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BOLD · NASDAQ

$2.43+$0.12 (+5.19%)TodayMarket closed · Oct 20, 7:30 PM ET

Prev close $2.31

Who owns BOLD

Largest institutional holders, from their latest 13F filings

The 10 largest institutions hold 65.5% of BOLD’s shares.

ARCH Venture Partners12.0%
Fidelity Management & Research Company LLC11.5%
Tang Capital Management, LLC11.4%
Adar1 Capital Management LLC8.8%
Next 6 largest institutions21.9%
All other shareholders34.5%

Top institutional holders of BOLD
Holder	Shares	% of shares	Change, last filing	Filed
ARCH Venture Partners	2.69M	11.99%	+0	Jul 1, 2026
Fidelity Management & Research Company LLC	2.58M	11.46%	−114.40K	Jun 30, 2026
Tang Capital Management, LLC	2.56M	11.39%	+2.56M	Jun 30, 2026
Adar1 Capital Management LLC	1.97M	8.76%	+1.97M	Jun 30, 2026
Bayer HealthCare LLC	1.62M	7.19%	+0	Apr 20, 2026
Cormorant Asset Management, LP	1.00M	4.45%	+1.00M	Jun 30, 2026
Lim (Jonathan E)	653.48K	2.91%	+0	Apr 20, 2026
Vanguard Capital Management, LLC	614.92K	2.74%	+17.73K	Jun 30, 2026
Wellington Management Company, LLP	556.23K	2.48%	+0	Jun 30, 2026
Millennium Management LLC	478.64K	2.13%	+378.76K	Jun 30, 2026

Largest mutual fund holders

Top mutual fund holders of BOLD
Holder	Shares	% of shares	Change, last filing	Filed
Fidelity Growth Company Fund	899.16K	4.00%	+0	Jul 31, 2026
Vanguard Total Stock Market Index Fund	445.18K	1.98%	+0	Jul 31, 2026
Fidelity Growth Company K6 Fund	227.61K	1.01%	+0	Jul 31, 2026
Fidelity Series Growth Company Fund	199.72K	0.89%	+0	Jul 31, 2026
Vanguard Extended Market Index Fund	152.01K	0.68%	+0	Jul 31, 2026

Insider trades

Form 4 filings by officers, directors and large holders

Over the last 6 months, insiders bought $800.33K (16 trades) and sold $134.03K (3 trades) of BOLD on the open market.

Latest BOLD insider transactions
Insider	Date	Type	Shares	Price	Value
TANG KEVIN	Aug 26, 2026	Sale	18.30K	$2.97	$54.35K
TANG KEVIN	Jul 21, 2026	Buy	2.98K	$2.44	$7.26K
TANG KEVIN	Jul 20, 2026	Buy	1.62K	$2.44	$3.96K
TANG KEVIN	Jul 17, 2026	Buy	265	$2.44	$647
TANG KEVIN	Jul 16, 2026	Buy	18.49K	$2.44	$45.12K
TANG KEVIN	Jul 15, 2026	Buy	1.60K	$2.44	$3.90K
TANG KEVIN	Jul 14, 2026	Buy	43.88K	$2.43	$106.62K
TANG KEVIN	Jul 13, 2026	Buy	48.21K	$2.42	$116.67K
TANG KEVIN	Jul 10, 2026	Buy	43.37K	$2.43	$105.38K
TANG KEVIN	Jul 9, 2026	Buy	7	$2.48	$17

Short interest

Settled Sep 30, 2026

Shares short: 778.47K
Days to cover: 4.25
% of shares outstanding: 3.46%
Average daily volume: 183.18K
Change since last report: −4.1%

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