Stock Analysis
Data Source: SEC EDGAR 13F
Updated Hourly

MARTIN MARIETTA MATLS INC (MLM)

1K + Investors. Track Smart Money conviction in MLM. See who's accumulating, reducing, or initiating positions.

Current Price
-- USD
Analyst Target
-- (0 analysts)
Upside
0.00%
Net Flow Q/Q
↓ -35
Streak
1Q ▼
Buyers last Q
48%

Smart Money Signals — MLM

Based on 1069 hedge funds · latest filing: 2026 Q1 · updated quarterly

📉

Selling streak — 1 quarter in a row

last 6Q
For 1 consecutive quarter, more hedge funds reduced or closed their MLM positions than added to them. Sustained institutional selling is a meaningful warning sign — these are professionals with deep research teams collectively deciding to exit.
🏔️

At the ownership peak (97% of max)

97% of all-time peak
1,069 hedge funds hold MLM right now — the highest count in 3.0 years. When ownership is this concentrated, any bad news can trigger a chain reaction: one big fund sells, others follow. This is a classic 'crowded trade' — high popularity doesn't equal safety.
📶

Steady growth — +15% more funds vs a year ago

fund count last 6Q
+141 new funds entered over the past year (+15% YoY). Gradual, steady growth in institutional ownership is generally a healthy signal — not a speculative rush, but consistent conviction.
🟠

More sellers than buyers — 48% buying

479 buying513 selling
Last quarter: 513 funds reduced or exited vs 479 that bought or added. When more than half of active funds are selling, it's a caution flag — especially if the stock price hasn't moved down yet.
⚠️

Fewer new buyers each quarter (-54 vs last Q)

new funds entering per quarter
Funds opening this position for the first time: 140 → 134 → 161 → 107. Each quarter fewer new institutions are entering. This usually means most funds that wanted in are already in — the stock is well-known but the pool of potential new buyers is shrinking.
🔒

62% of holders stayed for 2+ years

■ 62% conviction (2yr+) ■ 21% medium ■ 16% new
666 out of 1,069 hedge funds have held MLM for over 2 years without selling. Long-term investors are generally harder to shake out during market stress, creating a stable ownership base that limits the risk of sudden capitulation.
➡️

Steady discovery — ~107 new funds/quarter

118 → 140 → 134 → 161 → 107 new funds/Q
New funds entering each quarter: 140 → 134 → 161 → 107. Consistent flow of new institutional buyers without clear acceleration or slowdown.
🏛️

Deep conviction — 66% of holders stayed 2+ years

■ 66% veterans ■ 12% 1-2yr ■ 22% new
Of 1,085 current holders: 712 (66%) have held for over 2 years without selling. These are not momentum buyers — they have lived through drawdowns and stayed. A large veteran base acts as a stabilizing force during selloffs.
🏆

Elite ownership — 46% AUM from top-100 funds

46% from top-100 AUM funds
63 of 1069 holders are among the 100 largest funds by AUM, controlling 46% of total institutional value in MLM. When the biggest players dominate the cap table, it signifies deep institutional support — since mega-funds deploy the most rigorous due diligence and capital.
3.6
out of 10
Low Exit Risk
Exit risk score 3.6/10 — low institutional crowding. Ownership is below peak levels, holder base is relatively sticky, and buying momentum is positive.

Methodology note: these Smart Money cards use consecutive 13F disclosure snapshots, not trade-by-trade execution data. "Buying", "selling", "new holders", and "trimmed" refer to quarter-over-quarter changes in reported holders, aggregate shares, or disclosed position values between filings. They are useful for ownership regime analysis and crowding, but they do not imply exact trade timing on the filing date.

Institutional Sentiment Summary — MLM

In 2026 Q1, 479 hedge funds were net buyers of MLM (107 opened a new position, 372 added to an existing one), while 513 reduced or exited (371 trimmed, 142 sold completely) — a 48% buyer ratio, indicating roughly balanced activity. 46% of total institutional value in MLM is held by top-100 AUM funds, reflecting elite-tier ownership quality. Net fund flow last quarter: -35 funds (more exits than new entries). Total institutional holders: 1069.

Hedge Fund Ownership: MLM

How many hedge funds hold MLM — quarterly history vs. share price
Quarterly hedge fund ownership of MLM vs. share price

Market Analysis: MLM

Analyst Price Targets

Avg. Price Target
--

Analyst Recommendations

Stock Performance

Real-time

Company Profile: MLM

-- --

Institutional ownership data sourced from SEC EDGAR Form 13F-HR filings.

Is It Too Late to Buy MARTIN MARIETTA MATLS INC (MLM) Based on Hedge Fund 13F Filings?

Signal Freshness measures how much MLM has moved relative to its sector benchmark (SPY) since the 2026 Q1 13F filing. A stock that has barely outrun its sector is still a relatively fresh entry point — the fund's thesis has not yet been priced in by the broader market.

Since Quarter End March 31, 2026 · 71d ago
MLM
+0.3%
SPY
+11.7%

MLM outperformed SPY by -11.4% since March 31, 2026.

Since 13F Filing Date May 15, 2026 · 26d ago
MLM
-0.9%
SPY
-1.7%

Since the filing became public, MLM outperformed SPY by +0.8% .

Interpretation: The stock is tracking its sector benchmark closely. The signal remains fresh and the entry point is still near the fund's implied reference. Learn more →

Smart Money Signal ?
Broad Consensus, Selective Conviction

Many quality funds hold this stock, but top-tier positions remain relatively small.

64 top-rated funds 13 high-conviction
Consensus
7.9
/ 10
breadth
×
Elite
4.7
/ 10
conviction
Hedge Fund Positioning: MLM
1K + Investors

Track Smart Money conviction in MLM. See who's accumulating, reducing, or initiating positions.

Metric All 13F Filers (2026 Q1) Prior (2025 Q4) Change
Funds Holding 1064 1104 -3.62%
13F Shares 56M 59M -4.99%
Total Value $31.12B $36.51B -14.76%
New Positions 104 161 -57
Increased Positions 369 352 +17
Closed Positions 144 87 +57
Reduced Positions 366 349 +17
Total Calls 9 10 -10.0%
Total Puts 9 7 28.57%
PUT/CALL Ratio 1.0 0.7 Neutral

Statistics: MLM

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Financial Highlights

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Institutional Holders (2026 Q1)

1K + investors

Explore institutional interest and hedge fund ownership dynamics. Analyze portfolio weights, new positions, and conviction trends in MLM. Verified SEC 13F-HR filings.

QUARTER:
Top 25 institutional holders of MLM — 2026 Q1 · Source: SEC Form 13F
# Investor % of Portfolio Shares Mkt Value
1 STEGINSKY CAPITAL LLC 12.49% 128,350 $76K
2 Camrose Capital Investment Partners LLP 10.53% 136,719 $80.5M
3 Nitorum Capital, L.P. 9.09% 17,587 $10.4M
4 Pelham Capital Ltd. 8.53% 18,480 $10.9M
5 Quantum Capital Management, LLC / NJ 6.81% 90,394 $53.2M
6 One Madison Group LLC 6.19% 91,000 $53.6M
7 MCDONALD CAPITAL INVESTORS INC/CA 6.04% 149,912 $88.3M
8 Obion Capital Management LP 5.77% 9,943 $5.9M
9 Drummond Knight Asset Management Pty Ltd 5.45% 26,170 $15.4M
10 RDST Capital LLC 5.39% 95,095 $56.0M
11 GARDNER RUSSO & QUINN LLC 4.96% 715,411 $421.1M
12 M.D. Sass, LLC 4.60% 103,109 $60.7M
13 Coalescence Partners Investment Management, LP 3.91% 30,716 $18.1M
14 Mader & Shannon Wealth Management, Inc. 3.65% 13,402 $7.9M
15 Progeny 3, Inc. 3.56% 113,150 $66.6M
16 TRAN CAPITAL MANAGEMENT, L.P. 3.55% 43,889 $25.8M
17 BRIDGER MANAGEMENT, LLC 3.51% 7,638 $4.5M
18 HAWK RIDGE CAPITAL MANAGEMENT LP 3.43% 160,535 $94.5M
19 Bluegrass Capital Partners LP 3.39% 8,000 $4.7M
20 LATHROP INVESTMENT MANAGEMENT CO 3.28% 29,802 $18K
21 Skye Global Management LP 3.15% 268,000 $157.8M
22 Select Equity Group, L.P. 3.11% 1,033,420 $608.4M
23 Socorro Asset Management LP 3.08% 11,572 $6.8M
24 Harvey Partners, LLC 2.99% 63,925 $37.6M
25 Rather & Kittrell, Inc. 2.87% 31,554 $18.6M
Investor Ownership
History 		% of Portfolio Prev % Rank Conviction Avg Buy Price 13F Score™ 3Y / 7Y Sell Timing Shares Mkt Value Change Change % Source Quarter Filed

Frequently Asked Questions — MARTIN MARIETTA MATLS INC (MLM)

What does the Smart Money Trend signal show for MLM?

Selling streak — 1 quarter in a row: For 1 consecutive quarter, more hedge funds reduced or closed their MLM positions than added to them. Sustained institutional selling is a meaningful warning sign — these are professionals with deep research teams collectively deciding to exit.

What is the institutional breadth score for MLM?

More sellers than buyers — 48% buying: Last quarter: 513 funds reduced or exited vs 479 that bought or added. When more than half of active funds are selling, it's a caution flag — especially if the stock price hasn't moved down yet.

What is the fund quality score for MLM holders?

Elite ownership — 46% AUM from top-100 funds: 63 of 1069 holders are among the 100 largest funds by AUM, controlling 46% of total institutional value in MLM. When the biggest players dominate the cap table, it signifies deep institutional support — since mega-funds deploy the most rigorous due diligence and capital.

How long have hedge funds held MLM?

62% of holders stayed for 2+ years: 666 out of 1,069 hedge funds have held MLM for over 2 years without selling. Long-term investors are generally harder to shake out during market stress, creating a stable ownership base that limits the risk of sudden capitulation.

Is it too late to buy MARTIN MARIETTA MATLS INC (MLM) following the 2026 Q1 hedge fund 13F filings?

As of today, MLM has moved -0.9% since the 2026 Q1 13F filing date (May 15, 2026), compared to -1.7% for the SPY sector ETF — an outperformance of +0.8%. Since the quarter end (March 31, 2026), MLM has gained +0.3% vs +11.7% for SPY. The stock is tracking its sector benchmark closely. The signal remains fresh and the entry point is still near the fund's implied reference.

Where does this institutional ownership data come from?

All holdings data is sourced from SEC Form 13F filings, which institutional investment managers with over $100 million in assets are required to submit quarterly. Data is parsed directly from SEC EDGAR.

Disclaimer: The information on this page is for informational purposes only and does not constitute investment advice, a recommendation, or an offer to buy or sell any security. Institutional holdings data is sourced from SEC Form 13F filings and reflects positions as of the filing date. Past performance of any fund or portfolio is not indicative of future results. 13Foresight is not a registered investment adviser. Always conduct your own due diligence before making investment decisions.

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