Alnylam Pharmaceuticals, Inc. bonds ALNY
Who owns Alnylam 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. ALNY 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 |
|---|---|---|---|---|---|---|---|---|---|
| 02043QAB3 convertible | 1% fixed | 2027-09-15 | USD | 103.46 | — | — | 8 | $26.9M | Jul 2026 |
| 02043QAC1 convertible | 0% none | 2028-09-15 | USD | 91.19 | — | — | 12 | $54.9M | 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 | $81.8M | 97.33 | — | — | 12 |
| Jun 2026 | 2 | $33.2M | 106.24 | — | — | 15 |
| May 2026 | 2 | $17.1M | 106.43 | — | — | 5 |
| Apr 2026 | 2 | $104.6M | 108.06 | — | — | 12 |
| Mar 2026 | 2 | $42.6M | 110.67 | — | — | 12 |
| Feb 2026 | 2 | $12.2M | 111.66 | — | — | 4 |
| Jan 2026 | 2 | $131.0M | 112.16 | — | — | 19 |
| Dec 2025 | 2 | $78.0M | 121.74 | — | — | 13 |
| Nov 2025 | 2 | $18.7M | 131.26 | — | — | 5 |
| Oct 2025 | 2 | $167.3M | 132.42 | — | — | 31 |
| Sep 2025 | 2 | $109.4M | 131.89 | — | — | 16 |
| Aug 2025 | 1 | $84.4M | 162.54 | — | — | 7 |
| Jul 2025 | 1 | $130.1M | 147.17 | — | — | 25 |
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. 2 added, 8 cut, 12 new holders and 5 exits in the latest quarter.
| Fund series | Report | Face value | Value | Change in face value |
|---|---|---|---|---|
| iShares Convertible Bond ETF iShares Trust | 2026-07-31 | $21.5M | $20.6M | -$7.8M |
| State Street(R) SPDR(R) Bloomberg Convertible Securities ETF SPDR SERIES TRUST | 2026-06-30 | $15.6M | $15.9M | -$6.2M |
| Franklin Convertible Securities Fund Franklin Investors Securities Trust | 2026-07-31 | $15.6M | $14.2M | $0 |
| Calamos Market Neutral Income Fund CALAMOS INVESTMENT TRUST/IL | 2026-07-31 | $12.4M | $11.3M | $0 |
| Fidelity SAI Convertible Arbitrage Fund Fidelity Greenwood Street Trust | 2026-07-31 | $8.5M | $8.8M | $0 |
| Fidelity Convertible Securities Fund Fidelity Financial Trust | 2026-05-31 | $7.0M | $7.9M | $0 |
| NYLIM VP MacKay Convertible Portfolio NYLIM VP FUNDS TRUST | 2026-06-30 | $5.7M | $6.9M | $0 |
| Putnam Convertible Securities Fund | 2026-07-31 | $6.7M | $6.3M | $0 |
| JPMorgan Strategic Income Opportunities Fund JPMorgan Trust I | 2026-05-31 | $6.4M | $5.9M | new |
| NYLIM MacKay Convertible Fund NYLIM FUNDS | 2026-07-31 | $5.5M | $5.7M | $0 |
| Miller Convertible Bond Fund Miller Investment Trust | 2026-07-31 | $6.0M | $5.5M | -$2.3M |
| Miller Intermediate Bond Fund Miller Investment Trust | 2026-07-31 | $4.5M | $4.1M | $1.0M |
| Fidelity Strategic Dividend and Income Fund Fidelity Salem Street Trust | 2026-05-31 | $2.6M | $2.9M | -$310K |
| Empower High Yield Bond Fund EMPOWER FUNDS, INC. | 2026-06-30 | $2.7M | $2.6M | $0 |
| WESTWOOD ALTERNATIVE INCOME FUND Ultimus Managers Trust | 2026-07-31 | $2.1M | $2.2M | $0 |
| Invesco Convertible Securities Fund AIM Growth Series (Invesco Growth Series) | 2026-06-30 | $1.5M | $1.8M | -$1.0M |
| Asset Allocation Fund AMERICAN FUNDS INSURANCE SERIES | 2026-06-30 | $1.2M | $1.4M | new |
| Calamos Global Convertible Fund CALAMOS INVESTMENT TRUST/IL | 2026-07-31 | $1.5M | $1.4M | $0 |
| Calvert Bond Fund Calvert Social Investment Fund | 2026-06-30 | $1.3M | $1.2M | $0 |
| Eaton Vance Total Return Bond Fund Eaton Vance Mutual Funds Trust | 2026-06-30 | $900K | $833K | $0 |
| THE HARTFORD INFLATION PLUS FUND HARTFORD MUTUAL FUNDS, INC | 2026-07-31 | $570K | $519K | $0 |
| Calvert Income Fund Calvert Fund | 2026-06-30 | $500K | $463K | $0 |
| Multi-Asset Strategy Fund RUSSELL INVESTMENT CO | 2026-07-31 | $500K | $456K | new |
| Putnam Diversified Income Trust | 2026-06-30 | $405K | $375K | $0 |
| First Trust SSI Strategic Convertible Securities ETF First Trust Exchange-Traded Fund IV | 2026-07-31 | $304K | $315K | $0 |
Largest exits in the latest quarter (fund held the bonds in its previous report, none now): Global Opportunities Portfolio ($3.4M), Miller Market Neutral Income Fund ($2.5M), BNY Mellon Core Plus Fund ($600K), Lazard US Convertibles Portfolio ($164K), State Street(R) Loomis Sayles Opportunistic Bond ETF ($11K).
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 | 2 | $21.5M | $20.6M | 0.29% |
| CWB State Street(R) SPDR(R) Bloomberg Convertible Securities ETF | 2026-06-30 | 2 | $15.6M | $15.9M | 0.26% |
| FCVT First Trust SSI Strategic Convertible Securities ETF | 2026-07-31 | 1 | $304K | $315K | 0.31% |
| XAGG Eaton Vance Income Opportunities ETF | 2026-06-30 | 1 | $210K | $194K | 0.02% |
| CGHY Capital Group High Yield Bond ETF | 2026-06-30 | 1 | $118K | $142K | 0.13% |
| NFLT Virtus Newfleet Multi-Sector Bond ETF | 2026-07-31 | 1 | $57K | $59K | 0.01% |
Default risk, three ways
Stock market: distance-to-default
Distance-to-default 8.01: safer than 72% of companies (68th percentile in Healthcare). Market-implied, prices to 2026-10-16, balance sheet 2026-06-30.
| Equity value | $31.25B |
| Debt barrier (short-term + ½ long-term debt) | $505.5M |
| Equity volatility (1 year) | 51.4% |
| Asset value / asset volatility (solved) | $31.74B / 50.6% |
| 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'' = 1.62 (latest balance sheet). A fundamentals cross-check; see methods for the variant used.
The stock side: 13F filings
What institutions report holding in ALNY'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 | 82 | $112.7M | 1 | $14.7M | 0 | — | 3 |
| 2026-06-30 | 778 | $37.80B | 20 | $212.9M | 22 | $451.7M | 42 |
| 2026-03-31 | 771 | $36.05B | 21 | $204.8M | 21 | $448.8M | 38 |
| 2025-12-31 | 835 | $51.07B | 27 | $453.8M | 25 | $723.9M | 37 |
| 2025-09-30 | 806 | $57.34B | 28 | $636.8M | 22 | $554.6M | 42 |
| 2025-06-30 | 641 | $40.53B | 23 | $196.1M | 26 | $183.4M | 63 |
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.