Simplex Trading
PRTS icon

Simplex Trading’s CarParts.com PRTS Stock Holding History

Simplex Trading’s Portfolio PRTS Stock Details PRTS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$55K Buy
8,543
+2,819
+49% +$20.9K ﹤0.01% 6206
2026
Q1 		$45K Buy
5,724
+1,631
+40% +$10.6K ﹤0.01% 5996
2025
Q4 		$20.5K Buy
4,093
+2,925
+250% +$16.4K ﹤0.01% 6459
2025
Q3 		$8K Buy
1,168
+246
+27% +$2K ﹤0.01% 8042
2025
Q2 		$6K Sell
922
-3,242
-78% -$27.7K ﹤0.01% 7668
2025
Q1 		$41K Sell
4,164
-2,271
-35% -$24.9K ﹤0.01% 5979
2024
Q4 		$69K Buy
6,435
+1,955
+44% +$18K ﹤0.01% 5539
2024
Q3 		$40K Buy
4,480
+3,737
+503% +$35.3K ﹤0.01% 6091
2024
Q2 		$7K Buy
743
+659
+785% +$8.02K ﹤0.01% 7693
2024
Q1 		$1K Buy
84
+26
+45% +$651 ﹤0.01% 8626
2023
Q4 		$1K Buy
+58
New +$1.96K ﹤0.01% 8559
2023
Q1 		– Sell
-338
Closed -$21.4K – 9893
2022
Q4 		$21K Buy
+338
New +$17.7K ﹤0.01% 6839
2021
Q2 		– Sell
-2,937
Closed -$492K – 10571
2021
Q1 		$419K Sell
2,937
-8,724
-75% -$1.41M ﹤0.01% 3629
2020
Q4 		$1.44M Buy
11,661
+7,515
+181% +$970K ﹤0.01% 2123
2020
Q3 		$448K Buy
4,146
+2,754
+198% +$337K ﹤0.01% 3137
2020
Q2 		$120K Buy
+1,392
New +$74.2K ﹤0.01% 4605

Other funds holding PRTS

Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
NSIM
North Star Investment Management Chicago, Illinois $1.84B AUM 28.81% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Fiduciary Trust
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM
GCP
GSA Capital Partners London, United Kingdom $1.59B AUM 39.81% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
KA
Kerrisdale Advisers Miami, Florida $399M AUM 42.87% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return

Simplex Trading's PRTS Position: Q2 2026 in Review

Simplex Trading increased its CarParts.com (PRTS) stake by 49% in Q2 2026, buying an estimated $20.9K and bringing the position to 8,543 shares worth $55K. The position accounts for ﹤0.01% of the portfolio, ranked #6206.

Simplex Trading first reported a position in PRTS in Q2 2020 and has held it in 16 quarters since. The position peaked at $1.44M in Q4 2020. 26 funds tracked by Wall St. Rank hold PRTS as of Q2 2026.

  • Simplex Trading held 8,543 shares of CarParts.com worth $55K as of Q2 2026.
  • Simplex Trading bought 2,819 CarParts.com shares in Q2 2026, an estimated $20.9K.
  • CarParts.com made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #6206 holding.
  • Simplex Trading first reported a position in CarParts.com in Q2 2020 and has held it in 16 quarters since.
  • Simplex Trading's CarParts.com position peaked at $1.44M in Q4 2020.
  • 26 funds tracked by Wall St. Rank held CarParts.com as of Q2 2026.

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