# AMBRX BIOPHARMA INC (AMAM)

> Institutional ownership reported to the SEC as of Q4 2023, from Form 13F filings. Source: https://holderbook.com/stocks/AMAM/

- Reporting holders: 69
- Reported value: $907.6M
- Held through calls: 0.5%
- Held through puts: 0.4%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [WuXi AppTec Co., Ltd.](https://holderbook.com/funds/1832424-wuxi-apptec-co-ltd/) | $14.2B | 1,000,000 | 36.9% | 1 |
| [Darwin Global Management, Ltd.](https://holderbook.com/funds/1839209-darwin-global-management-ltd/) | $237.6M | 16,688,636 | 46.6% | 1 |
| [Cormorant Asset Management, LP](https://holderbook.com/funds/1583977-cormorant-asset-management-lp/) | $159.9M | 11,231,000 | 7.6% | 1 |
| [Paradigm Biocapital Advisors LP](https://holderbook.com/funds/1855655-paradigm-biocapital-advisors-lp/) | $64.1M | 4,352,689 | 3.0% | 1 |
| [D. E. Shaw & Co., Inc.](https://holderbook.com/funds/1009207-d-e-shaw-co-inc/) | $60.4M | 4,240,486 | 0.1% | 1 |
| [Deep Track Capital, LP](https://holderbook.com/funds/1856083-deep-track-capital-lp/) | $52.8M | 3,710,412 | 1.8% | 1 |
| [Nextech Invest Ltd.](https://holderbook.com/funds/1911010-nextech-invest-ltd/) | $44.6M | 3,129,300 | 8.3% | 1 |
| [Balyasny Asset Management L.P.](https://holderbook.com/funds/1218710-balyasny-asset-management-l-p/) | $30.7M | 2,154,700 | 0.1% | 1 |
| [CITADEL ADVISORS LLC](https://holderbook.com/funds/1423053-citadel-advisors-llc/) | $30.5M | 2,042,212 | 0.0% | 1 |
| [Logos Global Management LP](https://holderbook.com/funds/1792126-logos-global-management-lp/) | $29.9M | 2,100,000 | 2.8% | 1 |
| [VR Adviser, LLC](https://holderbook.com/funds/1615982-vr-adviser-llc/) | $29.5M | 2,070,000 | 2.0% | 1 |
| [FMR LLC](https://holderbook.com/funds/315066-fmr-llc/) | $21.0M | 1,474,258 | 0.0% | 1 |
| [VANGUARD GROUP INC](https://holderbook.com/funds/102909-vanguard-group-inc/) | $19.9M | 1,399,642 | 0.0% | 1 |
| [Woodline Partners LP](https://holderbook.com/funds/1784547-woodline-partners-lp/) | $17.9M | 1,255,148 | 0.2% | 1 |
| [PRICE T ROWE ASSOCIATES INC /MD/](https://holderbook.com/funds/80255-price-t-rowe-associates-inc-md/) | $15.4M | 1,084,247 | 0.0% | 1 |
| [BlackRock Inc.](https://holderbook.com/funds/1364742-blackrock-inc/) | $7.1M | 501,604 | 0.0% | 1 |
| [Ghost Tree Capital, LLC](https://holderbook.com/funds/1595851-ghost-tree-capital-llc/) | $6.8M | 475,000 | 2.2% | 1 |
| [MILLENNIUM MANAGEMENT LLC](https://holderbook.com/funds/1273087-millennium-management-llc/) | $6.2M | 432,709 | 0.0% | 1 |
| [GOLDMAN SACHS GROUP INC](https://holderbook.com/funds/886982-goldman-sachs-group-inc/) | $5.7M | 399,648 | 0.0% | 1 |
| [Ally Bridge Group (NY) LLC](https://holderbook.com/funds/1822947-ally-bridge-group-ny-llc/) | $5.5M | 385,383 | 3.3% | 1 |
| [JANE STREET GROUP, LLC](https://holderbook.com/funds/1595888-jane-street-group-llc/) | $4.7M | 295,642 | 0.0% | 1 |
| [FEDERATED HERMES, INC.](https://holderbook.com/funds/1056288-federated-hermes-inc/) | $4.7M | 330,949 | 0.0% | 1 |
| [MACQUARIE GROUP LTD](https://holderbook.com/funds/1418333-macquarie-group-ltd/) | $4.3M | 300,000 | 0.0% | 1 |
| [ORBIMED ADVISORS LLC](https://holderbook.com/funds/1055951-orbimed-advisors-llc/) | $4.2M | 296,000 | 0.1% | 1 |
| [Schonfeld Strategic Advisors LLC](https://holderbook.com/funds/1665241-schonfeld-strategic-advisors-llc/) | $3.8M | 263,743 | 0.0% | 1 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q4 2023 | 69 | $907.6M |
| Q3 2023 | 51 | $590.5M |
| Q2 2023 | 45 | $797.6M |
| Q1 2023 | 33 | $365.8M |
| Q4 2022 | 19 | $41.0M |
| Q3 2022 | 14 | $18.0M |
| Q2 2022 | 13 | $45.4M |
| Q1 2022 | 14 | $70.6M |
| Q4 2021 | 16 | $152.0M |
| Q3 2021 | 15 | $165.3M |
| Q2 2021 | 20 | $266.2M |