SCHWERIN BOYLE CAPITAL MANAGEMENT INC KMX — CARMAX INC

Ownership history in SCHWERIN BOYLE CAPITAL MANAGEMENT INC  ·  27 quarters on record

AI Ownership Summary

SCHWERIN BOYLE CAPITAL MANAGEMENT INC reported CARMAX INC (KMX) in 27 quarterly 13F filings from 2023 Q4 through 2025 Q3. Peak portfolio weight reached 3.86% in 2024 Q1. The latest visible filing shows KMX at 1.83% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this KMX ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was SCHWERIN BOYLE CAPITAL MANAGEMENT INC's position in CARMAX INC, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2025 Q3

KMX was reported at 1.83% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
3.86% in 2024 Q1

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2023 Q4 to 2025 Q3

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

KMX stock page SCHWERIN BOYLE CAPITAL MANAGEMENT INC fund profile SCHWERIN BOYLE CAPITAL MANAGEMENT INC full holdings
How SCHWERIN BOYLE CAPITAL MANAGEMENT INC held KMX — position size vs. price
% of Fund (quarterly)    KMX price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 8 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q3 REDUCED — — — 372,156 -12,238 -3.2% 1.83% $16.7M 2025-11-13 $34.79
2025 Q2 REDUCED 7.6% -32.7% ✅ 384,394 -31,675 -7.6% 2.88% $25.8M 2025-08-14 $58.14
2025 Q1 REDUCED — — — 416,069 -9,136 -2.1% 3.34% $32.4M 2025-05-14 $67.82
2024 Q4 ADDED — — — 425,205 +2,300 +0.5% 3.57% $34.8M 2025-02-13 $87.60
2024 Q3 REDUCED — — — 422,905 -22,200 -5.0% 3.43% $32.7M 2024-11-13 $77.86
2024 Q2 UNCHANGED — — — 445,105 — 0% 3.42% $32.6M 2024-08-13 $76.82
2024 Q1 REDUCED — — — 445,105 -575 -0.1% 3.86% $38.8M 2024-05-14 $75.76
2023 Q4 REDUCED — — — 445,680 -19,175 -4.1% 3.82% $34.2M 2024-02-13 $72.54
19 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding KMX

As of 2026 Q1 — sorted by position size

Framtiden Holdings Management Co LLC 21.98% Rings Capital Management LLC 3Y 7Y 21.2% Silver Heights Capital Management Inc 3Y 7Y 14.66% Endure Capital Management, LLC 10.44% Mount Capital Ltd 3Y 6.88% Starboard Value LP 3Y 7Y 5.64% Kiltearn Partners LLP 3Y 7Y 4.42% BML Capital Management, LLC 3Y 4.14% BIGLARI, SARDAR 3Y 7Y 3.36% Hillman Capital Management, Inc. 3Y 7Y 3.15%

FAQ About SCHWERIN BOYLE CAPITAL MANAGEMENT INC and KMX

These are the practical questions this page is built to answer before you even open the full history table.

How long has SCHWERIN BOYLE CAPITAL MANAGEMENT INC reported owning KMX?

SCHWERIN BOYLE CAPITAL MANAGEMENT INC reported KMX across 8 quarterly 13F filings, from 2023 Q4 through 2025 Q3.

What was the largest reported KMX position in SCHWERIN BOYLE CAPITAL MANAGEMENT INC's portfolio?

The largest reported portfolio weight for KMX was 3.86% in 2024 Q1.

What is the latest reported KMX position on this page?

The most recent filing on this page is 2025 Q3, when SCHWERIN BOYLE CAPITAL MANAGEMENT INC reported 372,156 shares, equal to 1.83% of portfolio, with an estimated market value of $16.7M.

What does the chart on this KMX ownership page compare?

The chart compares SCHWERIN BOYLE CAPITAL MANAGEMENT INC's quarterly KMX portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did SCHWERIN BOYLE CAPITAL MANAGEMENT INC time their KMX position?

Based on 13F filing dates vs. subsequent KMX price moves, SCHWERIN BOYLE CAPITAL MANAGEMENT INC correctly timed 10 out of 25 reported position changes (40%). The annualised alpha on KMX relative to SPY over the holding period was -23.7%.

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