Stocktoria
Spero Therapeutics, Inc. SPRO
Spero Therapeutics, Inc. institutional holders
| Investor | Shares | Value | % of company |
|---|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC | 1,189,235 | $2.8M | 2.01% |
| TWO SIGMA INVESTMENTS, LP | 885,631 | $2.1M | 1.5% |
| CITADEL ADVISORS LLC | 425,658 | $996,040 | 0.72% |
| BlackRock Finance, Inc. | 483,402 | $628,423 | 0.82% |
| Point72 Asset Management, L.P. | 59,668 | $139,623 | 0.1% |
% of company = reported institutional shares ÷ shares outstanding. Based on the latest reports; not every holder reports every quarter.
Computed from company filings · US · as of 2025-12-31. Facts plus Stocktoria's own computed scores — not investment advice.