MACKAY SHIELDS LLC
CIK: 0000061227Latest portfolio: $2.9B · Q4 2025
Holdings
132
Total Value
$2.9B
New Positions
132
Closed Positions
0
Top Holdings
View All 132 Holdings →| # | Stock | Shares | Value | % Portfolio | Change | Type |
|---|---|---|---|---|---|---|
| 1 | WDC 3 11/15/28WESTERN DIGITAL CORP | 18,882,000 | $86.6M | 3.03% | NEW | |
| 2 | LITE 0.5 06/15/28LUMENTUM HLDGS INC | 30,037,000 | $85.3M | 2.99% | NEW | |
| 3 | AEIS 2.5 09/15/28ADVANCED ENERGY INDS | 44,638,000 | $73.3M | 2.56% | NEW | |
| 4 | MIRM 4 05/01/29MIRUM PHARMACEUTICALS INC | 25,532,000 | $66.0M | 2.31% | NEW | |
| 5 | LNTH 2.625 12/15/27LANTHEUS HLDGS INC | 56,714,000 | $65.1M | 2.28% | NEW | |
| 6 | QXO 5.5 05/15/28QXO INC | 1,171,159 | $65.0M | 2.28% | NEW | |
| 7 | TTEK 2.25 08/15/28TETRA TECH INC NEW | 59,623,000 | $64.8M | 2.27% | NEW | |
| 8 | BA 6 10/15/27BOEING CO | 830,097 | $57.7M | 2.02% | NEW | |
| 9 | CABO 1.125 03/15/28CABLE ONE INC | 69,399,000 | $56.6M | 1.98% | NEW | |
| 10 | UBER 0.875 12/01/28 2028UBER TECHNOLOGIES INC | 42,644,000 | $55.4M | 1.94% | NEW | |
| 11 | APO 6.75 07/31/26APOLLO GLOBAL MGMT INC | 714,292 | $53.9M | 1.89% | NEW | |
| 12 | POST 2.5 08/15/27POST HLDGS INC | 49,514,000 | $53.4M | 1.87% | NEW | |
| 13 | PCG 4.25 12/01/27PG&E CORP | 51,451,000 | $53.0M | 1.85% | NEW | |
| 14 | ON 0 05/01/27ON SEMICONDUCTOR CORP | 39,380,000 | $47.0M | 1.64% | NEW | |
| 15 | MKSI 1.25 06/01/30MKS INC. | 36,548,000 | $46.7M | 1.63% | NEW | |
| 16 | IRTC 1.5 09/01/29IRHYTHM TECHNOLOGIES INC | 32,682,000 | $45.7M | 1.60% | NEW | |
| 17 | STX 3.5 06/01/28SEAGATE HDD CAYMAN | 13,293,000 | $44.7M | 1.56% | NEW | |
| 18 | SNOW 0 10/01/27SNOWFLAKE INC | 29,853,000 | $44.4M | 1.55% | NEW | |
| 19 | FWONK 2.25 08/15/27LIBERTY MEDIA CORP DEL | 34,036,000 | $43.1M | 1.51% | NEW | |
| 20 | HPE 7.625 09/01/27HEWLETT PACKARD ENTERPRISE C | 597,863 | $39.6M | 1.39% | NEW | |
| 21 | NCLH 1.125 02/15/27NCL CORP LTD | 38,891,000 | $38.9M | 1.36% | NEW | |
| 22 | IAU*ISHARES GOLD TR | 475,000 | $38.6M | 1.35% | NEW | |
| 23 | FOUR 0.5 08/01/27SHIFT4 PMTS INC | 39,492,000 | $38.0M | 1.33% | NEW | |
| 24 | ETSY 0.125 10/01/26ETSY INC | 37,045,000 | $37.5M | 1.31% | NEW | |
| 25 | CHEF 2.375 12/15/28CHEFS WHSE INC | 23,784,000 | $36.2M | 1.27% | NEW |
Quarterly Changes
New Positions
- $86.6M
- $85.3M
- $73.3M
- $66.0M
- $65.1M
- $65.0M
- $64.8M
- $57.7M
- $56.6M
- $55.4M
Closed Positions
No closed positions this quarter
Sector Breakdown
UnknownNaN% ($InfinityT)
Technology0.0% ($3.112812483121881e+68T)
Financial Services0.0% ($2.543114670116358e+43T)
Energy0.0% ($3.3T)
Communication Services0.0% ($6.5M)
Consumer Defensive0.0% ($737K)
Consumer Cyclical0.0% ($419K)
Filing History
| Quarter | Filing Date | Portfolio Value | Holdings |
|---|---|---|---|
| Q4 2025 | Jan 29, 2026 | $2.9B | 340 |
| Q3 2025 | Oct 27, 2025 | $2.9T | 0 |
| Q2 2025 | Jul 24, 2025 | $3.1T | 364 |
| Q1 2025 | Apr 29, 2025 | $3.1T | 361 |
| Q4 2024 | Feb 4, 2025 | $3.4T | 367 |
| Q3 2024 | Oct 31, 2024 | $3649.0T | 368 |
| Q2 2024 | Aug 8, 2024 | $3289.7T | 345 |
| Q1 2024 | May 3, 2024 | $3607.9T | 361 |
| Q4 2023 | Feb 2, 2024 | $3427.5T | 360 |
| Q3 2023 | Oct 25, 2023 | $3635.0T | 333 |
| Q2 2023 | Jul 27, 2023 | $3577.0T | 374 |
| Q1 2023 | Apr 27, 2023 | $3642.0T | 386 |
| Q4 2022 | Jan 31, 2023 | $3919.4T | 462 |
| Q3 2022 | Nov 2, 2022 | $4.0T | 466 |
| Q2 2022 | Aug 3, 2022 | $4.1T | 498 |
| Q1 2022 | May 13, 2022 | $11.4T | 1,438 |
| Q4 2021 | Feb 4, 2022 | $12.0T | 1,442 |
| Q3 2021 | Nov 12, 2021 | $9.4T | 1,395 |
| Q2 2021 | Aug 13, 2021 | $10.6T | 1,378 |
| Q1 2021 | May 14, 2021 | $13.7T | 2,988 |
| Q4 2020 | Feb 16, 2021 | $14.5T | 3,172 |
| Q3 2020 | Nov 4, 2020 | $14.7T | 2,990 |
| Q2 2020 | Jul 31, 2020 | $12.5T | 3,079 |
| Q1 2020 | May 8, 2020 | $10.8T | 2,888 |
| Q4 2019 | Feb 11, 2020 | $14.5T | 2,832 |
| Q3 2019 | Nov 1, 2019 | $16.4T | 2,897 |
| Q2 2019 | Aug 13, 2019 | $14.7T | 2,991 |
| Q1 2019 | May 13, 2019 | $14.2T | 2,901 |
| Q4 2018 | Feb 14, 2019 | $12.3T | 2,666 |
| Q3 2018 | Nov 14, 2018 | $13.1T | 1,146 |
| Q2 2018 | Aug 6, 2018 | $14.4T | 2,281 |
| Q1 2018 | May 3, 2018 | $16.0T | 1,313 |
| Q4 2017 | Jan 24, 2018 | $2.7T | 199 |
| Q3 2017 | Oct 24, 2017 | $2.7T | 195 |
| Q2 2017 | Jul 13, 2017 | $2.4T | 166 |
| Q1 2017 | Apr 20, 2017 | $2.2T | 159 |
| Q4 2016 | Jan 10, 2017 | $2.1T | 162 |
| Q3 2016 | Oct 20, 2016 | $2.2T | 159 |
| Q2 2016 | Jul 25, 2016 | $2.0T | 156 |
| Q1 2016 | Apr 21, 2016 | $1.8T | 114 |
Fund Information
MACKAY SHIELDS LLC is an institutional investment manager that files 13F reports with the SEC. As of the Q4 2025 filing, the fund reported a portfolio valued at $2.9B across 132 holdings. The largest position is WESTERN DIGITAL CORP (WDC 3 11/15/28), representing 3.0% of the portfolio. Compared to the previous quarter, the fund opened 132 new positions and closed 0 positions. 13F filings are required quarterly disclosures that provide transparency into the holdings of institutional investment managers with at least $100 million in qualifying assets.