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Wellesley Asset Management
Period ended Sep 30, 2026 · Latest filing Nov 12, 2026
These quarterly holdings are delayed and may not include all assets or short positions.
Values are from the reporting date, not current prices or purchase costs.
The same security may appear in multiple rows.
Source: SEC
Reported portfolio value
Quarter-end reported holdings; not current value or investment performance.
View reported values
- Sep 30, 2026: $1,165,444,867
More quarters will appear as history becomes available.
Top holdings
Top 10 at Sep 30, 2026. Matching entries are combined; security classes and options remain separate. Shares exclude principal amounts; option shares reflect the reported underlying amount.
View top holdings values
- HAE US · 47270 · 405024AD2 · principal: $36,415,402
- LIVN US · 47192 · 53802LAB8 · principal: $35,496,331
- AVAV US · 47679 · 008073AA6 · principal: $34,880,116
- BL US · 47270 · 09239BAF6 · principal: $34,395,058
- MMSI US · 47150 · 589889AB0 · principal: $33,126,047
- PSN US · 47178 · 70202LAD4 · principal: $32,930,845
- MTH US · 46888 · 59001ABF8 · principal: $32,023,120
- SITM US · 48014 · 82982TAA4 · principal: $31,634,267
- BOX US · 47376 · 10316TAD6 · principal: $31,247,157
- ITRI US · 47679 · 465741AQ9 · principal: $30,936,600
Reported holdings
78 reported entries| Issuer | Class | CUSIP | Type | Shares / principal | Reported value (USD) |
|---|---|---|---|---|---|
| HAE US | 47270 | 405024AD2 | — | 33,839,000 principal | $36,415,402 |
| LIVN US | 47192 | 53802LAB8 | — | 30,615,000 principal | $35,496,331 |
| AVAV US | 47679 | 008073AA6 | — | 40,024,000 principal | $34,880,116 |
| BL US | 47270 | 09239BAF6 | — | 38,183,000 principal | $34,395,058 |
| MMSI US | 47150 | 589889AB0 | — | 30,045,000 principal | $33,126,047 |
| PSN US | 47178 | 70202LAD4 | — | 34,841,000 principal | $32,930,845 |
| MTH US | 46888 | 59001ABF8 | — | 33,224,000 principal | $32,023,120 |
| SITM US | 48014 | 82982TAA4 | — | 30,817,000 principal | $31,634,267 |
| BOX US | 47376 | 10316TAD6 | — | 29,871,000 principal | $31,247,157 |
| ITRI US | 47679 | 465741AQ9 | — | 34,019,000 principal | $30,936,600 |
| PCG US | 46722 | 69331CAL2 | — | 31,413,000 principal | $30,791,023 |
| SO US | 46919 | 842587ED5 | — | 30,695,000 principal | $29,837,689 |
| DBX US | 46813 | 26210CAD6 | — | 28,669,000 principal | $29,457,113 |
| GBX US | 46858 | 393657AM3 | — | 26,712,000 principal | $27,938,882 |
| MCHP US | 47635 | 595017BG8 | — | 26,625,000 principal | $27,307,665 |
| GWRE US | 47423 | 40171VAC4 | — | 27,031,000 principal | $27,127,098 |
| GPN US | 47908 | 37940XAU6 | — | 30,124,000 principal | $26,787,165 |
| RGEN US | 47102 | 759916AD1 | — | 24,848,000 principal | $25,854,977 |
| TVTX US | 48349 | 89422GAB3 | — | 23,246,000 principal | $25,776,903 |
| DASH US | 47618 | 25809KAB1 | — | 26,386,000 principal | $25,102,456 |
| NVST US | 46980 | 29415FAD6 | — | 25,445,000 principal | $24,372,748 |
| OMCL US | 47453 | 68213NAF6 | — | 25,054,000 principal | $23,491,111 |
| DXCM US | 46888 | 252131AM9 | — | 24,465,000 principal | $23,186,948 |
| DDOG US | 47453 | 23804LAD5 | — | 15,924,000 principal | $23,152,464 |
| WGO US | 47498 | 974637AF7 | — | 24,230,000 principal | $21,566,760 |
| WEC US | 46905 | 92939UAT3 | — | 21,570,000 principal | $21,363,902 |
| AKAM US | 46631 | 00971TAL5 | — | 19,035,000 principal | $21,262,193 |
| EEFT US | 47757 | 298736AN9 | — | 26,040,000 principal | $20,622,594 |
| LNT US | 46903 | 018802AE8 | — | 21,801,000 principal | $20,285,675 |
| LMAT US | 47515 | 525558AB8 | — | 20,610,000 principal | $19,529,599 |
| PRGS US | 47543 | 743312AD2 | — | 20,007,000 principal | $19,170,107 |
| CMS US | 46874 | 125896BX7 | — | 20,432,000 principal | $18,747,992 |
| NTNX US | 47467 | 67059NAK4 | — | 15,976,000 principal | $17,517,606 |
| JBTM US | 47741 | 477839AE4 | — | 19,622,000 principal | $15,694,541 |
| TTEK US | 46980 | 88162GAB9 | — | 15,406,000 principal | $14,403,943 |
| PCRX US | 47253 | 695127AJ9 | — | 14,062,000 principal | $13,877,156 |
| ON US | 47178 | 682189AU9 | — | 12,558,000 principal | $13,517,119 |
| AMPH US | 47192 | 03209RAB9 | — | 14,290,000 principal | $13,357,506 |
| JD US | 47270 | 47215PAJ5 | — | 13,205,000 principal | $12,906,897 |
| ALRM US | 47270 | 011642AD7 | — | 12,576,000 principal | $12,144,456 |
| LYV US | 47498 | 538034BC2 | — | 10,950,000 principal | $10,867,291 |
| AVT US | 47727 | 053807AZ6 | — | 6,910,000 principal | $10,660,679 |
| WKC US | 46935 | 98149GAB6 | — | 9,166,000 principal | $10,388,235 |
| FIVN US | 47192 | 338307AF8 | — | 11,000,000 principal | $10,289,235 |
| LYFT US | 47178 | 55087PAD6 | — | 9,486,000 principal | $9,811,370 |
| ARRY US | 48030 | 04271TAD2 | — | 14,450,000 principal | $9,760,495 |
| SYNA US | 48183 | 87157DAJ8 | — | 9,015,000 principal | $9,705,021 |
| ALNY US | 47011 | 02043QAD9 | — | 10,531,000 principal | $9,644,079 |
| BMRN US | 46522 | 09061GAK7 | — | 9,643,000 principal | $9,419,765 |
| PPL US | 46827 | 69352PAS2 | — | 8,219,000 principal | $8,618,854 |
| AXON US | 48106 | 05464CAE1 | — | 10,600,000 principal | $8,465,711 |
| PBI US | 47710 | 724479AS9 | — | 7,650,000 principal | $8,229,792 |
| FLR US | 47345 | 343412AJ1 | — | 7,845,000 principal | $7,968,368 |
| ETSY US | 47649 | 29786AAQ9 | — | 7,935,000 principal | $7,183,133 |
| LCII US | 47543 | 501812AD3 | — | 6,800,000 principal | $6,722,038 |
| SPB US | 47270 | 84762LAZ8 | — | 8,472,000 principal | $6,682,206 |
| ORA US | 47922 | 686688AD4 | — | 9,000,000 principal | $6,213,261 |
| COGT US | 48167 | 19240QAA0 | — | 7,550,000 principal | $6,013,841 |
| IMCR US | 47515 | 45258DAB1 | — | 7,650,000 principal | $5,112,985 |
| CNP US | 46966 | 15189TBR7 | — | 6,325,000 principal | $4,257,811 |
| COLL US | 47164 | 19459JAC8 | — | 5,500,000 principal | $3,484,163 |
| RVMD US | 48700 | 76155XAA8 | — | 2,670,000 principal | $3,067,621 |
| NUVB US | 48396 | 67080NAA9 | — | 3,500,000 principal | $2,691,701 |
| AKAM US | 47164 | 00971TAN1 | — | 1,892,000 principal | $2,101,889 |
| NVMI US | 47741 | 66982MAB0 | — | 575,000 principal | $808,988 |
| NET US | 47649 | 18915MAF4 | — | 500,000 principal | $793,203 |
| BBIO US | 47908 | 10806XAJ1 | — | 500,000 principal | $763,105 |
| POST US | 46614 | 737446AT1 | — | 753,000 principal | $741,547 |
| UBER US | 47088 | 90353TAM2 | — | 650,000 principal | $740,532 |
| ON US | 46508 | 682189AS4 | — | 450,000 principal | $693,563 |
| WEC US | 46539 | 92939UAP1 | — | 600,000 principal | $643,314 |
| VSH US | 47741 | 928298AR9 | — | 450,000 principal | $609,239 |
| LGND US | 47757 | 53220KAH1 | — | 350,000 principal | $572,441 |
| NTNX US | 46661 | 67059NAH1 | — | 400,000 principal | $525,894 |
| TMDX US | 46905 | 89377MAB5 | — | 450,000 principal | $517,030 |
| BURL US | 46736 | 122017AD8 | — | 350,000 principal | $491,617 |
| GVA US | 47649 | 387328AF4 | — | 300,000 principal | $475,887 |
| ANIP US | 47362 | 00182CAC7 | — | 400,000 principal | $471,732 |