Who owns AUPH (AUPH)
Which tracked institutional funds hold AUPH, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See AUPH company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
42 tracked funds added or opened AUPH while 54 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
AUPH’s largest tracked holder by dollar value, TANG CAPITAL MANAGEMENT LLC, sizes it at 9.2% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 9.2pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in AUPH divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 257 tracked filers holding AUPH, 142 increased or opened the position and 110 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in AUPH between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 14
- VANGUARD PORTFOLIO MANAGEMENT LLC$19M
- HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND$4M
- Hillsdale Investment Management Inc.$3M
- XTX Topco Ltd$3M
- STIFEL FINANCIAL CORP$2M
- COOKSON PEIRCE & CO INC$2M
Full exits 13
- VANGUARD GROUP INC$23M
- TWO SIGMA ADVISERS, LP$21M
- KOTLER KEVIN$20M
- Neo Ivy Capital Management$4M
- NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO$3M
- Jump Financial, LLC$2M
Largest adds
- TWO SIGMA INVESTMENTS, LP$20M
- AQR CAPITAL MANAGEMENT LLC$6M
- GOLDMAN SACHS GROUP INC$5M
- LSV ASSET MANAGEMENT$5M
- Walleye Capital LLC$4M
- UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$3M
Largest trims
- BlackRock, Inc.$10M
- MILLENNIUM MANAGEMENT LLC$10M
- CITADEL ADVISORS LLC$8M
- JANE STREET GROUP, LLC$8M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$5M
- NEA Management Company, LLC$4M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| TANG CAPITAL MANAGEMENT LLC added | 12,229,500 | $181M | 15.9% | 2026-Q1 |
| BlackRock, Inc. trimmed | 7,845,521 | $116M | 10.2% | 2026-Q1 |
| NEA Management Company, LLC | 3,969,834 | $59M | 5.2% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 3,428,705 | $51M | 4.4% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 3,284,368 | $49M | 4.3% | 2026-Q1 |
| STATE STREET CORP added | 2,527,099 | $37M | 3.3% | 2026-Q1 |
| MORGAN STANLEY added | 2,232,548 | $33M | 2.9% | 2026-Q1 |
| MARSHALL WACE, LLP added | 1,874,597 | $28M | 2.4% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 1,663,835 | $25M | 2.2% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 1,572,983 | $23M | 2.0% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,536,009 | $23M | 2.0% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 1,433,508 | $21M | 1.9% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 1,256,361 | $19M | 1.6% | 2026-Q1 |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 1,097,189 | $16M | 1.4% | 2026-Q1 |
| LSV ASSET MANAGEMENT added | 1,039,576 | $15M | 1.3% | 2026-Q1 |
| NOMURA HOLDINGS INC trimmed | 968,910 | $14M | 1.3% | 2026-Q1 |
| Man Group plc added | 951,412 | $14M | 1.2% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 941,313 | $14M | 1.2% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 930,631 | $14M | 1.2% | 2026-Q1 |
| NORTHERN TRUST CORP added | 824,105 | $12M | 1.1% | 2026-Q1 |
| JUPITER ASSET MANAGEMENT LTD trimmed | 803,419 | $12M | 1.0% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC added | 757,435 | $11M | 1.0% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 748,765 | $11M | 1.0% | 2026-Q1 |
| Nuveen, LLC trimmed | 653,424 | $10M | 0.8% | 2026-Q1 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main added | 615,091 | $9M | 0.8% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC added | 590,610 | $9M | 0.8% | 2026-Q1 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 528,172 | $8M | 0.7% | 2026-Q1 |
| Trexquant Investment LP trimmed | 523,950 | $8M | 0.7% | 2026-Q1 |
| RICE HALL JAMES & ASSOCIATES, LLC trimmed | 487,898 | $7M | 0.6% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 461,866 | $7M | 0.6% | 2026-Q1 |
| Woodline Partners LP | 456,259 | $7M | 0.6% | 2026-Q1 |
| JANE STREET GROUP, LLC trimmed | 452,104 | $7M | 0.6% | 2026-Q1 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC added | 414,019 | $6M | 0.5% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. added | 395,405 | $6M | 0.5% | 2026-Q1 |
| UBS Group AG added | 385,856 | $6M | 0.5% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 371,781 | $6M | 0.5% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC trimmed | 365,236 | $5M | 0.5% | 2026-Q1 |
| Norris Financial Group, LLC trimmed | 342,477 | $5M | 0.4% | 2026-Q1 |
| Bank of New York Mellon Corp added | 335,775 | $5M | 0.4% | 2026-Q1 |
| IFP Advisors, Inc added | 327,791 | $5M | 0.4% | 2026-Q1 |
| Walleye Capital LLC added | 321,567 | $5M | 0.4% | 2026-Q1 |
| Squarepoint Ops LLC trimmed | 319,804 | $5M | 0.4% | 2026-Q1 |
| FMR LLC added | 318,778 | $5M | 0.4% | 2026-Q1 |
| RITHOLTZ WEALTH MANAGEMENT added | 314,426 | $5M | 0.4% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 323,685 | $5M | 0.4% | 2026-Q1 |
| NORDEA INVESTMENT MANAGEMENT AB trimmed | 292,200 | $4M | 0.4% | 2026-Q1 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND new | 275,300 | $4M | 0.4% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN added | 275,154 | $4M | 0.4% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 274,574 | $4M | 0.4% | 2026-Q1 |
| LOS ANGELES CAPITAL MANAGEMENT LLC added | 274,218 | $4M | 0.4% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC added | 265,757 | $4M | 0.3% | 2026-Q1 |
| PDT Partners, LLC | 265,491 | $4M | 0.3% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 233,256 | $3M | 0.3% | 2026-Q1 |
| Swiss National Bank | 220,600 | $3M | 0.3% | 2026-Q1 |
| HRT FINANCIAL LP added | 211,025 | $3M | 0.3% | 2026-Q1 |
| Hillsdale Investment Management Inc. new | 209,900 | $3M | 0.3% | 2026-Q1 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 204,006 | $3M | 0.3% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 193,498 | $3M | 0.3% | 2026-Q1 |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | 187,709 | $3M | 0.2% | 2026-Q1 |
| CWA Asset Management Group, LLC added | 186,333 | $3M | 0.2% | 2026-Q1 |
| SG Americas Securities, LLC added | 180,960 | $3M | 0.2% | 2026-Q1 |
| XTX Topco Ltd added | 177,381 | $3M | 0.2% | 2026-Q1 |
| Gotham Asset Management, LLC added | 168,598 | $2M | 0.2% | 2026-Q1 |
| STIFEL FINANCIAL CORP added | 165,401 | $2M | 0.2% | 2026-Q1 |
| Invesco Ltd. added | 154,112 | $2M | 0.2% | 2026-Q1 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 146,279 | $2M | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 142,584 | $2M | 0.2% | 2026-Q1 |
| Cetera Investment Advisers trimmed | 139,457 | $2M | 0.2% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. added | 128,326 | $2M | 0.2% | 2026-Q1 |
| LAZARD ASSET MANAGEMENT LLC trimmed | 137,355 | $2M | 0.2% | 2026-Q1 |
| FRANKLIN RESOURCES INC trimmed | 132,507 | $2M | 0.2% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 123,179 | $2M | 0.2% | 2026-Q1 |
| COOKSON PEIRCE & CO INC new | 122,483 | $2M | 0.2% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 120,963 | $2M | 0.2% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 117,169 | $2M | 0.2% | 2026-Q1 |
| NAVELLIER & ASSOCIATES INC added | 114,936 | $2M | 0.1% | 2026-Q1 |
| Uniplan Investment Counsel, Inc. trimmed | 114,601 | $2M | 0.1% | 2026-Q1 |
| Aquatic Capital Management LLC added | 113,623 | $2M | 0.1% | 2026-Q1 |
| IRONWOOD INVESTMENT MANAGEMENT LLC trimmed | 113,066 | $2M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 106,169 | $2M | 0.1% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 103,751 | $2M | 0.1% | 2026-Q1 |
| GSA CAPITAL PARTNERS LLP trimmed | 103,467 | $2M | 0.1% | 2026-Q1 |
| Legal & General Group Plc trimmed | 100,273 | $1M | 0.1% | 2026-Q1 |
| Engineers Gate Manager LP trimmed | 93,215 | $1M | 0.1% | 2026-Q1 |
| DIAMOND HILL CAPITAL MANAGEMENT INC | 92,212 | $1M | 0.1% | 2026-Q1 |
| OMERS ADMINISTRATION Corp added | 90,400 | $1M | 0.1% | 2026-Q1 |
| Freestone Grove Partners LP added | 87,989 | $1M | 0.1% | 2026-Q1 |
| Quantinno Capital Management LP added | 87,614 | $1M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 1,449,884 | $23M | 2.0% | 2025-Q4 stale |
| TWO SIGMA ADVISERS, LP added | 1,305,800 | $21M | 1.8% | 2025-Q4 stale |
| KOTLER KEVIN new | 1,224,846 | $20M | 1.7% | 2025-Q4 stale |
| ARMISTICE CAPITAL, LLC trimmed | 1,629,600 | $14M | 1.2% | 2025-Q2 stale |
| READYSTATE ASSET MANAGEMENT LP new | 657,835 | $6M | 0.5% | 2025-Q2 stale |
| Neo Ivy Capital Management new | 229,401 | $4M | 0.3% | 2025-Q4 stale |
| Hood River Capital Management LLC new | 269,312 | $3M | 0.3% | 2025-Q3 stale |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO added | 22,001 | $3M | 0.2% | 2025-Q4 stale |
| SCHRODER INVESTMENT MANAGEMENT GROUP trimmed | 218,743 | $2M | 0.2% | 2025-Q3 stale |
| BALYASNY ASSET MANAGEMENT L.P. added | 217,781 | $2M | 0.2% | 2025-Q3 stale |
| Jump Financial, LLC trimmed | 127,774 | $2M | 0.2% | 2025-Q4 stale |
| VIRGINIA RETIREMENT SYSTEMS ET Al trimmed | 119,668 | $2M | 0.2% | 2025-Q4 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.