# SPERO THERAPEUTICS INC (SPRO)

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

- Reporting holders: 1
- Reported value: $12
- 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 |
|---|---|---|---|---|
| [Farther Finance Advisors, LLC](https://holderbook.com/funds/1992825-farther-finance-advisors-llc/) | $12 | 10 | 0.0% | 4 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q3 2026 | 1 | $12 |
| Q2 2026 | 63 | $48.9M |
| Q1 2026 | 51 | $49.8M |
| Q4 2025 | 57 | $49.8M |
| Q3 2025 | 49 | $21.8M |
| Q2 2025 | 44 | $34.0M |
| Q1 2025 | 38 | $10.9M |
| Q4 2024 | 50 | $16.5M |
| Q3 2024 | 46 | $16.5M |
| Q2 2024 | 50 | $18.1M |
| Q1 2024 | 57 | $23.8M |
| Q4 2023 | 48 | $19.7M |