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 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	$1.45M	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 $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

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 New York $138B AUM 41.87% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Jupiter Topco New York $245B AUM

Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return

Magnetar Financial's KMX Position: Q2 2026 in Review

Magnetar Financial opened a new position in CarMax (KMX) in Q2 2026: 21,231 shares worth $1.12M. The stake represents 0.01% of the portfolio and ranks #417 among its holdings. This is a return to the name: Magnetar Financial previously reported a position in KMX as recently as Q4 2021.

Magnetar Financial first reported a position in KMX in Q2 2015 and has held it in 11 quarters since. The position peaked at $3.67M in Q4 2017. 555 funds tracked by Wall St. Rank hold KMX as of Q2 2026.

Magnetar Financial held 21,231 shares of CarMax worth $1.12M as of Q2 2026.
CarMax was a new Magnetar Financial position in Q2 2026.
CarMax made up 0.01% of Magnetar Financial's portfolio in Q2 2026, its #417 holding.
Magnetar Financial first reported a position in CarMax in Q2 2015 and has held it in 11 quarters since.
Magnetar Financial's CarMax position peaked at $3.67M in Q4 2017.
555 funds tracked by Wall St. Rank held CarMax as of Q2 2026.

Based on Magnetar Financial's 13F filing for Q2 2026, filed 14 Aug 2026.