Investor
Wellesley Asset Management
CIK 0001533551 · filed 2026-05-11 · SEC filing
13F book
$952.5M
Positions
54
12 new · 12 sold
Largest name
4.8%
Box Inc
Est. mark
−$39.1M
Price effect on 42 names still held. Flow $30.8M.
| Name | Ticker | Shares | Value | Weight | Est. mark | Change |
|---|---|---|---|---|---|---|
| Box Inc | — | 51.2M | $45.3M | 4.8% | −$3.59M | Added$1.98M |
| Vishay Intertechnology Inc | VSH | 41.3M | $39.6M | 4.2% | $1.78M | Added$4.01M |
| Synaptics Inc | SYNA | 34.3M | $36.2M | 3.8% | −$404.3K | Cut−$5.56M |
| Pg&E Corp | — | 34.1M | $35.5M | 3.7% | $317K | Cut−$2.69M |
| Haemonetics Corp Mass | — | 38.3M | $34.8M | 3.7% | −$4.89M | Cut−$7.57M |
| Itron, Inc. | ITRI | 36M | $34.4M | 3.6% | −$2.36M | Cut−$2.5M |
| Akamai Technologies Inc | AKAM | 29M | $33.9M | 3.6% | $4.87M | Cut$4.48M |
| Blackline, Inc. | BL | 36.9M | $33.7M | 3.5% | −$4.63M | Added−$2.48M |
| Greenbrier Cos Inc | — | 28.5M | $33M | 3.5% | $2.11M | Cut−$3.29M |
| Meritage Homes Corp | MTH | 34M | $32.9M | 3.5% | −$620K | Cut−$789.7K |
| On Semiconductor Corp | ON | 32.6M | $32M | 3.4% | $722.3K | Cut$372.8K |
| Livanova Plc | LIVN | 27.6M | $30.5M | 3.2% | −$1.27M | Cut−$8.78M |
| Guidewire Software, Inc. | GWRE | 32.2M | $30.3M | 3.2% | −$524.7K | Added$26M |
| Shift4 Pmts Inc | — | 31.4M | $29.5M | 3.1% | −$576.6K | Cut−$618.7K |
| Datadog, Inc. | DDOG | 30.3M | $29.4M | 3.1% | −$350.5K | Added$14.2M |
| Parsons Corp Del | — | 29.7M | $28M | 2.9% | −$2.15M | Added$3.42M |
| Microchip Technology Inc. | — | 27.9M | $27.7M | 2.9% | — | New |
| Global Pmts Inc | — | 32.1M | $26.7M | 2.8% | −$1.75M | Added$2.64M |
| Envista Holdings Corp | NVST | 25.4M | $25.4M | 2.7% | — | New |
| Winnebago Inds Inc | — | 26.5M | $24M | 2.5% | −$1.04M | Cut−$1.93M |
| Amphastar Pharmaceuticals In | — | 26M | $23.6M | 2.5% | −$407.7K | Cut−$2.67M |
| Progress Software Corp | — | 26M | $22.2M | 2.3% | −$2.45M | Added$5.78M |
| Repligen Corp | RGEN | 24.5M | $22.1M | 2.3% | −$4.75M | Added−$4.43M |
| Lemaitre Vascular Inc | LMAT | 19.8M | $21.2M | 2.2% | $243.2K | Added$18M |
| Dropbox, Inc. | DBX | 22.4M | $19.9M | 2.1% | −$439.4K | Added$15.9M |
| Akamai Technologies Inc | AKAM | 17.1M | $19.8M | 2.1% | $2.88M | Cut$1.9M |
| Lyft, Inc. | LYFT | 19.4M | $19.7M | 2.1% | −$3.9M | Cut−$6.05M |
| Lantheus Hldgs Inc | — | 14.4M | $17.4M | 1.8% | $784.1K | Cut$403.1K |
| Omnicell, Inc. | OMCL | 19.1M | $17.3M | 1.8% | −$2.99M | Added−$976.8K |
| Cms Energy Corp | — | 13.4M | $15.2M | 1.6% | $136.7K | Added$12.7M |
| Ppl Cap Fdg Inc | — | 9.25M | $10.9M | 1.1% | $712.8K | Cut−$3.61M |
| Lci Inds | — | 8.2M | $9.93M | 1.0% | — | New |
| Spectrum Brands Inc | — | 9.29M | $9.19M | 1.0% | $351.9K | Added$611K |
| Aerovironment Inc | AVAV | 7.92M | $7.81M | 0.8% | — | New |
| Pacira BioSciences, Inc. | PCRX | 7.22M | $7.02M | 0.7% | −$97.2K | Added$2.05M |
| Array Technologies, Inc. | ARRY | 7.37M | $6.69M | 0.7% | — | New |
| World Kinect Corp | WKC | 7.17M | $5.98M | 0.6% | −$1.32M | Added−$89.3K |
| Jazz Investments I Ltd | — | 5.5M | $5.68M | 0.6% | — | New |
| Alarm Com Hldgs Inc | — | 5.65M | $5.23M | 0.5% | −$164.1K | Cut−$11.4M |
| Southern Co | — | 4.5M | $4.46M | 0.5% | — | New |
| Live Nation Entertainment In | — | 4.6M | $4.45M | 0.5% | — | New |
| Centerpoint Energy Inc | CNP | 3.66M | $4.35M | 0.5% | $309.8K | Cut$229.3K |
| Cheesecake Factory Inc | CAKE | 6M | $4.1M | 0.4% | — | New |
| Biomarin Pharmaceutical Inc | BMRN | 4.01M | $3.88M | 0.4% | $16.2K | Cut−$25.2K |
| Fluor Corp | FLR | 4.2M | $3.36M | 0.4% | −$1.55M | Cut−$1.91M |
| Cogent Biosciences, Inc. | COGT | 4.63M | $3.28M | 0.3% | −$1.81M | Added−$1.37M |
| Tetra Tech Inc New | — | 4.88M | $3.06M | 0.3% | −$2.26M | Cut−$2.26M |
| Post Hldgs Inc | — | 4M | $2.69M | 0.3% | −$1.63M | Held |
| Nutanix, Inc. | NTNX | 4M | $2.5M | 0.3% | — | New |
| Collegium Pharmaceutical, Inc | COLL | 4.13M | $2.47M | 0.3% | −$3.22M | Added−$3.14M |
| Immunocore Hldgs Plc | — | 4.15M | $2.16M | 0.2% | −$1.58M | Held |
| Wec Energy Group, Inc. | WEC | 3M | $1.82M | 0.2% | −$1.6M | Held |
| BridgeBio Pharma, Inc. | BBIO | 210K | $237.1K | 0.0% | — | New |
| BridgeBio Pharma, Inc. | BBIO | 125K | $212.5K | 0.0% | — | New |
Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.