# FORTRESS BIOTECH INC (FBIOP)

> Institutional ownership reported to the SEC as of Q2 2026, from Form 13F filings. Source: https://holderbook.com/stocks/FBIOP/

- Reporting holders: 2
- Reported value: $333.8K
- Held through calls: 36.0%
- Held through puts: 64.0%

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 |
|---|---|---|---|---|
| [GROUP ONE TRADING LLC](https://holderbook.com/funds/932540-group-one-trading-llc/) | $213.3K | 0 | 0.0% | 10 |
| [SIMPLEX TRADING, LLC](https://holderbook.com/funds/1488542-simplex-trading-llc/) | $120.6K | 0 | 0.0% | 4 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 2 | $333.8K |
| Q1 2026 | 2 | $686.6K |
| Q4 2025 | 3 | $1.2M |
| Q3 2025 | 3 | $1.7M |
| Q2 2025 | 3 | $155.8K |
| Q1 2025 | 2 | $236.7K |
| Q4 2024 | 2 | $174.0K |
| Q3 2024 | 2 | $100.1K |
| Q2 2024 | 1 | $20.2K |
| Q1 2024 | 2 | $16.6K |
| Q4 2023 | 1 | $10.0K |
| Q2 2023 | 1 | $262.0K |