ATEA PHARMACEUTICALS INC AVIR
COM · Common Stock · CUSIP 04683R106 · ISIN US04683R1068
- SectorHealth care
- IndustryPharmaceutical Preparations
- 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 ($81.3k this quarter). Holder counts are more reliable. Shares outstanding: 80.2m as of 2026-08-10, 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 ≈ $4.65. Options: 3 managers hold calls ($98.1k notional), 1 hold puts ($1.4k).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 126 |
| Q4 2022 | 132 |
| Q1 2023 | 131 |
| Q2 2023 | 134 |
| Q3 2023 | 120 |
| Q4 2023 | 109 |
| Q1 2024 | 114 |
| Q2 2024 | 106 |
| Q3 2024 | 109 |
| Q4 2024 | 108 |
| Q1 2025 | 105 |
| Q2 2025 | 108 |
| Q3 2025 | 115 |
| Q4 2025 | 111 |
| Q1 2026 | 127 |
| Q2 2026 | 125 |
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 2024 | 52 | 40 |
| Q4 2024 | 48 | 47 |
| Q1 2025 | 44 | 46 |
| Q2 2025 | 49 | 38 |
| Q3 2025 | 49 | 43 |
| Q4 2025 | 40 | 55 |
| Q1 2026 | 61 | 50 |
| Q2 2026 | 64 | 58 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $162.6k | $3.7m | 22.60 |
| Q4 2025 | $10.0k | $0 | 0.00 |
| Q1 2026 | $612.2k | $0 | 0.00 |
| Q2 2026 | $98.1k | $1.4k | 0.01 |
Biggest buyers
| ACADIAN ASSET MANAGEMENT LLC | Added | +452.4k |
| BlackRock, Inc. | Added | +284.6k |
| Quantinno Capital Management LP | Added | +226.4k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +210.7k |
| AQR CAPITAL MANAGEMENT LLC | Added | +201.6k |
| BARCLAYS PLC | Added | +187.7k |
| NORTHERN TRUST CORP | Added | +170.2k |
| WELLINGTON MANAGEMENT GROUP LLP | Added | +149.8k |
| Invesco Ltd. | Added | +133.8k |
| CITADEL ADVISORS LLC | Added | +108.8k |
Biggest sellers
| JANE STREET GROUP, LLC | Sold out | -418.3k |
| TWO SIGMA INVESTMENTS, LP | Reduced | -357.5k |
| Irenic Capital Management LP | Sold out | -301.7k |
| Bain Capital Life Sciences Investors, LLC | Reduced | -285.0k |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | -281.3k |
| Peapod Lane Capital LLC | Sold out | -272.8k |
| SEI INVESTMENTS CO | Reduced | -137.3k |
| Point72 Asset Management, L.P. | Sold out | -119.6k |
| Informed Momentum Co LLC | Sold out | -112.9k |
| BML Capital Management, LLC | Reduced | -106.3k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $52.1k11.2k shares |
| SIMPLEX TRADING, LLC | Added | $25.6k5.5k shares |
| GROUP ONE TRADING LLC | Reduced | $20.5k4.4k shares |
Biggest puts
| SIMPLEX TRADING, LLC | New | $1.4k300 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 |
|---|---|
| FMR LLC 13G · institution +3.4 pts · filed 2026-05-06 | 15.0% |
| Sommadossi Jean-Pierre 13G · exempt (held before listing) filed 2025-05-14 | 10.1% |
| BML Investment Partners, L.P. 13G · passive investor +1.4 pts · filed 2026-02-09 | 9.9% |
| BlackRock, Inc. 13G · institution filed 2025-04-23 | 7.1% |
| TANG CAPITAL MANAGEMENT LLC 13G · passive investor new · filed 2026-10-06 | 6.0% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-26)
Insider purchases and sales since 1 Apr 2026
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 |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 1 | $1.0m | — |
| Q1 2025 | 1 | $81.5k | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 1 | $25.4k | 0 | — | — |
| Q3 2026 | 0 | — | 0 | — | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-05-18 | Murphy Polly A. Director | Bought | $25.4k6.1k 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 2026
| Manager | Shares | Change |
|---|---|---|
| FMR LLC 0.00% of their portfolio | 12.0m $55.8m | Added +53.3k |
| BlackRock, Inc. 0.00% of their portfolio | 8.7m $40.5m | Added +284.6k |
| BML Capital Management, LLC 18.46% of their portfolio | 7.0m $32.3m | Reduced -106.3k |
| TANG CAPITAL MANAGEMENT LLC 1.02% of their portfolio | 4.8m $22.4m | Unchanged |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 3.0m $13.8m | Reduced -281.3k |
| Bain Capital Life Sciences Investors, LLC 0.57% of their portfolio | 2.1m $9.7m | Reduced -285.0k |
| ACADIAN ASSET MANAGEMENT LLC 0.01% of their portfolio | 2.0m $9.5m | Added +452.4k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 2.0m $9.1m | Added +210.7k |
| STATE STREET CORP 0.00% of their portfolio | 1.7m $7.7m | Reduced -42.2k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 1.5m $7.0m | Reduced -357.5k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 1.3m $6.0m | Added +44.0k |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 1.1m $5.3m | Reduced -35.2k |
| Rosalind Advisors, Inc. 1.87% of their portfolio | 1.1m $5.0m | Reduced -101.3k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 945.9k $4.4m | Added +5.8k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 755.2k $3.5m | Added +170.2k |
| MORGAN STANLEY 0.00% of their portfolio | 719.5k $3.3m | Reduced -11.5k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 630.2k $2.9m | Added +72.6k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 610.6k $2.8m | Added +13.9k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 530.9k $2.5m | Reduced -57.6k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 469.8k $2.2m | Reduced -14.9k |
| CM Management, LLC 1.05% of their portfolio | 355.0k $1.7m | Unchanged |
| BARCLAYS PLC 0.00% of their portfolio | 348.7k $1.6m | Added +187.7k |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 345.2k $1.6m | Reduced -34.1k |
| BANQUE PICTET & CIE SA 0.02% of their portfolio | 345.1k $1.6m | Unchanged |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 304.6k $1.4m | Reduced -45.3k |
| Nuveen, LLC 0.00% of their portfolio | 284.3k $1.3m | Added +41.2k |
| Invesco Ltd. 0.00% of their portfolio | 267.1k $1.2m | Added +133.8k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 247.7k $1.2m | Added +201.6k |
| Quantinno Capital Management LP 0.00% of their portfolio | 242.3k $1.1m | Added +226.4k |
| Opaleye Management Inc. 0.10% of their portfolio | 235.0k $1.1m | Reduced -87.6k |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 221.0k $1.0m | Reduced -38.0k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 210.5k $979.0k | Unchanged |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 206.8k $961.6k | Added +149.8k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 189.5k $881.0k | Added +3.6k |
| Auour Investments LLC 0.24% of their portfolio | 177.0k $823.0k | Unchanged |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 170.7k $793.6k | Added +3.4k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 157.2k $731.1k | Added +108.8k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 130.9k $608.7k | Reduced -17.5k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 124.2k $668.3k | Added +2.9k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 118.8k $552.2k | Added +19.0k |
| STRS OHIO 0.00% of their portfolio | 117.7k $547.3k | Added +21.3k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 115.8k $539.0k | Added +9.2k |
| Jump Financial, LLC 0.00% of their portfolio | 102.4k $476.3k | Added +9.2k |
| UBS Group AG 0.00% of their portfolio | 94.5k $439.5k | Reduced -15.4k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 91.1k $423.7k | Added +2.1k |
| Aldebaran Capital, LLC 0.31% of their portfolio | 88.2k $410.0k | Reduced -1.8k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 81.7k $380.0k | Reduced -23.9k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 78.7k $366.1k | Reduced -77.7k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 70.4k $327.4k | Added +4.7k |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.00% of their portfolio | 70.0k $326.0k | Unchanged |
| Susquehanna Portfolio Strategies, LLC 0.00% of their portfolio | 62.1k $288.6k | Added +6.6k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 59.7k $277.7k | Added +32.9k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 54.9k $254.9k | Added +26.9k |
| Rangeley Capital, LLC 0.19% of their portfolio | 43.5k $202.3k | Reduced -3.0k |
| MetLife Investment Management, LLC 0.00% of their portfolio | 39.5k $183.5k | Reduced -312 |
| ALGERT GLOBAL LLC 0.00% of their portfolio | 38.5k $179.1k | New |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P 0.13% of their portfolio | 35.0k $162.8k | Added +2.5k |
| CITIGROUP INC 0.00% of their portfolio | 34.6k $161.0k | Added +29.2k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 32.7k $151.9k | Reduced -1.1k |
| RBF Capital, LLC 0.01% of their portfolio | 30.0k $139.5k | Unchanged |
| Squarepoint Ops LLC 0.00% of their portfolio | 29.3k $136.3k | Reduced -25.8k |
| MERCER GLOBAL ADVISORS INC /ADV 0.00% of their portfolio | 27.9k $129.5k | New |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 25.7k $119.4k | Unchanged |
| JOHNSON INVESTMENT COUNSEL INC 0.00% of their portfolio | 25.6k $119.0k | Added +7.2k |
| Certified Advisory Corp 0.01% of their portfolio | 24.5k $113.9k | Unchanged |
| Creative Planning 0.00% of their portfolio | 23.1k $107.4k | Reduced -28.7k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio | 22.0k $102.3k | Unchanged |
| SEI INVESTMENTS CO 0.00% of their portfolio | 19.0k $88.5k | Reduced -137.3k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 17.7k $82.3k | Reduced -2.5k |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 16.9k $78.8k | Unchanged |
| Engineers Gate Manager LP 0.00% of their portfolio | 16.8k $78.1k | New |
| INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 16.7k $77.4k | Reduced -185 |
| Headlands Technologies LLC 0.01% of their portfolio | 16.6k $77.3k | New |
| Cerity Partners LLC 0.00% of their portfolio | 16.5k $76.6k | New |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 16.3k $76.0k | Unchanged |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 16.2k $75.5k | Added +2.0k |
| Spark Investment Management LLC 0.15% of their portfolio | 16.2k $75.3k | New |
| Graham Capital Management, L.P. 0.00% of their portfolio | 16.1k $75.1k | New |
| BAILARD, INC. 0.00% of their portfolio | 16.1k $74.9k | New |
| RFG Advisory, LLC 0.00% of their portfolio | 14.9k $69.2k | Unchanged |
| Trexquant Investment LP 0.00% of their portfolio | 14.8k $68.6k | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 13.7k $63.8k | Reduced -68.1k |
| China Universal Asset Management Co., Ltd. 0.00% of their portfolio | 12.7k $59.2k | Reduced -1.1k |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 12.2k $56.6k | Added +780 |
| NEUBERGER BERMAN GROUP LLC 0.00% of their portfolio | 12.1k $56.2k | New |
| Sunpointe, LLC 0.02% of their portfolio | 11.9k $55.5k | Unchanged |
| ProShare Advisors LLC 0.00% of their portfolio | 11.9k $55.4k | Reduced -1.7k |
| BLAIR WILLIAM & CO/IL 0.00% of their portfolio | 11.3k $52.7k | Added +1.3k |
| Blue Trust, Inc. 0.00% of their portfolio | 8.7k $40.5k | Unchanged |
| Legal & General Group Plc 0.00% of their portfolio | 7.1k $32.9k | Added +1.1k |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 6.2k $28.8k | Added +2.2k |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 5.9k $27.5k | Unchanged |
| FNY Investment Advisers, LLC 0.01% of their portfolio | 5.0k $23.0k | Unchanged |
| Arax Advisory Partners 0.00% of their portfolio | 4.2k $19.6k | New |
| Versant Capital Management, Inc 0.00% of their portfolio | 4.2k $19.6k | New |
| Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio | 3.6k $16.6k | Reduced -496 |
| Smartleaf Asset Management LLC 0.00% of their portfolio | 3.3k $15.3k | Unchanged |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 3.2k $15.0k | Added +2.9k |
| SIMPLEX TRADING, LLC 0.00% of their portfolio | 2.9k $13.6k | Reduced -3.3k |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 2.8k $12.9k | Reduced -291 |