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
2026
Q1 		$8.65M Sell
208,000
-57,900
-22% -$2.53M 0.01% 763
2025
Q4 		$10.3M Sell
265,900
-17,900
-6% -$716K 0.01% 831
2025
Q3 		$12.7M Buy
283,800
+173,600
+158% +$10.4M 0.01% 831
2025
Q2 		$7.41M Sell
110,200
-23,300
-17% -$1.57M ﹤0.01% 1076
2025
Q1 		$10.4M Buy
133,500
+16,200
+14% +$1.3M 0.01% 867
2024
Q4 		$9.59M Sell
117,300
-3,100
-3% -$243K 0.01% 1061
2024
Q3 		$9.32M Sell
120,400
-33,700
-22% -$2.66M 0.01% 1080
2024
Q2 		$11.3M Sell
154,100
-27,000
-15% -$1.95M 0.01% 935
2024
Q1 		$15.8M Sell
181,100
-96,300
-35% -$7.28M 0.01% 841
2023
Q4 		$21.3M Buy
277,400
+40,000
+17% +$2.69M 0.01% 693
2023
Q3 		$16.8M Sell
237,400
-83,400
-26% -$6.83M 0.01% 670
2023
Q2 		$26.9M Sell
320,800
-117,500
-27% -$8.6M 0.02% 457
2023
Q1 		$28.2M Buy
438,300
+74,400
+20% +$4.98M 0.02% 445
2022
Q4 		$22.2M Buy
363,900
+175,100
+93% +$11.2M 0.02% 510
2022
Q3 		$12.5M Sell
188,800
-17,300
-8% -$1.58M 0.01% 702
2022
Q2 		$18.6M Buy
206,100
+5,000
+2% +$470K 0.02% 529
2022
Q1 		$19.4M Buy
201,100
+67,500
+51% +$7.26M 0.02% 553
2021
Q4 		$17.4M Buy
133,600
+103,600
+345% +$14.5M 0.02% 564
2021
Q3 		$3.92M Buy
30,000
+7,200
+32% +$958K ﹤0.01% 1423
2021
Q2 		$2.94M Buy
+22,800
New +$2.82M ﹤0.01% 1695
2021
Q1 		– Sell
-916
Closed -$8.65M – 9410
2020
Q4 		$8.65M Buy
916
+43
+5% +$4.03K 0.01% 651
2020
Q3 		$8.02M Buy
873
+275
+46% +$27.5K 0.01% 618
2020
Q2 		$5.36M Buy
598
+231
+63% +$18.1K 0.01% 814
2020
Q1 		$1.98M Sell
367
-98
-21% -$8.29K ﹤0.01% 1286
2019
Q4 		$4.08M Sell
465
-258
-36% -$24.3K 0.01% 934
2019
Q3 		$6.36M Sell
723
-56
-7% -$4.81K 0.02% 591
2019
Q2 		$6.76M Sell
779
-405
-34% -$31.7K 0.02% 542
2019
Q1 		$8.26M Buy
1,184
+794
+204% +$48.9K 0.02% 455
2018
Q4 		$2.45M Buy
390
+94
+32% +$6.2K 0.01% 958
2018
Q3 		$2.21M Buy
296
+15
+5% +$1.14K 0.01% 1168
2018
Q2 		$2.05M Sell
281
-1
-0.4% -$67 0.01% 1116
2018
Q1 		$103K Sell
282
-369
-57% -$24.1K ﹤0.01% 1780
2017
Q4 		$27K Sell
651
-650
-50% -$46.4K ﹤0.01% 3031
2017
Q3 		$1.47M Sell
1,301
-585
-31% -$39K 0.06% 256
2017
Q2 		$813K Buy
1,886
+1,165
+162% +$70.4K 0.04% 444
2017
Q1 		$88K Buy
721
+348
+93% +$22.6K ﹤0.01% 1856
2016
Q4 		$82K Buy
373
+236
+172% +$13.2K ﹤0.01% 1708
2016
Q3 		$4K Sell
137
-573
-81% -$32.5K ﹤0.01% 4470
2016
Q2 		$32K Buy
710
+523
+280% +$26.9K ﹤0.01% 2464
2016
Q1 		$52K Sell
187
-107
-36% -$5.05K ﹤0.01% 1918
2015
Q4 		$14K Buy
294
+245
+500% +$14K ﹤0.01% 3009
2015
Q3 		$3K Buy
49
+23
+88% +$1.44K ﹤0.01% 4362
2015
Q2 		$3K Sell
26
-79
-75% -$5.63K ﹤0.01% 4054
2015
Q1 		$33K Buy
105
+70
+200% +$4.56K ﹤0.01% 1875
2014
Q4 		$36K Buy
+35
New +$1.94K ﹤0.01% 1602

Other funds holding KMX

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
SV
Starboard Value New York $4.57B AUM 4.97% 1-Year Est. Return
SIM
SRS Investment Management New York $9.47B AUM 60.12% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 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. 537 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.
  • 537 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.