Spero Therapeutics, Inc. SPRO
1.04 USD 0.00 (+0.00%)
At closeNov 3, 2026, 4:00 PM EST
1.04 0.00 0.00%
After hours · Nov 3, 4:00 PM ET
1.03 Day range 1.06
1.03 52-week range 3.08
- YTD
- -55.36%
- 1 year
- -56.30%
Held by funds
11 US ETFs and mutual funds hold SPRO · largest positions
Ownership
Held by insiders 20.13%
Held by institutions 23.05%
Float held by institutions 28.86%
Institutions 56
Top institutional holders
| Holder | % held | Shares | Value | Reported |
|---|---|---|---|---|
| Anson Funds Management LP | 6.88% | 3,750,450 | 3.46M | Sep 29, 2024 |
| Vanguard Group Inc | 3.23% | 1,763,620 | 1.63M | Sep 29, 2024 |
| Acadian Asset Management. LLC | 1.97% | 1,071,860 | 989.11K | Sep 29, 2024 |
| Renaissance Technologies, LLC | 1.79% | 974,653 | 899.41K | Sep 29, 2024 |
| Alphabet Inc. | 1.63% | 889,979 | 821.27K | Sep 29, 2024 |
| Adar1 Capital Management, LLC | 1.36% | 743,459 | 686.06K | Sep 29, 2024 |
Top mutual fund holders
| Holder | % held | Shares | Value | Reported |
|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 2.14% | 1,166,116 | 1.08M | Sep 29, 2024 |
| Vanguard Extended Market Index Fund | 1.08% | 587,342 | 542.00K | Sep 29, 2024 |
| Fidelity Extended Market Index Fund | 0.46% | 251,019 | 231.64K | Oct 30, 2024 |
| Bridgeway Funds Inc-Ultra Small Company Market Fund | 0.25% | 134,800 | 124.39K | Sep 29, 2024 |
| iShares Micro Cap ETF | 0.20% | 107,490 | 99.19K | Oct 30, 2024 |
| Fidelity Total Market Index Fund | 0.13% | 68,177 | 62.91K | Oct 30, 2024 |
Insiders
| Insider | Relation | Latest transaction | Date | Shares held |
|---|---|---|---|---|
| DESHPANDE MILIND S | Director | Stock Award(Grant) | May 28, 2024 | 71,454 |
| JACKSON SCOTT THOMAS | Director | Stock Award(Grant) | May 28, 2024 | 55,000 |
| KEUTZER TIMOTHY | Chief Operating Officer | Sale | Aug 26, 2024 | 531,837 |
| MAHADEVIA ANKIT | Director | Sale | Aug 26, 2024 | 759,085 |
| POTTAGE JOHN C JR | Director | Stock Award(Grant) | May 28, 2024 | 55,000 |
| RAJAVELU ESTHER | Chief Financial Officer | Sale | Nov 7, 2024 | 379,270 |