Tang Capital Management ANAB Position
Active9-Fund ConvergenceTang Capital Management trimmed their position in AnaptysBio Inc. (ANAB) in Q4 2025, holding $64.6M worth of shares across 1,332,087 shares.
The position was first reported in Q1 2023 and has been tracked across 12 quarterly 13F filings.
ANAB is a convergence signal: 9 specialist biotech funds hold this stock, suggesting high institutional conviction.
Short interest stands at 30.6% of float with 9.8 days to cover, indicating significant bearish positioning against Tang Capital's long thesis.
About AnaptysBio Inc.
AnaptysBio, Inc., a clinical stage biotechnology company, engages in developing therapeutic product candidates for inflammation and immuno-oncology indications. Its products include Imsidolimab, an antibody that inhibits the interleukin-36 receptor (IL-36R) for the treatment of various dermatological inflammatory diseases; Rosnilimab, an anti-PD-1 agonist antibody program designed to augment PD-1 signaling through rosnilimab treatment to suppress T-cell driven human inflammatory diseases; and ANB032, an anti-BTLA modulator antibody applicable to human inflammatory diseases associated with lymphoid and myeloid immune cell dysregulation. The company also focuses on developing various antibody programs that are advanced to preclinical and clinical milestones under its collaborations. It has a collaboration and license agreement with GlaxoSmithKline, Inc. and Bristol-Myers Squibb; and license agreements with United Kingdom Research and Innovation, as well as Millipore Corporation. The company was formerly known as Anaptys Biosciences, Inc. and changed its name to AnaptysBio, Inc. in July 2006. AnaptysBio, Inc. was incorporated in 2005 and is based in San Diego, California.
Full company profile →Short Interest
30.6%
9.8 days to cover
Tang Capital Management ANAB Position History
| Quarter | Action | Shares | Change | Value |
|---|---|---|---|---|
| Q4 2025 | Decreased | 1,332,087 | -1,552 | $64.6M |
| Q3 2025 | Increased | 1,333,639 | +2,760 | $40.8M |
| Q2 2025 | Decreased | 1,330,879 | -214,274 | $29.5M |
| Q1 2025 | Increased | 1,545,153 | +214,274 | $28.7M |
| Q4 2024 | Held | 1,330,879 | — | $17.6M |
| Q3 2024 | Held | 1,330,879 | — | $44.6M |
| Q2 2024 | Held | 1,330,879 | — | $33.4M |
| Q1 2024 | Decreased | 1,330,879 | -619,730 | $30.0M |
| Q4 2023 | Held | 1,950,609 | — | $41.8M |
| Q3 2023 | Held | 1,950,609 | — | $35.0M |
| Q2 2023 | Decreased | 1,950,609 | -81,952 | $39.7M |
| Q1 2023 | New | 2,032,561 | +2,032,561 | $44.2M |
Frequently Asked Questions
Does Tang Capital Management own ANAB?
Yes. As of Q4 2025, Tang Capital Management holds 1,332,087 shares of AnaptysBio Inc. (ANAB) valued at $64.6M. This data comes from their SEC 13F filing.
How many hedge funds own ANAB?
9 specialist biotech hedge funds currently hold ANAB, including EcoR1 Capital, Deep Track Capital, Boxer Capital and 5 more. When 3 or more specialist funds hold the same stock, BiotechEdge flags it as a convergence signal.
When did Tang Capital Management first buy ANAB?
Tang Capital Management's position in ANAB was first reported in Q1 2023. 13F filings are reported with a 45-day delay, so the actual purchase may have occurred earlier in the quarter.
Is Tang Capital Management's ANAB position increasing or decreasing?
Tang Capital Management trimmed their ANAB position in the most recent quarter, reducing by 1,552 shares.
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