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
-6,700
Closed -$7K – 8496
2025
Q3 		$7K Sell
6,700
-10,100
-60% -$11.8K ﹤0.01% 8078
2025
Q2 		$27K Sell
16,800
-42,900
-72% -$73K ﹤0.01% 6490
2025
Q1 		$125K Buy
59,700
+51,300
+611% +$114K ﹤0.01% 4823
2024
Q4 		$20K Buy
8,400
+500
+6% +$1.33K ﹤0.01% 6669
2024
Q3 		$22K Hold
7,900
– – ﹤0.01% 6587
2024
Q2 		$22K Buy
+7,900
New +$19.7K ﹤0.01% 6792
2023
Q4 		– Sell
-2,492
Closed -$9K – 8735
2023
Q3 		$9K Sell
2,492
-500
-17% -$2.59K ﹤0.01% 7221
2023
Q2 		$16K Buy
2,992
+84
+3% +$654 ﹤0.01% 6957
2023
Q1 		$30K Sell
2,908
-2,617
-47% -$35K ﹤0.01% 6480
2022
Q4 		$51K Sell
5,525
-3,183
-37% -$39.9K ﹤0.01% 5859
2022
Q3 		$129K Sell
8,708
-650
-7% -$18.9K ﹤0.01% 5180
2022
Q2 		$242K Buy
9,358
+6,491
+226% +$287K ﹤0.01% 4382
2022
Q1 		$83K Sell
2,867
-1,441
-33% -$52.8K ﹤0.01% 6406
2021
Q4 		$212K Buy
4,308
+3,200
+289% +$237K ﹤0.01% 5105
2021
Q3 		$199K Buy
1,108
+8
+0.7% +$887 ﹤0.01% 5587
2021
Q2 		$193K Buy
1,100
+1,073
+3,974% +$251K ﹤0.01% 5726
2021
Q1 		$967K Buy
+27
New +$10.4K ﹤0.01% 2440

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.