AURA BIOSCIENCES INC AURA
COM · Common Stock · CUSIP 05153U107
- SectorHealth care
- IndustryBiological Products, (No Diagnostic Substances)
- HeadquartersBoston, MA
- FilingsSEC EDGAR
* 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 ($86.5k this quarter). Holder counts are more reliable. Shares outstanding: 62.1m as of 2025-08-08, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $6.26. Options: 3 managers hold calls ($3.8k notional), 1 hold puts ($0).
Trends to Q2 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 43 |
| Q4 2022 | 50 |
| Q1 2023 | 58 |
| Q2 2023 | 60 |
| Q3 2023 | 65 |
| Q4 2023 | 73 |
| Q1 2024 | 79 |
| Q2 2024 | 76 |
| Q3 2024 | 82 |
| Q4 2024 | 95 |
| Q1 2025 | 95 |
| Q2 2025 | 106 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2023 | 32 | 20 |
| Q4 2023 | 50 | 17 |
| Q1 2024 | 47 | 26 |
| Q2 2024 | 44 | 34 |
| Q3 2024 | 39 | 28 |
| Q4 2024 | 54 | 25 |
| Q1 2025 | 45 | 41 |
| Q2 2025 | 58 | 44 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $1.1m | $343.0k | 0.32 |
| Q4 2024 | $15.6k | $254.8k | 16.32 |
| Q1 2025 | $36.2k | $37.5k | 1.04 |
| Q2 2025 | $3.8k | $0 | 0.00 |
Biggest buyers
| Frazier Life Sciences Management, L.P. | New | +5.1m |
| MONTANOVA CAPITAL, LLC | Added | +1.6m |
| Long Focus Capital Management, LLC | Added | +1.3m |
| SAMSARA BIOCAPITAL, LLC | New | +1.0m |
| Nantahala Capital Management, LLC | Added | +850.0k |
| VANGUARD GROUP INC | Added | +525.2k |
| Caligan Partners LP | New | +200.0k |
| UBS Group AG | Added | +137.9k |
| LEVIN CAPITAL STRATEGIES, L.P. | Added | +134.8k |
| FRANKLIN RESOURCES INC | Added | +130.2k |
Biggest sellers
| BlackRock, Inc. | Reduced | -437.4k |
| CITADEL ADVISORS LLC | Reduced | -151.2k |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | -95.6k |
| Regency Capital Management Inc.\DE | Reduced | -83.6k |
| DEUTSCHE BANK AG\ | Sold out | -38.6k |
| ALPS ADVISORS INC | Sold out | -37.2k |
| GSA CAPITAL PARTNERS LLP | Sold out | -31.6k |
| FMR LLC | Reduced | -28.1k |
| PLATINUM INVESTMENT MANAGEMENT LTD | Reduced | -27.0k |
| Dynamic Technology Lab Private Ltd | Sold out | -23.4k |
Biggest calls
| GROUP ONE TRADING LLC | New | $3.8k600 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
| SIMPLEX TRADING, LLC | Reduced | $0100 shares |
Biggest puts
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
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.
| Holder | Stake |
|---|---|
| TCG Crossover GP II, LLC 13G · passive investor new · filed 2026-05-12 | 9.9% |
| Adage Capital Management, L.P. 13G · institution filed 2026-08-12 | 8.4% |
| SUVRETTA CAPITAL MANAGEMENT, LLC 13G · passive investor +1.5 pts · filed 2025-08-13 | 7.6% |
| Frazier Life Sciences Public Fund, L.P. 13G · passive investor -0.7 pts · filed 2026-08-14 | 5.6% |
| ForGrowth III PA B.V. 13G · passive investor new · filed 2026-10-01 | 5.1% |
| BlackRock, Inc. 13G · institution +0.6 pts · filed 2026-10-27 | 5.0% |
Fell to 5% or below in the last year: Long Focus Capital Management, LLC (4.9%, 2026-08-14), Matrix Capital Management Company, LP (0.0%, 2026-05-11), Advent Life Sciences LLP (3.3%, 2026-02-17)
Insider purchases and sales in Q2 2025
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)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 1 | $1.6m | 2 | $225.2k | $136.7k |
| Q1 2024 | 0 | — | 2 | $171.6k | — |
| Q2 2024 | 0 | — | 0 | — | — |
| Q3 2024 | 0 | — | 0 | — | — |
| Q4 2024 | 0 | — | 5 | $891.4k | $603.2k |
| Q1 2025 | 0 | — | 4 | $334.0k | — |
| Q2 2025 | 2 | $343.0k | 3 | $52.1k | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-05-16 | Gibney Anthony S Officer | Bought | $245.0k50.0k shares |
| 2025-05-16 | Johnson David Michael Director | Bought | $98.0k20.0k shares |
| 2025-05-16 | Gibney Anthony S Officer | Sold | $7.8k1.5k shares |
| 2025-04-16 | Kilroy Conor Officer | Sold | $39.3k7.2k shares |
| 2025-04-16 | Elazzouzi Amy Senior Vice President, Finance | Sold | $4.9k897 shares |
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 2025
| Manager | Shares | Change |
|---|---|---|
| Matrix Capital Management Company, LP 19.45% of their portfolio | 6.9m $43.3m | Unchanged |
| Frazier Life Sciences Management, L.P. 1.28% of their portfolio | 5.1m $31.9m | New |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.05% of their portfolio | 4.9m $30.6m | Unchanged |
| Long Focus Capital Management, LLC 1.87% of their portfolio | 4.6m $28.9m | Added +1.3m |
| MONTANOVA CAPITAL, LLC 1.03% of their portfolio | 4.4m $27.4m | Added +1.6m |
| BlackRock, Inc. 0.00% of their portfolio | 3.1m $19.4m | Reduced -437.4k |
| Medicxi Ventures Management (Jersey) Ltd 4.45% of their portfolio | 3.0m $19.0m | Unchanged |
| VANGUARD GROUP INC 0.00% of their portfolio | 2.5m $15.5m | Added +525.2k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 2.3m $14.7m | Added +130.2k |
| Nantahala Capital Management, LLC 0.94% of their portfolio | 2.1m $13.3m | Added +850.0k |
| LEVIN CAPITAL STRATEGIES, L.P. 0.92% of their portfolio | 1.5m $9.4m | Added +134.8k |
| SAMSARA BIOCAPITAL, LLC 1.28% of their portfolio | 1.0m $6.3m | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 930.0k $5.8m | Reduced -95.6k |
| UBS Group AG 0.00% of their portfolio | 891.0k $5.6m | Added +137.9k |
| STATE STREET CORP 0.00% of their portfolio | 856.2k $5.4m | Added +63.2k |
| Regency Capital Management Inc.\DE 2.19% of their portfolio | 665.9k $4.2m | Reduced -83.6k |
| ACORN CAPITAL ADVISORS, LLC 2.44% of their portfolio | 595.7k $3.7m | Added +5.2k |
| B Group, Inc. 3.10% of their portfolio | 572.6k $3.6m | Added +100.0k |
| Decheng Capital LLC 0.82% of their portfolio | 515.6k $3.2m | Unchanged |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 504.8k $3.2m | Reduced -15.0k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 456.2k $2.9m | Added +50.2k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 370.5k $2.3m | Reduced -4.0k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 212.3k $1.3m | Added +90.7k |
| Caligan Partners LP 0.24% of their portfolio | 200.0k $1.3m | New |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 189.5k $1.2m | Added +50.5k |
| MORGAN STANLEY 0.00% of their portfolio | 150.3k $940.8k | Added +50.8k |
| PLATINUM INVESTMENT MANAGEMENT LTD 0.06% of their portfolio | 135.4k $847.6k | Reduced -27.0k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 131.5k $823.5k | Added +28.2k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 124.1k $776.6k | New |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 119.7k $749.0k | Reduced -18.8k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 93.3k $583.9k | Reduced -13.8k |
| Resolute Capital Asset Partners LLC 0.30% of their portfolio | 91.0k $569.7k | New |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 84.6k $529.3k | Added +20.1k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 77.3k $484.0k | Added +72.3k |
| Nuveen, LLC 0.00% of their portfolio | 72.3k $452.8k | Reduced -23.4k |
| TD Asset Management Inc 0.00% of their portfolio | 69.0k $432.1k | Unchanged |
| BARCLAYS PLC 0.00% of their portfolio | 68.6k $429.1k | Added +18.2k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 65.4k $409.4k | Added +1.4k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 60.6k $379.2k | Reduced -1.8k |
| TBH Global Asset Management, LLC 0.08% of their portfolio | 60.3k $377.6k | Unchanged |
| Susquehanna Portfolio Strategies, LLC 0.01% of their portfolio | 56.8k $355.6k | New |
| HRT FINANCIAL LP 0.00% of their portfolio | 56.5k $353.0k | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 52.6k $329.2k | Reduced -4.8k |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 47.0k $294.5k | Reduced -4.6k |
| ExodusPoint Capital Management, LP 0.00% of their portfolio | 43.5k $273.0k | New |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 41.7k $260.8k | Added +17.8k |
| HARBOR CAPITAL ADVISORS, INC. 0.01% of their portfolio | 32.7k $205.0k | Added +7.0k |
| COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio | 31.0k $194.0k | Added +679 |
| Atria Investments, Inc 0.00% of their portfolio | 30.3k $189.7k | New |
| Gallagher Fiduciary Advisors, LLC 0.01% of their portfolio | 30.2k $189.3k | New |
| MetLife Investment Management, LLC 0.00% of their portfolio | 27.3k $171.1k | Unchanged |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 25.6k $160.5k | Reduced -5.7k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 22.7k $142.4k | Reduced -5.5k |
| Quantinno Capital Management LP 0.00% of their portfolio | 21.9k $136.9k | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 21.9k $136.9k | Reduced -4.3k |
| LETKO, BROSSEAU & ASSOCIATES INC 0.00% of their portfolio | 21.2k $132.7k | Unchanged |
| INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 20.6k $128.9k | Reduced -5.2k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 20.5k $128.5k | Reduced -7.2k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 17.6k $110.4k | New |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 16.3k $101.9k | New |
| CITIGROUP INC 0.00% of their portfolio | 14.0k $87.7k | Reduced -18.9k |
| Ascent Group, LLC 0.00% of their portfolio | 14.0k $87.4k | Reduced -7.2k |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 13.6k $85.0k | Reduced -13.6k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 13.5k $84.5k | Added +10.0k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 13.1k $82.0k | Unchanged |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 12.8k $80.3k | Reduced -151.2k |
| China Universal Asset Management Co., Ltd. 0.01% of their portfolio | 12.5k $78.0k | Added +2.4k |
| Invesco Ltd. 0.00% of their portfolio | 12.2k $76.5k | New |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 0.00% of their portfolio | 11.9k $77.8k | Reduced -3.6k |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 11.4k $71.3k | Unchanged |
| ProShare Advisors LLC 0.00% of their portfolio | 10.0k $62.6k | Reduced -2.3k |
| Jain Global LLC 0.00% of their portfolio | 10.0k $62.6k | New |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 6.4k $39.9k | Added +2.1k |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 4.5k $28.4k | Unchanged |
| Legal & General Group Plc 0.00% of their portfolio | 3.7k $23.1k | Reduced -325 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 3.4k $21.0k | Unchanged |
| Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio | 2.4k $15.0k | Added +739 |
| AMALGAMATED BANK 0.00% of their portfolio | 1.6k $10.0k | Unchanged |
| FMR LLC 0.00% of their portfolio | 1.5k $9.7k | Reduced -28.1k |
| GF FUND MANAGEMENT CO. LTD. 0.00% of their portfolio | 1.3k $8.0k | Unchanged |
| CWM, LLC 0.00% of their portfolio | 1.3k $8.0k | Added +485 |
| COMERICA BANK 0.00% of their portfolio | 1.0k $6.6k | New |
| SIGNATUREFD, LLC 0.00% of their portfolio | 863 $5.4k | New |
| Smartleaf Asset Management LLC 0.00% of their portfolio | 834 $5.2k | Added +183 |
| Sterling Capital Management LLC 0.00% of their portfolio | 714 $4.5k | Reduced -86 |
| Versant Capital Management, Inc 0.00% of their portfolio | 659 $4.1k | Reduced -635 |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 634 $4.0k | Added +300 |
| GAMMA Investing LLC 0.00% of their portfolio | 605 $3.8k | Reduced -1.1k |
| EverSource Wealth Advisors, LLC 0.00% of their portfolio | 308 $1.9k | Added +260 |
| Arax Advisory Partners 0.00% of their portfolio | 295 $1.8k | New |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 263 $1.6k | New |
| Allworth Financial LP 0.00% of their portfolio | 261 $1.6k | Added +195 |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 241 $1.5k | Reduced -126 |
| US BANCORP \DE\ 0.00% of their portfolio | 218 $1.4k | New |
| Daiwa Securities Group Inc. 0.00% of their portfolio | 165 $1.0k | Unchanged |
| Parkside Financial Bank & Trust 0.00% of their portfolio | 164 $1.0k | New |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 141 $883 | New |
| Blue Trust, Inc. 0.00% of their portfolio | 86 $538 | New |
| Parallel Advisors, LLC 0.00% of their portfolio | 79 $495 | New |
| ROTHSCHILD INVESTMENT LLC 0.00% of their portfolio | 75 $470 | Added +5 |