Ken Griffin
ATEX icon

Ken Griffin’s Anterix ATEX Stock Holding History

Ken Griffin’s Portfolio ATEX Stock Details ATEX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$626K Buy
16,400
+4,400
+37% +$139K ﹤0.01% 8752
2025
Q4 		$262K Buy
+12,000
New +$249K ﹤0.01% 10435
2025
Q3 		– Sell
-13,700
Closed -$351K – 12719
2025
Q2 		$351K Buy
13,700
+4,700
+52% +$138K ﹤0.01% 9437
2025
Q1 		$329K Buy
9,000
+5,000
+125% +$172K ﹤0.01% 9379
2024
Q4 		$123K Buy
4,000
+1,500
+60% +$49.9K ﹤0.01% 11151
2024
Q3 		$94.2K Sell
2,500
-11,400
-82% -$439K ﹤0.01% 11199
2024
Q2 		$550K Buy
13,900
+11,300
+435% +$366K ﹤0.01% 7860
2024
Q1 		$87.4K Sell
2,600
-600
-19% -$20.2K ﹤0.01% 11533
2023
Q4 		$107K Sell
3,200
-21,700
-87% -$700K ﹤0.01% 10846
2023
Q3 		$781K Buy
24,900
+12,500
+101% +$393K ﹤0.01% 7092
2023
Q2 		$393K Buy
12,400
+10,600
+589% +$343K ﹤0.01% 8450
2023
Q1 		$59.5K Sell
1,800
-2,000
-53% -$65.5K ﹤0.01% 11942
2022
Q4 		$122K Buy
+3,800
New +$129K ﹤0.01% 10930
2022
Q1 		– Sell
-6,600
Closed -$388K – 13537
2021
Q4 		$388K Sell
6,600
-4,000
-38% -$243K ﹤0.01% 10290
2021
Q3 		$643K Sell
10,600
-22,800
-68% -$1.34M ﹤0.01% 9270
2021
Q2 		$2M Sell
33,400
-2,200
-6% -$110K ﹤0.01% 6615
2021
Q1 		$1.68M Buy
35,600
+23,000
+183% +$946K ﹤0.01% 6827
2020
Q4 		$474K Sell
12,600
-800
-6% -$26.4K ﹤0.01% 8236
2020
Q3 		$438K Buy
13,400
+6,300
+89% +$267K ﹤0.01% 7513
2020
Q2 		$322K Sell
7,100
-6,100
-46% -$312K ﹤0.01% 7797
2020
Q1 		$603K Buy
+13,200
New +$597K ﹤0.01% 6158

Other funds holding ATEX

OCAM
Owl Creek Asset Management New York $1.38B AUM 59.67% 1-Year Est. Return
HCL
Heard Capital LLC Chicago, Illinois $2.34B AUM 46.76% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
QF
QVT Financial New York $1.37B AUM 148.1% 1-Year Est. Return
PM
Plustick Management Charlottesville, Virginia $207M AUM 253.94% 1-Year Est. Return
GI
GAMCO Investors Greenwich, Connecticut $10.2B AUM 30.27% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Ken Griffin's ATEX Position: Q1 2026 in Review

Ken Griffin increased its Anterix (ATEX) stake by 49% in Q1 2026, buying an estimated $1.67M and bringing the position to 161,163 shares worth $6.15M. The position accounts for ﹤0.01% of the portfolio, ranked #4008.

Ken Griffin first reported a position in ATEX in Q2 2018 and has held it in 27 quarters since. The position peaked at $9.12M in Q1 2025. 132 funds tracked by Wall St. Rank hold ATEX as of Q1 2026.

  • Ken Griffin held 161,163 shares of Anterix worth $6.15M as of Q1 2026.
  • Ken Griffin bought 52,783 Anterix shares in Q1 2026, an estimated $1.67M.
  • Anterix made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #4008 holding.
  • Ken Griffin first reported a position in Anterix in Q2 2018 and has held it in 27 quarters since.
  • Ken Griffin's Anterix position peaked at $9.12M in Q1 2025.
  • 132 funds tracked by Wall St. Rank held Anterix as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.