# SIONNA THERAPEUTICS INC (SION)

> Institutional ownership reported to the SEC as of Q3 2026, from Form 13F filings. Source: https://holderbook.com/stocks/SION/

- Reporting holders: 2
- Reported value: $8.6K
- 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 |
|---|---|---|---|---|
| [GAMMA Investing LLC](https://holderbook.com/funds/2010235-gamma-investing-llc/) | $4.9K | 925 | 0.0% | 5 |
| [Farther Finance Advisors, LLC](https://holderbook.com/funds/1992825-farther-finance-advisors-llc/) | $3.8K | 716 | 0.0% | 4 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q3 2026 | 2 | $8.6K |
| Q2 2026 | 152 | $2.2B |
| Q1 2026 | 121 | $1.8B |
| Q4 2025 | 101 | $1.8B |
| Q3 2025 | 78 | $1.3B |
| Q2 2025 | 65 | $753.8M |
| Q1 2025 | 47 | $434.1M |