Renaissance Technologies LLC
- SEC CIK
- 0001037389
- Latest filing
- Aug 13, 2026
SPRO holding history
Spero Therapeutics, Inc. in every 13F filed by Renaissance Technologies LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.
SPRO overviewAll 13F holders of SPROFull Q2 2026 holdings
- Shares (Q2 2026)
- 947,904
- Value
- $2.09M
- % of portfolio
- <0.1%
- Quarters held
- 18
- Since Q1 2022
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q2 2026 | 947,904 | $2.09M | <0.1% | −241,331−20.3% | Reduced | Holders |
| Q1 2026 | 1,189,235 | $2.78M | <0.1% | −90,287−7.1% | Reduced | Holders |
| Q4 2025 | 1,279,522 | $2.98M | <0.1% | −173,243−11.9% | Reduced | Holders |
| Q3 2025 | 1,452,765 | $2.73M | <0.1% | +620,600+74.6% | Added | Holders |
| Q2 2025 | 832,165 | $2.41M | <0.1% | −138,742−14.3% | Reduced | Holders |
| Q1 2025 | 970,907 | $699.1K | <0.1% | −134,684−12.2% | Reduced | Holders |
| Q4 2024 | 1,105,591 | $1.14M | <0.1% | +130,938+13.4% | Added | Holders |
| Q3 2024 | 974,653 | $1.31M | <0.1% | −1,299−0.1% | Reduced | Holders |
| Q2 2024 | 975,952 | $1.27M | <0.1% | +121,492+14.2% | Added | Holders |
| Q1 2024 | 854,460 | $1.47M | <0.1% | +306,995+56.1% | Added | Holders |
| Q4 2023 | 547,465 | $805.0K | <0.1% | +300+0.1% | Added | Holders |
| Q3 2023 | 547,165 | $662.0K | <0.1% | −46,266−7.8% | Reduced | Holders |
| Q2 2023 | 593,431 | $860.0K | <0.1% | +183,131+44.6% | Added | Holders |
| Q1 2023 | 410,300 | $595.0K | <0.1% | +67,400+19.7% | Added | Holders |
| Q4 2022 | 342,900 | $593.0K | <0.1% | +128,200+59.7% | Added | Holders |
| Q3 2022 | 214,700 | $429.0K | <0.1% | −724,317−77.1% | Reduced | Holders |
| Q2 2022 | 939,017 | $696.0K | <0.1% | +829,917+760.7% | Added | Holders |
| Q1 2022 | 109,100 | $949.0K | <0.1% | +109,100 | New | Holders |