Bolt Biotherapeutics, Inc.

BOLT • NASDAQ

Bolt Biotherapeutics, Inc. is a biotechnology company in the healthcare sector on NASDAQ, led by William P. Quinn, with a market cap of $10.4M. As of Q3 2025, 42% of shares are held by 24 institutional investors, with Vivo Capital, LLC as the largest holder at 9.17%.

President and Chief Executive OfficerWilliam P. Quinn

Market Cap$10.4M

Biotechnology

Healthcare

Employees100.0

Websiteboltbio.com

Country

United States of America

Overview

Overview of institutional ownership in BOLT as of Q3 2025 with a market cap of $10.2M

All Institutions

Institutions: 24
Value Held: $4.3M
Shares Held: 804.0K
Avg Position: $178.2K
Median Position: $86.7K

Hedge Funds

Hedge Funds: 2
Value Held: $231.2K
Shares Held: 43.5K
Avg Position: $115.6K
Median Position: $115.6K

Ownership Breakdown

Institutional (non-HF)

39.62%

$4.0M

Hedge Funds

2.26%

$231.2K

Retail & Other

58.11%

$5.9M

Based on market cap of $10.2M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in BOLT as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
Vivo Capital, LLC Venture Capital	Jack Bech Nielsen Managing Partner	$936.7K 0.08% of portfolio	9.17% 176.1K shares	Q1 2021 Held for 4y 8m	$1.2B
S Sofinnova Ventures Inc Venture Capital	James Irvin Healy Managing Partner	$732.7K 0.04% of portfolio	7.18% 137.7K shares	Q1 2021 Held for 4y 8m	$1.6B
Pivotal bioVenture Partners Investment Advisor LLC RIA/Wealth	Tiffany Catherine Mcghee CEO	$503.1K 0.29% of portfolio	4.93% 94.6K shares	Q1 2021 Held for 4y 8m	$173.0M
T TANG CAPITAL MANAGEMENT LLC Institution	-	$355.8K 0.01% of portfolio	3.48% 66.9K shares	Q2 2022 Held for 3y 5m	$2.5B
N Nan Fung Group Holdings Ltd Institution	-	$310.4K 0.57% of portfolio	3.04% 58.3K shares	Q2 2021 Held for 4y 5m	$54.3M
Samsara BioCapital, LLC Venture Capital	Miran Nasruddin Ahmad CFO	$259.8K 0.03% of portfolio	2.54% 48.8K shares	Q1 2021 Held for 4y 8m	$765.9M
Board of Trustees of The Leland Stanford Junior University Family Office	Anthony Stanley Waskiewicz Managing Partner	$191.4K 0.02% of portfolio	1.87% 36.0K shares	Q2 2021 Held for 4y 5m	$850.7M
VANGUARD GROUP INC Institution	Salim Ramji CEO	$182.1K 0.00% of portfolio	1.78% 34.2K shares	Q1 2021 Held for 4y 8m	$6.69T
PFIZER INC Institution	Albert Bourla CEO	$166.5K 0.04% of portfolio	1.63% 31.3K shares	Q4 2024 Held for 11 months	$437.4M
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant	Peter Fitzhugh Brown CEO	$152.3K 0.00% of portfolio	1.49% 28.6K shares	Q2 2021 Held for 4y 5m	$75.8B

Net Capital Flow

Institutional buying and selling activity for BOLT in Q3 2025

Traded: −$448.4K
Buyers: 6
Sellers: 11
Total Bought: +$306.8K
Total Sold: −$755.2K
Avg Position: $158.4K

Biggest Buyers

Institution	Net Bought	Current Position
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	+$88.5K +16.6K shares	$88.5K 16.6K shares
S Shay Capital LLC Institution	+$84.9K +16.0K shares	$84.9K 16.0K shares
D DRW Securities, LLC Institution	+$65.6K +12.3K shares	$65.6K 12.3K shares
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant	+$54.8K +10.3K shares	$152.3K 28.6K shares
S Squarepoint Ops LLC Hedge Fund•Quant	+$13.0K +2.4K shares	$78.9K 14.8K shares
UBS Group AG Institution	+$16.0 +-180.0 shares	$16.0 3.0 shares

Biggest Sellers

Institution	Net Sold	Current Position
T TANG CAPITAL MANAGEMENT LLC Institution	−$532.0K −100.0K shares	$355.8K 66.9K shares
VANGUARD GROUP INC Institution	−$129.0K −24.3K shares	$182.1K 34.2K shares
A ADAR1 Capital Management, LLC Hedge Fund•Long/Short	−$62.4K −10.8K shares	Sold Off 0 shares
Samsara BioCapital, LLC Venture Capital	−$19.3K −3.6K shares	$259.8K 48.8K shares
B BlackRock, Inc. Institution	−$4.5K −839.0 shares	$51.7K 9.7K shares
Goss Wealth Management LLC RIA/Wealth	−$2.8K −483.0 shares	Sold Off 0 shares
MORGAN STANLEY RIA/Wealth	−$2.4K −451.0 shares	$16.6K 3.1K shares
BANK OF AMERICA CORP /DE/ Institution	−$1.3K −251.0 shares	$165.0 31.0 shares
T Tower Research Capital LLC Institution	−$723.6 −136.0 shares	$1.4K 259.0 shares
FMR LLC Institution	−$705.0 −121.0 shares	Sold Off 0 shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited BOLT in Q3 2025

New Positions: 2
New Value: $150.5K
Exited Positions: 3
Exited Value: $65.9K

New Positions

Institution	Position Value
S Shay Capital LLC Institution	$84.9K 16.0K shares
D DRW Securities, LLC Institution	$65.6K 12.3K shares

Exited Positions

Institution	Previous Position
A ADAR1 Capital Management, LLC Hedge Fund•Long/Short	$62.4K 10.8K shares
Goss Wealth Management LLC RIA/Wealth	$2.8K 483.0 shares
FMR LLC Institution	$705.0 121.0 shares

Options Activity

Institutions with the largest Call and Put options positions in BOLT as of Q3 2025

Call Positions: 0
Call Value: -
Put Positions: 0
Put Value: -

Call Positions

Institution	Position Value
No call positions found

Put Positions

Institution	Position Value
No put positions found

Most Committed Institutions

Institutions with BOLT as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
N Nan Fung Group Holdings Ltd Institution	-	0.57% $310.4K	3.04% 58.3K shares	Q2 2021 Held for 4y 5m	$54.3M
Pivotal bioVenture Partners Investment Advisor LLC RIA/Wealth	Tiffany Catherine Mcghee CEO	0.29% $503.1K	4.93% 94.6K shares	Q1 2021 Held for 4y 8m	$173.0M
Vivo Capital, LLC Venture Capital	Jack Bech Nielsen Managing Partner	0.08% $936.7K	9.17% 176.1K shares	Q1 2021 Held for 4y 8m	$1.2B
S Sofinnova Ventures Inc Venture Capital	James Irvin Healy Managing Partner	0.04% $732.7K	7.18% 137.7K shares	Q1 2021 Held for 4y 8m	$1.6B
PFIZER INC Institution	Albert Bourla CEO	0.04% $166.5K	1.63% 31.3K shares	Q4 2024 Held for 11 months	$437.4M
Samsara BioCapital, LLC Venture Capital	Miran Nasruddin Ahmad CFO	0.03% $259.8K	2.54% 48.8K shares	Q1 2021 Held for 4y 8m	$765.9M
Board of Trustees of The Leland Stanford Junior University Family Office	Anthony Stanley Waskiewicz Managing Partner	0.02% $191.4K	1.87% 36.0K shares	Q2 2021 Held for 4y 5m	$850.7M
S Shay Capital LLC Institution	-	0.02% $84.9K	0.83% 16.0K shares	Q3 2025 Held for 2 months	$548.9M
T TANG CAPITAL MANAGEMENT LLC Institution	-	0.01% $355.8K	3.48% 66.9K shares	Q2 2022 Held for 3y 5m	$2.5B
D DRW Securities, LLC Institution	-	0.00% $65.6K	0.64% 12.3K shares	Q3 2025 Held for 2 months	$1.9B

Hedge Fund Spotlight

Discover hedge funds investing in BOLT

Squarepoint Ops LLC

Hedge Fund • Quant

Portfolio ManagerMichael Gottlieb

Portfolio Value: $46.9B
Positions: 2,529
Last Reported: Q3 2025

Sector Allocation

Position in Bolt Biotherapeutics, Inc.

Market Value: $78.9K
Shares Held: 14.8K
Portfolio Weight: 0.00%
Owned Since: 2024-Q4

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