Boundless Bio Ownership | Who Owns Boundless Bio?

Overview Forecast RevenueFinancials Chart

Boundless Bio Ownership Summary

Boundless Bio is owned by 2.55% institutional investors, 11.40% insiders, and 86.06% retail investors. Fmr is the largest institutional shareholder, holding 13.86% of BOLD shares.

BOLD Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Boundless Bio	2.55%	11.40%	86.06%
Sector	Healthcare Stocks	42.54%	10.83%	46.63%
Industry	Biotech Stocks	45.22%	10.75%	44.04%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Fmr	3.10M	13.86%	$3.81M
Nextech invest	1.23M	5.49%	$1.51M
Sectoral asset management	678.57K	3.04%	$834.65K
Vanguard group	569.66K	2.55%	$700.68K
Wellington management group llp	556.23K	2.49%	$684.17K
Stonepine capital management	413.45K	1.85%	$508.55K
Alyeska investment group	300.00K	1.34%	$369.00K
Redmile group	245.46K	1.10%	$301.91K
Renaissance	223.56K	1.00%	$274.98K
Rbf capital	200.00K	0.89%	$246.00K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Sectoral asset management	678.57K	0.52%	$834.65K
Stonepine capital management	413.45K	0.41%	$508.55K
Nextech invest	1.23M	0.23%	$1.51M
Sio capital management	163.68K	0.05%	$201.32K
Redmile group	245.46K	0.03%	$301.91K
Almitas capital	86.81K	0.02%	$106.77K
Rbf capital	200.00K	0.01%	$246.00K
Abel hall	14.40K	0.01%	$14.54K
Xtx topco	29.08K	0.00%	$35.77K
Bridgeway capital management	50.50K	0.00%	$62.12K

Top Buyers

Holder	Shares	% Assets	Change
Stonepine capital management	413.45K	0.41%	307.28K
Renaissance	223.56K	0.00%	102.56K
Vanguard group	569.66K	-	88.39K
Geode capital management	102.27K	-	43.37K
Squarepoint ops	50.77K	0.00%	32.37K

Top Sellers

Holder	Shares	% Assets	Change
Ra capital management	-	-	-2.18M
Redmile group	245.46K	0.03%	-343.58K
Pfm health sciences, lp	-	-	-240.51K
Almitas capital	86.81K	0.02%	-148.70K
Ubs oconnor	-	-	-140.00K

New Positions

Holder	Shares	% Assets	Change	Value
Abel hall	14.40K	0.01%	14.40K	$14.54K
Optiver b.v.	168.00	-	168.00	$207.00

Sold Out

Holder	Change
Eversource wealth advisors	-2.00
True wealth design	-5.00
Clearstead advisors	-24.00
Deutsche bank ag\	-97.00
Sterling capital management	-119.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Sep 30, 2025	2	-94.87%	569,825	-93.58%	2	0.16%	2	-88.24%	-	-100.00%
Jun 30, 2025	42	-20.75%	9,787,223	-42.33%	43	0.76%	18	-14.29%	17	13.33%
Mar 31, 2025	5	-90.74%	3,986,980	-69.24%	17	0.53%	-	-100.00%	1	-66.67%
Dec 31, 2024	54	1.89%	12,962,527	-1.19%	58	1.68%	37	60.87%	3	-81.25%
Sep 30, 2024	53	12.77%	13,118,509	-5.23%	58	1.49%	23	-30.30%	16	100.00%

Recent Insider Transactions

Date	Name	Role	Activity	Value
Nov 08, 2019	Patterson Matthew R	Chief Executive Officer	Sell	$432.78K
Aug 12, 2019	Patterson Matthew R	Chief Executive Officer	Sell	$34.52K
Aug 12, 2019	Patterson Matthew R	Chief Executive Officer	Sell	$646.31K
Feb 25, 2019	Patterson Matthew R	Chief Executive Officer	Sell	$120.00K
Oct 01, 2018	Patterson Matthew R	Chief Executive Officer	Sell	$202.73K

Insider Transactions Trends

Date	Buy	Sell
2025 Q2	-	-
2020 Q1	-	-
2019 Q4	-	1
2019 Q3	-	2
2019 Q2	-	-

BOLD Ownership FAQ

Who Owns Boundless Bio?

Boundless Bio shareholders are primarily institutional investors at 2.55%, followed by 11.40% insiders and 86.05% retail investors. The average institutional ownership in Boundless Bio's industry, Biotech Stocks , is 45.22%, which Boundless Bio falls below.

Who owns the most shares of Boundless Bio?

Boundless Bio’s largest shareholders are Fmr (3.1M shares, 13.86%), Nextech invest (1.23M shares, 5.49%), and Sectoral asset management (678.57K shares, 3.04%). Together, they hold 22.39% of Boundless Bio’s total shares outstanding.

Does Blackrock own Boundless Bio?

BlackRock is not among the top 10 institutional shareholders of Boundless Bio.

Who is Boundless Bio’s biggest shareholder by percentage of total assets invested?

Sectoral asset management is Boundless Bio’s biggest shareholder by percentage of total assets invested, with 0.52% of its assets in 678.57K Boundless Bio shares, valued at 834.65K$.

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