Bolt Biotherapeutics Ownership | Who Owns Bolt Biotherapeutics?

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Bolt Biotherapeutics Ownership Summary

Bolt Biotherapeutics is owned by 7.86% institutional investors, 7.10% insiders, and 85.03% retail investors. Sofinnova investments is the largest institutional shareholder, holding 7.37% of BOLT shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.46% of its assets in Bolt Biotherapeutics shares.

BOLT Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Bolt Biotherapeutics	7.86%	7.10%	85.03%
Sector	Healthcare Stocks	50.59%	12.40%	37.01%
Industry	Biotech Stocks	49.10%	12.14%	38.76%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Sofinnova investments	137.72K	7.37%	$556.39K
Renaissance	77.22K	4.13%	$311.99K
Vivo capital	72.41K	3.87%	$292.55K
Tang capital management	66.88K	3.49%	$355.80K
Samsara biocapital	48.83K	2.55%	$259.78K
Board of trustees of the leland stanford junior university	35.98K	1.92%	$145.35K
Pfizer	31.30K	1.67%	$137.12K
Lynx1 capital management lp	30.80K	1.65%	$124.43K
Nan fung group	29.25K	1.56%	$118.17K
Geode capital management	28.79K	1.54%	$116.33K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Nano cap new millennium growth fund l p	27.50K	0.10%	$111.10K
Nan fung group	29.25K	0.10%	$118.17K
Pfizer	31.30K	0.06%	$137.12K
Samsara biocapital	48.83K	0.03%	$259.78K
Vivo capital	72.41K	0.02%	$292.55K
Sofinnova investments	137.72K	0.02%	$556.39K
Lynx1 capital management lp	30.80K	0.02%	$124.43K
Board of trustees of the leland stanford junior university	35.98K	0.02%	$145.35K
Tang capital management	66.88K	0.01%	$355.80K
Shay capital	14.90K	0.01%	$60.22K

Top Buyers

Holder	Shares	% Assets	Change
Lynx1 capital management lp	30.80K	0.02%	30.80K
Renaissance	77.22K	0.00%	22.20K
Blackrock	267.07K	-	12.11K
Citadel advisors	10.11K	-	10.11K
Geode capital management	28.79K	-	9.99K

Top Sellers

Holder	Shares	% Assets	Change
Orbimed advisors	-	-	-1.54M
Acuitas investments	-	-	-630.51K
Adage capital partners gp	-	-	-500.00K
Newtyn management	-	-	-468.91K
Marquette asset management	-	-	-113.80K

New Positions

Holder	Shares	% Assets	Change	Value
Lynx1 capital management lp	30.80K	0.02%	30.80K	$124.43K
Citadel advisors	10.11K	-	10.11K	$40.84K
Vanguard fiduciary trust	3.10K	-	3.10K	$12.50K

Sold Out

Holder	Change
Bnp paribas arbitrage, snc	-1.00
Salem investment counselors	-2.00
Qube research	-2.00
Vanguard global advisers	-24.00
Fmr	-121.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	9	-57.14%	147,058	-75.59%	7	0.80%	5	-28.57%	-	-100.00%
Dec 31, 2025	17	-29.17%	550,535	-31.53%	28	1.63%	6	-14.29%	2	-75.00%
Sep 30, 2025	24	4.35%	804,036	-9.28%	41	784.60%	7	250.00%	8	-61.90%
Jun 30, 2025	24	-14.29%	889,879	-95.14%	2	40.64%	2	-80.00%	22	340.00%
Mar 31, 2025	28	-24.32%	18,325,858	-1.84%	47	2.01%	10	-41.18%	5	-

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	47.18K	2.46%	-1.03K
Vanguard US Total Market Shares ETF	861.87K	2.25%	-1.00
Fidelity Extended Market Index	7.51K	0.39%	-9.55K
Vanguard Institutional Extnd Mkt Idx Tr	7.06K	0.37%	-
PGIM US Micro Cap Quant Equity	5.78K	0.30%	-
Fidelity Total Market Index	5.35K	0.28%	-
NT Ext Equity Mkt Idx Fd - L	5.01K	0.26%	-
Fidelity Enhanced Small Cap ETF	90.25K	0.24%	1.69K
Spartan Extended Market Index Pool F	3.28K	0.17%	25.00
Bridgeway Ultra-Small Company Market	60.20K	0.16%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Dec 05, 2025	Quinn William P.	President, CEO and CFO	Buy	$575.88
Dec 05, 2025	Nemec Sarah	Senior VP, Finance and PAO	Buy	$575.88
Jun 06, 2025	Nemec Sarah	Senior VP, Finance and PAO	Buy	$686.50
Jun 06, 2025	Quinn William P.	President, CEO and CFO	Buy	$686.50
Dec 16, 2024	Nemec Sarah	Senior VP, Finance and PAO	Buy	$1.24K

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	-	-
2026 Q1	-	-
2025 Q4	2	-
2025 Q2	2	-
2024 Q4	2	-

BOLT Ownership FAQ

Who Owns Bolt Biotherapeutics?

Bolt Biotherapeutics shareholders are primarily institutional investors at 7.86%, followed by 7.10% insiders and 85.04% retail investors. The average institutional ownership in Bolt Biotherapeutics's industry, Biotech Stocks , is 49.10%, which Bolt Biotherapeutics falls below.

Who owns the most shares of Bolt Biotherapeutics?

Bolt Biotherapeutics’s largest shareholders are Sofinnova investments (137.72K shares, 7.37%), Renaissance (77.22K shares, 4.13%), and Vivo capital (72.41K shares, 3.87%). Together, they hold 15.37% of Bolt Biotherapeutics’s total shares outstanding.

Does Blackrock own Bolt Biotherapeutics?

BlackRock is not among the top 10 institutional shareholders of Bolt Biotherapeutics.

Who is Bolt Biotherapeutics’s biggest shareholder by percentage of total assets invested?

Nano cap new millennium growth fund l p is Bolt Biotherapeutics’s biggest shareholder by percentage of total assets invested, with 0.10% of its assets in 27.5K Bolt Biotherapeutics shares, valued at 111.1K$.

Who is the top mutual fund holder of Bolt Biotherapeutics shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of Bolt Biotherapeutics shares, with 2.46% of its total shares outstanding invested in 47.18K Bolt Biotherapeutics shares.

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