Jane Street
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Jane Street’s Flex FLEX Stock Holding History

Jane Street’s Portfolio FLEX Stock Details FLEX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$133M Buy
822,500
+626,600
+320% +$76M 0.01% 788
2026
Q1 		$12.8M Buy
195,900
+136,000
+227% +$8.7M ﹤0.01% 2239
2025
Q4 		$3.62M Buy
59,900
+29,300
+96% +$1.81M ﹤0.01% 3735
2025
Q3 		$1.77M Buy
30,600
+500
+2% +$26.6K ﹤0.01% 5162
2025
Q2 		$1.5M Buy
30,100
+14,300
+91% +$557K ﹤0.01% 4894
2025
Q1 		$523K Sell
15,800
-23,300
-60% -$913K ﹤0.01% 6774
2024
Q4 		$1.5M Buy
39,100
+29,100
+291% +$1.08M ﹤0.01% 4642
2024
Q3 		$334K Buy
+10,000
New +$308K ﹤0.01% 7843
2024
Q2 		– Sell
-7,200
Closed -$207K – 9613
2024
Q1 		$207K Sell
7,200
-25,312
-78% -$664K ﹤0.01% 8139
2023
Q4 		$746K Buy
+32,512
New +$651K ﹤0.01% 6099
2023
Q3 		– Sell
-51,753
Closed -$1.08M – 8851
2023
Q2 		$1.08M Buy
51,753
+36,625
+242% +$653K ﹤0.01% 5085
2023
Q1 		$262K Sell
15,128
-52,947
-78% -$916K ﹤0.01% 7415
2022
Q4 		$1.1M Sell
68,075
-246,159
-78% -$3.69M ﹤0.01% 4844
2022
Q3 		$3.94M Buy
314,234
+47,507
+18% +$607K ﹤0.01% 2999
2022
Q2 		$2.91M Buy
266,727
+87,715
+49% +$1.09M ﹤0.01% 3504
2022
Q1 		$2.5M Buy
+179,012
New +$2.29M ﹤0.01% 4310
2021
Q4 		– Sell
-164,813
Closed -$2.2M – 10291
2021
Q3 		$2.2M Buy
164,813
+117,041
+245% +$1.57M ﹤0.01% 4288
2021
Q2 		$643K Sell
47,772
-1,725
-3% -$23.4K ﹤0.01% 6768
2021
Q1 		$683K Sell
49,497
-215,638
-81% -$2.97M ﹤0.01% 6215
2020
Q4 		$3.59M Buy
265,135
+195,467
+281% +$2.26M ﹤0.01% 2556
2020
Q3 		$585K Sell
69,668
-259,959
-79% -$2.12M ﹤0.01% 4917
2020
Q2 		$2.55M Buy
329,627
+185,117
+128% +$1.33M ﹤0.01% 2731
2020
Q1 		$912K Buy
+144,510
New +$1.25M ﹤0.01% 2903

Other funds holding FLEX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

Jane Street's FLEX Position: Q2 2026 in Review

Jane Street increased its Flex (FLEX) stake by 214% in Q2 2026, buying an estimated $116M and bringing the position to 1,404,836 shares worth $228M. The position accounts for 0.02% of the portfolio, ranked #525.

Jane Street first reported a position in FLEX in Q3 2013 and has held it in 40 quarters since. 1,120 funds tracked by Wall St. Rank hold FLEX as of Q2 2026.

  • Jane Street held 1,404,836 shares of Flex worth $228M as of Q2 2026.
  • Jane Street bought 956,851 Flex shares in Q2 2026, an estimated $116M.
  • Flex made up 0.02% of Jane Street's portfolio in Q2 2026, its #525 holding.
  • Jane Street first reported a position in Flex in Q3 2013 and has held it in 40 quarters since.
  • 1,120 funds tracked by Wall St. Rank held Flex as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.