Wellesley Asset Management
Follow13F filer, CIK 1533551, PORTSMOUTH, NH
Wellesley Asset Management reported $952,526,299 across 54 holdings for the quarter ended 2026-03-31, in a 13F-HR filed 2026-05-11. Its ten largest share positions make up 37.72% of the portfolio.
Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001533551-26-000003
- Period
- 2026-03-31
- Reported value
- $953M
- Holdings
- 54
- Top 10 weight
- 37.72%
- New
- 12
- Sold out
- 12
Holdings, Q1 2026
Share positions as resolved from 13F-HR 0001533551-26-000003, largest first. % of portfolio is the value over $952,526,299, the sum of the share positions whose value is usable for ratios (method).
| Security | History | Shares | Value | % of portfolio | Change | Latest event | Timeline |
|---|
Principal amounts
Notes and convertibles filed as a face amount (PRN). A face amount is never added to a share count (H6).
| Security | Type | Amount | Value | Change |
|---|---|---|---|---|
| BOX INCBOX INC NOTE 1.500% 9/1 | principal | 51,181,000 | $45.3M | +6,290,000 |
| VISHAY INTERTECHNOLOGY INCVISHAY INTERTECHNOLOGY INC NOTE 2.250% 9/1 | principal | 41,311,000 | $39.6M | +2,330,000 |
| SYNAPTICS INCSYNAPTICS INC NOTE 0.750%12/0 | principal | 34,325,000 | $36.2M | -4,841,000 |
| PG&E CORPPG&E CORP NOTE 4.250%12/0 | principal | 34,085,000 | $35.5M | -2,913,000 |
| HAEMONETICS CORP MASSHAEMONETICS CORP MASS NOTE 2.500% 6/0 | principal | 38,253,000 | $34.8M | -2,589,000 |
| ITRON INCITRON INC NOTE 1.375% 7/1 | principal | 35,995,000 | $34.4M | -136,000 |
| AKAMAI TECHNOLOGIES INCAKAMAI TECHNOLOGIES INC NOTE 0.375% 9/0 | principal | 29,005,000 | $33.9M | -393,000 |
| BLACKLINE INCBLACKLINE INC NOTE 1.000% 6/0 | principal | 36,922,000 | $33.7M | +2,358,000 |
| GREENBRIER COS INCGREENBRIER COS INC NOTE 2.875% 4/1 | principal | 28,469,000 | $33M | -4,977,000 |
| MERITAGE HOMES CORPMERITAGE HOMES CORP NOTE 1.750% 5/1 | principal | 33,972,000 | $32.9M | -172,000 |
| ON SEMICONDUCTOR CORPON SEMICONDUCTOR CORP NOTE 0.500% 3/0 | principal | 32,595,000 | $32M | -364,000 |
| LIVANOVA PLCLIVANOVA PLC NOTE 2.500% 3/1 | principal | 27,603,000 | $30.5M | -6,528,000 |
| GUIDEWIRE SOFTWARE INCGUIDEWIRE SOFTWARE INC NOTE 1.250%11/0 | principal | 32,234,000 | $30.3M | +28,234,000 |
| SHIFT4 PMTS INCSHIFT4 PMTS INC NOTE 0.500% 8/0 | principal | 31,386,000 | $29.5M | -44,000 |
| DATADOG INCDATADOG INC NOTE 12/0 | principal | 30,305,000 | $29.4M | +14,952,000 |
| PARSONS CORP DELPARSONS CORP DEL NOTE 2.625% 3/0 | principal | 29,685,000 | $28M | +5,913,000 |
| MICROCHIP TECHNOLOGY INC.MICROCHIP TECHNOLOGY INC. NOTE 0.750% 6/0 | principal | 27,869,000 | $27.7M | new |
| GLOBAL PMTS INCGLOBAL PMTS INC NOTE 1.500% 3/0 | principal | 32,113,000 | $26.7M | +5,269,000 |
| ENVISTA HOLDINGS CORPORATIONENVISTA HOLDINGS CORPORATION NOTE 1.750% 8/1 | principal | 25,419,000 | $25.4M | new |
| WINNEBAGO INDS INCWINNEBAGO INDS INC NOTE 3.250% 1/1 | principal | 26,517,000 | $24M | -946,000 |
| AMPHASTAR PHARMACEUTICALS INAMPHASTAR PHARMACEUTICALS IN NOTE 2.000% 3/1 | principal | 26,026,000 | $23.6M | -2,447,000 |
| PROGRESS SOFTWARE CORPPROGRESS SOFTWARE CORP NOTE 3.500% 3/0 | principal | 26,021,000 | $22.2M | +9,653,000 |
| REPLIGEN CORPREPLIGEN CORP NOTE 1.000%12/1 | principal | 24,481,000 | $22.1M | +359,000 |
| LEMAITRE VASCULAR INCLEMAITRE VASCULAR INC NOTE 2.500% 2/0 | principal | 19,835,000 | $21.2M | +16,585,000 |
| DROPBOX INCDROPBOX INC NOTE 3/0 | principal | 22,397,000 | $19.9M | +18,392,000 |
| AKAMAI TECHNOLOGIES INCAKAMAI TECHNOLOGIES INC NOTE 1.125% 2/1 | principal | 17,150,000 | $19.8M | -1,001,000 |
| LYFT INCLYFT INC Convertible | principal | 19,420,000 | $19.7M | -1,766,000 |
| LANTHEUS HLDGS INCLANTHEUS HLDGS INC Convertible | principal | 14,437,000 | $17.4M | -332,000 |
| OMNICELL COMOMNICELL COM NOTE 1.000%12/0 | principal | 19,126,000 | $17.3M | +2,232,000 |
| CMS ENERGY CORPCMS ENERGY CORP NOTE 3.375% 5/0 | principal | 13,390,000 | $15.2M | +11,080,000 |
| PPL CAP FDG INCPPL CAP FDG INC NOTE 2.875% 3/1 | principal | 9,249,000 | $10.9M | -3,932,000 |
| LCI INDSLCI INDS Convertible | principal | 8,200,000 | $9.93M | new |
| SPECTRUM BRANDS INCSPECTRUM BRANDS INC Convertible Bond | principal | 9,290,000 | $9.19M | +262,000 |
| AEROVIRONMENT INCAEROVIRONMENT INC NOTE 7/1 | principal | 7,916,000 | $7.81M | new |
| PACIRA BIOSCIENCES INCPACIRA BIOSCIENCES INC NOTE 2.125% 5/1 | principal | 7,219,000 | $7.02M | +2,206,000 |
| ARRAY TECHNOLOGIES INCARRAY TECHNOLOGIES INC NOTE 1.000%12/0 | principal | 7,369,000 | $6.69M | new |
| WORLD KINECT CORPORATIONWORLD KINECT CORPORATION Convertible | principal | 7,174,000 | $5.98M | +1,481,000 |
| JAZZ INVESTMENTS I LTDJAZZ INVESTMENTS I LTD Convertible | principal | 5,500,000 | $5.68M | new |
| ALARM COM HLDGS INCALARM COM HLDGS INC NOTE 2.250% 6/0 | principal | 5,649,000 | $5.23M | -11,814,000 |
| SOUTHERN COSOUTHERN CO NOTE 4.500% 6/1 | principal | 4,500,000 | $4.46M | new |
| LIVE NATION ENTERTAINMENT INLIVE NATION ENTERTAINMENT IN Convertible | principal | 4,600,000 | $4.45M | new |
| CENTERPOINT ENERGY INCCENTERPOINT ENERGY INC NOTE 4.250% 8/1 | principal | 3,662,000 | $4.35M | -73,000 |
| CHEESECAKE FACTORY INCCHEESECAKE FACTORY INC NOTE 2.000% 3/1 | principal | 6,000,000 | $4.1M | new |
| BIOMARIN PHARMACEUTICAL INCBIOMARIN PHARMACEUTICAL INC NOTE 1.250% 5/1 | principal | 4,015,000 | $3.88M | -43,000 |
| FLUOR CORPFLUOR CORP NOTE 1.125% 8/1 | principal | 4,195,000 | $3.36M | -307,000 |
| COGENT BIOSCIENCES INCCOGENT BIOSCIENCES INC NOTE 1.625%11/1 | principal | 4,625,000 | $3.28M | +625,000 |
| TETRA TECH INC NEWTETRA TECH INC NEW DBCV 2.250% 8/1 | principal | 4,884,000 | $3.06M | -6,000 |
| POST HLDGS INCPOST HLDGS INC NOTE 2.500% 8/1 | principal | 4,000,000 | $2.69M | 0 |
| NUTANIX INCNUTANIX INC NOTE 0.500%12/1 | principal | 4,000,000 | $2.5M | new |
| COLLEGIUM PHARMACEUTICAL INCCOLLEGIUM PHARMACEUTICAL INC NOTE 2.875% 2/1 | principal | 4,125,000 | $2.47M | +125,000 |
| IMMUNOCORE HLDGS PLCIMMUNOCORE HLDGS PLC NOTE 2.500% 2/0 | principal | 4,150,000 | $2.16M | 0 |
| WEC ENERGY GROUP INCWEC ENERGY GROUP INC NOTE 4.375% 6/0 | principal | 3,000,000 | $1.82M | 0 |
| BRIDGEBIO PHARMA INCBRIDGEBIO PHARMA INC Convertible | principal | 210,000 | $237K | new |
| BRIDGEBIO PHARMA INCBRIDGEBIO PHARMA INC NOTE 1.750% 3/0 | principal | 125,000 | $212K | new |
Sold out in Q1 2026
Positions in the previous quarter's report that this quarter's report no longer lists.
| Security | Shares before | Value before | Type |
|---|---|---|---|
| FORD MOTOR COMPANYFORD MOTOR COMPANY | 37,047,000 | $38.7M | principal |
| SPOTIFY USA INCSPOTIFY USA INC | 19,002,000 | $21.4M | principal |
| JBT MAREL CORPORATIONJBT MAREL CORPORATION | 19,653,000 | $20.2M | principal |
| ALLIANT ENERGY CORPALLIANT ENERGY CORP | 12,455,000 | $13M | principal |
| ENOVIS CORPORATIONENOVIS CORPORATION | 13,197,000 | $12.9M | principal |
| FIRSTENERGY CORPFIRSTENERGY CORP | 10,576,000 | $10.9M | principal |
| ORMAT TECHNOLOGIES INCORMAT TECHNOLOGIES INC | 6,070,000 | $8.32M | principal |
| CAPITAL SOUTHWEST CORPCAPITAL SOUTHWEST CORP | 4,462,000 | $4.42M | principal |
| MKS INC.MKS INC. | 2,750,000 | $3.63M | principal |
| TYLER TEX INDPT SCH DISTTYLER TEX INDPT SCH DIST | 3,500,000 | $3.5M | principal |
| DUKE ENERGY CORP NEWDUKE ENERGY CORP NEW | 3,000,000 | $3.1M | principal |
| CSG SYS INTL INCCSG SYS INTL INC | 2,484,000 | $2.94M | principal |
How Q1 2026 was built
Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).
| Filing | Role | Amendment | Filed | Accepted | Ingested |
|---|---|---|---|---|---|
| 13F-HR 0001533551-26-000003 | base | 2026-05-11 | acceptance time not in the bulk data set |