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Institutional Cluster

NBBK

NB Bancorp, Inc.
MIXED
Impact 3/10
Horizonweeks Processed4mo ago
Institutional cluster: 4 buyers, 3 sellers (mixed)
Actionable Insight ◆ Mixed

The cluster is directionally mixed but contains a high-conviction accumulation signal (3 active managers doubling in size). The 45-day 13F lag means these positions may have already been adjusted. Monitor next 10-Q for insider buying and fundamental updates, and watch for any follow-on 13D/G passive-to-active migration. The net flat flow suggests no urgent re-rating catalyst.

DirectionMixed
Confidencemedium
Horizonweeks
Final — all horizons settled through T+60d
NBBK ▲ +11.52% at T+60d
NEUTRAL call +11.52% · α vs SPY +8.25% · entry $20.62 → $23.00
Entry = T+0 close
Jun 12, 2026
via day close
T+1d
-1.70%
call -1.70% · α -3.46%
$20.27
settled 4mo ago
T+5d
-2.38%
call -2.38% · α -3.05%
$20.13
settled 4mo ago
T+20d
+1.94%
call +1.94% · α +0.16%
$21.02
settled 4mo ago
T+60d
+11.52%
call +11.52% · α +8.25%
$23.00
settled 7w ago

Executive Summary

Mixed institutional activity in NBBK for Q3 2024: four active asset managers (Metlife, Janus, Panagora, Legal & General) collectively added $2.8M in new positions, often doubling or tripling holdings, while three sellers (led by Alliancebernstein trimming $2.6M) reduced exposure by $3.0M. Net dollar change is essentially flat, but the buying side shows strong conviction from active managers.

Key Financial Metrics

Direction
mixed
Buy Value
$4.8M
Sell Value
$3.0M
Net Flow
-$187.0K

Institutional Positions

Net institutional flow: -$187.0K

▲ Buyers (4)

InstitutionActionChangePosition ValueValue Δ
Panagora Asset ManagementADD+44.6%$2.8M$1.2M
Legal & General GroupDOUBLED+1545.9%$1.0M$976.0K
Janus Henderson GroupDOUBLED+120.1%$486.0K$306.0K
Metlife Investment ManagementDOUBLED+129.1%$426.0K$275.0K

▼ Sellers (3)

InstitutionActionChangePrev ValueValue Δ
AlliancebernsteinTRIM-40.4%$9.8M-$2.6M
Rafferty Asset ManagementTRIM-32.2%$1.2M-$205.9K
InvescoTRIM-44.9%$494.0K-$159.3K

Key Facts

  • 4 buyers (3 doubled positions) added $2.8M in value; 3 sellers reduced by $3.0M
  • Alliancebernstein trimmed 40% of its large position, selling $2.6M
  • Legal & General and Janus Henderson roughly doubled their small positions
  • Panagora Asset Management added 45% ($1.2M increment), now the largest buyer
  • Mega-passive Invesco trimmed 45% of its modest stake
  • Net institutional flow essentially flat at ~-$187K

Financial Impact

Net institutional flow of approximately -$0.2M on aggregate buying of $2.8M and selling of $3.0M

institutional ownershipfloat turnover

Risk Factors

  • 13F data is 45+ days stale; positions may have been unwound
  • Large seller Alliancebernstein may reflect a bearish re-rating thesis
  • Small absolute dollar amounts (<$5M total) limit signal strength
  • Cluster is mixed, not unidirectional, reducing consensus conviction

Market Snapshot

Exchange
Nasdaq
Sector
Savings Institutions, Not Federally Chartered
Analyst Consensus
75% bullish (8 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-NBBK-2024-Q3
7 reports for NBBK
Performance horizon

Track record builds as more directional reports settle.

Filters
Rows
Reports for NBBK — sortable, filterable
TypeNow
Oct 15, 2026
11d ago
8-K
NEUTRAL ★ 5/10
$21.86awaiting T+60——
Jun 12, 2026
19w ago
Institutional Cluster
MIXED ★ 3/10
$20.62 $23.00▲ +11.52%▲ +8.25%—
May 21, 2026
22w ago
8-K
NEUTRAL ★ 3/10
$19.88 $22.91▲ +15.24%▲ +10.94%—
May 13, 2026
23w ago
8-K
NEUTRAL ★ 2/10
$19.72 $22.58▲ +14.50%▲ +10.07%—
Apr 24, 2026
26w ago
Insider Cluster
NEUTRAL ★ 3/10
$19.75 $21.04▲ +6.53%▲ +1.45%—
Apr 22, 2026
26w ago
8-K
BEARISH ★ 7/10
$19.09 $20.98▼ −9.88%▼ −4.86%—
Mar 6, 2026
33w ago
Insider Cluster
NEUTRAL ★ 3/10
$20.96 $19.69▼ −6.05%▼ −18.83%—
Showing 7 of 7

US Market Status

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Report published Jun 12, 2026