# ORION BIOTECH OPPORTUNTES CO (ORIA)

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

- Reporting holders: 49
- Reported value: $144.8M
- 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 |
|---|---|---|---|---|
| [ARISTEIA CAPITAL LLC](https://holderbook.com/funds/1080171-aristeia-capital-llc/) | $13.4M | 1,306,038 | 0.3% | 3 |
| [Westchester Capital Management, LLC](https://holderbook.com/funds/1512805-westchester-capital-management-llc/) | $9.7M | 951,768 | 0.3% | 2 |
| [GLAZER CAPITAL, LLC](https://holderbook.com/funds/1076809-glazer-capital-llc/) | $8.7M | 850,590 | 0.5% | 5 |
| [MMCAP International Inc. SPC](https://holderbook.com/funds/1304857-mmcap-international-inc-spc/) | $8.2M | 800,000 | 1.6% | 7 |
| [FIR TREE CAPITAL MANAGEMENT LP](https://holderbook.com/funds/1056491-fir-tree-capital-management-lp/) | $8.1M | 792,269 | 0.6% | 7 |
| [HSBC HOLDINGS PLC](https://holderbook.com/funds/873630-hsbc-holdings-plc/) | $7.2M | 707,037 | 0.0% | 4 |
| [683 Capital Management, LLC](https://holderbook.com/funds/1404574-683-capital-management-llc/) | $7.2M | 699,000 | 0.5% | 7 |
| [CANTOR FITZGERALD, L. P.](https://holderbook.com/funds/1024896-cantor-fitzgerald-l-p/) | $6.0M | 589,286 | 0.1% | 5 |
| [Castle Creek Arbitrage, LLC](https://holderbook.com/funds/1326638-castle-creek-arbitrage-llc/) | $5.4M | 530,000 | 0.6% | 1 |
| [Magnetar Financial LLC](https://holderbook.com/funds/1352851-magnetar-financial-llc/) | $5.1M | 500,172 | 0.1% | 4 |
| [P SCHOENFELD ASSET MANAGEMENT LP](https://holderbook.com/funds/1040198-p-schoenfeld-asset-management-lp/) | $5.1M | 500,000 | 0.5% | 5 |
| [HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND](https://holderbook.com/funds/1535845-healthcare-of-ontario-pension-plan-trust-fund/) | $5.1M | 500,000 | 0.0% | 5 |
| [Atalaya Capital Management LP](https://holderbook.com/funds/1812285-atalaya-capital-management-lp/) | $5.1M | 500,000 | 1.6% | 7 |
| [Periscope Capital Inc.](https://holderbook.com/funds/1695320-periscope-capital-inc/) | $4.7M | 458,619 | 0.2% | 6 |
| [Radcliffe Capital Management, L.P.](https://holderbook.com/funds/1218275-radcliffe-capital-management-l-p/) | $4.2M | 412,096 | 0.3% | 7 |
| [Calamos Advisors LLC](https://holderbook.com/funds/1316507-calamos-advisors-llc/) | $3.8M | 375,000 | 0.0% | 3 |
| [JANE STREET GROUP, LLC](https://holderbook.com/funds/1595888-jane-street-group-llc/) | $3.8M | 370,827 | 0.0% | 2 |
| [METEORA CAPITAL, LLC](https://holderbook.com/funds/1905106-meteora-capital-llc/) | $3.7M | 366,183 | 0.4% | 1 |
| [ANGELO GORDON & CO., L.P.](https://holderbook.com/funds/860662-angelo-gordon-co-l-p/) | $3.1M | 300,000 | 0.8% | 7 |
| [UBS OCONNOR LLC](https://holderbook.com/funds/1132716-ubs-oconnor-llc/) | $2.4M | 235,390 | 0.1% | 1 |
| [BOOTHBAY FUND MANAGEMENT, LLC](https://holderbook.com/funds/1549230-boothbay-fund-management-llc/) | $2.1M | 202,553 | 0.0% | 1 |
| [AQR Arbitrage LLC](https://holderbook.com/funds/1167456-aqr-arbitrage-llc/) | $2.0M | 190,800 | 0.1% | 7 |
| [BERKLEY W R CORP](https://holderbook.com/funds/11544-berkley-w-r-corp/) | $1.8M | 173,095 | 0.1% | 7 |
| [RIVERNORTH CAPITAL MANAGEMENT, LLC](https://holderbook.com/funds/1447578-rivernorth-capital-management-llc/) | $1.8M | 172,050 | 0.1% | 7 |
| [PICTON MAHONEY ASSET MANAGEMENT](https://holderbook.com/funds/1539041-picton-mahoney-asset-management/) | $1.5M | 150,000 | 0.1% | 7 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q1 2023 | 49 | $144.8M |
| Q4 2022 | 50 | $148.7M |
| Q3 2022 | 51 | $142.8M |
| Q2 2022 | 47 | $131.5M |
| Q1 2022 | 39 | $124.3M |
| Q4 2021 | 33 | $112.4M |
| Q3 2021 | 26 | $86.2M |