Tandem Diabetes Care, Inc. bonds TNDM
Who owns Tandem Diabetes Care, 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. TNDM 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 |
|---|---|---|---|---|---|---|---|---|---|
| 875372AD6 convertible | 1.5% fixed | 2029-03-15 | USD | 101.27 | — | — | 4 | $18.0M | Jul 2026 |
| 875372AE4 | 0% none | 2032-03-15 | USD | 89.27 | — | — | 3 | $11.2M | 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 | $29.2M | 95.27 | — | — | 4 |
| Jun 2026 | 2 | $1.9M | 88.08 | — | — | 2 |
| May 2026 | 1 | $3.6M | 97.63 | — | — | 4 |
| Apr 2026 | 2 | $40.7M | 95.26 | — | — | 9 |
| Mar 2026 | 2 | $29.7M | 94.33 | — | — | 4 |
| Feb 2026 | 1 | $5.0M | 111.71 | — | — | 4 |
| Jan 2026 | 1 | $13.5M | 101.47 | — | — | 3 |
| Dec 2025 | 1 | $840K | 101.44 | — | — | 1 |
| Nov 2025 | 1 | $3.2M | 100.50 | — | — | 2 |
| Oct 2025 | 1 | $10.7M | 91.38 | — | — | 2 |
| Aug 2025 | 1 | $2.7M | 86.24 | — | — | 2 |
| Jul 2025 | 1 | $16.5M | 92.55 | — | — | 4 |
| Jun 2025 | 1 | $882K | 96.45 | — | — | 2 |
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. 1 added, 5 cut, 2 new holders and 12 exits in the latest quarter.
| Fund series | Report | Face value | Value | Change in face value |
|---|---|---|---|---|
| Calamos Market Neutral Income Fund CALAMOS INVESTMENT TRUST/IL | 2026-07-31 | $13.7M | $13.3M | $0 |
| iShares Convertible Bond ETF iShares Trust | 2026-07-31 | $12.8M | $12.3M | $2.5M |
| Fidelity Convertible Securities Fund Fidelity Financial Trust | 2026-05-31 | $2.2M | $2.1M | $0 |
| WESTWOOD ALTERNATIVE INCOME FUND Ultimus Managers Trust | 2026-07-31 | $2.0M | $2.0M | $0 |
| AQR Diversified Arbitrage Fund AQR Funds | 2026-06-30 | $2.2M | $1.8M | new |
| Advent Convertible & Income Fund ADVENT CONVERTIBLE & INCOME FUND | 2026-07-31 | $1.6M | $1.4M | $0 |
| Fidelity Strategic Dividend and Income Fund Fidelity Salem Street Trust | 2026-05-31 | $863K | $842K | -$105K |
| Advent Convertible Bond ETF RBB Fund Trust | 2026-05-31 | $590K | $578K | new |
| PACE Alternative Strategies Investments PACE SELECT ADVISORS TRUST | 2026-07-31 | $194K | $195K | -$248K |
| JNL Multi-Manager Alternative Fund JNL Series Trust | 2026-06-30 | $98K | $93K | -$265K |
| Lazard Enhanced Opportunities Portfolio LAZARD FUNDS INC | 2026-06-30 | $46K | $44K | -$98K |
| Franklin Alternative Strategies Fund Franklin Alternative Strategies Funds | 2026-05-29 | $29K | $28K | -$108K |
| Virtus Income & Growth Fund Virtus Investment Trust | 2026-06-30 | $0 | $0 | -$13.5M |
| Virtus Convertible Fund Virtus Strategy Trust | 2026-06-30 | $0 | $0 | -$12.8M |
| Virtus Convertible & Income Fund | 2026-07-31 | $0 | $0 | -$3.3M |
| Virtus Dividend, Interest & Premium Strategy Fund | 2026-07-31 | $0 | $0 | -$2.7M |
| Virtus Convertible & Income Fund II | 2026-07-31 | $0 | $0 | -$2.7M |
| Virtus Equity & Convertible Income Fund | 2026-07-31 | $0 | $0 | -$2.6M |
| Virtus Diversified Income & Convertible Fund | 2026-07-31 | $0 | $0 | -$2.0M |
| Voya High Yield Portfolio Voya Investors Trust | 2026-06-30 | $0 | $0 | -$1.1M |
| Voya Global Income & Growth Fund Voya Equity Trust | 2026-05-31 | $0 | $0 | -$1.1M |
| Defensive Market Strategies Fund GuideStone Funds | 2026-06-30 | $0 | $0 | -$967K |
| Voya High Yield Bond Fund Voya Funds Trust | 2026-06-30 | $0 | $0 | -$825K |
| Harbor Ares Systematic Convertible Securities Fund HARBOR FUNDS | 2026-07-31 | $0 | $0 | -$100K |
Largest exits in the latest quarter (fund held the bonds in its previous report, none now): Virtus Income & Growth Fund ($13.5M), Virtus Convertible Fund ($12.8M), Virtus Convertible & Income Fund ($3.3M), Virtus Dividend, Interest & Premium Strategy Fund ($2.7M), Virtus Convertible & Income Fund II ($2.7M), Virtus Equity & Convertible Income Fund ($2.6M), Virtus Diversified Income & Convertible Fund ($2.0M), Voya High Yield Portfolio ($1.1M), Voya Global Income & Growth Fund ($1.1M), Defensive Market Strategies Fund ($967K).
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.
Default risk, three ways
Stock market: distance-to-default
Distance-to-default 2.40: safer than 18% of companies (20th percentile in Healthcare). Market-implied, prices to 2026-10-16, balance sheet 2026-06-30.
| Equity value | $1.14B |
| Debt barrier (short-term + ½ long-term debt) | $301.3M |
| Equity volatility (1 year) | 74.1% |
| Asset value / asset volatility (solved) | $1.43B / 59.2% |
| 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 = 0.42 (latest balance sheet). A fundamentals cross-check; see methods for the variant used.
The stock side: 13F filings
What institutions report holding in TNDM'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 | 20 | $37.6M | 0 | — | 0 | — | 0 |
| 2026-06-30 | 265 | $1.18B | 10 | $8.2M | 10 | $90.2M | 28 |
| 2026-03-31 | 258 | $1.33B | 9 | $7.7M | 9 | $106.2M | 14 |
| 2025-12-31 | 257 | $1.62B | 11 | $9.8M | 10 | $66.7M | 24 |
| 2025-09-30 | 244 | $898.0M | 10 | $6.1M | 9 | $36.3M | 20 |
| 2025-06-30 | 261 | $1.50B | 8 | $4.5M | 10 | $54.1M | 24 |
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.