Westlake Corporation bonds WLK
Who owns Westlake Corporation'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. WLK 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 |
|---|---|---|---|---|---|---|---|---|---|
| 960413AT9 | 3.6% fixed | 2026-08-15 | USD | 99.79 | 4.30% | 69 bp | 6 | $37.5M | Apr 2026 |
| 960413AV4 | 1.625% fixed | 2029-07-17 | EUR | 94.53 | 3.60% | — | 8 | $17.5M | Jul 2026 |
| 960413AW2 | 3.38% fixed | 2030-06-15 | USD | 94.33 | 5.01% | 72 bp | 7 | $31.9M | Jul 2026 |
| 960413BB7 | 5.55% fixed | 2035-11-15 | USD | 97.07 | 5.96% | 140 bp | 22 | $61.9M | Jul 2026 |
| 960413AY8 | 2.875% fixed | 2041-08-15 | USD | 66.94 | 6.31% | 145 bp | 8 | $14.9M | Jul 2026 |
| 960413AS1 | 5% fixed | 2046-08-15 | USD | 83.00 | 6.53% | 142 bp | 4 | $1.6M | Jul 2026 |
| 960413AU6 | 4.375% fixed | 2047-11-15 | USD | 74.12 | 6.67% | 156 bp | 6 | $1.3M | Jul 2026 |
| 960413AZ5 | 3.125% fixed | 2051-08-15 | USD | 58.45 | 6.51% | 141 bp | 4 | $765K | Jul 2026 |
| 960413BC5 | 6.375% fixed | 2055-11-15 | USD | 94.48 | 6.81% | 171 bp | 10 | $6.2M | Jul 2026 |
| 960413BA9 | 3.38% fixed | 2061-08-15 | USD | 56.13 | 6.61% | 151 bp | 5 | $928K | 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 | 9 | $136.9M | 83.00 | 6.51% | 142 bp | 22 |
| Jun 2026 | 9 | $227.9M | 86.05 | 6.17% | 126 bp | 39 |
| May 2026 | 9 | $127.6M | 86.20 | 6.14% | 118 bp | 21 |
| Apr 2026 | 10 | $184.4M | 89.83 | 6.22% | 134 bp | 22 |
| Mar 2026 | 11 | $248.6M | 92.84 | 6.22% | 139 bp | 39 |
| Feb 2026 | 10 | $229.2M | 91.72 | 6.04% | 134 bp | 19 |
| Jan 2026 | 10 | $176.8M | 91.01 | 6.17% | 140 bp | 20 |
| Dec 2025 | 11 | $237.9M | 94.54 | 6.21% | 146 bp | 46 |
| Nov 2025 | 10 | $200.8M | 90.33 | 6.09% | 152 bp | 18 |
| Oct 2025 | 8 | $147.5M | 84.03 | 5.96% | 137 bp | 11 |
| Sep 2025 | 9 | $94.8M | 88.18 | 6.00% | 131 bp | 16 |
| Aug 2025 | 8 | $117.3M | 82.64 | 6.09% | 129 bp | 16 |
| Jul 2025 | 8 | $146.5M | 81.96 | 6.09% | 123 bp | 13 |
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. 29 added, 37 cut, 15 new holders and 19 exits in the latest quarter.
| Fund series | Report | Face value | Value | Change in face value |
|---|---|---|---|---|
| VANGUARD TOTAL BOND MARKET II INDEX FUND VANGUARD BOND INDEX FUNDS | 2026-06-30 | $66.4M | $56.1M | $9.0M |
| VANGUARD TOTAL BOND MARKET INDEX FUND VANGUARD BOND INDEX FUNDS | 2026-06-30 | $64.5M | $53.5M | $2.8M |
| Core Fixed Income Fund Principal Funds, Inc | 2026-07-31 | $44.5M | $38.5M | $0 |
| VANGUARD INTERMEDIATE-TERM CORPORATE BOND INDEX FUND VANGUARD SCOTTSDALE FUNDS | 2026-05-31 | $37.8M | $37.7M | $13.1M |
| VANGUARD INTERMEDIATE-TERM INVESTMENT-GRADE FUND VANGUARD FIXED INCOME SECURITIES FUNDS | 2026-07-31 | $25.0M | $24.3M | $0 |
| LORD ABBETT BOND DEBENTURE FUND INC | 2026-06-30 | $22.8M | $22.6M | $0 |
| iShares Core U.S. Aggregate Bond ETF iShares Trust | 2026-05-31 | $19.4M | $15.5M | -$190K |
| Permanent Portfolio PERMANENT PORTFOLIO FAMILY OF FUNDS | 2026-07-31 | $15.5M | $14.6M | -$14.5M |
| VANGUARD SHORT-TERM CORPORATE BOND INDEX FUND VANGUARD SCOTTSDALE FUNDS | 2026-05-31 | $15.0M | $14.3M | $0 |
| DFA Investment Grade Portfolio DFA INVESTMENT DIMENSIONS GROUP INC | 2026-07-31 | $11.5M | $10.8M | -$300K |
| VANGUARD LONG-TERM CORPORATE BOND INDEX FUND VANGUARD SCOTTSDALE FUNDS | 2026-05-31 | $12.3M | $10.0M | $2.7M |
| VANGUARD INTERMEDIATE-TERM BOND INDEX FUND VANGUARD BOND INDEX FUNDS | 2026-06-30 | $9.1M | $9.0M | $135K |
| Fidelity U.S. Bond Index Fund Fidelity Salem Street Trust | 2026-05-31 | $10.9M | $8.1M | $0 |
| American Funds Multi-Sector Income Fund | 2026-06-30 | $7.7M | $7.6M | -$5.8M |
| iShares Broad USD Investment Grade Corporate Bond ETF iShares Trust | 2026-05-31 | $8.8M | $7.2M | $542K |
| Multi-Manager Total Return Bond Strategies Fund COLUMBIA FUNDS SERIES TRUST I | 2026-05-31 | $5.7M | $5.7M | $1.8M |
| Bond Fund of America | 2026-06-30 | $6.4M | $5.4M | $0 |
| VOYA INTERMEDIATE BOND FUND Voya Funds Trust | 2026-06-30 | $5.4M | $5.4M | new |
| NVIT Loomis Core Bond Fund Nationwide Variable Insurance Trust | 2026-06-30 | $4.7M | $4.7M | $0 |
| VANGUARD LONG-TERM BOND INDEX FUND VANGUARD BOND INDEX FUNDS | 2026-06-30 | $5.8M | $4.6M | -$175K |
| DFA Short-Duration Real Return Portfolio DFA INVESTMENT DIMENSIONS GROUP INC | 2026-07-31 | $4.1M | $4.5M | $0 |
| Fidelity Series Bond Index Fund Fidelity Salem Street Trust | 2026-05-31 | $4.9M | $4.3M | $0 |
| DFA Short-Term Extended Quality Portfolio DFA INVESTMENT DIMENSIONS GROUP INC | 2026-07-31 | $3.8M | $4.1M | -$400K |
| American High Income Trust | 2026-06-30 | $4.0M | $4.0M | $0 |
| iShares Core Universal USD Bond ETF iShares Trust | 2026-07-31 | $5.0M | $3.9M | $480K |
Largest exits in the latest quarter (fund held the bonds in its previous report, none now): JPMorgan Ultra-Short Income ETF ($77.3M), JPMorgan Managed Income Fund ($31.7M), T. Rowe Price International Bond Fund (USD Hedged) ($9.4M), Short-Term Income Fund ($7.9M), AB Ultra Short Income ETF ($7.6M), Neuberger Strategic Income Fund ($6.9M), Invesco BulletShares 2026 Corporate Bond ETF ($5.9M), iShares iBonds Dec 2026 Term Corporate ETF ($5.4M), Victory Income Fund ($3.5M), SA JPMorgan Ultra-Short Bond Portfolio ($2.6M).
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 | $64.5M | $53.5M | 0.01% |
| VCIT VANGUARD INTERMEDIATE-TERM CORPORATE BOND INDEX FUND | 2026-05-31 | 1 | $37.8M | $37.7M | 0.05% |
| AGG iShares Core U.S. Aggregate Bond ETF | 2026-05-31 | 8 | $19.4M | $15.5M | 0.01% |
| VCSH VANGUARD SHORT-TERM CORPORATE BOND INDEX FUND | 2026-05-31 | 1 | $15.0M | $14.3M | 0.03% |
| VCLT VANGUARD LONG-TERM CORPORATE BOND INDEX FUND | 2026-05-31 | 6 | $12.3M | $10.0M | 0.11% |
| BIV VANGUARD INTERMEDIATE-TERM BOND INDEX FUND | 2026-06-30 | 1 | $9.1M | $9.0M | 0.02% |
| USIG iShares Broad USD Investment Grade Corporate Bond ETF | 2026-05-31 | 8 | $8.8M | $7.2M | 0.04% |
| BLV VANGUARD LONG-TERM BOND INDEX FUND | 2026-06-30 | 5 | $5.8M | $4.6M | 0.05% |
| IUSB iShares Core Universal USD Bond ETF | 2026-07-31 | 8 | $5.0M | $3.9M | 0.01% |
| IGIB iShares 5-10 Year Investment Grade Corporate Bond ETF | 2026-05-31 | 1 | $3.8M | $3.8M | 0.02% |
| DFCF Dimensional Core Fixed Income ETF | 2026-07-31 | 2 | $3.6M | $3.5M | 0.03% |
| SCHI Schwab 5-10 Year Corporate Bond ETF | 2026-06-30 | 1 | $3.3M | $3.3M | 0.03% |
| CGMS Capital Group U.S. Multi-Sector Income ETF | 2026-06-30 | 1 | $2.7M | $2.7M | 0.05% |
| SPIB State Street(R) SPDR(R) Portfolio Intermediate Term Corporate Bond ETF | 2026-06-30 | 2 | $2.6M | $2.5M | 0.02% |
| IGLB iShares 10+ Year Investment Grade Corporate Bond ETF | 2026-05-31 | 6 | $3.2M | $2.4M | 0.09% |
Default risk, three ways
Stock market: distance-to-default
Distance-to-default 4.26: safer than 40% of companies (46th percentile in Basic Materials). Market-implied, prices to 2026-10-16, balance sheet 2026-06-30.
| Equity value | $7.98B |
| Debt barrier (short-term + ½ long-term debt) | $2.53B |
| Equity volatility (1 year) | 42.9% |
| Asset value / asset volatility (solved) | $10.40B / 32.9% |
| Risk-free rate (1-year Treasury) | 4.28% |
Bond market: priced-in odds
A 142 bp spread prices in about 2.4% 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 = 1.67 (latest balance sheet). A fundamentals cross-check; see methods for the variant used.
The stock side: 13F filings
What institutions report holding in WLK'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 | 25 | $2.1M | 0 | — | 0 | — | 0 |
| 2026-06-30 | 351 | $2.73B | 6 | $5.8M | 5 | $12.6M | 0 |
| 2026-03-31 | 326 | $4.43B | 10 | $16.9M | 9 | $26.7M | 0 |
| 2025-12-31 | 288 | $3.25B | 10 | $51.2M | 9 | $18.4M | 0 |
| 2025-09-30 | 296 | $3.02B | 9 | $57.7M | 9 | $17.7M | 0 |
| 2025-06-30 | 299 | $2.81B | 10 | $57.9M | 11 | $17.8M | 0 |
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.