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
2026
Q1 		– Sell
-1,258
Closed -$874 – 9015
2025
Q4 		$874 Sell
1,258
-5,539
-81% -$4.84K ﹤0.01% 8057
2025
Q3 		$7K Buy
6,797
+278
+4% +$325 ﹤0.01% 8077
2025
Q2 		$10K Sell
6,519
-1,926
-23% -$3.28K ﹤0.01% 7292
2025
Q1 		$17K Sell
8,445
-16,734
-66% -$37.3K ﹤0.01% 6689
2024
Q4 		$60K Sell
25,179
-9,331
-27% -$24.8K ﹤0.01% 5681
2024
Q3 		$99K Buy
34,510
+13,979
+68% +$41.8K ﹤0.01% 5236
2024
Q2 		$57K Buy
20,531
+19,167
+1,405% +$47.7K ﹤0.01% 5940
2024
Q1 		$3K Buy
1,364
+1,140
+509% +$4.85K ﹤0.01% 8208
2023
Q4 		$0 Sell
224
-1,553
-87% -$5.99K ﹤0.01% 8734
2023
Q3 		$6K Sell
1,777
-833
-32% -$4.31K ﹤0.01% 7500
2023
Q2 		$14K Buy
2,610
+2,602
+32,525% +$20.2K ﹤0.01% 7076
2023
Q1 		$0 Sell
8
-3,562
-100% -$47.7K ﹤0.01% 8968
2022
Q4 		$32K Buy
3,570
+3,553
+20,900% +$44.5K ﹤0.01% 6365
2022
Q3 		$0 Sell
17
-2,068
-99% -$60.2K ﹤0.01% 9852
2022
Q2 		$54K Buy
+2,085
New +$92.2K ﹤0.01% 6386
2022
Q1 		– Sell
-3,763
Closed -$138K – 10334
2021
Q4 		$185K Buy
+3,763
New +$278K ﹤0.01% 5310
2021
Q2 		– Sell
-979
Closed -$229K – 9999
2021
Q1 		$346K Buy
+979
New +$377K ﹤0.01% 3946

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.