The cluster is dominated by active asset managers with no passive/index fund participants, strengthening the signal. Monitor Q4 2026 13F filings to see if these positions were maintained or increased, and watch for any insider buying (Form 4) to corroborate the thesis.
Executive Summary
Five asset managers increased their COLB positions in Q3 2026, with two doubling holdings and one adding nearly 100%, while only one small seller trimmed a negligible amount. The net $2.7M inflow into the stock suggests a shared positive view on Columbia Banking System, though the 45-day reporting lag means the cluster may have been partially unwound.
Key Financial Metrics
Institutional Positions
Net institutional flow: $2.7M
▲ Buyers (5)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Farther Finance Advisors | ADD | +99.4% | $889.0K | $389.0K |
| Wealth Enhancement Advisory Services | DOUBLED | +103.2% | $2.6M | $987.0K |
| Mather Group | DOUBLED | +264.3% | $21.0K | $14.0K |
| Concurrent Investment Advisors | ADD | +26.5% | $287.0K | $33.0K |
| Td Waterhouse Canada | DOUBLED | +185.6% | $2.1M | $1.3M |
▼ Sellers (1)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| Assetmark | TRIM | -27.4% | $20.0K | -$7.0K |
Key Facts
- 5 buyers added a net $2.7M in COLB positions during Q3 2026
- Wealth Enhancement Advisory Services doubled its stake to $2.6M (+103.2% shares)
- Td Waterhouse Canada doubled its stake to $2.1M (+185.6% shares)
- Farther Finance Advisors added 99.4% to its position, now worth $889K
- Only 1 seller (Assetmark) trimmed a small position by $7K
- All participants are asset managers (no passive/index funds in the cluster)
Financial Impact
5 institutions accumulated $2.7M in new COLB positions while 1 reduced holdings by $7K, for a net inflow of approximately $2.7M
Risk Factors
- 13F data is 45+ days stale; positions may have been unwound since quarter-end
- Small absolute dollar amounts ($5.9M total holdings) limit the signal's market impact
- No insider buying confluence to confirm the bullish thesis
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-COLB-2026-Q3 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 22, 2026 4d ago | 8-K | $30.86 $31.06 | ▲ +0.66% | ▼ −0.05% | — |
Oct 21, 2026 5d ago | Institutional Cluster | $29.89 $30.86 | ▲ +3.23% | ▲ +3.75% | — |
Sep 30, 2026 26d ago | 8-K | $28.73 $28.92 | ▲ +0.66% | ▼ −0.08% | — |
Aug 21, 2026 9w ago | Institutional Cluster | $30.81 $30.64 | ▼ −0.55% | ▼ −0.26% | — |
Jul 30, 2026 12w ago | 8-K | $31.27 $31.50 | ▲ +0.74% | ▼ −0.69% | — |
Jun 24, 2026 17w ago | Institutional Cluster | $31.53 $32.07 | ▲ +1.71% | ▲ +1.57% | — |
Jun 11, 2026 19w ago | Institutional Cluster | $30.82 $31.31 | ▲ +1.59% | ▲ +1.05% | — |
May 15, 2026 23w ago | 8-K | $28.77 $29.01 | ▲ +0.83% | ▲ +0.90% | — |
Apr 23, 2026 26w ago | 8-K | $29.22 $29.85 | ▼ −2.16% | ▼ −1.99% | — |
US Market Status
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