MLM — MARTIN MARIETTA MATERIALS INC COM

Ownership history in Byrne Asset Management LLC  ·  17 quarters on record

AI Ownership Summary

Byrne Asset Management LLC reported MARTIN MARIETTA MATERIALS INC COM (MLM) in 17 quarterly 13F filings from 2023 Q4 through 2026 Q1. Peak portfolio weight reached 0.29% in 2024 Q1. The latest visible filing shows MLM at 0.19% 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 MLM ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Byrne Asset Management LLC's position in MARTIN MARIETTA MATERIALS INC COM, 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
2026 Q1

MLM was reported at 0.19% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.29% 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 2026 Q1

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.

MLM stock page Byrne Asset Management LLC fund profile Byrne Asset Management LLC full holdings
How Byrne Asset Management LLC held MLM — position size vs. price
% of Fund (quarterly)    MLM price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 9 quarters  ▾
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 REDUCED 540 -32 -5.6% 0.19% $318K 2026-05-15 (Est.) $627.35
2025 Q4 REDUCED 572 -47 -7.6% 0.20% $356K 2026-01-12 $662.90
2025 Q3 REDUCED 619 -20 -3.1% 0.24% $390K 2025-10-22 $620.91
2025 Q2 REDUCED 639 -10 -1.5% 0.23% $351K 2025-07-09 $564.81
2025 Q1 REDUCED 649 -15 -2.3% 0.23% $310K 2025-04-16 $488.45
2024 Q4 UNCHANGED 664 — 0% 0.24% $357K 2025-01-28 $538.39
2024 Q2 REDUCED 664 -19 -2.8% 0.25% $357K 2024-07-23 $559.57
2024 Q1 REDUCED 683 -17 -2.4% 0.29% $419K 2024-04-22 $577.88
2023 Q4 REDUCED 700 -163 -18.9% 0.27% $350K 2024-01-29 $506.84
8 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding MLM

As of 2026 Q1 — sorted by position size

Mader & Shannon Wealth Management, Inc. 3Y 7Y 3.65% TRAN CAPITAL MANAGEMENT, L.P. 3Y 7Y 3.55% Robbins Farley 3Y 2.66% RD Lewis Holdings, Inc. 1.85% Sage Investment Advisers LLC 3Y 1.81% Red Spruce Capital, LLC 3Y 1.64% CULTIVAR CAPITAL, INC. 1.56% Renaissance Investment Group LLC 3Y 7Y 1.48% FRANKLIN STREET ADVISORS INC /NC 3Y 7Y 1.48% DAVENPORT & Co LLC 3Y 7Y 1.09%

FAQ About Byrne Asset Management LLC and MLM

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

How long has Byrne Asset Management LLC reported owning MLM?

Byrne Asset Management LLC reported MLM across 9 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

What was the largest reported MLM position in Byrne Asset Management LLC's portfolio?

The largest reported portfolio weight for MLM was 0.29% in 2024 Q1.

What is the latest reported MLM position on this page?

The most recent filing on this page is 2026 Q1, when Byrne Asset Management LLC reported 540 shares, equal to 0.19% of portfolio, with an estimated market value of $318K.

What does the chart on this MLM ownership page compare?

The chart compares Byrne Asset Management LLC's quarterly MLM 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.

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