Jim Simons
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Jim Simons’s Grid Dynamics Holdings GDYN Stock Holding History

Jim Simons’s Portfolio GDYN Stock Details GDYN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$188K Sell
33,000
-121,600
-79% -$895K ﹤0.01% 2926
2025
Q4 		$1.4M Sell
154,600
-78,326
-34% -$678K ﹤0.01% 2086
2025
Q3 		$1.8M Sell
232,926
-195,345
-46% -$1.74M ﹤0.01% 2143
2025
Q2 		$4.95M Buy
428,271
+195,071
+84% +$2.57M 0.01% 1533
2025
Q1 		$3.65M Buy
233,200
+11,600
+5% +$232K 0.01% 1617
2024
Q4 		$4.93M Sell
221,600
-2,200
-1% -$38.4K 0.01% 1460
2024
Q3 		$3.13M Sell
223,800
-63,800
-22% -$825K ﹤0.01% 1737
2024
Q2 		$3.02M Buy
287,600
+112,800
+65% +$1.16M 0.01% 1608
2024
Q1 		$2.15M Sell
174,800
-23,000
-12% -$300K ﹤0.01% 1986
2023
Q4 		$2.64M Buy
197,800
+38,000
+24% +$463K ﹤0.01% 1770
2023
Q3 		$1.95M Buy
159,800
+16,806
+12% +$186K ﹤0.01% 1888
2023
Q2 		$1.32M Buy
142,994
+37,194
+35% +$373K ﹤0.01% 2278
2023
Q1 		$1.21M Buy
105,800
+79,600
+304% +$935K ﹤0.01% 2347
2022
Q4 		$294K Sell
26,200
-61,300
-70% -$795K ﹤0.01% 3228
2022
Q3 		$1.64M Buy
87,500
+41,300
+89% +$783K ﹤0.01% 2156
2022
Q2 		$777K Buy
46,200
+18,900
+69% +$309K ﹤0.01% 2873
2022
Q1 		$384K Sell
27,300
-17,714
-39% -$362K ﹤0.01% 3349
2021
Q4 		$1.71M Sell
45,014
-8,286
-16% -$286K ﹤0.01% 2267
2021
Q3 		$1.56M Sell
53,300
-148,100
-74% -$3.62M ﹤0.01% 2280
2021
Q2 		$3.03M Buy
201,400
+91,700
+84% +$1.44M ﹤0.01% 1967
2021
Q1 		$1.75M Buy
109,700
+1,000
+0.9% +$14.4K ﹤0.01% 2309
2020
Q4 		$1.37M Buy
+108,700
New +$1.05M ﹤0.01% 2344
2020
Q3 		– Sell
-68,200
Closed -$471K – 3472
2020
Q2 		$471K Buy
+68,200
New +$559K ﹤0.01% 2902

Other funds holding GDYN

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return
BAMCO Inc
BAMCO Inc New York $33.1B AUM 11.16% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Jim Simons's GDYN Position: Q1 2026 in Review

Jim Simons reduced its Grid Dynamics Holdings (GDYN) stake by 79% in Q1 2026, selling an estimated $895K and leaving 33,000 shares worth $188K. The position accounts for ﹤0.01% of the portfolio, ranked #2926.

Jim Simons first reported a position in GDYN in Q2 2020 and has held it in 23 quarters since. The position peaked at $4.95M in Q2 2025. 196 funds tracked by Wall St. Rank hold GDYN as of Q1 2026.

  • Jim Simons held 33,000 shares of Grid Dynamics Holdings worth $188K as of Q1 2026.
  • Jim Simons sold 121,600 Grid Dynamics Holdings shares in Q1 2026, an estimated $895K.
  • Grid Dynamics Holdings made up ﹤0.01% of Jim Simons's portfolio in Q1 2026, its #2926 holding.
  • Jim Simons first reported a position in Grid Dynamics Holdings in Q2 2020 and has held it in 23 quarters since.
  • Jim Simons's Grid Dynamics Holdings position peaked at $4.95M in Q2 2025.
  • 196 funds tracked by Wall St. Rank held Grid Dynamics Holdings as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.