Group One Trading
SPRO icon

Group One Trading’s Spero Therapeutics SPRO Stock Holding History

Group One Trading’s Portfolio SPRO Stock Details SPRO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-16,879
Closed -$39.2K – 9099
2025
Q3 		$31.7K Buy
16,879
+8,640
+105% +$19K ﹤0.01% 6319
2025
Q2 		$23.9K Buy
+8,239
New +$11.9K ﹤0.01% 6148
2024
Q1 		– Sell
-4,590
Closed -$7.2K – 7917
2023
Q4 		$6.75K Sell
4,590
-29,600
-87% -$35.3K ﹤0.01% 6389
2023
Q3 		$41.4K Sell
34,190
-57,780
-63% -$80K ﹤0.01% 5279
2023
Q2 		$133K Buy
91,970
+4,866
+6% +$8.33K ﹤0.01% 4325
2023
Q1 		$126K Buy
87,104
+81,363
+1,417% +$136K ﹤0.01% 4087
2022
Q4 		$9.93K Sell
5,741
-49,359
-90% -$92.2K ﹤0.01% 6034
2022
Q3 		$110K Buy
55,100
+30,856
+127% +$30.7K ﹤0.01% 4689
2022
Q2 		$18K Buy
+24,244
New +$70.5K ﹤0.01% 6375
2020
Q4 		– Sell
-4,548
Closed -$70.9K – 6972
2020
Q3 		$51K Buy
4,548
+1,500
+49% +$17.7K ﹤0.01% 4630
2020
Q2 		$41K Buy
+3,048
New +$34.2K ﹤0.01% 4484
2019
Q4 		– Sell
-100
Closed -$1K – 5588
2019
Q3 		$1K Hold
100
– – ﹤0.01% 5007
2019
Q2 		$1K Hold
100
– – ﹤0.01% 4832
2019
Q1 		$1K Hold
100
– – ﹤0.01% 4672
2018
Q4 		$1K Buy
+100
New +$810 ﹤0.01% 4748

Other funds holding SPRO

GP
GSK plc London $599M AUM
P
Pfizer New York $239M AUM 232.47% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
AI
Alphabet Inc Mountain View, California $4.02B AUM 215.74% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
AFM
Anson Funds Management Dallas, Texas $2.29B AUM 370.24% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

Group One Trading's SPRO Position: Q4 2025 in Review

Group One Trading sold out of Spero Therapeutics (SPRO) in Q4 2025, closing a stake of 16,879 shares — an estimated $39.2K sold.

Group One Trading first reported a position in SPRO in Q4 2018 and held it in 15 quarters. The position peaked at $133K in Q2 2023. 56 funds tracked by Wall St. Rank hold SPRO as of Q4 2025.

  • Group One Trading reported no remaining Spero Therapeutics position as of Q4 2025 after selling out during the quarter.
  • Group One Trading sold 16,879 Spero Therapeutics shares in Q4 2025, an estimated $39.2K.
  • Group One Trading first reported a position in Spero Therapeutics in Q4 2018 and held it in 15 quarters.
  • Group One Trading's Spero Therapeutics position peaked at $133K in Q2 2023.
  • 56 funds tracked by Wall St. Rank held Spero Therapeutics as of Q4 2025.

Based on Group One Trading's 13F filing for Q4 2025, filed 12 Feb 2026.