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KMX Institutional Ownership & 13F Holders | SmartMoneyDB

KMXCARMAX INC

COM · CUSIP 143130102

Smart Money Ownership

Of the 15 tracked institutions holding KMX, 10 have a 3-year clone track record — 6 of them beat the S&P. Average holder's clone alpha: +1.4pt. It's a gauge of who owns the name, not just how many.

$51.8M · 0.1% of book

KMX (CARMAX INC) Institutional Ownership Summary

Among the 15 tracked institutional investors we monitor, KMX (CARMAX INC) is held with a combined value of $2.63B across 64,336,059 shares. The largest holder is BlackRock, Inc. with a position worth $717.57M (0.01% of their portfolio). Starboard Value LP opened a new position in the most recent quarter. 7 funds increased their holdings. 6 funds reduced their position.

Total Institutional Value

$2.63B

Total Shares Held

64,336,059

Institutional Holders

% of Shares Outstanding

45.3%

of 141.91M shares · SEC 2026-06-22

Days to Cover

4.1-8.5%

11.53M shares short · FINRA 2026-07-15

Tracked 13F institutions hold 45.3% of KMX's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-06-22), not a live float.

This Quarter's Biggest Movers

Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.

Biggest Buyers

Starboard Value LPNew position~$257.9M AQR CAPITAL MANAGEMENT LLC+27% shares~$87.5M MILLENNIUM MANAGEMENT LLC+81% shares~$26.0M Gotham Asset Management, LLC+131% shares~$23.2M Point72 Asset Management, L.P.+107% shares~$7.2M

13F Institutional Holders

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AQR CAPITAL MANAGEMENT LLC

SRS Investment Management, LLC

MILLENNIUM MANAGEMENT LLC

0.02% of book+80.6%

$58.31M

RENAISSANCE TECHNOLOGIES LLC

0.08% of book+8.4%

$51.77M

Gotham Asset Management, LLC

#	Fund	Value↓	Shares	Portfolio %	Change
1	BlackRock, Inc.	$717.57M	17,257,461	0.01%	-3.3%
2	VANGUARD GROUP INC	$582.57M	15,076,900	0.01%	-10.8%
3	AQR CAPITAL MANAGEMENT LLC	$412.58M	10,060,502	0.19%	+26.9%
4	Starboard Value LP	$257.85M	6,201,362	5.64%	New
5	SRS Investment Management, LLC	$235.00M	5,651,674	2.48%	+0.2%
6	STATE STREET CORP	$203.12M	4,885,060	0.01%	-3.3%
7	MILLENNIUM MANAGEMENT LLC	$58.31M	1,402,433	0.02%	+80.6%
8	RENAISSANCE TECHNOLOGIES LLC	$51.77M	1,245,000	0.08%	+8.4%
9	Gotham Asset Management, LLC	$40.94M	984,504	0.13%	+130.9%
10	CITADEL ADVISORS LLC	$20.17M	485,088	0.01%	-2.7%

Congress Trading

2 members · 5 disclosed trades in KMX

Member	Type	Amount	Date
Gilbert Cisneros	Buy	$1,001 - $15,000	Jan 13, 2025
James M Inhofe	Sell	$100,001 - $250,000	Jan 16, 2019
James M Inhofe	Sell	$1,001 - $15,000	May 3, 2018
James M Inhofe	Buy	$15,001 - $50,000

Frequently Asked Questions

Which institutional investors own the most KMX stock?

As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of KMX with a position worth $717.57M, representing 0.01% of their portfolio. In total, 15 institutional investors hold KMX with a combined value of $2.63B.

Are hedge funds buying or selling KMX?

In the most recent quarter, 1 fund opened a new position in KMX. Additionally, 7 increased their holdings and 6 reduced their positions.

What percentage of KMX is owned by institutional investors?

Institutional investors hold $2.63B worth of KMX stock across 15 positions. The largest institutional holder is BlackRock, Inc. with $717.57M in holdings.

What is a 13F filing and why does it matter for KMX?

A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For KMX, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.

Track KMX institutional moves

Get notified when hedge funds change their KMX positions.