Vault-13

BOUNDLESS BIO INC BOLD

COM · Common Stock · CUSIP 10170A100

Company in San Diego, United States

48 institutional holders +4 vs Q1 2024
13,844,89913.8m shares reported held*
$53.5mreported value*
20 new 12 added 8 reduced 15 sold out net sold ≈ $2.5m (-647.9k 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. Implied quarter-end price ≈ $3.86.

Trends to Q2 2024

Institutional holders

Managers reporting a position, each quarter

0204060Q1 24: 44Q2 24: 4848Q1 24Q2 24
Numbers
QuarterHolders
Q1 202444
Q2 202448

Biggest buyers

BlackRock Inc. Added +367,094+367.1k
MORGAN STANLEY New +186,932+186.9k
ExodusPoint Capital Management, LP Added +115,567+115.6k
MILLENNIUM MANAGEMENT LLC Added +111,313+111.3k
GEODE CAPITAL MANAGEMENT, LLC New +110,634+110.6k
NORGES BANK Added +87,211+87.2k
FMR LLC Added +74,912+74.9k
Alyeska Investment Group, L.P. Added +50,000+50.0k
RENAISSANCE TECHNOLOGIES LLC New +45,383+45.4k
Walleye Capital LLC New +40,539+40.5k

Biggest sellers

FEDERATED HERMES, INC. Sold out -375,000-375.0k
SILVERARC CAPITAL MANAGEMENT, LLC Sold out -312,500-312.5k
WELLINGTON MANAGEMENT GROUP LLP Reduced -223,571-223.6k
SECTORAL ASSET MANAGEMENT INC Reduced -173,601-173.6k
CITADEL ADVISORS LLC Reduced -136,277-136.3k
Altium Capital Management LLC Reduced -116,851-116.9k
LMR Partners LLP Sold out -89,249-89.2k
Logos Global Management LP Reduced -82,194-82.2k
Redmile Group, LLC Reduced -79,451-79.5k
Schonfeld Strategic Advisors LLC Sold out -64,421-64.4k

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
FMR LLC 13G · institution filed 2026-02-05 12.0% 2.7m≈ $6.7m 2026-02-05
TANG CAPITAL MANAGEMENT LLC 13G · passive investor new · filed 2026-06-29 11.3% new 2.5m≈ $6.3m 2026-06-29
Hornby Zachary 13G · passive investor new · filed 2026-08-27 9.8% new 2.4m≈ $6.1m 2026-08-27
ADAR1 Capital Management, LLC 13G · institution new · filed 2026-08-14 8.8% new 2.0m≈ $4.9m 2026-08-14

Fell to 5% or below in the last year: CITADEL ADVISORS LLC (0.6%, 2026-08-14), Nextech VI GP S.A.R.L. (0.0%, 2026-02-17)

Insider purchases and sales in Q2 2024

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
101Q3 22: 0 buyingQ3 22: 0 sellingQ4 22: 0 buyingQ4 22: 0 sellingQ4 22Q1 23: 0 buyingQ1 23: 0 sellingQ2 23: 0 buyingQ2 23: 0 sellingQ2 23Q3 23: 0 buyingQ3 23: 0 sellingQ4 23: 0 buyingQ4 23: 0 sellingQ4 23Q1 24: 0 buyingQ1 24: 0 sellingQ2 24: 1 buyingQ2 24: 0 sellingQ2 24
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q3 20220—0——
Q4 20220—0——
Q1 20230—0——
Q2 20230—0——
Q3 20230—0——
Q4 20230—0——
Q1 20240—0——
Q2 20241$3.2m0——
DateInsiderTradeSharesPrice ValueTheir holding
2024-04-02 RA Capital Healthcare Fund LP +4 10% owner · See footnotes Bought 312,500 $16.00 $5.0m312.5k shares new
2024-04-02 ARCH Venture Fund IX, L.P. +7 10% owner · See footnotes Bought 200,000 $16.00 $3.2m200.0k shares +20%
2024-04-02 CRANDELL KEITH +3 10% owner · See footnotes Bought 200,000 $16.00 $3.2m200.0k shares +20%
2024-04-02 Burow Kristina Director · See footnotes Bought 200,000 $16.00 $3.2m200.0k shares +20%

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 2024

#ManagerLocationShares Value% of their portfolioChangeShares change
1 FMR LLC 0.00% of their portfolio BOSTON, MA 3,338,1803.3m $12.9m $12.9m 0.00% Added +74.9k +74,912
2 RA CAPITAL MANAGEMENT, L.P. 0.11% of their portfolio BOSTON, MA 2,180,6312.2m $8.4m $8.4m 0.11% Unchanged
3 Nextech Invest Ltd. 0.80% of their portfolio Zurich, V8 1,228,0691.2m $4.8m $4.8m 0.80% Unchanged
4 Redmile Group, LLC 0.24% of their portfolio LARKSPUR, CA 1,034,5831.0m $4.0m $4.0m 0.24% Reduced -79.5k -79,451
5 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 948,402948.4k $3.6m $3.6m 0.00% Reduced -223.6k -223,571
6 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 718,527718.5k $2.7m $2.7m 0.00% Reduced -136.3k -136,277
7 Boxer Capital, LLC 0.14% of their portfolio San Diego, CA 711,329711.3k $2.8m $2.8m 0.14% Unchanged
8 SECTORAL ASSET MANAGEMENT INC 1.07% of their portfolio MONTREAL, A8 682,274682.3k $2.6m $2.6m 1.07% Reduced -173.6k -173,601
9 BlackRock Inc. 0.00% of their portfolio New York, NY 517,094517.1k $2.0m $2.0m 0.00% Added +367.1k +367,094
10 Ensign Peak Advisors, Inc 0.00% of their portfolio SALT LAKE CITY, UT 364,686364.7k $1.4m $1.4m 0.00% Reduced -10.3k -10,314
11 Alyeska Investment Group, L.P. 0.01% of their portfolio CHICAGO, IL 300,000300.0k $1.2m $1.2m 0.01% Added +50.0k +50,000
12 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 234,663234.7k $908.1k $908.1k 0.00% Added +111.3k +111,313
13 ExodusPoint Capital Management, LP 0.01% of their portfolio NEW YORK, NY 215,567215.6k $834.0k $834.0k 0.01% Added +115.6k +115,567
14 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 186,932186.9k $723.4k $723.4k 0.00% New
15 Sio Capital Management, LLC 0.24% of their portfolio NEW YORK, NY 162,058162.1k $627.2k $627.2k 0.24% Added +19.1k +19,058
16 NORGES BANK 0.00% of their portfolio OSLO, Q8 157,211157.2k $608.4k $608.4k 0.00% Added +87.2k +87,211
17 PFM Health Sciences, LP 0.03% of their portfolio SAN FRANCISCO, CA 140,513140.5k $543.8k $543.8k 0.03% Unchanged
18 Logos Global Management LP 0.03% of their portfolio San Francisco, CA 117,806117.8k $433.1k $433.1k 0.03% Reduced -82.2k -82,194
19 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 110,634110.6k $428.2k $428.2k 0.00% New
20 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 93,72393.7k $362.7k $362.7k 0.00% Added +33.7k +33,723
21 Altium Capital Management LLC 0.13% of their portfolio NEW YORK, NY 83,14983.1k $321.8k $321.8k 0.13% Reduced -116.9k -116,851
22 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 45,38345.4k $175.6k $175.6k 0.00% New
23 Walleye Capital LLC 0.00% of their portfolio NEW YORK, NY 40,53940.5k $156.9k $156.9k 0.00% New
24 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 31,25031.2k $120.9k $120.9k 0.00% Unchanged
25 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 28,61628.6k $110.7k $110.7k 0.00% Added +11.6k +11,616
26 Ovata Capital Management Ltd 0.05% of their portfolio HONG KONG, K3 25,00025.0k $96.8k $96.8k 0.05% Added +5.0k +5,000
27 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 22,10022.1k $85.5k $85.5k 0.00% New
28 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 21,26521.3k $82.3k $82.3k 0.00% New
29 Point72 (DIFC) Ltd 0.01% of their portfolio DUBAI, C0 20,23820.2k $78.3k $78.3k 0.01% Added +7.6k +7,554
30 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 17,91217.9k $69.3k $69.3k 0.00% New
31 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 17,47617.5k $67.6k $67.6k 0.00% Added +2.5k +2,476
32 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 14,64914.6k $56.7k $56.7k 0.00% New
33 Sandia Investment Management LP 0.04% of their portfolio BOSTON, MA 7,5007.5k $29.0k $29.0k 0.04% Unchanged
34 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 6,2286.2k $24.1k $24.1k 0.00% New
35 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 5,3785.4k $20.8k $20.8k 0.00% New
36 Corebridge Financial, Inc. 0.00% of their portfolio HOUSTON, TX 3,3953.4k $13.2k $13.2k 0.00% First filing
37 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 3,2733.3k $12.7k $12.7k 0.00% New
38 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 2,3172.3k $9.0k $9.0k 0.00% New
39 UBS Group AG 0.00% of their portfolio ZURICH, V8 1,9151.9k $7.4k $7.4k 0.00% New
40 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 1,4061.4k $5.4k $5.4k 0.00% New
41 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 618618 $2.4k $2.4k 0.00% New
42 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 593593 $2.0k $2.0k 0.00% Reduced -24.0k -24,040
43 Cubist Systematic Strategies, LLC 0.00% of their portfolio STAMFORD, CT 520520 $2.0k $2.0k 0.00% New
44 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 500500 $1.9k $1.9k 0.00% New
45 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 457457 $1.8k $1.8k 0.00% New
46 AMALGAMATED BANK 0.00% of their portfolio NEW YORK, NY 218218 $1.0k $1.0k 0.00% New
47 Avior Wealth Management, LLC 0.00% of their portfolio OMAHA, NE 122122 $472 $472 0.00% New
48 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged