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
Q2 		$2.64K Buy
+2,000
New +$2.07K ﹤0.01% 8515
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

Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
BCM
Bridgeway Capital Management Houston, Texas $5.69B AUM 60.64% 1-Year Est. Return
Jane Street
Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return
XT
XTX Topco George Town, Cayman Islands $7.72B AUM 32.88% 1-Year Est. Return
Vanguard Fiduciary Trust
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Simplex Trading's ATER Position: Q2 2026 in Review

Simplex Trading opened a new position in Aterian (ATER) in Q2 2026: 6,172 shares worth $8.15K. The stake represents ﹤0.01% of the portfolio and ranks #7845 among its holdings. This is a return to the name: Simplex Trading previously reported a position in ATER as recently as Q4 2025.

Simplex Trading first reported a position in ATER in Q1 2021 and has held it in 18 quarters since. The position peaked at $346K in Q1 2021. 24 funds tracked by Wall St. Rank hold ATER as of Q2 2026.

  • Simplex Trading held 6,172 shares of Aterian worth $8.15K as of Q2 2026.
  • Aterian was a new Simplex Trading position in Q2 2026.
  • Aterian made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #7845 holding.
  • Simplex Trading first reported a position in Aterian in Q1 2021 and has held it in 18 quarters since.
  • Simplex Trading's Aterian position peaked at $346K in Q1 2021.
  • 24 funds tracked by Wall St. Rank held Aterian as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.