Martin Marietta Materials, Inc. bonds MLM
Who owns Martin Marietta Materials, Inc.'s debt and what their own filings say it is worth. Bond prices and yields are fund-reported marks (SEC Form N-PORT) as of Jul 2026; they lag the market by about two months. MLM stock page.
Every bond funds hold
Each bond's latest fund-reported mark. Price per 100 of face value; yield to maturity from price, coupon and maturity; spread over the matched-maturity Treasury for US-dollar bonds.
| Bond | Coupon | Maturity | Ccy | Price | Yield | Spread | Funds | Held | As of |
|---|---|---|---|---|---|---|---|---|---|
| 573284AQ9 | 3.45% fixed | 2027-06-01 | USD | 99.13 | 4.52% | 54 bp | 3 | $11.1M | Jul 2026 |
| 573284AT3 | 3.5% fixed | 2027-12-15 | USD | 98.46 | 4.67% | 56 bp | 8 | $5.3M | Jul 2026 |
| 573284AV8 | 2.5% fixed | 2030-03-15 | USD | 91.64 | 5.05% | 77 bp | 10 | $33.6M | Jul 2026 |
| 573284AW6 | 2.4% fixed | 2031-07-15 | USD | 88.01 | 5.17% | 85 bp | 15 | $18.1M | Jul 2026 |
| 573284BA3 | 5.15% fixed | 2034-12-01 | USD | 97.91 | 5.46% | 94 bp | 15 | $36.6M | Jul 2026 |
| 573284AJ5 | 6.25% fixed | 2037-05-01 | USD | 104.85 | 5.64% | 113 bp | 3 | $1.5M | Jun 2026 |
| 573284AU0 | 4.25% fixed | 2047-12-15 | USD | 76.84 | 6.22% | 112 bp | 7 | $1.3M | Jul 2026 |
| 573284AX4 | 3.2% fixed | 2051-07-15 | USD | 62.16 | 6.20% | 110 bp | 8 | $1.6M | Jul 2026 |
| 573284BB1 | 5.5% fixed | 2054-12-01 | USD | 90.37 | 6.23% | 112 bp | 10 | $3.2M | Jul 2026 |
Spread history
Median spread of the US-dollar bonds over Treasuries, month-ends with complete filings. Fund-reported.
Price history
Median fund-marked price across the bonds, per 100 of face value.
By month
Funds file on staggered quarter-ends, so each month-end is marked by the funds that reported for it; the amount held moves with which funds filed, not only with buying and selling.
| Month-end | Bonds | Held | Median price | USD yield | USD spread | Most funds on one bond |
|---|---|---|---|---|---|---|
| Jul 2026 | 8 | $110.8M | 91.01 | 5.46% | 94 bp | 15 |
| Jun 2026 | 9 | $205.3M | 95.73 | 5.39% | 79 bp | 29 |
| May 2026 | 8 | $188.5M | 94.31 | 4.88% | 64 bp | 23 |
| Apr 2026 | 8 | $130.2M | 93.55 | 4.92% | 83 bp | 16 |
| Mar 2026 | 9 | $207.2M | 94.24 | 5.14% | 98 bp | 31 |
| Feb 2026 | 8 | $207.5M | 96.19 | 4.49% | 62 bp | 23 |
| Jan 2026 | 8 | $128.1M | 95.03 | 4.66% | 68 bp | 20 |
| Dec 2025 | 9 | $205.3M | 96.53 | 4.87% | 81 bp | 32 |
| Nov 2025 | 8 | $208.2M | 96.15 | 4.56% | 69 bp | 23 |
| Oct 2025 | 8 | $120.9M | 96.00 | 4.64% | 79 bp | 21 |
| Sep 2025 | 9 | $204.6M | 98.83 | 4.87% | 75 bp | 32 |
| Aug 2025 | 8 | $198.1M | 94.42 | 4.79% | 74 bp | 23 |
| Jul 2025 | 8 | $124.0M | 93.74 | 4.93% | 74 bp | 22 |
Who holds the debt
Fund series in their latest quarterly N-PORT report, largest first, with the change in face value against each fund's own previous report. Names as reported in the filings. 34 added, 33 cut, 8 new holders and 11 exits in the latest quarter.
| Fund series | Report | Face value | Value | Change in face value |
|---|---|---|---|---|
| VANGUARD TOTAL BOND MARKET INDEX FUND VANGUARD BOND INDEX FUNDS | 2026-06-30 | $69.8M | $59.5M | -$6.3M |
| VANGUARD TOTAL BOND MARKET II INDEX FUND VANGUARD BOND INDEX FUNDS | 2026-06-30 | $55.3M | $47.7M | -$3.2M |
| VANGUARD INTERMEDIATE-TERM CORPORATE BOND INDEX FUND VANGUARD SCOTTSDALE FUNDS | 2026-05-31 | $34.5M | $32.5M | -$20.1M |
| VANGUARD INTERMEDIATE-TERM INVESTMENT-GRADE FUND VANGUARD FIXED INCOME SECURITIES FUNDS | 2026-07-31 | $33.4M | $32.2M | -$20.0M |
| Permanent Portfolio PERMANENT PORTFOLIO FAMILY OF FUNDS | 2026-07-31 | $30.0M | $27.5M | $0 |
| iShares iBoxx $ Investment Grade Corporate Bond ETF iShares Trust | 2026-05-31 | $28.3M | $25.1M | $1.9M |
| iShares Core U.S. Aggregate Bond ETF iShares Trust | 2026-05-31 | $25.7M | $22.5M | -$555K |
| VANGUARD SHORT-TERM CORPORATE BOND INDEX FUND VANGUARD SCOTTSDALE FUNDS | 2026-05-31 | $21.4M | $20.8M | -$4.7M |
| VANGUARD INTERMEDIATE-TERM BOND INDEX FUND VANGUARD BOND INDEX FUNDS | 2026-06-30 | $14.0M | $13.2M | -$175K |
| Fidelity U.S. Bond Index Fund Fidelity Salem Street Trust | 2026-05-31 | $12.2M | $11.8M | $0 |
| iShares 5-10 Year Investment Grade Corporate Bond ETF iShares Trust | 2026-05-31 | $11.8M | $11.2M | $178K |
| VANGUARD ULTRA-SHORT BOND ETF VANGUARD BOND INDEX FUNDS | 2026-06-30 | $10.4M | $10.3M | new |
| iShares Broad USD Investment Grade Corporate Bond ETF iShares Trust | 2026-05-31 | $10.1M | $8.9M | $471K |
| First Trust Enhanced Short Maturity ETF First Trust Exchange-Traded Fund IV | 2026-07-31 | $8.6M | $8.5M | $0 |
| Schwab 5-10 Year Corporate Bond ETF SCHWAB STRATEGIC TRUST | 2026-06-30 | $8.8M | $8.2M | $935K |
| VANGUARD LONG-TERM CORPORATE BOND INDEX FUND VANGUARD SCOTTSDALE FUNDS | 2026-05-31 | $7.4M | $6.9M | $265K |
| iShares 1-5 Year Investment Grade Corporate Bond ETF iShares Trust | 2026-05-31 | $7.1M | $6.8M | $50K |
| Baird Aggregate Bond Fund Baird Funds Inc | 2026-06-30 | $7.1M | $6.7M | $0 |
| iShares iBonds Dec 2027 Term Corporate ETF iShares Trust | 2026-07-31 | $5.9M | $5.9M | -$136K |
| SBH PLUS BOND FUND Segall Bryant & Hamill Trust | 2026-06-30 | $6.5M | $5.8M | $0 |
| Baird Core Plus Bond Fund Baird Funds Inc | 2026-06-30 | $5.5M | $5.1M | $0 |
| Invesco BulletShares 2027 Corporate Bond ETF Invesco Exchange-Traded Self-Indexed Fund Trust | 2026-05-31 | $5.0M | $5.0M | $70K |
| iShares Core Universal USD Bond ETF iShares Trust | 2026-07-31 | $6.0M | $4.9M | $345K |
| BlackRock Systematic Multi-Strategy Fund BlackRock Funds IV | 2026-06-30 | $5.0M | $4.9M | $0 |
| iShares iBonds Dec 2031 Term Corporate ETF iShares Trust | 2026-07-31 | $5.6M | $4.9M | $218K |
Largest exits in the latest quarter (fund held the bonds in its previous report, none now): First Trust Intermediate Duration Investment Grade Corporate ETF ($500K), THRIVENT MODERATE ALLOCATION PORTFOLIO ($326K), Virtus Seix Core Bond Fund ($221K), Franklin Investment Grade Corporate ETF ($200K), Virtus Seix Total Return Bond Fund ($187K), BondBloxx BBB Rated 1-5 Year Corporate Bond ETF ($145K), Franklin Long Duration Credit Fund ($60K), PGIM Active Aggregate Bond ETF ($45K), First American Multi-Manager Fixed-Income Fund ($35K), Goldman Sachs Access Investment Grade Corporate 1-5 Year Bond ETF ($30K).
ETFs holding these bonds
From each ETF's own latest N-PORT report: the issuer's bonds as a share of the ETF's net assets. A holdings list, not a recommendation.
| ETF | Report | Bonds | Face value | Value | % of net assets |
|---|---|---|---|---|---|
| BND VANGUARD TOTAL BOND MARKET INDEX FUND | 2026-06-30 | 7 | $69.8M | $59.5M | 0.01% |
| VCIT VANGUARD INTERMEDIATE-TERM CORPORATE BOND INDEX FUND | 2026-05-31 | 2 | $34.5M | $32.5M | 0.05% |
| LQD iShares iBoxx $ Investment Grade Corporate Bond ETF | 2026-05-31 | 4 | $28.3M | $25.1M | 0.08% |
| AGG iShares Core U.S. Aggregate Bond ETF | 2026-05-31 | 8 | $25.7M | $22.5M | 0.02% |
| VCSH VANGUARD SHORT-TERM CORPORATE BOND INDEX FUND | 2026-05-31 | 2 | $21.4M | $20.8M | 0.04% |
| BIV VANGUARD INTERMEDIATE-TERM BOND INDEX FUND | 2026-06-30 | 2 | $14.0M | $13.2M | 0.03% |
| IGIB iShares 5-10 Year Investment Grade Corporate Bond ETF | 2026-05-31 | 2 | $11.8M | $11.2M | 0.06% |
| VUSB VANGUARD ULTRA-SHORT BOND ETF | 2026-06-30 | 1 | $10.4M | $10.3M | 0.12% |
| USIG iShares Broad USD Investment Grade Corporate Bond ETF | 2026-05-31 | 8 | $10.1M | $8.9M | 0.05% |
| FTSM First Trust Enhanced Short Maturity ETF | 2026-07-31 | 1 | $8.6M | $8.5M | 0.13% |
| SCHI Schwab 5-10 Year Corporate Bond ETF | 2026-06-30 | 2 | $8.8M | $8.2M | 0.07% |
| VCLT VANGUARD LONG-TERM CORPORATE BOND INDEX FUND | 2026-05-31 | 2 | $7.4M | $6.9M | 0.08% |
| IGSB iShares 1-5 Year Investment Grade Corporate Bond ETF | 2026-05-31 | 3 | $7.1M | $6.8M | 0.03% |
| IBDS iShares iBonds Dec 2027 Term Corporate ETF | 2026-07-31 | 2 | $5.9M | $5.9M | 0.15% |
| BSCR Invesco BulletShares 2027 Corporate Bond ETF | 2026-05-31 | 1 | $5.0M | $5.0M | 0.11% |
Default risk, three ways
Stock market: distance-to-default
Distance-to-default 8.90: safer than 77% of companies (82th percentile in Basic Materials). Market-implied, prices to 2026-10-16, balance sheet 2026-06-30.
| Equity value | $30.18B |
| Debt barrier (short-term + ½ long-term debt) | $3.41B |
| Equity volatility (1 year) | 28.5% |
| Asset value / asset volatility (solved) | $33.44B / 25.8% |
| Risk-free rate (1-year Treasury) | 4.28% |
Bond market: priced-in odds
A 94 bp spread prices in about 1.6% a year of default odds (spread ÷ (1 − 40% recovery)). Fund-reported marks as of Jul 2026; the spread also pays for liquidity and risk premium, so this overstates actual defaults.
Accounts: Altman Z
Altman Z = 2.94 (latest balance sheet). A fundamentals cross-check; see methods for the variant used.
The stock side: 13F filings
What institutions report holding in MLM's stock and options. Options are reported at the value of the underlying shares, not the premium paid; 13F lists long positions only, lags 45 days after quarter-end, and does not show whether puts hedge a stock position.
| Quarter-end | Stock holders | Stock value | Put managers | Puts (underlying value) | Call managers | Calls (underlying value) | Convertible holders |
|---|---|---|---|---|---|---|---|
| 2026-09-30 filings still arriving | 135 | $600.7M | 0 | — | 0 | — | 0 |
| 2026-06-30 | 1,064 | $32.48B | 9 | $48.7M | 10 | $103.1M | 0 |
| 2026-03-31 | 1,056 | $27.67B | 12 | $39.7M | 12 | $92.7M | 0 |
| 2025-12-31 | 1,103 | $35.54B | 8 | $23.3M | 12 | $51.1M | 0 |
| 2025-09-30 | 1,040 | $36.01B | 9 | $48.6M | 11 | $82.6M | 0 |
| 2025-06-30 | 985 | $31.85B | 12 | $84.0M | 13 | $88.3M | 1 |
Sources: fund holdings and fund-reported marks from SEC Form N-PORT (published about 60 days after each month-end); 13F filings; House and Senate periodic transaction reports and OGE Form 278-T; Treasury yields from FRED. Findings from filings, not advice. How each number is computed.