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 		$1.67M Buy
43,750
+21,200
+94% +$671K ﹤0.01% 1991
2025
Q4 		$492K Buy
22,550
+19,582
+660% +$407K ﹤0.01% 3317
2025
Q3 		$63K Buy
+2,968
New +$66.6K ﹤0.01% 6215
2025
Q2 		– Sell
-12,634
Closed -$370K – 8581
2025
Q1 		$462K Buy
12,634
+12,511
+10,172% +$430K ﹤0.01% 3471
2024
Q4 		$3K Buy
123
+27
+28% +$898 ﹤0.01% 7823
2024
Q3 		$3K Buy
+96
New +$3.7K ﹤0.01% 7805
2024
Q2 		– Sell
-13,667
Closed -$442K – 8729
2024
Q1 		$459K Buy
13,667
+9,216
+207% +$310K ﹤0.01% 3944
2023
Q4 		$148K Buy
4,451
+288
+7% +$9.29K ﹤0.01% 4989
2023
Q3 		$130K Buy
4,163
+3,598
+637% +$113K ﹤0.01% 4819
2023
Q2 		$17K Sell
565
-4,503
-89% -$146K ﹤0.01% 6913
2023
Q1 		$167K Buy
5,068
+3,362
+197% +$110K ﹤0.01% 4533
2022
Q4 		$54K Sell
1,706
-978
-36% -$33.3K ﹤0.01% 5776
2022
Q3 		$95K Sell
2,684
-1,139
-30% -$47.3K ﹤0.01% 5601
2022
Q2 		$157K Sell
3,823
-5,696
-60% -$277K ﹤0.01% 4925
2022
Q1 		$551K Buy
9,519
+9,262
+3,604% +$507K ﹤0.01% 3729
2021
Q4 		$15K Sell
257
-15,590
-98% -$946K ﹤0.01% 8658
2021
Q3 		$950K Hold
15,847
– – ﹤0.01% 3145
2021
Q2 		$950K Sell
15,847
-1,441
-8% -$72.2K ﹤0.01% 3194
2021
Q1 		$815K Buy
17,288
+10,124
+141% +$417K ﹤0.01% 2671
2020
Q4 		$0 Buy
7,164
+1,397
+24% +$46K ﹤0.01% 8298
2020
Q3 		$0 Sell
5,767
-6,982
-55% -$296K ﹤0.01% 7751
2020
Q2 		$578K Buy
12,749
+11,455
+885% +$585K ﹤0.01% 2734
2020
Q1 		$59K Buy
1,294
+775
+149% +$35.1K ﹤0.01% 4958
2019
Q4 		$22K Buy
+519
New +$21.2K ﹤0.01% 5863

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.