# RAYZEBIO INC (RYZB)

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

- Reporting holders: 108
- Reported value: $3.4B
- Held through calls: 0.0%
- Held through puts: 0.1%

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 |
|---|---|---|---|---|
| [VIKING GLOBAL INVESTORS LP](https://holderbook.com/funds/1103804-viking-global-investors-lp/) | $413.0M | 6,642,700 | 1.5% | 2 |
| [venBio Partners LLC](https://holderbook.com/funds/1776382-venbio-partners-llc/) | $320.7M | 5,158,162 | 48.1% | 2 |
| [Versant Venture Management, LLC](https://holderbook.com/funds/1560009-versant-venture-management-llc/) | $320.7M | 5,158,161 | 82.5% | 2 |
| [VR Adviser, LLC](https://holderbook.com/funds/1615982-vr-adviser-llc/) | $250.6M | 4,030,471 | 17.2% | 2 |
| [WELLINGTON MANAGEMENT GROUP LLP](https://holderbook.com/funds/902219-wellington-management-group-llp/) | $215.9M | 3,504,409 | 0.0% | 2 |
| [Sofinnova Investments, Inc.](https://holderbook.com/funds/1631134-sofinnova-investments-inc/) | $150.4M | 2,419,528 | 8.4% | 2 |
| [ORBIMED ADVISORS LLC](https://holderbook.com/funds/1055951-orbimed-advisors-llc/) | $147.0M | 2,365,213 | 3.0% | 2 |
| [Redmile Group, LLC](https://holderbook.com/funds/1425738-redmile-group-llc/) | $115.5M | 1,857,706 | 4.1% | 2 |
| [Samsara BioCapital, LLC](https://holderbook.com/funds/1744967-samsara-biocapital-llc/) | $114.8M | 1,845,948 | 17.9% | 2 |
| [BlackRock Inc.](https://holderbook.com/funds/1364742-blackrock-inc/) | $85.1M | 1,368,838 | 0.0% | 2 |
| [Fairmount Funds Management LLC](https://holderbook.com/funds/1802528-fairmount-funds-management-llc/) | $77.5M | 1,245,929 | 8.2% | 2 |
| [Cormorant Asset Management, LP](https://holderbook.com/funds/1583977-cormorant-asset-management-lp/) | $75.4M | 1,213,478 | 3.6% | 2 |
| [VANGUARD GROUP INC](https://holderbook.com/funds/102909-vanguard-group-inc/) | $72.7M | 1,169,984 | 0.0% | 2 |
| [HHLR ADVISORS, LTD.](https://holderbook.com/funds/1762304-hhlr-advisors-ltd/) | $66.0M | 1,062,383 | 1.3% | 2 |
| [DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C)](https://holderbook.com/funds/1009258-deerfield-management-company-l-p-series-c/) | $62.6M | 1,006,126 | 1.2% | 2 |
| [ALLIANCEBERNSTEIN L.P.](https://holderbook.com/funds/1109448-alliancebernstein-l-p/) | $58.4M | 938,877 | 0.0% | 2 |
| [TCG Crossover Management, LLC](https://holderbook.com/funds/1839948-tcg-crossover-management-llc/) | $54.1M | 869,908 | 6.0% | 2 |
| [ABG-WTT Global Life Science Capital Partners GP Ltd](https://holderbook.com/funds/1832108-abg-wtt-global-life-science-capital-partners-gp-ltd/) | $48.4M | 778,922 | 94.4% | 2 |
| [Sands Capital Ventures, LLC](https://holderbook.com/funds/1846444-sands-capital-ventures-llc/) | $48.4M | 778,922 | 13.5% | 2 |
| [Laurion Capital Management LP](https://holderbook.com/funds/1390202-laurion-capital-management-lp/) | $48.0M | 771,913 | 0.4% | 2 |
| [ALPINE ASSOCIATES MANAGEMENT INC.](https://holderbook.com/funds/1396835-alpine-associates-management-inc/) | $47.4M | 762,900 | 2.4% | 1 |
| [Soleus Capital Management, L.P.](https://holderbook.com/funds/1802630-soleus-capital-management-l-p/) | $46.4M | 746,622 | 5.2% | 2 |
| [PERCEPTIVE ADVISORS LLC](https://holderbook.com/funds/1224962-perceptive-advisors-llc/) | $46.3M | 744,056 | 1.0% | 2 |
| [Logos Global Management LP](https://holderbook.com/funds/1792126-logos-global-management-lp/) | $35.3M | 568,173 | 3.3% | 1 |
| [Balyasny Asset Management L.P.](https://holderbook.com/funds/1218710-balyasny-asset-management-l-p/) | $33.6M | 539,793 | 0.1% | 1 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q4 2023 | 108 | $3.4B |
| Q3 2023 | 68 | $1.2B |