STEELHEAD PARTNERS LLC
Follow13F filer, CIK 1133521, SEATTLE, WA
STEELHEAD PARTNERS LLC reported $1,391,195,204 across 24 holdings for the quarter ended 2026-03-31, in a 13F-HR filed 2026-05-13. Its ten largest share positions make up 69.1% of the portfolio.
Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001133521-26-000011
- Period
- 2026-03-31
- Reported value
- $1.39B
- Holdings
- 24
- Top 10 weight
- 69.1%
- New
- 7
- Sold out
- 7
Holdings, Q1 2026
Share positions as resolved from 13F-HR 0001133521-26-000011, largest first. % of portfolio is the value over $1,391,195,204, the sum of the share positions whose value is usable for ratios (method).
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 |
|---|---|---|---|---|
| BRIDGEBIO PHARMA INCBRIDGEBIO PHARMA INC NOTE 2.500% 3/1 | principal | 70,000,000 | $127M | new |
| ON SEMICONDUCTOR CORPON SEMICONDUCTOR CORP NOTE 5/0 | principal | 97,703,000 | $126M | -2,297,000 |
| UBER TECHNOLOGIES INCUBER TECHNOLOGIES INC NOTE 0.875%12/0 | principal | 100,000,000 | $121M | +45,000,000 |
| ADVANCED ENERGY INDSADVANCED ENERGY INDS NOTE 2.500% 9/1 | principal | 40,500,000 | $97.5M | +500,000 |
| AKAMAI TECHNOLOGIES INCAKAMAI TECHNOLOGIES INC NOTE 1.125% 2/1 | principal | 77,000,000 | $88M | -10,500,000 |
| LCI INDSLCI INDS Convertible | principal | 69,000,000 | $83.2M | new |
| ALARM COM HLDGS INCALARM COM HLDGS INC NOTE 2.250% 6/0 | principal | 90,000,000 | $83.2M | 0 |
| CLOUDFLARE INCCLOUDFLARE INC NOTE 8/1 | principal | 70,000,000 | $82.2M | -14,000,000 |
| ALNYLAM PHARMACEUTICALS INCALNYLAM PHARMACEUTICALS INC NOTE 1.000% 9/1 | principal | 60,000,000 | $77.1M | new |
| DEXCOM INCDEXCOM INC NOTE 0.375% 5/1 | principal | 82,850,000 | $76.6M | 0 |
| NUTANIX INCNUTANIX INC Convertible | principal | 65,000,000 | $66.4M | 0 |
| WORKIVA INCWORKIVA INC NOTE 1.250% 8/1 | principal | 57,500,000 | $53.9M | new |
| AKAMAI TECHNOLOGIES INCAKAMAI TECHNOLOGIES INC NOTE 0.375% 9/0 | principal | 40,000,000 | $46.5M | -28,150,000 |
| IRHYTHM HOLDINGS INCIRHYTHM HOLDINGS INC NOTE 1.500% 9/0 | principal | 36,122,000 | $39.7M | new |
| ITRON INCITRON INC NOTE 1.375% 7/1 | principal | 35,000,000 | $35.4M | -5,000,000 |
| VARONIS SYS INCVARONIS SYS INC NOTE 1.000% 9/1 | principal | 40,000,000 | $34.9M | +25,000,000 |
| POST HLDGS INCPOST HLDGS INC NOTE 2.500% 8/1 | principal | 29,214,000 | $31.6M | new |
| BILL HOLDINGS INCBILL HOLDINGS INC NOTE 4/0 | principal | 33,500,000 | $29.9M | -39,500,000 |
| BLACKLINE INCBLACKLINE INC NOTE 1.000% 6/0 | principal | 28,000,000 | $26.3M | -49,000,000 |
| PENGUIN SOLUTIONS INCPENGUIN SOLUTIONS INC NOTE 2.000% 8/1 | principal | 23,000,000 | $23.1M | -7,000,000 |
| HALOZYME THERAPEUTICS INCHALOZYME THERAPEUTICS INC NOTE 0.250% 3/0 | principal | 19,053,000 | $19.8M | new |
| LEMAITRE VASCULAR INCLEMAITRE VASCULAR INC NOTE 2.500% 2/0 | principal | 12,000,000 | $13.5M | 0 |
| FIVE9 INCFIVE9 INC CNV | principal | 9,000,000 | $7.82M | -16,000,000 |
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 |
|---|---|---|---|
| JAZZ INVESTMENTS I LTDJAZZ INVESTMENTS I LTD | 60,000,000 | $69.6M | principal |
| BOX INCBOX INC | 53,609,000 | $62.7M | principal |
| CONFLUENT INCCONFLUENT INC | 61,040,000 | $59.5M | principal |
| TripAdvisor IncTripAdvisor Inc | 47,901,000 | $47.2M | principal |
| SEA LTDSEA LTD | 45,000,000 | $43.7M | principal |
| ETSY INCETSY INC | 34,200,000 | $30.6M | principal |
| PROGRESS SOFTWARE CORPPROGRESS SOFTWARE CORP | 25,000,000 | $24.9M | 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 0001133521-26-000011 | base | 2026-05-13 | acceptance time not in the bulk data set |