Boundless Bio Ownership | Who Owns Boundless Bio?

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Boundless Bio Ownership Summary

Boundless Bio is owned by 43.78% institutional investors, 11.40% insiders, and 44.83% retail investors. Sectoral asset management is the largest institutional shareholder, holding 3.04% of BOLD shares.

BOLD Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Boundless Bio	43.78%	11.40%	44.83%
Sector	Healthcare Stocks	486.50%	11.08%	-397.59%
Industry	Biotech Stocks	304.14%	11.08%	-215.23%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Sectoral asset management	678.57K	3.04%	$685.36K
Redmile group	589.03K	2.63%	$594.92K
Alyeska investment group	300.00K	1.34%	$303.00K
Almitas capital	235.50K	1.05%	$237.86K
Rbf capital	200.00K	0.89%	$202.00K
Ensign peak advisors	187.50K	0.84%	$189.38K
Sio capital management	163.68K	0.73%	$165.32K
Stonepine capital management	106.17K	0.47%	$107.24K
Blackrock funding, inc. /de	64.26K	0.29%	$64.90K
Y-intercept (hong kong)	55.24K	0.25%	$55.79K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Sectoral asset management	678.57K	0.45%	$685.36K
Stonepine capital management	106.17K	0.11%	$107.24K
Redmile group	589.03K	0.06%	$594.92K
Sio capital management	163.68K	0.06%	$165.32K
Almitas capital	235.50K	0.06%	$237.86K
Rbf capital	200.00K	0.01%	$202.00K
Abel hall	14.40K	0.01%	$14.54K
Xtx topco	40.06K	0.00%	$40.47K
Y-intercept (hong kong)	55.24K	0.00%	$55.79K
Alyeska investment group	300.00K	0.00%	$303.00K

Top Buyers

Holder	Shares	% Assets	Change
Rbf capital	200.00K	0.01%	200.00K
Stonepine capital management	106.17K	0.11%	106.17K
Y-intercept (hong kong)	55.24K	0.00%	55.24K
Hrt financial lp	27.51K	0.00%	27.51K
Qube research	21.54K	-	21.54K

Top Sellers

Holder	Shares	% Assets	Change
Ra capital management	-	-	-2.18M
Blackrock funding, inc. /de	64.26K	-	-563.94K
Pfm health sciences, lp	-	-	-240.51K
Ubs oconnor	-	-	-140.00K
Redmile group	589.03K	0.06%	-136.17K

New Positions

Holder	Shares	% Assets	Change	Value
Rbf capital	200.00K	0.01%	200.00K	$202.00K
Stonepine capital management	106.17K	0.11%	106.17K	$107.24K
Y-intercept (hong kong)	55.24K	0.00%	55.24K	$55.79K
Hrt financial lp	27.51K	0.00%	27.51K	$27.00K
Qube research	21.54K	-	21.54K	$21.76K

Sold Out

Holder	Change
True wealth design	-5.00
Deutsche bank ag\	-97.00
Sterling capital management	-119.00
Nelson, van denburg & campbell wealth management group	-122.00
Nisa investment advisors	-208.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
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%
Jun 30, 2024	47	11.90%	13,842,210	-4.62%	62	1.48%	33	-21.43%	8	-

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 43.78%, followed by 11.40% insiders and 44.82% retail investors. The average institutional ownership in Boundless Bio's industry, Biotech Stocks , is 304.14%, which Boundless Bio falls below.

Who owns the most shares of Boundless Bio?

Boundless Bio’s largest shareholders are Sectoral asset management (678.57K shares, 3.04%), Redmile group (589.03K shares, 2.63%), and Alyeska investment group (300K shares, 1.34%). Together, they hold 7.01% 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 0.45% of its assets in 678.57K Boundless Bio shares, valued at 685.36K$.

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