Spero Therapeutics, Inc.
SPRO- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001701108
No open-market purchases or sales by Spero Therapeutics, Inc. insiders were filed in the last 90 days; 59 institutions reported holding it in 13F filings for Q2 2026, worth $47.5M in total; no superinvestor holds it.
13F holders, Q2 2021
Institutional positions in Spero Therapeutics, Inc. as of Jun 30, 2021. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 89
- −6 vs. Q1 2021
- Shares held
- 17.5M
- −1.06M (−5.7%) vs. Q1 2021
- Total value
- $244.2M
- −$28.9M (−10.6%) vs. Q1 2021
- New holders
- 14
- 29 more added
- Sold out
- 20
- 21 more reduced
Compare with Q1 2021: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting SPRO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 59 | $47.5M |
| Q1 2026 | 50 | $48.3M |
| Q4 2025 | 56 | $49.2M |
| Q3 2025 | 47 | $21.3M |
| Q2 2025 | 44 | $32.1M |
| Q1 2025 | 38 | $10.9M |
| Q4 2024 | 50 | $16.1M |
| Q3 2024 | 46 | $16.5M |
| Q2 2024 | 48 | $18.0M |
| Q1 2024 | 54 | $23.7M |
| Q4 2023 | 50 | $19.6M |
| Q3 2023 | 54 | $17.2M |
| Q2 2023 | 56 | $20.8M |
| Q1 2023 | 48 | $20.6M |
| Q4 2022 | 60 | $24.6M |
| Q3 2022 | 69 | $39.7M |
| Q2 2022 | 79 | $15.5M |
| Q1 2022 | 100 | $176.1M |
| Q4 2021 | 84 | $316.7M |
| Q3 2021 | 88 | $338.3M |
| Q2 2021 | 89 | $244.2M |
| Q1 2021 | 95 | $273.1M |
Institutions, Q2 2021
Shares, value and share of portfolio for each institution holding Spero Therapeutics, Inc.; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Federated Hermes, Inc. | 0 | $0 | 0.00% | −9,473−100.0% | Sold out |
| FMR LLC | 0 | $0 | 0.00% | −8,552−100.0% | Sold out |
| DekaBank Deutsche Girozentrale | 0 | $0 | 0.00% | −8,500−100.0% | Sold out |
| Panagora Asset Management Inc | 0 | $0 | 0.00% | −2,109−100.0% | Sold out |
| Pacer Advisors, Inc. | 0 | $0 | 0.00% | −1,608−100.0% | Sold out |
| Bank of Montreal | 0 | $0 | 0.00% | −598−100.0% | Sold out |
| Nisa Investment Advisors, LLC | 0 | $0 | 0.00% | −200−100.0% | Sold out |
| Ellevest, Inc. | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Close Asset Management Ltd | 0 | $0 | 0.00% | −10−100.0% | Sold out |