MBBC MONTEREY BAY BANCORP INC

NSD
$15.12

MONTEREY BAY BANCORP INC (MBBC) Institutional Ownership

What the institutions did with MBBC last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.

Managers compared
13
filed both this quarter and last
Managers holding
12
+3 on the quarter
Buyers
6
4 opened new
Sellers
4
1 sold out entirely
Buyer share
60.0%
of managers who traded it
Breadth
+20.0
net buyers, as a share of those trading

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Ownership map

Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.

Cut Unchanged Added Color saturates at ±50%.

Largest holders

Manager Shares % of reported
RAFFLES ASSOCIATES LP 215.3K 29.0%
ALLIANCEBERNSTEIN L.P. 153.2K 20.7%
MALTESE CAPITAL MANAGEMENT LLC 145.3K 19.6%
VANGUARD CAPITAL MANAGEMENT LLC 76.0K 10.2%
Minerva Advisors LLC 55.8K 7.5%
KLCM Advisors, Inc. 34.3K 4.6%
STILWELL VALUE LLC 20.0K 2.7%
VANGUARD FIDUCIARY TRUST CO 11.5K 1.6%
CITADEL ADVISORS LLC 11.0K 1.5%
GEODE CAPITAL MANAGEMENT, LLC 10.9K 1.5%
BlackRock, Inc. 8.4K 1.1%
UBS Group AG 89 0.0%

Largest changes

Manager Action Previous Current Change
RAFFLES ASSOCIATES LP Increased 107.7K 215.3K +107.7K
CITADEL ADVISORS LLC New 0 11.0K +11.0K
GEODE CAPITAL MANAGEMENT, LLC New 0 10.9K +10.9K
BlackRock, Inc. New 0 8.4K +8.4K
VANGUARD FIDUCIARY TRUST CO Reduced 16.4K 11.5K -4.9K
Minerva Advisors LLC Reduced 59.0K 55.8K -3.2K
VANGUARD CAPITAL MANAGEMENT LLC Reduced 76.6K 76.0K -571
Tower Research Capital LLC (TRC) Sold Out 226 0 -226
MALTESE CAPITAL MANAGEMENT LLC Increased 145.1K 145.3K +198
UBS Group AG New 0 89 +89

13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.