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 2022
Institutional positions in Spero Therapeutics, Inc. as of Jun 30, 2022. 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
- 79
- −19 vs. Q1 2022
- Shares held
- 21.0M
- +765.5K (+3.8%) vs. Q1 2022
- Total value
- $15.5M
- −$160.1M (−91.2%) vs. Q1 2022
- New holders
- 16
- 20 more added
- Sold out
- 35
- 22 more reduced
2 institutions that held it in Q1 2022 haven't filed for Q2 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2022: 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 2022
Shares, value and share of portfolio for each institution holding Spero Therapeutics, Inc.; share changes are against Q1 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −10,957−100.0% | Sold out |
| California State Teachers Retirement System | 0 | $0 | 0.00% | −10,256−100.0% | Sold out |
| Radnor Capital Management, LLC | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| Allspring Global Investments Holdings, LLC | 0 | $0 | 0.00% | −9,048−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −3,887−100.0% | Sold out |
| Bedel Financial Consulting, Inc. | 0 | $0 | 0.00% | −3,837−100.0% | Sold out |
| Bollard Group LLC | 0 | $0 | 0.00% | −2,215−100.0% | Sold out |
| Ameritas Investment Partners, Inc. | 0 | $0 | 0.00% | −1,713−100.0% | Sold out |
| Patriot Financial Group Insurance Agency, LLC | 0 | $0 | 0.00% | −1,200−100.0% | Sold out |
| Atlas Capital Advisors LLC | 0 | $0 | 0.00% | −727−100.0% | Sold out |
| TCWP LLC | 0 | $0 | 0.00% | −425−100.0% | Sold out |
| Laurel Wealth Advisors LLC | 0 | $0 | 0.00% | −200−100.0% | Sold out |
| Toth Financial Advisory Corp | 0 | $0 | 0.00% | −172−100.0% | Sold out |
| Quadrant Capital Group LLC | 0 | $0 | 0.00% | −106−100.0% | Sold out |
| Parametric Portfolio Associates LLC | – | – | – | – | Not filed |
| Amalgamated Financial Corp. | – | – | – | – | Not filed |