Renaissance Technologies
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Renaissance Technologies’s Mustang Bio MBIO Stock Holding History

Renaissance Technologies’s Portfolio MBIO Stock Details MBIO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-11,800
Closed -$17.9K – 3544
2025
Q3 		$17.9K Buy
+11,800
New +$21K ﹤0.01% 3433
2025
Q1 		– Sell
-1,750
Closed -$15.5K – 3689
2024
Q4 		$15.5K Buy
+1,750
New +$19.3K ﹤0.01% 3498
2024
Q2 		– Sell
-708
Closed -$37K – 3787
2024
Q1 		$37K Sell
708
-86
-11% -$5.46K ﹤0.01% 3527
2023
Q4 		$54K Sell
794
-90
-10% -$7.14K ﹤0.01% 3439
2023
Q3 		$91K Sell
884
-4
-0.5% -$776 ﹤0.01% 3271
2023
Q2 		$276K Sell
888
-677
-43% -$170K ﹤0.01% 3162
2023
Q1 		$430K Sell
1,565
-410
-21% -$168K ﹤0.01% 2961
2022
Q4 		$585K Sell
1,975
-185
-9% -$63.2K ﹤0.01% 2864
2022
Q3 		$760K Sell
2,160
-899
-29% -$417K ﹤0.01% 2660
2022
Q2 		$1.34M Sell
3,059
-206
-6% -$114K ﹤0.01% 2504
2022
Q1 		$2.47M Buy
3,265
+1,675
+105% +$1.38M ﹤0.01% 2071
2021
Q4 		$1.98M Buy
1,590
+940
+145% +$1.52M ﹤0.01% 2156
2021
Q3 		$1.31M Buy
650
+630
+3,150% +$1.35M ﹤0.01% 2396
2021
Q2 		$50K Sell
20
-1,047
-98% -$2.57M ﹤0.01% 3391
2021
Q1 		$2.66M Buy
1,067
+874
+453% +$2.6M ﹤0.01% 2034
2020
Q4 		$548K Sell
193
-299
-61% -$715K ﹤0.01% 2782
2020
Q3 		$1.16M Sell
492
-516
-51% -$1.27M ﹤0.01% 2440
2020
Q2 		$2.4M Sell
1,008
-93
-8% -$217K ﹤0.01% 2091
2020
Q1 		$2.21M Buy
1,101
+78
+8% +$200K ﹤0.01% 2006
2019
Q4 		$3.13M Buy
1,023
+86
+9% +$197K ﹤0.01% 2105
2019
Q3 		$2.29M Buy
937
+216
+30% +$591K ﹤0.01% 2210
2019
Q2 		$1.99M Buy
721
+599
+491% +$1.71M ﹤0.01% 2333
2019
Q1 		$311K Buy
122
+74
+154% +$210K ﹤0.01% 3081
2018
Q4 		$106K Buy
+48
New +$146K ﹤0.01% 3223

Other funds holding MBIO

KAS
Kestra Advisory Services Austin, Texas $31B AUM 28.39% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
DS
DRW Securities Chicago, Illinois $7.21B AUM 20.54% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
XT
XTX Topco George Town, Cayman Islands $5.75B AUM 30.56% 1-Year Est. Return
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return
GCP
GSA Capital Partners London, United Kingdom $1.61B AUM 28.28% 1-Year Est. Return

Renaissance Technologies's MBIO Position: Q4 2025 in Review

Renaissance Technologies sold out of Mustang Bio (MBIO) in Q4 2025, closing a stake of 11,800 shares — an estimated $17.9K sold.

Renaissance Technologies first reported a position in MBIO in Q4 2018 and held it in 24 quarters. The position peaked at $3.13M in Q4 2019. 25 funds tracked by Wall St. Rank hold MBIO as of Q4 2025.

  • Renaissance Technologies reported no remaining Mustang Bio position as of Q4 2025 after selling out during the quarter.
  • Renaissance Technologies sold 11,800 Mustang Bio shares in Q4 2025, an estimated $17.9K.
  • Renaissance Technologies first reported a position in Mustang Bio in Q4 2018 and held it in 24 quarters.
  • Renaissance Technologies's Mustang Bio position peaked at $3.13M in Q4 2019.
  • 25 funds tracked by Wall St. Rank held Mustang Bio as of Q4 2025.

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