Renaissance Technologies
XFOR icon

Renaissance Technologies’s X4 Pharmaceuticals XFOR Stock Holding History

Renaissance Technologies’s Portfolio XFOR Stock Details XFOR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-19,177
Closed -$65.6K – 3827
2025
Q3 		$65.6K Buy
19,177
+1,811
+10% +$4.67K ﹤0.01% 3309
2025
Q2 		$33K Buy
17,366
+16,696
+2,492% +$68.3K ﹤0.01% 3433
2025
Q1 		$4.75K Buy
+670
New +$9.23K ﹤0.01% 3401
2023
Q2 		– Sell
-336
Closed -$9K – 4317
2023
Q1 		$9K Sell
336
-2,824
-89% -$82.8K ﹤0.01% 3894
2022
Q4 		$94K Sell
3,160
-4,913
-61% -$233K ﹤0.01% 3641
2022
Q3 		$414K Buy
8,073
+867
+12% +$30K ﹤0.01% 3040
2022
Q2 		$209K Buy
7,206
+1,436
+25% +$54.6K ﹤0.01% 3634
2022
Q1 		$303K Buy
5,770
+1,194
+26% +$68.5K ﹤0.01% 3470
2021
Q4 		$314K Buy
4,576
+563
+14% +$71.2K ﹤0.01% 3321
2021
Q3 		$637K Sell
4,013
-343
-8% -$56.4K ﹤0.01% 2783
2021
Q2 		$850K Sell
4,356
-845
-16% -$212K ﹤0.01% 2747
2021
Q1 		$1.34M Sell
5,201
-213
-4% -$56K ﹤0.01% 2466
2020
Q4 		$1.04M Buy
5,414
+213
+4% +$41.8K ﹤0.01% 2479
2020
Q3 		$1.06M Buy
5,201
+1,773
+52% +$425K ﹤0.01% 2489
2020
Q2 		$959K Buy
3,428
+1,633
+91% +$447K ﹤0.01% 2561
2020
Q1 		$538K Sell
1,795
-316
-15% -$89.7K ﹤0.01% 2729
2019
Q4 		$678K Buy
+2,111
New +$757K ﹤0.01% 2788

Other funds holding XFOR

EAM
Empery Asset Management New York $83M AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
BCLSI
Bain Capital Life Sciences Investors Boston, Massachusetts $1.11B AUM 171.34% 1-Year Est. Return
PA
Perceptive Advisors New York $5.12B AUM 314.02% 1-Year Est. Return
SVCM
Saturn V Capital Management Austin, Texas $552M AUM 551.78% 1-Year Est. Return
DTC
Deep Track Capital Greenwich, Connecticut $6.12B AUM 144% 1-Year Est. Return
KCM
Kalehua Capital Management Dallas, Texas $141M AUM
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
B
Braidwell Stamford, Connecticut $3B AUM 46.72% 1-Year Est. Return

Renaissance Technologies's XFOR Position: Q4 2025 in Review

Renaissance Technologies sold out of X4 Pharmaceuticals (XFOR) in Q4 2025, closing a stake of 19,177 shares — an estimated $65.6K sold.

Renaissance Technologies first reported a position in XFOR in Q4 2019 and held it in 17 quarters. The position peaked at $1.34M in Q1 2021. 79 funds tracked by Wall St. Rank hold XFOR as of Q4 2025.

  • Renaissance Technologies reported no remaining X4 Pharmaceuticals position as of Q4 2025 after selling out during the quarter.
  • Renaissance Technologies sold 19,177 X4 Pharmaceuticals shares in Q4 2025, an estimated $65.6K.
  • Renaissance Technologies first reported a position in X4 Pharmaceuticals in Q4 2019 and held it in 17 quarters.
  • Renaissance Technologies's X4 Pharmaceuticals position peaked at $1.34M in Q1 2021.
  • 79 funds tracked by Wall St. Rank held X4 Pharmaceuticals as of Q4 2025.

Based on Renaissance Technologies's 13F filing for Q4 2025, filed 12 Feb 2026.