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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) |
|---|---|---|---|---|---|
| GUIDEWIRE SOFTWARE INC | NOTE 1.250%11/0 | 40171VAC4 | — | 7,260,000 principal | $7,089,390 |
| DOORDASH INC | NOTE 5/1 | 25809KAB1 | — | 7,344,000 principal | $6,991,488 |
| AFFIRM HLDGS INC | NOTE 0.750%12/1 | 00827BAD8 | — | 6,704,000 principal | $6,951,311 |
| ON SEMICONDUCTOR CORP | NOTE 5/0 | 682189AS4 | — | 4,664,000 principal | $6,902,720 |
| QXO INC | 5.50 DEP PFD | 82846H504 | — | 169,120 shares | $6,842,595 |
| ITRON INC | NOTE 1.375% 7/1 | 465741AQ9 | — | 7,048,000 principal | $6,776,652 |
| BLACKROCK MUNIHLDGS NJ QLTY | COM | 09254X101 | — | 594,422 shares | $6,705,080 |
| NINE ENERGY SERVICE INC | COMMON STOCK | 65441V200 | — | 858,466 shares | $6,421,326 |
| MICROCHIP TECHNOLOGY INC. | DEP SHS REPSTG | 595017302 | — | 94,440 shares | $6,288,760 |
| ORACLE CORP | 6.5 DEP CUM SR D | 68389X204 | — | 141,852 shares | $6,275,532 |
| NORTHERN OIL & GAS INC | NOTE 3.625% 4/1 | 665531AJ8 | — | 6,232,000 principal | $6,233,184 |
| ARES MANAGEMENT CORPORATION | 6.75 SE B PFD | 03990B309 | — | 161,594 shares | $6,201,978 |
| BOEING CO | DEP CONV PFD A | 097023204 | — | 102,031 shares | $6,036,154 |
| BLACKROCK MUNIYILD QULT FD I | COM | 09254F100 | — | 604,068 shares | $5,998,395 |
| TETRA TECH INC NEW | DBCV 2.250% 8/1 | 88162GAB9 | — | 5,525,000 principal | $5,853,737 |
| SPDR GOLD TR | GOLD SHS | 78463V107 | — | 15,336 shares | $5,840,562 |
| NUTANIX INC | NOTE 0.250%10/0 | 67059NAH1 | — | 4,465,000 principal | $5,800,035 |
| DEXCOM INC | NOTE 0.375% 5/1 | 252131AM9 | — | 6,109,000 principal | $5,776,060 |
| FLUOR CORP | NOTE 1.125% 8/1 | 343412AJ1 | — | 4,572,000 principal | $5,634,990 |
| SOUTHERN CO | NOTE 4.500% 6/1 | 842587DZ7 | — | 5,364,000 principal | $5,417,640 |
| LIBERTY MEDIA CORP DEL | NOTE 2.250% 8/1 | 531229AQ5 | — | 4,568,000 principal | $5,345,017 |
| MERITAGE HOMES CORP | NOTE 1.750% 5/1 | 59001ABF8 | — | 5,563,000 principal | $5,321,455 |
| OSI SYSTEMS INC | NOTE 2.250% 8/0 | 671044AF2 | — | 4,350,000 principal | $5,312,264 |
| ABERDEEN MUN INCOME FD | SH BEN INT | 552738106 | — | 1,087,087 shares | $5,272,372 |
| BIOMARIN PHARMACEUTICAL INC | NOTE 1.250% 5/1 | 09061GAK7 | — | 5,379,000 principal | $5,245,063 |
| ALPHABET INC | DEP SHS RP1/20 A | 02079K404 | — | 105,840 shares | $5,221,087 |
| WEC ENERGY GROUP INC | NOTE 4.375% 6/0 | 92939UAR7 | — | 4,705,000 principal | $5,206,083 |
| MIRUM PHARMACEUTICALS INC | NOTE 4.000% 5/0 | 604749AB7 | — | 1,875,000 principal | $5,160,938 |
| MKS INC. | NOTE 1.250% 6/0 | 55306NAB0 | — | 2,815,000 principal | $5,154,265 |
| UNITY SOFTWARE INC | NOTE 3/1 | 91332UAH4 | — | 3,525,000 principal | $4,726,778 |
| POST HLDGS INC | NOTE 2.500% 8/1 | 737446AT1 | — | 4,603,000 principal | $4,533,955 |
| HEWLETT PACKARD ENTERPRISE C | 7.625 MAND CONV | 42824C208 | — | 25,800 shares | $4,229,136 |
| SNOWFLAKE INC | NOTE 10/0 | 833445AB5 | — | 1,890,000 principal | $4,083,345 |
| LUMENTUM HLDGS INC | NOTE 0.500% 6/1 | 55024UAF6 | — | 527,000 principal | $3,892,422 |
| PELOTON INTERACTIVE INC | NOTE 5.500%12/0 | 70614WAD2 | — | 2,612,000 principal | $3,711,652 |
| MGP INGREDIENTS INC NEW | NOTE 1.875%11/1 | 55303JAB2 | — | 3,627,000 principal | $3,572,776 |
| BLACKROCK MUNIYIELD MICH QU | COM | 09254V105 | — | 302,755 shares | $3,418,104 |
| BLACKROCK MUNIHLDGS NJ QLTY | COM | 09254X101 | — | 287,530 shares | $3,243,338 |
| ARROWHEAD PHARMACEUTICALS IN | NOTE 1/1 | 04280AAC4 | — | 3,105,000 principal | $3,173,310 |
| CLOUDFLARE INC | NOTE 6/1 | 18915MAF4 | — | 1,941,000 principal | $3,063,620 |
| BRIDGEBIO PHARMA INC | NOTE 2.250% 2/0 | 10806XAD4 | — | 2,963,000 principal | $3,037,253 |
| TALOS ENERGY INC | COM | 87484T108 | — | 181,907 shares | $2,970,541 |
| BLACKROCK MUNIYIELD QUALITY | COM | 09254E103 | — | 303,353 shares | $2,921,289 |
| SOUTHERN CO | NOTE 3.250% 6/1 | 842587ED5 | — | 3,000,000 principal | $2,914,500 |
| RIVIAN AUTOMOTIVE INC | NOTE 4.625% 3/1 | 76954AAB9 | — | 2,567,000 principal | $2,821,595 |
| ALNYLAM PHARMACEUTICALS INC | NOTE 1.000% 9/1 | 02043QAB3 | — | 2,556,000 principal | $2,762,371 |
| NEXTERA ENERGY INC | UNIT 06/01/2027 | 65339F663 | — | 55,550 shares | $2,708,964 |
| UBER TECHNOLOGIES INC | NOTE 0.875%12/0 | 90353TAM2 | — | 2,354,000 principal | $2,695,396 |
| REVOLUTION MEDICINES INC | NOTE 0.500% 5/0 | 76155XAA8 | — | 2,065,000 principal | $2,661,410 |
| IONIS PHARMACEUTICALS INC | NOTE 1.750% 6/1 | 462222AF7 | — | 2,359,000 principal | $2,582,185 |
| TETRA TECH INC NEW | DBCV 2.250% 8/1 | 88162GAB9 | — | 2,416,000 principal | $2,568,812 |
| MKS INC. | NOTE 1.250% 6/0 | 55306NAB0 | — | 1,400,000 principal | $2,568,650 |
| PROGRESS SOFTWARE CORP | NOTE 3.500% 3/0 | 743312AD2 | — | 2,498,000 principal | $2,443,644 |
| SOUTHERN CO | NOTE 3.250% 6/1 | 842587ED5 | — | 2,424,000 principal | $2,354,916 |
| PATRICK INDS INC | NOTE 1.750%12/0 | 703343AG8 | — | 1,918,000 principal | $2,280,751 |
| BOEING CO | DEP CONV PFD A | 097023204 | — | 38,100 shares | $2,248,472 |
| PG&E CORP | NOTE 4.250%12/0 | 69331CAL2 | — | 2,200,000 principal | $2,159,850 |
| IRHYTHM HOLDINGS INC | NOTE 1.500% 9/0 | 450056AB2 | — | 2,027,000 principal | $2,146,593 |
| MERIT MED SYS INC | NOTE 3.000% 2/0 | 589889AB0 | — | 1,816,000 principal | $2,111,100 |
| QXO INC | 5.50 DEP PFD | 82846H504 | — | 57,484 shares | $2,106,214 |
| BLACKROCK MUNIYIELD MICH QU | COM | 09254V105 | — | 176,992 shares | $1,998,240 |
| WELLS FARGO & CO | PERP PFD CNV A | 949746804 | — | 1,790 shares | $1,931,392 |
| MERITAGE HOMES CORP | NOTE 1.750% 5/1 | 59001ABF8 | — | 1,951,000 principal | $1,876,051 |
| MICROCHIP TECHNOLOGY INC. | DEP SHS REPSTG | 595017302 | — | 27,470 shares | $1,836,370 |
| DATADOG INC | NOTE 12/0 | 23804LAD5 | — | 1,205,000 principal | $1,735,685 |
| GUIDEWIRE SOFTWARE INC | NOTE 1.250%11/0 | 40171VAC4 | — | 1,747,000 principal | $1,710,313 |
| ORACLE CORP | 6.5 DEP CUM SR D | 68389X204 | — | 38,415 shares | $1,685,650 |
| AKAMAI TECHNOLOGIES INC | NOTE 0.375% 9/0 | 00971TAL5 | — | 1,465,000 principal | $1,631,205 |
| ETSY INC | NOTE 1.000% 6/1 | 29786AAQ9 | — | 1,466,000 principal | $1,623,917 |
| AXON ENTERPRISE INC | NOTE 9/1 | 05464CAE1 | — | 1,614,000 principal | $1,591,284 |
| CYBERARK SOFTWARE LTD | NOTE 6/1 | 23248VAD7 | — | 828,000 principal | $1,550,430 |
| ARES MANAGEMENT CORPORATION | 6.75 SE B PFD | 03990B309 | — | 40,250 shares | $1,540,097 |
| NORTHERN OIL & GAS INC | NOTE 3.625% 4/1 | 665531AJ8 | — | 1,530,000 principal | $1,537,941 |
| NUTANIX INC | NOTE 0.500%12/1 | 67059NAK4 | — | 1,385,000 principal | $1,509,112 |
| WESTERN DIGITAL CORP | NOTE 3.000%11/1 | 958102AT2 | — | 125,000 principal | $1,497,874 |
| WELLS FARGO & CO | PERP PFD CNV A | 949746804 | — | 1,352 shares | $1,461,717 |
| POST HLDGS INC | NOTE 2.500% 8/1 | 737446AT1 | — | 1,478,000 principal | $1,459,525 |
| BANK OF AMER CORP | 7.25%CNV PFD L | 060505682 | — | 1,188 shares | $1,452,437 |
| FRESHPET INC | NOTE 3.000% 4/0 | 358039AB1 | — | 1,245,000 principal | $1,403,426 |
| PELOTON INTERACTIVE INC | NOTE 5.500%12/0 | 70614WAD2 | — | 969,000 principal | $1,381,794 |
| LIBERTY MEDIA CORP DEL | NOTE 2.250% 8/1 | 531229AQ5 | — | 1,174,000 principal | $1,376,632 |
| DROPBOX INC | NOTE 3/0 | 26210CAD6 | — | 1,224,000 principal | $1,357,659 |
| LIVE NATION ENTERTAINMENT IN | NOTE 2.875% 1/1 | 538034BC2 | — | 1,237,000 principal | $1,357,488 |
| BIOMARIN PHARMACEUTICAL INC | NOTE 1.250% 5/1 | 09061GAK7 | — | 1,344,000 principal | $1,313,090 |
| PROGRESS SOFTWARE CORP | NOTE 3.500% 3/0 | 743312AD2 | — | 1,332,000 principal | $1,308,008 |
| BLACKROCK MUNIYIELD QUALITY | COM | 09254E103 | — | 135,651 shares | $1,306,319 |
| AFFIRM HLDGS INC | NOTE 0.750%12/1 | 00827BAD8 | — | 1,253,000 principal | $1,303,926 |
| UNITY SOFTWARE INC | NOTE 3/1 | 91332UAH4 | — | 913,000 principal | $1,226,547 |
| ITRON INC | NOTE 1.375% 7/1 | 465741AQ9 | — | 1,256,000 principal | $1,210,784 |
| SIRIUSXM HOLDINGS INC | NOTE 3.750% 3/1 | 531229AP7 | — | 1,130,000 principal | $1,204,298 |
| BRIDGEBIO PHARMA INC | NOTE 2.250% 2/0 | 10806XAD4 | — | 1,167,000 principal | $1,199,165 |
| ARROWHEAD PHARMACEUTICALS IN | NOTE 1/1 | 04280AAC4 | — | 1,169,000 principal | $1,196,936 |
| ON SEMICONDUCTOR CORP | NOTE 5/0 | 682189AS4 | — | 793,000 principal | $1,177,605 |
| BURLINGTON STORES INC | NOTE 1.250%12/1 | 122017AD8 | — | 843,000 principal | $1,153,646 |
| GULFPORT ENERGY CORP | COMMON SHARES | 402635502 | — | 7,617 shares | $1,146,206 |
| RUBRIK INC. | NOTE 6/1 | 781154AD1 | — | 955,000 principal | $1,140,748 |
| NEBIUS GROUP N.V. | NOTE 1.000% 9/1 | 63954QAG1 | — | 602,000 principal | $1,114,658 |
| PARSONS CORP DEL | NOTE 2.625% 3/0 | 70202LAD4 | — | 1,183,000 principal | $1,113,151 |
| FLUOR CORP | NOTE 1.125% 8/1 | 343412AJ1 | — | 875,000 principal | $1,081,719 |
| DOORDASH INC | NOTE 5/1 | 25809KAB1 | — | 1,124,000 principal | $1,071,453 |