Mirum Pharmaceuticals, Inc. bonds MIRM
Who owns Mirum Pharmaceuticals, 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. MIRM 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 |
|---|---|---|---|---|---|---|---|---|---|
| 604749AB7 convertible | 4% fixed | 2029-05-01 | USD | 336.46 | — | — | 3 | $10.9M | Jul 2026 |
| 604749AC5 convertible | 0% none | 2032-06-01 | USD | 101.98 | — | — | 17 | $107.9M | Jul 2026 |
Spread history
Median spread of the US-dollar bonds over Treasuries, month-ends with complete filings. Fund-reported.
Not enough US-dollar bonds with a yield.
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 | 2 | $118.7M | 219.22 | — | — | 17 |
| Jun 2026 | 2 | $38.8M | 239.04 | — | — | 13 |
| May 2026 | 2 | $23.2M | 211.99 | — | — | 6 |
| Apr 2026 | 1 | $64.3M | 314.58 | — | — | 8 |
| Mar 2026 | 1 | $37.4M | 298.92 | — | — | 8 |
| Feb 2026 | 1 | $16.4M | 298.43 | — | — | 4 |
| Jan 2026 | 1 | $65.3M | 331.46 | — | — | 8 |
| Dec 2025 | 1 | $43.5M | 258.25 | — | — | 8 |
| Nov 2025 | 1 | $12.6M | 240.72 | — | — | 4 |
| Oct 2025 | 1 | $44.3M | 238.97 | — | — | 9 |
| Sep 2025 | 1 | $43.6M | 240.59 | — | — | 7 |
| Aug 2025 | 1 | $10.5M | 240.90 | — | — | 3 |
| Jul 2025 | 1 | $63.0M | 179.65 | — | — | 8 |
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. 11 added, 3 cut, 22 new holders and 5 exits in the latest quarter.
| Fund series | Report | Face value | Value | Change in face value |
|---|---|---|---|---|
| Fidelity SAI Convertible Arbitrage Fund Fidelity Greenwood Street Trust | 2026-07-31 | $17.5M | $24.4M | new |
| NYLIM MacKay Convertible Fund NYLIM FUNDS | 2026-07-31 | $22.4M | $22.9M | $9.6M |
| NYLIM VP MacKay Convertible Portfolio NEW YORK LIFE INVESTMENTS VP FUNDS TRUST | 2026-06-30 | $15.6M | $16.9M | $8.0M |
| iShares Convertible Bond ETF iShares Trust | 2026-07-31 | $14.2M | $14.5M | $8.6M |
| Columbia Convertible Securities Fund COLUMBIA FUNDS SERIES TRUST | 2026-05-31 | $14.0M | $14.0M | new |
| CALAMOS STRATEGIC TOTAL RETURN FUND | 2026-07-31 | $13.6M | $13.9M | new |
| Calamos Growth & Income Fund CALAMOS INVESTMENT TRUST/IL | 2026-07-31 | $10.4M | $10.6M | new |
| State Street(R) SPDR(R) Bloomberg Convertible Securities ETF SPDR SERIES TRUST | 2026-06-30 | $9.4M | $10.2M | new |
| Lord Abbett Convertible Fund LORD ABBETT INVESTMENT TRUST | 2026-05-31 | $6.0M | $6.0M | $3.8M |
| CALAMOS CONVERTIBLE & HIGH INCOME FUND | 2026-07-31 | $5.8M | $5.9M | new |
| Calamos Convertible Fund CALAMOS INVESTMENT TRUST/IL | 2026-07-31 | $5.5M | $5.6M | new |
| CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND | 2026-07-31 | $5.5M | $5.6M | new |
| Lord Abbett Short Duration High Yield Fund LORD ABBETT TRUST I | 2026-07-31 | $5.2M | $5.3M | new |
| Calamos Dynamic Convertible & Income Fund | 2026-07-31 | $4.5M | $4.6M | new |
| Buffalo High Yield Fund Buffalo Funds | 2026-06-30 | $1.0M | $3.7M | $0 |
| Invesco Convertible Securities Fund AIM Growth Series (Invesco Growth Series) | 2026-06-30 | $2.5M | $2.7M | $1.4M |
| Janus Henderson High-Yield Fund Janus Investment Fund | 2026-06-30 | $1.9M | $2.0M | new |
| Fidelity Convertible Securities Fund Fidelity Financial Trust | 2026-05-31 | $2.0M | $2.0M | $34K |
| JNL Multi-Manager Alternative Fund JNL Series Trust | 2026-06-30 | $829K | $1.8M | -$591K |
| Advent Convertible & Income Fund ADVENT CONVERTIBLE & INCOME FUND | 2026-07-31 | $1.1M | $1.7M | $787K |
| Calamos Global Dynamic Income Fund | 2026-07-31 | $1.2M | $1.3M | new |
| ABSOLUTE CONVERTIBLE ARBITRAGE FUND Unified Series Trust | 2026-06-30 | $1.0M | $1.1M | new |
| Calamos Global Opportunities Fund CALAMOS INVESTMENT TRUST/IL | 2026-07-31 | $901K | $918K | new |
| Fidelity Strategic Dividend and Income Fund Fidelity Salem Street Trust | 2026-05-31 | $852K | $849K | $20K |
| PACE Alternative Strategies Investments PACE SELECT ADVISORS TRUST | 2026-07-31 | $343K | $653K | -$189K |
Largest exits in the latest quarter (fund held the bonds in its previous report, none now): Putnam Convertible Securities Fund ($1.0M), American Beacon SSI Alternative Income Fund ($704K), Empower High Yield Bond Fund ($461K), Strategic Alternatives Fund ($138K), Calamos Convertible Equity Alternative ETF ($47K).
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 |
|---|---|---|---|---|---|
| ICVT iShares Convertible Bond ETF | 2026-07-31 | 1 | $14.2M | $14.5M | 0.20% |
| CWB State Street(R) SPDR(R) Bloomberg Convertible Securities ETF | 2026-06-30 | 1 | $9.4M | $10.2M | 0.16% |
| FCVT First Trust SSI Strategic Convertible Securities ETF | 2026-07-31 | 1 | $563K | $576K | 0.57% |
| NFLT Virtus Newfleet Multi-Sector Bond ETF | 2026-07-31 | 1 | $62K | $63K | 0.01% |
Default risk, three ways
Stock market: distance-to-default
Distance-to-default 5.94: safer than 58% of companies (54th percentile in Healthcare). Market-implied, prices to 2026-10-16, balance sheet 2026-06-30.
| Equity value | $5.34B |
| Debt barrier (short-term + ½ long-term debt) | $375.0M |
| Equity volatility (1 year) | 47.8% |
| Asset value / asset volatility (solved) | $5.70B / 44.8% |
| Risk-free rate (1-year Treasury) | 4.28% |
Bond market: priced-in odds
No US-dollar bond with a yield to compute it from.
Accounts: Altman Z
Altman Z'' = -7.33 (latest balance sheet). A fundamentals cross-check; see methods for the variant used.
The stock side: 13F filings
What institutions report holding in MIRM'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 | 21 | $14.8M | 0 | — | 0 | — | 1 |
| 2026-06-30 | 320 | $8.04B | 6 | $6.2M | 6 | $12.4M | 19 |
| 2026-03-31 | 297 | $5.68B | 4 | $1.5M | 5 | $19.9M | 30 |
| 2025-12-31 | 277 | $4.68B | 2 | $877K | 5 | $4.5M | 38 |
| 2025-09-30 | 270 | $4.10B | 4 | $7.7M | 6 | $6.5M | 38 |
| 2025-06-30 | 211 | $2.72B | 4 | $5.1M | 5 | $1.4M | 38 |
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.