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 		$550K Buy
+14,400
New +$456K ﹤0.01% 3147
2025
Q4 		– Sell
-3,700
Closed -$79K – 8494
2025
Q3 		$79K Sell
3,700
-2,300
-38% -$51.6K ﹤0.01% 6007
2025
Q2 		$153K Sell
6,000
-2,400
-29% -$70.2K ﹤0.01% 4785
2025
Q1 		$307K Buy
+8,400
New +$289K ﹤0.01% 3895
2024
Q4 		– Sell
-200
Closed -$7K – 8465
2024
Q3 		$7K Sell
200
-3,200
-94% -$123K ﹤0.01% 7395
2024
Q2 		$134K Buy
3,400
+2,900
+580% +$93.8K ﹤0.01% 5051
2024
Q1 		$16K Sell
500
-8,000
-94% -$269K ﹤0.01% 7241
2023
Q4 		$283K Buy
8,500
+5,400
+174% +$174K ﹤0.01% 4285
2023
Q3 		$97K Buy
3,100
+2,900
+1,450% +$91.2K ﹤0.01% 5107
2023
Q2 		$6K Sell
200
-48,900
-100% -$1.58M ﹤0.01% 7754
2023
Q1 		$1.62M Buy
49,100
+37,700
+331% +$1.24M ﹤0.01% 2131
2022
Q4 		$366K Buy
11,400
+10,200
+850% +$347K ﹤0.01% 3519
2022
Q3 		$42K Buy
1,200
+1,100
+1,100% +$45.7K ﹤0.01% 6663
2022
Q2 		$4K Buy
+100
New +$4.86K ﹤0.01% 8924
2021
Q4 		– Sell
-1,600
Closed -$96K – 10430
2021
Q3 		$96K Hold
1,600
– – ﹤0.01% 6660
2021
Q2 		$95K Buy
1,600
+1,426
+820% +$71.4K ﹤0.01% 6796
2021
Q1 		$820K Buy
+174
New +$7.16K ﹤0.01% 2660
2020
Q3 		– Sell
-186
Closed -$843K – 7750
2020
Q2 		$843K Buy
186
+144
+343% +$7.36K ﹤0.01% 2304
2020
Q1 		$191K Buy
42
+15
+56% +$679 ﹤0.01% 3649
2019
Q4 		$116K Sell
27
-150
-85% -$6.11K ﹤0.01% 4359
2019
Q3 		$640K Buy
+177
New +$7.46K ﹤0.01% 2358

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.