Insurance Brokers
Insurance Brokers is losing market weight. Lost weight for 2 consecutive months.
Most of this industry's losses came from a few companies.
Where did the weight change come from?
12-month contribution in universe percentage points · contributions add to the industry change
The three largest same-direction contributors explain 100% of gross losses. Opposing contributions can make an individual company’s change larger than the industry’s net change.
How has it moved through history?
Share of matched S&P 500 members
Jan 2018 – Jan 2019 · market weight (%)
Relative performance
Industry return versus ACWI · no future data shown
Is participation broad or concentrated?
Actual constituent counts at this date, not the legacy synthetic breadth proxy
This is size concentration, not contribution to the 12-month change. The attribution above measures the latter.
Evidence can disagree
Independent dimensions · no combined score or bullish/bearish verdict
Other evidence and availability
Valuation data: unavailable; shown as zero placeholder.
Attention data: unavailable; shown as zero placeholder.
Actual fund flows: unavailable. No ETF, mutual-fund or institutional flow feed is connected.
Volume / turnover: unavailable in this dataset.
Follow the contribution to individual companies
Sorted by absolute 12-month weight contribution, not investment merit
| Company | Sub-industry | Country | Universe weight | 12M contribution | 12M price return | Revisions |
|---|---|---|---|---|---|---|
| Marsh McLennan → MRSH | Insurance Brokers | United States | 0.147% | -0.097 pp | +7.7% | 0.0 |
| Aon plc → AON | Insurance Brokers | United States | 0.124% | -0.079 pp | +11.4% | 0.0 |
| Arthur J. Gallagher & Co. → AJG | Insurance Brokers | United States | 0.045% | -0.025 pp | +11.9% | 0.0 |
Underlying monthly industry observations
| Month | Weight | 1M change | 3M change | 6M change | 12M change | Relative return · 12M |
|---|---|---|---|---|---|---|
| Jan 2019 | 0.316% | -0.001 pp | -0.002 pp | -0.209 pp | -0.200 pp | +18.1% |
| Dec 2018 | 0.317% | -0.010 pp | +0.022 pp | -0.211 pp | -0.199 pp | +17.8% |
| Nov 2018 | 0.328% | +0.009 pp | +0.033 pp | -0.201 pp | -0.189 pp | +21.4% |
| Oct 2018 | 0.318% | +0.023 pp | -0.206 pp | -0.229 pp | -0.198 pp | +17.4% |
| Sep 2018 | 0.295% | +0.001 pp | -0.233 pp | -0.250 pp | -0.221 pp | +6.6% |
| Aug 2018 | 0.294% | -0.230 pp | -0.234 pp | -0.240 pp | -0.222 pp | +5.5% |
| Jul 2018 | 0.525% | -0.003 pp | -0.023 pp | +0.008 pp | +0.008 pp | +4.6% |
| Jun 2018 | 0.528% | -0.000 pp | -0.018 pp | +0.012 pp | +0.012 pp | +3.4% |
| May 2018 | 0.528% | -0.019 pp | -0.006 pp | +0.012 pp | +0.012 pp | +2.9% |
| Apr 2018 | 0.548% | +0.002 pp | +0.031 pp | +0.031 pp | +0.031 pp | +5.5% |
| Mar 2018 | 0.546% | +0.011 pp | +0.029 pp | +0.029 pp | +0.029 pp | +5.4% |
| Feb 2018 | 0.535% | +0.018 pp | +0.018 pp | +0.018 pp | +0.018 pp | +4.0% |
| Jan 2018 | 0.516% | +0.000 pp | +0.000 pp | +0.000 pp | +0.000 pp | +0.0% |
How are these descriptive states defined?
Gaining / losing: 12-month weight change above +0.005pp / below −0.005pp. Direction and speed are separate dimensions, not mutually exclusive recommendations.
Accelerating / slowing: compare the most recent 3M change with the preceding 3M change. Accelerating means a positive change speeds up by >0.02pp. Slowing means the magnitude of movement declines by >0.02pp. A falling industry can also slow.
Reversing: the last two 3M changes have opposite signs, outside a ±0.005pp tolerance. Persistence counts consecutive same-direction monthly changes.
Broad / concentrated: company attribution, not a market-cap concentration shortcut. Concentrated means the three largest same-direction contributors account for ≥70% of gross same-direction changes; otherwise broad requires ≥60% of constituents moving with the industry. Other cases are mixed.
Weights use matched S&P 500 members’ market-cap estimates, based on SEC-reported shares available by each month-end and monthly closing prices. Companies without a matched price or share record are omitted, so the denominator is the matched sample rather than every index member. These are not official float-adjusted S&P weights. Flow is not measured.