Nautilus Bio Ownership | Who Owns Nautilus Bio?
Nautilus Bio Ownership Summary
Nautilus Bio is owned by 6.95% institutional investors, 33.21% insiders, and 59.84% retail investors. Ah capital management is the largest institutional shareholder, holding 13.98% of NAUT shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 1.52% of its assets in Nautilus Bio shares.
NAUT Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Nautilus Bio | 6.95% | 33.21% | 59.84% |
| 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 |
|---|---|---|---|
| Ah capital management | 17.65M | 13.98% | $68.50M |
| Perceptive advisors | 12.59M | 9.98% | $48.87M |
| Cercano management | 7.17M | 5.68% | $27.83M |
| Madrona venture group | 6.02M | 4.77% | $5.09M |
| Blackrock | 3.83M | 3.06% | $8.96M |
| Vanguard group | 2.60M | 2.06% | $5.07M |
| Clearstead advisors | 2.33M | 1.85% | $9.04M |
| Comprehensive financial management | 2.21M | 1.75% | $8.57M |
| Amazon com | 1.46M | 1.15% | $5.65M |
| Millennium management | 1.27M | 1.01% | $4.94M |
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 | 5.31% | $68.50M |
| Cercano management | 7.17M | 1.20% | $27.83M |
| Perceptive advisors | 12.59M | 0.96% | $48.87M |
| Tikvah management | 726.89K | 0.87% | $2.82M |
| Hillman | 200.00K | 0.30% | $776.00K |
| Sentinel trust co lba | 750.00K | 0.29% | $2.91M |
| Comprehensive financial management | 2.21M | 0.28% | $8.57M |
| Crown advisors management | 100.00K | 0.26% | $388.00K |
| Amazon com | 1.46M | 0.21% | $5.65M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Clearstead advisors | 2.33M | 0.08% | 2.33M |
| Vanguard fiduciary trust | 305.53K | 0.00% | 305.53K |
| Millennium management | 1.27M | 0.00% | 253.39K |
| Marshall wace, llp | 319.88K | 0.00% | 202.82K |
| Vanguard group | 2.60M | 0.00% | 166.39K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Bain capital life sciences investors | - | - | -1.07M |
| Archpoint investors | - | - | -622.41K |
| Alyeska investment group | - | - | -253.47K |
| Y-intercept (hong kong) | - | - | -224.46K |
| Jane street group | 61.80K | - | -145.03K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Clearstead advisors | 2.33M | 0.08% | 2.33M | $9.04M |
| Vanguard fiduciary trust | 305.53K | 0.00% | 305.53K | $1.19M |
| Crown advisors management | 100.00K | 0.26% | 100.00K | $388.00K |
| Hrt financial lp | 65.25K | 0.00% | 65.25K | $253.00K |
| Brevan howard capital management lp | 60.50K | 0.00% | 60.50K | $234.74K |
Sold Out
| Holder | Change |
|---|---|
| Ifp advisors | -5.00 |
| Tower research capital llc (trc) | -5.00 |
| Capital performance advisors llp | -7.00 |
| True wealth design | -17.00 |
| Srs capital advisors | -148.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 34 | -48.48% | 8,773,885 | -84.95% | 6 | 0.33% | 15 | -48.28% | 6 | -57.14% |
| Dec 31, 2025 | 43 | -33.85% | 24,012,479 | -58.53% | 19 | 0.90% | 18 | 12.50% | 8 | -71.43% |
| 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% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 1.93M | 1.52% | - |
| Vanguard Institutional Extnd Mkt Idx Tr | 527.72K | 0.42% | - |
| Fidelity Small Cap Index | 481.06K | 0.38% | - |
| iShares Biotechnology ETF | 420.49K | 0.33% | - |
| Fidelity Extended Market Index | 265.77K | 0.21% | 17.79K |
| 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 |
|---|---|---|---|---|
| Jun 02, 2026 | AH Equity Partners Bio II, L.L.C. | - | Sell | $10.85M |
| Jun 02, 2026 | AH Equity Partners Bio II, L.L.C. | - | Sell | $902.46K |
| Mar 04, 2026 | Patel Sujal M | CEO, President, and Secretary | Buy | $65.24K |
| Nov 06, 2025 | Suzuki Kentaro | Chief Marketing Officer | Buy | $5.96K |
| Sep 08, 2025 | Patel Sujal M | CEO, President, and Secretary | Buy | $57.03K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | - | 2 |
| 2026 Q1 | 1 | - |
| 2025 Q4 | 1 | - |
| 2025 Q3 | 3 | - |
| 2025 Q2 | 3 | - |
NAUT Ownership FAQ
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