Nautilus Bio Ownership | Who Owns Nautilus Bio?

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Nautilus Bio Ownership Summary

Nautilus Bio is owned by 20.37% institutional investors, 33.50% insiders, and 46.12% retail investors. Ah capital management is the largest institutional shareholder, holding 13.99% of NAUT shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 1.35% of its assets in Nautilus Bio shares.

NAUT Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Nautilus Bio	20.37%	33.50%	46.12%
Sector	Healthcare Stocks	42.54%	10.83%	46.63%
Industry	Biotech Stocks	45.22%	10.75%	44.04%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Ah capital management	17.65M	13.99%	$14.92M
Perceptive advisors	12.59M	9.98%	$10.64M
Cercano management	7.17M	5.68%	$6.06M
Madrona venture group	6.02M	4.77%	$5.09M
Blackrock	3.83M	3.06%	$8.96M
Vanguard group	2.43M	1.93%	$2.05M
Comprehensive financial management	2.21M	1.75%	$1.87M
Amazon com	1.46M	1.15%	$1.23M
Clarius group	1.21M	0.96%	$1.02M
Renaissance	1.01M	0.80%	$851.37K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Madrona venture group	6.02M	36.76%	$5.09M
Ah capital management	17.65M	1.07%	$14.92M
Perceptive advisors	12.59M	0.31%	$10.64M
Cercano management	7.17M	0.23%	$6.06M
Tikvah management	726.89K	0.18%	$614.15K
Clarius group	1.21M	0.06%	$1.02M
Hillman	200.00K	0.05%	$168.98K
Comprehensive financial management	2.21M	0.05%	$1.87M
Amazon com	1.46M	0.05%	$1.23M
Gsa capital partners llp	259.20K	0.02%	$219.00K

Top Buyers

Holder	Shares	% Assets	Change
Renaissance	1.01M	0.00%	387.76K
Acadian asset management	243.27K	0.00%	174.06K
Clarius group	1.21M	0.06%	149.19K
Crewe advisors	136.05K	0.01%	136.05K
Blackrock	3.83M	0.00%	95.77K

Top Sellers

Holder	Shares	% Assets	Change
Bain capital life sciences investors	-	-	-1.07M
Archpoint investors	-	-	-622.41K
Blackrock funding, inc. /de	201.44K	-	-427.46K
Sentinel trust co lba	-	-	-280.00K
Y-intercept (hong kong)	-	-	-224.46K

New Positions

Holder	Shares	% Assets	Change	Value
Crewe advisors	136.05K	0.01%	136.05K	$114.95K
Ashton thomas private wealth	45.00K	0.00%	45.00K	$38.02K
Susquehanna group, llp	39.00K	-	39.00K	$65.53K
Virtu financial	19.68K	0.00%	19.68K	$17.00K
Caprock group	17.09K	0.00%	17.09K	$11.62K

Sold Out

Holder	Change
Ifp advisors	-5.00
Capital performance advisors llp	-7.00
Russell investments group	-178.00
Cibc private wealth group	-200.00
Ronald blue trust	-208.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Sep 30, 2025	51	-25.00%	25,706,577	-56.98%	20	0.91%	12	-65.71%	24	41.18%
Jun 30, 2025	68	-22.73%	59,754,843	-4.81%	47	1.88%	34	3.03%	18	-40.00%
Mar 31, 2025	2	-97.67%	1,144,278	-98.21%	-	0.04%	-	-100.00%	2	-88.24%
Dec 31, 2024	85	2.41%	63,827,969	-0.56%	50	1.94%	40	29.03%	16	33.33%
Sep 30, 2024	83	7.79%	64,190,100	0.30%	51	1.96%	31	-	12	-36.84%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	1.71M	1.35%	-37.33K
Fidelity Small Cap Index	481.06K	0.38%	-
Vanguard Institutional Extnd Mkt Idx Tr	460.36K	0.36%	-209.77K
iShares Biotechnology ETF	420.49K	0.33%	-
Fidelity Extended Market Index	254.46K	0.20%	-2.09K
State St Russell Sm/Mid Cp® Indx NL Cl C	251.64K	0.20%	-
State St Russell Sm/Mid Cp® Indx SL Cl I	251.64K	0.20%	-
Vanguard Russell 2000 ETF	243.67K	0.19%	2.17K
iShares Russell 2000 ETF	199.56K	0.16%	-49.98K
State St Russell Sm Cap® Indx SL Cl I	195.13K	0.15%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Nov 06, 2025	Suzuki Kentaro	Chief Marketing Officer	Buy	$5.96K
Sep 08, 2025	Patel Sujal M	CEO, President, and Secretary	Buy	$57.03K
Sep 05, 2025	Patel Sujal M	CEO, President, and Secretary	Buy	$78.54K
Sep 04, 2025	Murphy Matthew B.	General Counsel	Buy	$12.86K
May 29, 2025	Mowry Anna	CFO and Treasurer	Buy	$11.49K

Insider Transactions Trends

Date	Buy	Sell
2025 Q3	3	-
2025 Q2	3	-
2025 Q1	2	-
2024 Q3	-	2
2024 Q2	-	-

NAUT Ownership FAQ

Who Owns Nautilus Bio?

Nautilus Bio shareholders are primarily institutional investors at 20.37%, followed by 33.50% insiders and 46.13% retail investors. The average institutional ownership in Nautilus Bio's industry, Biotech Stocks , is 45.22%, which Nautilus Bio falls below.

Who owns the most shares of Nautilus Bio?

Nautilus Bio’s largest shareholders are Ah capital management (17.65M shares, 13.99%), Perceptive advisors (12.59M shares, 9.98%), and Cercano management (7.17M shares, 5.68%). Together, they hold 29.66% of Nautilus Bio’s total shares outstanding.

Does Blackrock own Nautilus Bio?

Yes, BlackRock owns 3.06% of Nautilus Bio, totaling 3.83M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 8.96M$. In the last quarter, BlackRock increased its holdings by 95.77K shares, a 2.57% change.

Who is Nautilus Bio’s biggest shareholder by percentage of total assets invested?

Madrona venture group is Nautilus Bio’s biggest shareholder by percentage of total assets invested, with 36.76% of its assets in 6.02M Nautilus Bio shares, valued at 5.09M$.

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

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of Nautilus Bio shares, with 1.35% of its total shares outstanding invested in 1.71M Nautilus Bio shares.

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