Jim Simons
RGNX icon

Jim Simons’s Regenxbio RGNX Stock Holding History

Jim Simons’s Portfolio RGNX Stock Details RGNX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$3.08M Sell
256,686
-48,600
-16% -$403K ﹤0.01% 1727
2026
Q1 		$2.56M Sell
305,286
-27,800
-8% -$292K ﹤0.01% 1747
2025
Q4 		$4.8M Buy
333,086
+23,600
+8% +$294K 0.01% 1330
2025
Q3 		$2.99M Sell
309,486
-425,714
-58% -$3.76M ﹤0.01% 1797
2025
Q2 		$6.04M Buy
735,200
+438,400
+148% +$3.67M 0.01% 1398
2025
Q1 		$2.12M Buy
296,800
+25,500
+9% +$190K ﹤0.01% 1957
2024
Q4 		$2.1M Buy
+271,300
New +$2.55M ﹤0.01% 2019
2024
Q2 		– Sell
-97,500
Closed -$2.05M – 3886
2024
Q1 		$2.05M Buy
97,500
+77,900
+397% +$1.39M ﹤0.01% 2018
2023
Q4 		$352K Buy
+19,600
New +$345K ﹤0.01% 2920
2023
Q3 		– Sell
-27,700
Closed -$554K – 4027
2023
Q2 		$554K Buy
+27,700
New +$534K ﹤0.01% 2823
2021
Q2 		– Sell
-65,779
Closed -$2.24M – 3724
2021
Q1 		$2.24M Buy
+65,779
New +$2.81M ﹤0.01% 2146
2019
Q3 		– Sell
-350,441
Closed -$18M – 3649
2019
Q2 		$18M Sell
350,441
-519,300
-60% -$25.9M 0.02% 1027
2019
Q1 		$49.8M Sell
869,741
-15,202
-2% -$753K 0.05% 510
2018
Q4 		$37.1M Buy
884,943
+598,443
+209% +$35.1M 0.04% 561
2018
Q3 		$21.6M Buy
+286,500
New +$20.6M 0.02% 894
2018
Q2 		– Sell
-134,200
Closed -$4.01M – 3479
2018
Q1 		$4.01M Buy
+134,200
New +$3.91M ﹤0.01% 1956

Other funds holding RGNX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Redmile Group
Redmile Group San Francisco, California $1.49B AUM 208.7% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Marshall Wace
Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return

Jim Simons's RGNX Position: Q2 2026 in Review

Jim Simons reduced its Regenxbio (RGNX) stake by 16% in Q2 2026, selling an estimated $403K and leaving 256,686 shares worth $3.08M. The position accounts for ﹤0.01% of the portfolio, ranked #1727.

Jim Simons first reported a position in RGNX in Q1 2018 and has held it in 16 quarters since. The position peaked at $49.8M in Q1 2019. 165 funds tracked by Wall St. Rank hold RGNX as of Q2 2026.

  • Jim Simons held 256,686 shares of Regenxbio worth $3.08M as of Q2 2026.
  • Jim Simons sold 48,600 Regenxbio shares in Q2 2026, an estimated $403K.
  • Regenxbio made up ﹤0.01% of Jim Simons's portfolio in Q2 2026, its #1727 holding.
  • Jim Simons first reported a position in Regenxbio in Q1 2018 and has held it in 16 quarters since.
  • Jim Simons's Regenxbio position peaked at $49.8M in Q1 2019.
  • 165 funds tracked by Wall St. Rank held Regenxbio as of Q2 2026.

Based on Renaissance Technologies's 13F filing for Q2 2026, filed 13 Aug 2026.