Simplex Trading
ATEX icon

Simplex Trading’s Anterix ATEX Stock Holding History

Simplex Trading’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 		$26.7K Sell
700
-8,900
-93% -$282K ﹤0.01% 6507
2025
Q4 		$210K Buy
9,600
+9,000
+1,500% +$187K ﹤0.01% 4186
2025
Q3 		$12K Sell
600
-1,400
-70% -$31.4K ﹤0.01% 7732
2025
Q2 		$51K Sell
2,000
-11,500
-85% -$337K ﹤0.01% 5894
2025
Q1 		$494K Buy
13,500
+13,300
+6,650% +$457K ﹤0.01% 3421
2024
Q4 		$6K Sell
200
-200
-50% -$6.65K ﹤0.01% 7474
2024
Q3 		$15K Hold
400
– – ﹤0.01% 6872
2024
Q2 		$15K Buy
+400
New +$12.9K ﹤0.01% 7108
2024
Q1 		– Sell
-1,100
Closed -$36K – 8812
2023
Q4 		$36K Buy
1,100
+1,000
+1,000% +$32.3K ﹤0.01% 6387
2023
Q3 		$3K Buy
+100
New +$3.15K ﹤0.01% 7852
2022
Q4 		– Sell
-200
Closed -$7K – 9161
2022
Q3 		$7K Sell
200
-100
-33% -$4.15K ﹤0.01% 8489
2022
Q2 		$12K Buy
+300
New +$14.6K ﹤0.01% 8101
2021
Q4 		– Sell
-5,200
Closed -$312K – 10431
2021
Q3 		$312K Buy
5,200
+200
+4% +$11.7K ﹤0.01% 4846
2021
Q2 		$299K Buy
5,000
+4,886
+4,286% +$245K ﹤0.01% 4990
2021
Q1 		$537K Buy
+114
New +$4.69K ﹤0.01% 3273
2020
Q3 		– Sell
-242
Closed -$1.1M – 7752
2020
Q2 		$1.1M Buy
242
+191
+375% +$9.76K ﹤0.01% 2068
2020
Q1 		$232K Buy
51
+38
+292% +$1.72K ﹤0.01% 3429
2019
Q4 		$56K Buy
+13
New +$530 ﹤0.01% 5083

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 $1.93B AUM 21.66% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 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 $481B AUM 30.42% 1-Year Est. Return
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Simplex Trading's ATEX Position: Q1 2026 in Review

Simplex Trading increased its Anterix (ATEX) stake by 94% in Q1 2026, buying an estimated $671K and bringing the position to 43,750 shares worth $1.67M. The position accounts for ﹤0.01% of the portfolio, ranked #1991.

Simplex Trading first reported a position in ATEX in Q4 2019 and has held it in 24 quarters since. 132 funds tracked by Wall St. Rank hold ATEX as of Q1 2026.

  • Simplex Trading held 43,750 shares of Anterix worth $1.67M as of Q1 2026.
  • Simplex Trading bought 21,200 Anterix shares in Q1 2026, an estimated $671K.
  • Anterix made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #1991 holding.
  • Simplex Trading first reported a position in Anterix in Q4 2019 and has held it in 24 quarters since.
  • 132 funds tracked by Wall St. Rank held Anterix as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.