Marsh McLennan → MRSH | United States | $99.4bn | 0.285% | -0.022 pp | +0.003 pp | +26.6% | 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.