Mackay Shields Llc
Institutional manager — quarterly 13F holdings, Q ending 2026-03-31
Reported value
$2.73B
Q ending 2026-03-31
Prior quarter
$2.86B
Q ending 2025-12-31
Change
-4.5% QoQ · -12.3% YoY
Positions
111
reported holdings
Largest positions
Top 100 of 111 reported positions by value, Q ending 2026-03-31. A manager can hold shares, calls and puts on the same security at once — such positions are listed as separate rows. Type: Shares = common stock, Put/Call = option positions (valued at the underlying), Principal = debt. Tickers link to stock pages where covered.
| Holding | Ticker | Type | Value ▼ | Shares |
|---|---|---|---|---|
| Lumentum Hldgs Inc | LITE 0.5 06/15/28 | Principal | $143.6M | 26.8M |
| Western Digital Corp | WDC 3 11/15/28 | Principal | $110.8M | 15.5M |
| Advanced Energy Inds | AEIS 2.5 09/15/28 | Principal | $95.4M | 39.6M |
| Mirum Pharmaceuticals Inc | MIRM 4 05/01/29 | Principal | $69.0M | 23.1M |
| Qxo Inc | QXO 5.5 05/15/28 | Shares | $65.3M | 1.2M |
| Lantheus Hldgs Inc | LNTH 2.625 12/15/27 | Principal | $61.2M | 50.9M |
| Mks Inc. | MKSI 1.25 06/01/30 | Principal | $60.4M | 36.5M |
| Cable One Inc | CABO 1.125 03/15/28 | Principal | $58.4M | 77.4M |
| Tetra Tech Inc New | TTEK 2.25 08/15/28 | Principal | $57.2M | 54.5M |
| Uber Technologies Inc | UBER 0.875 12/01/28 2028 | Principal | $54.6M | 45.4M |
| Boeing Co | BA 6 10/15/27 | Shares | $53.9M | 829K |
| On Semiconductor Corp | ON 0 05/01/27 | Principal | $50.6M | 39.2M |
| Pg&E Corp | PCG 4.25 12/01/27 | Principal | $48.1M | 46.4M |
| Post Hldgs Inc | POST 2.5 08/15/27 | Principal | $43.6M | 40.2M |
| Integer Hldgs Corp | ITGR 1.875 03/15/30 | Principal | $43.3M | 45.2M |
| Apollo Global Mgmt Inc | APO 6.75 07/31/26 | Shares | $42.0M | 714K |
| Liberty Media Corp Del | FWONK 2.25 08/15/27 | Principal | $39.3M | 34.0M |
| Akamai Technologies Inc | AKAM 0.375 09/01/27 | Principal | $39.2M | 33.8M |
| Hewlett Packard Enterprise C | HPE 7.625 09/01/27 | Shares | $39.0M | 602K |
| Snowflake Inc | SNOW 0 10/01/27 | Principal | $38.5M | 32.6M |
| Ncl Corp Ltd | NCLH 1.125 02/15/27 | Principal | $38.0M | 38.9M |
| Bridgebio Pharma Inc | BBIO 2.25 02/01/29 | Principal | $37.4M | 33.3M |
| Northern Oil & Gas Inc | NOG 3.625 04/15/29 | Principal | $36.6M | 33.3M |
| Freshpet Inc | FRPT 3 04/01/28 | Principal | $36.6M | 31.8M |
| Irhythm Holdings Inc | IRTC 1.5 09/01/29 | Principal | $35.8M | 32.6M |
| Blackrock Mun Target Term Tr | BTT | Shares | $35.6M | 1.6M |
| Chefs Whse Inc | CHEF 2.375 12/15/28 | Principal | $35.1M | 23.7M |
| Ishares Gold Tr | IAU | Shares | $34.4M | 390K |
| Microchip Technology Inc. | MCHP 7.5 03/15/28 | Shares | $34.3M | 601K |
| Burlington Stores Inc | BURL 1.25 12/15/27 | Principal | $33.7M | 20.4M |
| Patrick Inds Inc | PATK 1.75 12/01/28 | Principal | $33.2M | 19.1M |
| Datadog Inc | DDOG 0 12/01/29 | Principal | $32.8M | 33.8M |
| Fluor Corp | FLR 1.125 08/15/29 | Principal | $32.5M | 26.3M |
| Live Nation Entertainment In | LYV 2.875 01/15/30 | Principal | $32.1M | 29.7M |
| Etsy Inc | ETSY 0.125 10/01/26 | Principal | $32.0M | 32.7M |
| Seagate Hdd Cayman | STX 3.5 06/01/28 | Principal | $31.5M | 6.6M |
| Oracle Corp | ORCL 6.5 01/15/29 D | Shares | $29.7M | 647K |
| Dexcom Inc | DXCM 0.375 05/15/28 | Principal | $27.6M | 30.0M |
| Meritage Homes Corp | MTH 1.75 05/15/28 | Principal | $27.2M | 28.1M |
| Unity Software Inc | U 0 03/15/30 | Principal | $26.8M | 26.9M |
| Nutanix Inc | NTNX 0.5 12/15/29 | Principal | $26.8M | 29.6M |
| Nextera Energy Inc | NEE 7.299 06/01/27 | Shares | $26.7M | 473K |
| Peloton Interactive Inc | PTON 5.5 12/01/29 | Principal | $26.0M | 19.4M |
| Parsons Corp Del | PSN 2.625 03/01/29 | Principal | $25.8M | 26.1M |
| Biomarin Pharmaceutical Inc | BMRN 1.25 05/15/27 | Principal | $25.6M | 26.5M |
| Progress Software Corp | PRGS 3.5 03/01/30 | Principal | $25.6M | 28.7M |
| Liberty Media Corp Del | SIRI 3.75 03/15/28 | Principal | $25.5M | 24.5M |
| Affirm Hldgs Inc | AFRM 0.75 12/15/29 | Principal | $25.5M | 27.1M |
| Nine Energy Service Inc | NINE | Shares | $25.1M | 3.1M |
| Guidewire Software Inc | GWRE 1.25 11/01/29 | Principal | $25.1M | 25.1M |
| Bank America Corp | BAC 7.25 PERP L | Shares | $24.9M | 21K |
| Dropbox Inc | DBX 0 03/01/28 | Principal | $23.1M | 24.3M |
| Blackrock Muniyield N Y Qual | MYN | Shares | $22.6M | 2.3M |
| Blackrock Muniholdings Fd In | MHD | Shares | $22.4M | 2.0M |
| Greenbrier Cos Inc | GBX 2.875 04/15/28 | Principal | $22.0M | 19.0M |
| Talos Energy Inc | TALO | Shares | $20.9M | 1.3M |
| Gulfport Energy Corp | GPOR | Shares | $20.9M | 99K |
| Rivian Automotive Inc | RIVN 4.625 03/15/29 | Principal | $19.9M | 18.6M |
| Alnylam Pharmaceuticals Inc | ALNY 1 09/15/27 | Principal | $19.1M | 14.8M |
| Shift4 Pmts Inc | FOUR 0.5 08/01/27 | Principal | $18.4M | 19.5M |
| Upstart Hldgs Inc | UPST 1 11/15/30 | Principal | $17.9M | 25.2M |
| Ares Management Corporation | ARES 6.75 10/01/27 B | Shares | $17.8M | 480K |
| Blackrock Muniyild Qult Fd I | MQY | Shares | $17.5M | 1.6M |
| Wells Fargo & Co | WFC 7.5 PERP L | Shares | $17.1M | 15K |
| Synaptics Inc | SYNA 0.75 12/01/31 | Principal | $16.8M | 16.2M |
| Jazz Investments I Ltd | JAZZ 2 06/15/26 | Principal | $15.9M | 13.1M |
| Workiva Inc | WK 1.25 08/15/28 | Principal | $15.8M | 16.9M |
| Ionis Pharmaceuticals Inc | IONS 1.75 06/15/28 | Principal | $15.7M | 10.4M |
| Lumentum Hldgs Inc | LITE 0.5 12/15/26 | Principal | $15.6M | 2.2M |
| Cheesecake Factory Inc | CAKE 0.375 06/15/26 | Principal | $15.2M | 15.4M |
| Mgp Ingredients Inc New | MGPI 1.875 11/15/41 | Principal | $13.8M | 14.3M |
| Bill Holdings Inc | BILL 0 04/01/30 | Principal | $13.5M | 15.1M |
| Blackrock Munihldgs Nj Qlty | MUJ | Shares | $13.3M | 1.1M |
| Q2 Hldgs Inc | QTWO 0.75 06/01/26 | Principal | $13.2M | 13.3M |
| Aerovironment Inc | AVAV 0 07/15/30 | Principal | $13.0M | 13.2M |
| Global Pmts Inc | GPN 1.5 03/01/31 | Principal | $11.4M | 12.9M |
| Vertex Inc | VERX 0.75 05/01/29 | Principal | $8.0M | 9.2M |
| Spectrum Brands Inc | SPB 3.375 06/01/29 | Principal | $7.9M | 7.9M |
| Blackrock Muniyield Mich Qu | MIY | Shares | $7.8M | 659K |
| Teladoc Health Inc | TDOC 1.25 06/01/27 | Principal | $7.2M | 7.5M |
| Live Nation Entertainment In | LYV 3.125 01/15/29 | Principal | $7.2M | 4.7M |
| Osi Systems Inc | OSIS 2.25 08/01/29 | Principal | $6.9M | 4.5M |
| Cloudflare Inc | NET 0 08/15/26 | Principal | $6.6M | 5.7M |
| Spdr Gold Tr | GLD | Shares | $6.6M | 15K |
| Wec Energy Group Inc | WEC 4.375 06/01/29 | Principal | $6.5M | 5.3M |
| Neuberger Mun Fd Inc | NBH | Shares | $6.3M | 623K |
| Southern Co | SO 4.5 06/15/27 | Principal | $6.3M | 5.6M |
| Warner Bros Discovery Inc | WBD | Shares | $6.2M | 226K |
| Halozyme Therapeutics Inc | HALO 0.25 03/01/27 | Principal | $5.6M | 5.4M |
| Blackrock Muniyield Quality | MYI | Shares | $5.5M | 526K |
| Five9 Inc | FIVN 1 03/15/29 | Principal | $5.5M | 6.3M |
| Nuveen Ny Amt Free | NRK | Shares | $5.3M | 520K |
| Nutanix Inc | NTNX 0.25 10/01/27 | Principal | $4.7M | 4.6M |
| Integer Hldgs Corp | ITGR 2.125 02/15/28 | Principal | $4.5M | 3.8M |
| Abrdn Natl Mun Income Fd | XVFLX | Shares | $4.0M | 402K |
| Arrowhead Pharmaceuticals In | ARWR 0 01/15/32 | Principal | $3.1M | 3.0M |
| Invesco Tr Invt Grade Muns | VGM | Shares | $2.1M | 209K |
| Invesco Municipal Trust | VKQ | Shares | $2.0M | 209K |
| Mfs Mun Income Tr | MFM | Shares | $1.8M | 333K |
| Blackrock Munihldngs Cali | MUC | Shares | $1.5M | 147K |
Values as reported in public regulatory filings (USD); holdings are reported quarterly, up to 45 days after quarter end, and may contain reporting errors. Nothing here is investment advice.