Boundless Bio Ownership | Who Owns Boundless Bio?

Boundless Bio Ownership Summary

Boundless Bio is owned by 37.95% institutional investors, 11.38% insiders, and 50.67% retail investors. Fmr is the largest institutional shareholder, holding 12.05% of BOLD shares. Fidelity Growth Compy Commingled Pl S is the top mutual fund, with 5.54% of its assets in Boundless Bio shares.

BOLD Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Boundless Bio	37.95%	11.38%	50.67%
Sector	Healthcare Stocks	35.58%	11.87%	52.55%
Industry	Biotech Stocks	35.75%	11.83%	52.41%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Fmr	2.70M	12.05%	$2.96M
Citadel advisors	1.34M	6.00%	$1.48M
Nextech invest	1.23M	5.49%	$1.51M
Sectoral asset management	678.57K	3.03%	$746.43K
Vanguard group	662.76K	2.96%	$795.31K
Stonepine capital management	597.68K	2.67%	$657.45K
Wellington management group llp	556.23K	2.49%	$611.86K
Renaissance	399.00K	1.78%	$438.90K
Alyeska investment group	300.00K	1.34%	$330.00K
Redmile group	245.46K	1.10%	$301.91K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Sectoral asset management	678.57K	0.62%	$746.43K
Stonepine capital management	597.68K	0.26%	$657.45K
Nextech invest	1.23M	0.23%	$1.51M
Redmile group	245.46K	0.03%	$301.91K
Sio capital management	163.68K	0.03%	$180.05K
Almitas capital	86.81K	0.02%	$106.77K
Rbf capital	200.00K	0.01%	$220.00K
Gsa capital partners llp	96.82K	0.01%	$107.00K
Landscape capital management	85.79K	0.01%	$94.37K
Bridgeway capital management	50.50K	0.00%	$55.55K

Top Buyers

Holder	Shares	% Assets	Change
Vanguard group	662.76K	-	93.10K
Vanguard fiduciary trust	65.14K	-	65.14K
Renaissance	399.00K	0.00%	57.60K
Gsa capital partners llp	96.82K	0.01%	34.35K
Geode capital management	127.58K	-	33.48K

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
Northern trust	-	-	-189.47K
Almitas capital	86.81K	0.02%	-148.70K

New Positions

Holder	Shares	% Assets	Change	Value
Vanguard fiduciary trust	65.14K	-	65.14K	$71.65K
Pure financial advisors	10.10K	0.00%	10.10K	$11.11K
Vanguard global advisers	429.00	-	429.00	$472.00
Cwm	8.00	-	8.00	$9.00
Caitong asset management	3.00	-	3.00	$3.00

Sold Out

Holder	Change
Barclays	-2.00
Eversource wealth advisors	-2.00
True wealth design	-5.00
Clearstead advisors	-24.00
Deutsche bank ag\	-97.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	36	2.86%	8,485,823	-3.36%	37	2.47%	14	-12.50%	9	12.50%
Dec 31, 2025	5	-85.29%	1,403,999	-85.41%	6	0.34%	4	-63.64%	-	-100.00%
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%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Fidelity Growth Compy Commingled Pl S	1.24M	5.54%	1.48K
Fidelity Growth Company Fund	900.27K	4.02%	-
Vanguard Total Stock Mkt Idx Inv	445.18K	1.99%	-
Fidelity Series Growth Company	233.62K	1.04%	-
Fidelity Growth Company K6	227.97K	1.02%	-1.48K
Vanguard Institutional Extnd Mkt Idx Tr	152.01K	0.68%	-
Fidelity Extended Market Index	82.96K	0.37%	15.24K
Fidelity Global Micro-Cap F	80.00K	0.36%	-
Bridgeway Ultra-Small Company Market	50.50K	0.23%	-
iShares Micro-Cap ETF	42.72K	0.19%	-

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 37.95%, followed by 11.38% insiders and 50.67% retail investors. The average institutional ownership in Boundless Bio's industry, Biotech Stocks , is 35.75%, which Boundless Bio exceeds.

Who owns the most shares of Boundless Bio?

Boundless Bio’s largest shareholders are Fmr (2.7M shares, 12.05%), Citadel advisors (1.34M shares, 6.00%), and Nextech invest (1.23M shares, 5.49%). Together, they hold 23.55% 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 0.62% of its assets in 678.57K Boundless Bio shares, valued at 746.43K$.

Who is the top mutual fund holder of Boundless Bio shares?

Fidelity Growth Compy Commingled Pl S is the top mutual fund holder of Boundless Bio shares, with 5.54% of its total shares outstanding invested in 1.24M Boundless Bio shares.

Try Tickergate Pro Free

Customize Everything. 100% Flexibility. Fast and Easy to Use (No code or Excel Needed)

Customize your own personal stocks lists, views and charts
Choose from hundreds of fields, up to 15 years of history
Conduct deep comparison analysis

Discover trending investment themes
Find your next best investment
Research stocks using tools