The cluster shows strong active-manager conviction, but the 45-day lag means positions may have changed. Monitor next 13F filing for retention of these positions and watch for insider buying to corroborate the thesis.
Executive Summary
Four institutional investors increased their positions in Arthur J. Gallagher & Co. during Q3 2026, with aggregate buying of $61.7M versus only $1.3M in selling. The cluster is dominated by active asset managers, with Assenagon Asset Management more than doubling its stake to $63M. However, the 13F data is 45+ days stale and insider activity is absent, limiting conviction.
Key Financial Metrics
Institutional Positions
Net institutional flow: $61.7M
▲ Buyers (4)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Exchange Traded Concepts | DOUBLED | +1561.4% | $815.0K | $765.0K |
| Daiwa Securities Group | ADD | +30.4% | $13.8M | $3.2M |
| Assenagon Asset Management | DOUBLED | +721.1% | $63.0M | $55.2M |
| Td Waterhouse Canada | ADD | +53.6% | $7.9M | $2.6M |
▼ Sellers (1)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| Davenport & Co | TRIM | -68.7% | $1.9M | -$1.3M |
Key Facts
- 4 institutional buyers accumulated $61.7M net in Q3 2026
- Assenagon Asset Management increased its position by 721% to $63.0M
- Only 1 seller (Davenport & Co) trimmed $1.3M
- Insider buying confluence score is low at 15/100 with no open-market insider purchases
- 13F data is subject to 45-day reporting lag and may not reflect current positions
Financial Impact
4 institutions accumulated $61.7M in new positions while 1 reduced holdings by $1.3M, for net buying of approximately $60.4M
Risk Factors
- 13F data is stale (quarter-end positions, not current)
- No insider buying to confirm institutional conviction
- Hedge funds may have already unwound these positions
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 institutional 13F filing from SEC EDGAR.
| Document | Accession Number |
|---|---|
| INST-CLUSTER Data (Synthetic) | inst-cluster-AJG-2026-Q3 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 29, 2026 3d ago | 8-K | No price | awaiting T+20 | awaiting T+20 | No price |
Oct 29, 2026 3d ago | Press Release | $267.00 | awaiting T+20 | awaiting T+20 | No price |
Oct 29, 2026 3d ago | Institutional Cluster | $268.20 | awaiting T+20 | awaiting T+20 | No price |
Oct 27, 2026 4d ago | Press Release | $260.42 | awaiting T+20 | awaiting T+20 | No price |
Oct 8, 2026 23d ago | 3/A | $232.70 | awaiting T+20 | awaiting T+20 | No price |
Aug 26, 2026 9w ago | Insider Cluster | $260.15 $227.13 | ▼ −12.69% | ▼ −12.18% | No price |
Aug 8, 2026 12w ago | Institutional Cluster | $252.43 $251.45 | ▼ −0.39% | ▲ +0.53% | No price |
Jul 30, 2026 13w ago | Press Release | No price | awaiting T+20 | awaiting T+20 | No price |
Jul 29, 2026 13w ago | Press Release | $256.46 $260.15 | ▲ +1.44% | ▼ −2.53% | No price |
Jul 29, 2026 13w ago | 8-K | $268.91 $265.03 | ▼ −1.44% | ▼ −6.46% | No price |
US Market Status
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