Carmax KMX Institutional Ownership

NYSE KMX

$61.24 -0.87 (-1.39%)

As of: Aug 31, 2026 · 3:59 PM EDT

Institutions by Trading Activity

554 Institutions

Increased 231 41.7%

Unchanged 73 13.2%

Reduced 250 45.1%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

105.11%

▼-1.15 pp QoQ

Shares Held by Institutions

149.10Mn

of 141.85Mn outstanding

▲+2.57% QoQ

Shares Outstanding

141.85Mn

-7.25Mn held outside 13F filers

Institutional Investors

554

filed 13F for Jun 2026

▲+8 vs prior quarter

Net Shares Added (QoQ)

+3.74Mn

accumulated since last quarter

Value of Holdings

$9.26Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Carmax Inc (NYSE:KMX) has 538 institutional investors that have filed 13F reports for the period ending March 2026.

Their combined ownership stood at 106.2% of outstanding shares in March 2026, up from 104.5% in December 2025.
They increased total shares held in KMX by 25.31% quarter over quarter, and investors in Carmax decreased 28.55% from a year ago.
During the quarter, 272 of these 538 funds increased positions in KMX, 191 reduced exposure, and 75 held steady.
Altogether, these fund groups held 156.38Mn shares in KMX by March 2026, up by 31.58Mn shares quarter on quarter, and down 15.79Mn shares year over year.
BlackRock, Inc. is the top holder of Carmax as of March 31, 2026, with 17.26Mn shares representing 11.72% of outstanding stock.
The most significant purchases of KMX for the quarter ending March 2026 came from VANGUARD PORTFOLIO MANAGEMENT LLC (7.28Mn), VANGUARD CAPITAL MANAGEMENT LLC (6.39Mn), Starboard Value LP (6.2Mn), Janus Henderson Group Plc (4.63Mn), TWO SIGMA INVESTMENTS, LP (2.38Mn).
The biggest sellers of Carmax for the quarter ending March 2026 included DIAMOND HILL CAPITAL MANAGEMENT INC (1.74Mn), Apollo Management Holdings, L.P. (901.73K), Vulcan Value Partners, LLC (723.96K), D. E. Shaw & Co., Inc. (722.53K), TUDOR INVESTMENT CORP ET AL (661.95K).
According to Business Quant data, leading holders of KMX for March 2026 are BlackRock, Inc. (17.26Mn), AQR CAPITAL MANAGEMENT LLC (10.06Mn), Janus Henderson Group Plc (9.16Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (7.28Mn), VANGUARD CAPITAL MANAGEMENT LLC (6.39Mn), Starboard Value LP (6.2Mn), SRS Investment Management, LLC (5.65Mn), TWO SIGMA INVESTMENTS, LP (5.35Mn), State Street Corp (4.89Mn), PRIMECAP MANAGEMENT CO/CA/ (4.36Mn).

Form 13F Holdings

554 Institutional Holders

Report period 30 Jun, 2026

Total shares held 149.10Mn

Of outstanding 105.11%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	17,092,089	12.05%	▼165,372	-0.96%	$904.00Mn
2	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	7,286,475	5.14%	▲10,203	+0.14%	$385.38Mn
3	AQR CAPITAL MANAGEMENT LLC	0001167557	6,622,794	4.67%	▼3,437,708	-34.17%	$348.96Mn
4	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	6,420,191	4.53%	▲33,427	+0.52%	$339.56Mn
5	SRS Investment Management, LLC	0001503174	5,922,862	4.18%	▲271,188	+4.80%	$313.26Mn
6	TWO SIGMA INVESTMENTS, LP	0001179392	5,831,970	4.11%	▲484,873	+9.07%	$308.45Mn
7	State Street Corp	0000093751	5,156,276	3.64%	▲271,216	+5.55%	$272.72Mn
8	DIMENSIONAL FUND ADVISORS LP	0000354204	4,974,772	3.51%	▲699,109	+16.35%	$263.12Mn
9	Jupiter Topco LLC	0002146052	4,645,036	3.27%	▲4,645,036	0.00%	$245.68Mn
10	PRIMECAP MANAGEMENT CO/CA/	0000763212	4,359,016	3.07%	▲870	+0.02%	$230.55Mn
11	D. E. Shaw & Co., Inc.	0001009207	3,280,103	2.31%	▲359,686	+12.32%	$173.48Mn
12	AMERICAN CENTURY COMPANIES INC	0000748054	3,250,267	2.29%	▲1,859,355	+133.68%	$171.91Mn
13	Baird Financial Group, Inc.	0001648711	3,207,134	2.26%	▲138,682	+4.52%	$169.63Mn
14	Starboard Value LP	0001517137	3,206,438	2.26%	▼2,994,924	-48.29%	$169.59Mn
15	First Pacific Advisors, LP	0001377581	3,008,564	2.12%	▲26,855	+0.90%	$159.12Mn
16	HAWK RIDGE CAPITAL MANAGEMENT LP	0001609074	2,834,458	2.00%	▲2,834,458	0.00%	$149.91Mn
17	GEODE CAPITAL MANAGEMENT, LLC	0001214717	2,564,007	1.81%	▲9,240	+0.36%	$135.64Mn
18	MANUFACTURERS LIFE INSURANCE COMPANY, THE	0000928047	2,420,139	1.71%	▲21,882	+0.91%	$128.00Mn
19	CANADA PENSION PLAN INVESTMENT BOARD	0001283718	2,183,121	1.54%	▲1,908,090	+693.77%	$115.47Mn
20	Morgan Stanley	0000895421	2,176,424	1.53%	▼358,315	-14.14%	$115.11Mn

Showing 1 to 20 of 554 holders