SPERO THERAPEUTICS INC's ticker is SPRO and the CUSIP is 84833T103. A total of 86 filers reported holding SPERO THERAPEUTICS INC in Q4 2021. The put-call ratio across all filers is 0.92 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2021 | $111,862 | -13.0% | 6,987 | 0.0% | 0.00% | 0.0% |
| Q3 2021 | $128,631 | +31.9% | 6,987 | 0.0% | 0.00% | +100.0% |
| Q2 2021 | $97,539 | +27.8% | 6,987 | +34.8% | 0.00% | 0.0% |
| Q1 2021 | $76,323 | -40.3% | 5,185 | -21.3% | 0.00% | -50.0% |
| Q4 2020 | $127,780 | +80.7% | 6,590 | +26.1% | 0.00% | +100.0% |
| Q2 2020 | $70,721 | – | 5,227 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Atlas Venture Associates IX, LLC | 1,376,968 | $15,849,000 | 16.95% |
| Aquilo Capital Management, LLC | 1,154,356 | $13,287,000 | 4.61% |
| VHCP Management II, LLC | 474,015 | $5,456,000 | 1.72% |
| AWM Investment Company, Inc. | 598,315 | $6,887,000 | 1.32% |
| BVF INC/IL | 939,704 | $10,816,000 | 1.18% |
| Novo Holdings A/S | 465,983 | $5,363,000 | 0.75% |
| DAFNA Capital Management LLC | 70,000 | $806,000 | 0.30% |
| Artal Group S.A. | 540,000 | $6,215,000 | 0.25% |
| Alphabet Inc. | 1,112,473 | $12,805,000 | 0.24% |
| Rock Springs Capital Management LP | 525,000 | $6,043,000 | 0.22% |