BJDX Bluejay Diagnostics, Inc.

NASDAQ
$0.92

Bluejay Diagnostics, Inc. (BJDX) Institutional Ownership

What the institutions did with BJDX 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
11
filed both this quarter and last
Managers holding
8
+2 on the quarter
Buyers
6
5 opened new
Sellers
4
3 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
ARMISTICE CAPITAL, LLC 131.0K 60.6%
HEIGHTS CAPITAL MANAGEMENT, INC 35.4K 16.4%
BOOTHBAY FUND MANAGEMENT, LLC 27.1K 12.6%
BANK OF AMERICA CORP /DE/ 10.3K 4.8%
VANGUARD FIDUCIARY TRUST CO 10.2K 4.7%
Tower Research Capital LLC (TRC) 1.9K 0.9%
L1 Global Manager Pty Ltd 120 0.1%
Caitong International Asset Management Co., Ltd 1 0.0%

Largest changes

Manager Action Previous Current Change
ARMISTICE CAPITAL, LLC New 0 131.0K +131.0K
HEIGHTS CAPITAL MANAGEMENT, INC New 0 35.4K +35.4K
SABBY MANAGEMENT, LLC Sold Out 28.7K 0 -28.7K
GEODE CAPITAL MANAGEMENT, LLC Sold Out 28.1K 0 -28.1K
BOOTHBAY FUND MANAGEMENT, LLC New 0 27.1K +27.1K
BANK OF AMERICA CORP /DE/ New 0 10.3K +10.3K
VANGUARD FIDUCIARY TRUST CO New 0 10.2K +10.2K
Tower Research Capital LLC (TRC) Increased 1.7K 1.9K +178
UBS Group AG Sold Out 124 0 -124
Caitong International Asset Management Co., Ltd Reduced 3 1 -2

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.