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Institutional Cluster

COLB

COLUMBIA BANKING SYSTEM, INC.
MIXED
Impact 5/10
Horizonweeks Processed4mo ago
Institutional cluster: 15 buyers, 14 sellers (mixed)
Actionable Insight ◆ Mixed

The heavy net selling by large holders (Norges, Balyasny, Janus) suggests a negative catalyst or risk-off rotation, but the new and doubled positions from Mackenzie and Stifel indicate selective conviction. Monitor upcoming Q2 earnings for credit quality trends and net interest margin updates, which likely drove the divergence. The absence of insider buying weakens the bullish case from the buyer cluster.

DirectionMixed
Confidencemedium
Horizonweeks
Final — all horizons settled through T+60d
COLB ▼ -5.03% at T+60d
NEUTRAL call -5.03% · α vs SPY -7.87% · entry $31.53 → $29.95
Entry = T+0 close
Jun 24, 2026
via day close
T+1d
+1.71%
call +1.71% · α +1.57%
$32.07
settled 4mo ago
T+5d
+3.11%
call +3.11% · α +1.40%
$32.51
settled 4mo ago
T+20d
+3.49%
call +3.49% · α +1.56%
$32.63
settled 3mo ago
T+60d
-5.03%
call -5.03% · α -7.87%
$29.95
settled 6w ago

Executive Summary

A mixed institutional cluster for COLB in Q1 2026 shows 15 buyers adding $56.5M in net new holdings (led by a new $31.1M position from Mackenzie Financial and a $13.0M increase from Stifel Financial) against 14 sellers reducing by $219.6M, including a full $103.0M exit by Norges Bank and a $70.8M trim by Balyasny Asset Management. The net selling pressure of ~$163M dominates, but the presence of several new and doubled positions from active managers suggests a bifurcated thesis with both conviction buyers and significant de-risking.

Key Financial Metrics

Direction
distributing
Buy Value
$96.8M
Sell Value
$219.6M
Net Flow
-$122.8M

Institutional Positions

Net institutional flow: -$122.8M

▲ Buyers (15)

InstitutionActionChangePosition ValueValue Δ
Mackenzie FinancialNEW+0%$31.1M$31.1M
Stifel FinancialDOUBLED+416%$16.1M$13.0M
BofAADD+25.5%$39.8M$7.5M

▼ Sellers (14)

InstitutionActionChangePrev ValueValue Δ
Norges BankEXIT-100%$103.0M-$103.0M
Balyasny Asset ManagementTRIM-66.2%$105.9M-$70.8M
First Trust AdvisorsTRIM-37.8%$54.0M-$21.0M
Janus Henderson GroupNEAR_EXIT-78.3%$17.3M-$13.6M

Key Facts

  • 15 institutional buyers added $56.5M in net new holdings; 14 sellers reduced by $219.6M.
  • Mackenzie Financial initiated a new $31.1M position (1.13M shares), the largest single buy.
  • Stifel Financial more than quadrupled its stake (+416%), adding $13.0M to reach $16.1M.
  • Norges Bank fully exited a $103.0M position (3.69M shares), the largest sell.
  • Balyasny Asset Management trimmed by $70.8M, reducing a $105.9M position to $35.1M.
  • Janus Henderson Group cut 78.3% of its stake, exiting $13.6M.
  • Net aggregate selling of ~$163M (sellers' $219.6M vs buyers' $56.5M).
  • No open-market insider buying corroborates the institutional cluster (confluence score 22/100, divergent).

Financial Impact

Net institutional selling of approximately $163M in Q1 2026, with buyers adding $56.5M and sellers reducing $219.6M.

institutional ownershipfloat turnover

Risk Factors

  • Continued institutional distribution could pressure the stock if the selling trend persists.
  • No insider buying to corroborate the buyer cluster's thesis.
  • Net selling of ~$163M represents a meaningful portion of float and may signal deteriorating fundamentals.

Market Snapshot

Exchange
Nasdaq
Sector
State Commercial Banks
Analyst Consensus
47% bullish (19 analysts)

Investment Themes

Traditional Finance

Documents Analyzed

This report is based on 1 institutional 13F filing from SEC EDGAR.

DocumentAccession Number
INST-CLUSTER Data (Synthetic)inst-cluster-COLB-2026-Q1
9 reports for COLB
Performance horizon
67% Hit rate @ T+1 2 of 3 directional calls Went positive at some point 2 of 3 best @ T+1▲ +3.23%Oct 21, 2026
Filters
Rows
Reports for COLB — sortable, filterable
TypeNow
Oct 22, 2026
4d ago
8-K
BULLISH ★ 6/10
$30.86 $31.06▲ +0.66%▼ −0.05%—
Oct 21, 2026
5d ago
Institutional Cluster
BULLISH ★ 4/10
$29.89 $30.86▲ +3.23%▲ +3.75%—
Sep 30, 2026
26d ago
8-K
NEUTRAL ★ 2/10
$28.73 $28.92▲ +0.66%▼ −0.08%—
Aug 21, 2026
9w ago
Institutional Cluster
MIXED ★ 5/10
$30.81 $30.64▼ −0.55%▼ −0.26%—
Jul 30, 2026
12w ago
8-K
NEUTRAL ★ 2/10
$31.27 $31.50▲ +0.74%▼ −0.69%—
Jun 24, 2026
17w ago
Institutional Cluster
MIXED ★ 5/10
$31.53 $32.07▲ +1.71%▲ +1.57%—
Jun 11, 2026
19w ago
Institutional Cluster
NEUTRAL ★ 3/10
$30.82 $31.31▲ +1.59%▲ +1.05%—
May 15, 2026
23w ago
8-K
NEUTRAL ★ 3/10
$28.77 $29.01▲ +0.83%▲ +0.90%—
Apr 23, 2026
26w ago
8-K
BEARISH ★ 7/10
$29.22 $29.85▼ −2.16%▼ −1.99%—
Showing 9 of 9

US Market Status

Market Closed — Opens in 1h 37m

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Report published Jun 24, 2026