Simplex Trading
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Simplex Trading’s Aterian ATER Stock Holding History

Simplex Trading’s Portfolio ATER Stock Details ATER Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-22,100
Closed -$23K – 8495
2025
Q3 		$23K Sell
22,100
-5,000
-18% -$5.84K ﹤0.01% 7207
2025
Q2 		$44K Buy
27,100
+10,400
+62% +$17.7K ﹤0.01% 6040
2025
Q1 		$35K Sell
16,700
-9,400
-36% -$20.9K ﹤0.01% 6105
2024
Q4 		$5K Sell
26,100
-100
-0.4% -$266 ﹤0.01% 7570
2024
Q3 		$75K Sell
26,200
-500
-2% -$1.5K ﹤0.01% 5501
2024
Q2 		$75K Buy
26,700
+400
+2% +$995 ﹤0.01% 5668
2024
Q1 		$72K Buy
26,300
+21,833
+489% +$93K ﹤0.01% 5922
2023
Q4 		$18K Sell
4,467
-83
-2% -$320 ﹤0.01% 6983
2023
Q3 		$17K Sell
4,550
-1,708
-27% -$8.84K ﹤0.01% 6747
2023
Q2 		$34K Sell
6,258
-11,275
-64% -$87.7K ﹤0.01% 6207
2023
Q1 		$180K Buy
17,533
+2,316
+15% +$31K ﹤0.01% 4452
2022
Q4 		$140K Sell
15,217
-4,566
-23% -$57.2K ﹤0.01% 4665
2022
Q3 		$294K Sell
19,783
-5,250
-21% -$153K ﹤0.01% 4108
2022
Q2 		$648K Buy
25,033
+5,383
+27% +$238K ﹤0.01% 3142
2022
Q1 		$572K Buy
19,650
+11,425
+139% +$418K ﹤0.01% 3669
2021
Q4 		$405K Sell
8,225
-3,100
-27% -$229K ﹤0.01% 4111
2021
Q3 		$2.04M Buy
11,325
+1,200
+12% +$133K ﹤0.01% 2113
2021
Q2 		$1.78M Buy
10,125
+10,095
+33,650% +$2.36M ﹤0.01% 2320
2021
Q1 		$1.05M Buy
+30
New +$11.6K ﹤0.01% 2340

Other funds holding ATER

Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
XT
XTX Topco George Town, Cayman Islands $5.75B AUM 30.56% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return
VFT
Vanguard Fiduciary Trust Malvern, Pennsylvania $396B AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

Simplex Trading's ATER Position: Q1 2026 in Review

Simplex Trading sold out of Aterian (ATER) in Q1 2026, closing a stake of 1,258 shares — an estimated $874 sold.

Simplex Trading first reported a position in ATER in Q1 2021 and held it in 17 quarters. The position peaked at $346K in Q1 2021. 26 funds tracked by Wall St. Rank hold ATER as of Q1 2026.

  • Simplex Trading reported no remaining Aterian position as of Q1 2026 after selling out during the quarter.
  • Simplex Trading sold 1,258 Aterian shares in Q1 2026, an estimated $874.
  • Simplex Trading first reported a position in Aterian in Q1 2021 and held it in 17 quarters.
  • Simplex Trading's Aterian position peaked at $346K in Q1 2021.
  • 26 funds tracked by Wall St. Rank held Aterian as of Q1 2026.

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