Magnetar Financial’s CarMax KMX Stock Holding History

Magnetar Financial’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 Q3	$1.16M	Sell	20,998 -233	-1%	-$13.6K	0.01%	431
2026 Q2	$1.12M	Buy	+21,231	New	+$924K	0.01%	417
2022 Q1	–	Sell	-5,498	Closed	-$716K	–	1439
2021 Q4	$716K	Buy	+5,498	New	+$770K	0.01%	888
2019 Q4	–	Sell	-10,293	Closed	-$906K	–	585
2019 Q3	$906K	Sell	10,293 -365	-3%	-$31.3K	0.02%	252
2019 Q2	$925K	Sell	10,658 -414	-4%	-$32.4K	0.02%	195
2019 Q1	$773K	Buy	+11,072	New	+$682K	0.02%	195
2018 Q3	–	Sell	-12,225	Closed	-$891K	–	611
2018 Q2	$891K	Buy	+12,225	New	+$816K	0.01%	164
2018 Q1	–	Sell	-57,266	Closed	-$3.67M	–	692
2017 Q4	$3.67M	Buy	57,266 +38,205	+200%	+$2.73M	0.07%	81
2017 Q3	$1.44M	Buy	+19,061	New	+$1.27M	0.03%	193
2017 Q2	–	Sell	-15,872	Closed	-$940K	–	884
2017 Q1	$940K	Buy	+15,872	New	+$1.03M	0.01%	318
2016 Q4	–	Sell	-3,811	Closed	-$203K	–	215
2016 Q3	$203K	Buy	+3,811	New	+$216K	﹤0.01%	508
2015 Q3	–	Sell	-6,270	Closed	-$415K	–	464
2015 Q2	$415K	Buy	+6,270	New	+$447K	0.01%	333

Other funds holding KMX

BlackRock New York $6.79T AUM 37.06% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.21T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM

Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return

State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return

Primecap Management Pasadena, California $161B AUM 86.05% 1-Year Est. Return

Baird Financial Group Milwaukee, Wisconsin $73.6B AUM 18.65% 1-Year Est. Return

American Century Companies Kansas City, Missouri $229B AUM 33.35% 1-Year Est. Return

First Pacific Advisors El Segundo, California $8.39B AUM 15.4% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return

Magnetar Financial's KMX Position: Q3 2026 in Review

Magnetar Financial reduced its CarMax (KMX) stake by 1.1% in Q3 2026, selling an estimated $13.6K and leaving 20,998 shares worth $1.16M. The position accounts for 0.01% of the portfolio, ranked #431.

Magnetar Financial first reported a position in KMX in Q2 2015 and has held it in 12 quarters since. The position peaked at $3.67M in Q4 2017. 457 funds tracked by Wall St. Rank hold KMX as of Q3 2026.

Magnetar Financial held 20,998 shares of CarMax worth $1.16M as of Q3 2026.
Magnetar Financial sold 233 CarMax shares in Q3 2026, an estimated $13.6K.
CarMax made up 0.01% of Magnetar Financial's portfolio in Q3 2026, its #431 holding.
Magnetar Financial first reported a position in CarMax in Q2 2015 and has held it in 12 quarters since.
Magnetar Financial's CarMax position peaked at $3.67M in Q4 2017.
457 funds tracked by Wall St. Rank held CarMax as of Q3 2026.

Based on Magnetar Financial's 13F filing for Q3 2026, filed 13 Nov 2026.