Simplex Trading
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Simplex Trading’s CarMax KMX Stock Holding History

Simplex Trading’s Portfolio KMX Stock Details KMX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-26,706
Closed -$1.07M – 9342
2025
Q3 		$1.2M Buy
26,706
+24,623
+1,182% +$1.47M ﹤0.01% 2862
2025
Q2 		$139K Buy
+2,083
New +$140K ﹤0.01% 4897
2022
Q1 		– Sell
-21,400
Closed -$2.3M – 10925
2021
Q4 		$2.79M Sell
21,400
-14,719
-41% -$2.06M ﹤0.01% 1707
2021
Q3 		$4.72M Sell
36,119
-200
-0.6% -$26.6K ﹤0.01% 1256
2021
Q2 		$4.69M Buy
36,319
+22,326
+160% +$2.76M ﹤0.01% 1239
2021
Q1 		$0 Buy
13,993
+5,324
+61% +$648K ﹤0.01% 9411
2020
Q4 		$818K Buy
8,669
+8,167
+1,627% +$766K ﹤0.01% 2811
2020
Q3 		$46K Buy
+502
New +$50.1K ﹤0.01% 5681
2020
Q2 		– Sell
-3
Closed -$235 – 7976
2020
Q1 		$0 Sell
3
-1,127
-100% -$95.4K ﹤0.01% 7922
2019
Q4 		$99K Buy
+1,130
New +$106K ﹤0.01% 4520
2018
Q1 		– Sell
-21,280
Closed -$1.39M – 6506
2017
Q4 		$1.36M Buy
+21,280
New +$1.52M 0.06% 283
2017
Q3 		– Sell
-36,111
Closed -$2.41M – 6247
2017
Q2 		$2.28M Sell
36,111
-2,759
-7% -$167K 0.1% 157
2017
Q1 		$2.3M Buy
38,870
+12,445
+47% +$809K 0.1% 182
2016
Q4 		$1.7M Buy
26,425
+9,712
+58% +$545K 0.1% 165
2016
Q3 		$891K Buy
+16,713
New +$947K 0.06% 293
2016
Q2 		– Sell
-7,560
Closed -$388K – 6140
2016
Q1 		$386K Buy
7,560
+6,144
+434% +$290K 0.03% 548
2015
Q4 		$76K Sell
1,416
-2,140
-60% -$122K 0.01% 1573
2015
Q3 		$210K Buy
3,556
+985
+38% +$61.7K 0.02% 878
2015
Q2 		$170K Sell
2,571
-54
-2% -$3.85K 0.01% 885
2015
Q1 		$181K Buy
+2,625
New +$171K 0.02% 766

Other funds holding KMX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
SIM
SRS Investment Management New York $10.8B AUM 34.05% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return

Simplex Trading's KMX Position: Q4 2025 in Review

Simplex Trading sold out of CarMax (KMX) in Q4 2025, closing a stake of 26,706 shares — an estimated $1.07M sold.

Simplex Trading first reported a position in KMX in Q1 2015 and held it in 20 quarters. The position peaked at $4.72M in Q3 2021. 538 funds tracked by Wall St. Rank hold KMX as of Q4 2025.

  • Simplex Trading reported no remaining CarMax position as of Q4 2025 after selling out during the quarter.
  • Simplex Trading sold 26,706 CarMax shares in Q4 2025, an estimated $1.07M.
  • Simplex Trading first reported a position in CarMax in Q1 2015 and held it in 20 quarters.
  • Simplex Trading's CarMax position peaked at $4.72M in Q3 2021.
  • 538 funds tracked by Wall St. Rank held CarMax as of Q4 2025.

Based on Simplex Trading's 13F filing for Q4 2025, filed 11 Feb 2026.