# RUBIUS THERAPEUTICS INC (RUBY)

> Institutional ownership reported to the SEC as of Q1 2023, from Form 13F filings. Source: https://holderbook.com/stocks/RUBY/

- Reporting holders: 5
- Reported value: $61.3K
- Held through calls: 0.0%
- Held through puts: 0.0%

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 |
|---|---|---|---|---|
| [Artal Group S.A.](https://holderbook.com/funds/1053906-artal-group-s-a/) | $44.0K | 2,042,666 | 0.0% | 18 |
| [STATE OF MICHIGAN RETIREMENT SYSTEM](https://holderbook.com/funds/762152-state-of-michigan-retirement-system/) | $13.6K | 640,000 | 0.0% | 9 |
| [ACADIAN ASSET MANAGEMENT LLC](https://holderbook.com/funds/916542-acadian-asset-management-llc/) | $2.0K | 179,676 | 0.0% | 4 |
| [Baader Bank Aktiengesellschaft](https://holderbook.com/funds/1542629-baader-bank-aktiengesellschaft/) | $1.2K | 73,420 | 0.0% | 1 |
| [Clarius Group, LLC](https://holderbook.com/funds/1664214-clarius-group-llc/) | $456 | 21,393 | 0.0% | 4 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q1 2023 | 5 | $61.3K |
| Q4 2022 | 39 | $11.2M |
| Q3 2022 | 58 | $29.7M |
| Q2 2022 | 69 | $66.7M |
| Q1 2022 | 118 | $499.2M |
| Q4 2021 | 106 | $866.8M |
| Q3 2021 | 107 | $1.5B |
| Q2 2021 | 111 | $2.1B |
| Q1 2021 | 107 | $2.3B |
| Q4 2020 | 91 | $575.6M |
| Q3 2020 | 84 | $382.4M |
| Q2 2020 | 85 | $462.6M |