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MACKAY SHIELDS LLC
Period ended Sep 30, 2026 · Latest filing Oct 13, 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: $2,758,030,309
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
- ALPHABET INC · DEP SHS RP1/20 A · 02079K404 · shares: $119,679,035
- HEWLETT PACKARD ENTERPRISE C · 7.625 MAND CONV · 42824C208 · shares: $98,565,874
- SNOWFLAKE INC · NOTE 10/0 · 833445AB5 · principal: $79,643,653
- LUMENTUM HLDGS INC · NOTE 0.500% 6/1 · 55024UAF6 · principal: $74,960,514
- MKS INC. · NOTE 1.250% 6/0 · 55306NAB0 · principal: $66,911,605
- CLOUDFLARE INC · NOTE 6/1 · 18915MAF4 · principal: $66,066,689
- REVOLUTION MEDICINES INC · NOTE 0.500% 5/0 · 76155XAA8 · principal: $62,789,138
- UBER TECHNOLOGIES INC · NOTE 0.875%12/0 · 90353TAM2 · principal: $59,265,621
- TETRA TECH INC NEW · DBCV 2.250% 8/1 · 88162GAB9 · principal: $55,697,192
- WESTERN DIGITAL CORP · NOTE 3.000%11/1 · 958102AT2 · principal: $52,742,022
Reported holdings
297 reported entries| Issuer | Class | CUSIP | Type | Shares / principal | Reported value (USD) |
|---|---|---|---|---|---|
| DEXCOM INC | NOTE 0.375% 5/1 | 252131AM9 | — | 1,125,000 principal | $1,065,094 |
| IRHYTHM HOLDINGS INC | NOTE 1.500% 9/0 | 450056AB2 | — | 1,001,000 principal | $1,065,064 |
| ALNYLAM PHARMACEUTICALS INC | NOTE 1.000% 9/1 | 02043QAB3 | — | 974,000 principal | $1,055,074 |
| NOVA LTD | NOTE 9/1 | 66982MAB0 | — | 743,000 principal | $1,044,844 |
| SYNAPTICS INC | NOTE 0.750%12/0 | 87157DAJ8 | — | 819,000 principal | $1,029,166 |
| TEMPUS AI INC | NOTE 0.750% 7/1 | 88023BAE3 | — | 778,000 principal | $978,530 |
| GLOBAL PMTS INC | NOTE 1.500% 3/0 | 37940XAU6 | — | 1,050,000 principal | $933,975 |
| SHIFT4 PMTS INC | NOTE 0.500% 8/0 | 82452JAD1 | — | 960,000 principal | $926,334 |
| IMPINJ INC | NOTE 9/1 | 453204AF6 | — | 875,000 principal | $912,595 |
| BILL HOLDINGS INC | NOTE 4/0 | 090043AF7 | — | 962,000 principal | $814,204 |
| PATRICK INDS INC | NOTE 1.750%12/0 | 703343AG8 | — | 638,000 principal | $761,856 |
| BLACKROCK MUNIHLDNGS CALI | COM | 09254L107 | — | 73,110 shares | $712,823 |
| WESTERN DIGITAL CORP | NOTE 3.000%11/1 | 958102AT2 | — | 59,000 principal | $706,406 |
| ZSCALER INC | NOTE 7/1 | 98980GAD4 | — | 740,000 principal | $698,486 |
| UPSTART HLDGS INC | NOTE 1.000%11/1 | 91680MAF4 | — | 943,000 principal | $694,991 |
| RIVIAN AUTOMOTIVE INC | NOTE 4.625% 3/1 | 76954AAB9 | — | 618,000 principal | $681,222 |
| ALPHABET INC | DEP SHS RP1/20 B | 02079K602 | — | 12,895 shares | $630,694 |
| EATON VANCE MUN BD FD | COM | 27827X101 | — | 67,670 shares | $613,767 |
| GREENBRIER COS INC | NOTE 2.875% 4/1 | 393657AM3 | — | 569,000 principal | $594,487 |
| MGP INGREDIENTS INC NEW | NOTE 1.875%11/1 | 55303JAB2 | — | 573,000 principal | $565,867 |
| ALPHABET INC | DEP SHS RP1/20 A | 02079K404 | — | 11,473 shares | $563,095 |
| BLACKROCK MUNIHLDNGS CALI | COM | 09254L107 | — | 55,705 shares | $543,124 |
| EATON VANCE MUN BD FD | COM | 27827X101 | — | 58,094 shares | $526,913 |
| PPL CAP FDG INC | NOTE 2.875% 3/1 | 69352PAS2 | — | 500,000 principal | $526,197 |
| LIFE360 INC | NOTE 6/0 | 532206AC3 | — | 570,000 principal | $516,278 |
| VERTEX INC | NOTE 0.750% 5/0 | 92538JAB2 | — | 575,000 principal | $511,606 |
| SPECTRUM BRANDS INC | NOTE 3.375% 6/0 | 84762LAZ8 | — | 445,000 principal | $441,226 |
| HEWLETT PACKARD ENTERPRISE C | 7.625 MAND CONV | 42824C208 | — | 2,609 shares | $426,728 |
| WORKIVA INC | NOTE 1.250% 8/1 | 98139AAD7 | — | 445,000 principal | $425,531 |
| EURONET WORLDWIDE INC | NOTE 0.625%10/0 | 298736AN9 | — | 480,000 principal | $410,514 |
| SNOWFLAKE INC | NOTE 10/0 | 833445AB5 | — | 172,000 principal | $371,176 |
| PG&E CORP | NOTE 4.250%12/0 | 69331CAL2 | — | 359,000 principal | $352,000 |
| WEC ENERGY GROUP INC | NOTE 4.375% 6/0 | 92939UAR7 | — | 310,000 principal | $343,403 |
| AKAMAI TECHNOLOGIES INC | NOTE 0.375% 9/0 | 00971TAL5 | — | 299,000 principal | $332,174 |
| GUARDANT HEALTH INC | NOTE 11/1 | 40131MAB5 | — | 223,000 principal | $304,694 |
| NEXTERA ENERGY INC | UNIT 02/15/2029 | 65339F655 | — | 6,975 shares | $300,623 |
| CLOUDFLARE INC | NOTE 6/1 | 18915MAF4 | — | 188,000 principal | $296,264 |
| BANK OF AMER CORP | 7.25%CNV PFD L | 060505682 | — | 235 shares | $286,926 |
| BLACKLINE INC | NOTE 1.000% 6/0 | 09239BAF6 | — | 295,000 principal | $263,140 |
| REVOLUTION MEDICINES INC | NOTE 0.500% 5/0 | 76155XAA8 | — | 196,000 principal | $251,629 |
| UBER TECHNOLOGIES INC | NOTE 0.875%12/0 | 90353TAM2 | — | 220,000 principal | $251,522 |
| LIVE NATION ENTERTAINMENT IN | NOTE 3.125% 1/1 | 538034BA6 | — | 149,000 principal | $242,992 |
| HALOZYME THERAPEUTICS INC | NOTE 0.250% 3/0 | 40637HAD1 | — | 167,000 principal | $237,750 |
| FRESHPET INC | NOTE 3.000% 4/0 | 358039AB1 | — | 207,000 principal | $232,565 |
| GUIDEWIRE SOFTWARE INC | NOTE 1.250%11/0 | 40171VAC4 | — | 233,000 principal | $227,524 |
| AFFIRM HLDGS INC | NOTE 0.750%12/1 | 00827BAD8 | — | 218,000 principal | $226,042 |
| ON SEMICONDUCTOR CORP | NOTE 5/0 | 682189AS4 | — | 152,000 principal | $224,960 |
| DOORDASH INC | NOTE 5/1 | 25809KAB1 | — | 235,000 principal | $223,720 |
| WW INTL INC | COM NEW | 98262P200 | — | 14,371 shares | $222,176 |
| QXO INC | 5.50 DEP PFD | 82846H504 | — | 5,298 shares | $214,357 |
| ITRON INC | NOTE 1.375% 7/1 | 465741AQ9 | — | 220,000 principal | $211,530 |
| ORACLE CORP | 6.5 DEP CUM SR D | 68389X204 | — | 4,613 shares | $204,079 |
| MICROCHIP TECHNOLOGY INC. | DEP SHS REPSTG | 595017302 | — | 3,060 shares | $203,765 |
| BOEING CO | DEP CONV PFD A | 097023204 | — | 3,317 shares | $196,234 |
| ARES MANAGEMENT CORPORATION | 6.75 SE B PFD | 03990B309 | — | 5,059 shares | $194,164 |
| NORTHERN OIL & GAS INC | NOTE 3.625% 4/1 | 665531AJ8 | — | 193,000 principal | $193,037 |
| NUTANIX INC | NOTE 0.250%10/0 | 67059NAH1 | — | 146,000 principal | $189,654 |
| DEXCOM INC | NOTE 0.375% 5/1 | 252131AM9 | — | 198,000 principal | $187,209 |
| FLUOR CORP | NOTE 1.125% 8/1 | 343412AJ1 | — | 150,000 principal | $184,875 |
| TETRA TECH INC NEW | DBCV 2.250% 8/1 | 88162GAB9 | — | 171,000 principal | $181,174 |
| LIBERTY MEDIA CORP DEL | NOTE 2.250% 8/1 | 531229AQ5 | — | 150,000 principal | $175,515 |
| MERITAGE HOMES CORP | NOTE 1.750% 5/1 | 59001ABF8 | — | 179,000 principal | $171,228 |
| WEC ENERGY GROUP INC | NOTE 4.375% 6/0 | 92939UAR7 | — | 153,000 principal | $169,295 |
| SOUTHERN CO | NOTE 4.500% 6/1 | 842587DZ7 | — | 167,000 principal | $168,670 |
| MKS INC. | NOTE 1.250% 6/0 | 55306NAB0 | — | 92,000 principal | $168,452 |
| BIOMARIN PHARMACEUTICAL INC | NOTE 1.250% 5/1 | 09061GAK7 | — | 172,000 principal | $167,717 |
| OSI SYSTEMS INC | NOTE 2.250% 8/0 | 671044AF2 | — | 137,000 principal | $167,306 |
| MIRUM PHARMACEUTICALS INC | NOTE 4.000% 5/0 | 604749AB7 | — | 60,000 principal | $165,150 |
| UNITY SOFTWARE INC | NOTE 3/1 | 91332UAH4 | — | 114,000 principal | $152,866 |
| POST HLDGS INC | NOTE 2.500% 8/1 | 737446AT1 | — | 150,000 principal | $147,750 |
| NYLIM ACTIVE ETF TR | MACKAY SECURITI | 45409F686 | — | 5,752 shares | $138,654 |
| NYLIM ACTIVE ETF TR | MACKAY SECURITI | 45409F686 | — | 5,752 shares | $138,654 |
| PELOTON INTERACTIVE INC | NOTE 5.500%12/0 | 70614WAD2 | — | 85,000 principal | $120,785 |
| MGP INGREDIENTS INC NEW | NOTE 1.875%11/1 | 55303JAB2 | — | 114,000 principal | $112,296 |
| BRIDGEBIO PHARMA INC | NOTE 2.250% 2/0 | 10806XAD4 | — | 100,000 principal | $102,506 |
| ARROWHEAD PHARMACEUTICALS IN | NOTE 1/1 | 04280AAC4 | — | 100,000 principal | $102,200 |
| GUARDANT HEALTH INC | NOTE 11/1 | 40131MAB5 | — | 65,000 principal | $89,137 |
| RIVIAN AUTOMOTIVE INC | NOTE 4.625% 3/1 | 76954AAB9 | — | 80,000 principal | $87,934 |
| CABLE ONE INC | NOTE 1.125% 3/1 | 12685JAG0 | — | 335,000 principal | $87,100 |
| ALNYLAM PHARMACEUTICALS INC | NOTE 1.000% 9/1 | 02043QAB3 | — | 79,000 principal | $85,378 |
| IONIS PHARMACEUTICALS INC | NOTE 1.750% 6/1 | 462222AF7 | — | 70,000 principal | $76,623 |
| PROGRESS SOFTWARE CORP | NOTE 3.500% 3/0 | 743312AD2 | — | 77,000 principal | $75,324 |
| PATRICK INDS INC | NOTE 1.750%12/0 | 703343AG8 | — | 62,000 principal | $73,726 |
| HALOZYME THERAPEUTICS INC | NOTE 0.250% 3/0 | 40637HAD1 | — | 48,000 principal | $68,575 |
| IRHYTHM HOLDINGS INC | NOTE 1.500% 9/0 | 450056AB2 | — | 64,000 principal | $67,776 |
| WELLS FARGO & CO | PERP PFD CNV A | 949746804 | — | 62 shares | $66,897 |
| MIRUM PHARMACEUTICALS INC | NOTE 4.000% 5/0 | 604749AB7 | — | 24,000 principal | $66,180 |
| SOUTHERN CO | NOTE 4.500% 6/1 | 842587DZ7 | — | 64,000 principal | $64,720 |
| OSI SYSTEMS INC | NOTE 2.250% 8/0 | 671044AF2 | — | 46,000 principal | $56,348 |
| TALOS ENERGY INC | COM | 87484T108 | — | 3,422 shares | $55,881 |
| CABLE ONE INC | NOTE 1.125% 3/1 | 12685JAG0 | — | 190,000 principal | $49,400 |
| NINE ENERGY SERVICE INC | COMMON STOCK | 65441V200 | — | 6,510 shares | $48,695 |
| NINE ENERGY SERVICE INC | COMMON STOCK | 65441V200 | — | 6,277 shares | $46,952 |
| GULFPORT ENERGY CORP | COMMON SHARES | 402635502 | — | 302 shares | $45,445 |
| IONIS PHARMACEUTICALS INC | NOTE 1.750% 6/1 | 462222AF7 | — | 28,000 principal | $30,789 |
| ISHARES GOLD TR | ISHARES NEW | 464285204 | — | 0 shares | $0 |
| SPDR GOLD TR | GOLD SHS | 78463V107 | — | 0 shares | $0 |