Vault-13

BLUEJAY DIAGNOSTICS INC BJDX

COM NEW · Common Stock · CUSIP 095633608

8 institutional holders +2 vs Q1 2026
216,120216.1k shares reported held*
4.8% of all shares outstanding*
$259.3kreported value*
5 new 1 added 1 reduced 3 sold out net bought ≈ $188.8k (+157.3k shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 4.5m as of 2026-08-07, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $1.20.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

0510Q4 25: 1Q1 26: 6Q2 26: 88Q4 25Q1 26Q2 26
Numbers
QuarterHolders
Q4 20251
Q1 20266
Q2 20268

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
10010Q1 26: 6 bought or addedQ1 26: 1 cut or sold outQ1 26Q2 26: 6 bought or addedQ2 26: 4 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q1 202661
Q2 202664

Biggest buyers

ARMISTICE CAPITAL, LLC New +131,000+131.0k
HEIGHTS CAPITAL MANAGEMENT, INC New +35,400+35.4k
BOOTHBAY FUND MANAGEMENT, LLC New +27,130+27.1k
BANK OF AMERICA CORP /DE/ New +10,337+10.3k
VANGUARD FIDUCIARY TRUST CO New +10,225+10.2k
Tower Research Capital LLC (TRC) Added +178+178

Biggest sellers

SABBY MANAGEMENT, LLC Sold out -28,726-28.7k
GEODE CAPITAL MANAGEMENT, LLC Sold out -28,127-28.1k
UBS Group AG Sold out -124-124
Caitong International Asset Management Co., Ltd Reduced -2-2

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
ARMISTICE CAPITAL, LLC 13G · institution +5.0 pts · filed 2026-08-14 10.0% +5.0 pts 142.7k 2026-08-14
Ayrton Capital LLC 13G · institution new · filed 2026-08-13 10.0% new 107.7k 2026-08-13
INTRACOASTAL CAPITAL, LLC 13G · passive investor new · filed 2026-06-05 10.0% new 0 2026-06-05

Fell to 5% or below in the last year: Braeden Lichti (0.0%, 2026-06-02), NORTHSTRIVE FUND II LP (0.0%, 2026-06-02)

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
505Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 0 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 0 sellingQ3 25Q4 25: 0 buyingQ4 25: 0 sellingQ1 26: 5 buyingQ1 26: 0 sellingQ1 26Q2 26: 0 buyingQ2 26: 0 sellingQ3 26: 0 buyingQ3 26: 0 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20250—0——
Q2 20250—0——
Q3 20250—0——
Q4 20250—0——
Q1 20265$25.0k0——
Q2 20260—0——
Q3 20260—0——
DateInsiderTradeSharesPrice ValueTheir holding
2026-07-10 HRT FINANCIAL LP 10% owner Sold 34,938 $1.40 $48.9k34.9k shares -28%
2026-07-09 HRT FINANCIAL LP 10% owner Bought 64,047 $1.51 $96.7k64.0k shares +102%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 ARMISTICE CAPITAL, LLC 0.00% of their portfolio NEW YORK, NY 131,000131.0k $157.2k $157.2k 0.00% New
2 HEIGHTS CAPITAL MANAGEMENT, INC 0.01% of their portfolio SAN FRANCISCO, CA 35,40035.4k $42.5k $42.5k 0.01% New
3 BOOTHBAY FUND MANAGEMENT, LLC 0.00% of their portfolio NEW YORK, NY 27,13027.1k $32.6k $32.6k 0.00% New
4 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 10,33710.3k $12.4k $12.4k 0.00% New
5 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 10,22510.2k $12.3k $12.3k 0.00% New
6 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 1,9071.9k $2.3k $2.3k 0.00% Added +178 +178
7 L1 Global Manager Pty Ltd 0.00% of their portfolio Melbourne, C3 120120 $144 $144 0.00% Unchanged
8 Caitong International Asset Management Co., Ltd 0.00% of their portfolio HONG KONG, K3 11 $1 $1 0.00% Reduced -2 -2