The buying is entirely from passive index rebalancers, not active managers with differentiated insight. The 45-day 13F lag means these positions were established by September 30, 2025, and may have already been adjusted. Monitor for any active manager 13F filings or insider activity for a more actionable signal.
Executive Summary
Four mega-passive institutional investors (Vanguard, BlackRock, State Street, Fidelity) significantly increased their COLB positions in Q3 2025, adding a combined $632.7M in new holdings.
Key Financial Metrics
Institutional Positions
Net institutional flow: $632.7M
▲ Buyers (4)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Vanguard | ADD | +41.3% | $768.4M | $274.6M |
| BlackRock | ADD | +41.8% | $693.3M | $249.2M |
| State Street | ADD | +32.5% | $345.1M | $108.6M |
| Fidelity | ADD | +36.3% | $647.0K | $359.0K |
Key Facts
- 4 passive institutional buyers added $632.7M in COLB shares during Q3 2025
- Vanguard increased holdings by 41.3% (8.73M shares), adding $274.6M
- BlackRock increased holdings by 41.8% (7.94M shares), adding $249.2M
- State Street increased holdings by 32.5% (3.29M shares), adding $108.6M
- Fidelity added a small position worth $359K
- No institutional sellers were identified in the cluster
- All buyers are mega-passive index fund managers, not active or activist funds
Financial Impact
4 passive institutions accumulated $632.7M in new COLB holdings during Q3 2025, with total current holdings of $1.81B
Risk Factors
- Passive buying provides no fundamental thesis — it reflects index composition changes, not conviction
- 13F data is 45+ days stale; positions may have been unwound
- No active managers or hedge funds participated in this cluster
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-COLB-2025-Q3 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 22, 2026 3d ago | 8-K | $30.02 | awaiting T+1 | — | — |
Oct 21, 2026 4d ago | Institutional Cluster | $29.89 $30.86 | ▲ +3.23% | ▲ +3.75% | — |
Sep 30, 2026 25d 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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