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 | ||||
|---|---|---|---|---|---|---|
| Q1 2022 | $87,000 | -45.6% | 10,000 | 0.0% | 0.02% | -45.0% |
| Q4 2021 | $160,000 | -13.0% | 10,000 | 0.0% | 0.04% | -63.3% |
| Q3 2021 | $184,000 | +31.4% | 10,000 | 0.0% | 0.11% | +131.9% |
| Q2 2021 | $140,000 | -4.8% | 10,000 | 0.0% | 0.05% | 0.0% |
| Q1 2021 | $147,000 | -24.2% | 10,000 | 0.0% | 0.05% | -14.5% |
| Q4 2020 | $194,000 | +73.2% | 10,000 | 0.0% | 0.06% | +44.7% |
| Q3 2020 | $112,000 | -15.8% | 10,000 | 0.0% | 0.04% | -20.8% |
| Q2 2020 | $133,000 | – | 10,000 | – | 0.05% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Atlas Venture Associates IX, LLC | 1,353,303 | $1,637,497 | 13.93% |
| Anson Funds Management LP | 4,159,572 | $5,033,082 | 1.01% |
| OUP Management Co., LLC | 249,070 | $301,375 | 0.68% |
| Atlas Venture Life Science Advisors, LLC | 1,013,438 | $1,226,260 | 0.19% |
| Murchinson Ltd. | 862,700 | $1,043,867 | 0.13% |
| Alphabet Inc. | 889,979 | $1,076,874 | 0.07% |
| AWM Investment Company, Inc. | 333,400 | $403,414 | 0.06% |
| DAFNA Capital Management LLC | 125,000 | $151,250 | 0.05% |
| Novo Holdings A/S | 468,902 | $567,371 | 0.04% |
| XTX Topco Ltd | 58,368 | $70,625 | 0.01% |