MACKAY SHIELDS LLC Diversified Active

Location: New York, NY

CIK: 0000061227 · Show all filings

Period: Q4 2025 (← Previous) (Next →)

Filing Date: Jan 29, 2026

Total Value: $2.857B (23.2% shares, 76.8% debt)

Holdings (132)

— WESTERN DIGITAL CORP 3.0%
Value $86.59M Shares 18,882,000 Share Price $4.59 Est. Cost/Share $1.32 Unrealized @ Report Date —
— LUMENTUM HLDGS INC 3.0%
Value $85.34M Shares 30,037,000 Share Price $2.84 Est. Cost/Share $0.97 Unrealized @ Report Date —
— ADVANCED ENERGY INDS 2.6%
Value $73.28M Shares 44,638,000 Share Price $1.64 Est. Cost/Share $1.05 Unrealized @ Report Date —
— MIRUM PHARMACEUTICALS INC 2.3%
Value $65.98M Shares 25,532,000 Share Price $2.58 Est. Cost/Share $1.35 Unrealized @ Report Date —
— LANTHEUS HLDGS INC 2.3%
Value $65.1M Shares 56,714,000 Share Price $1.15 Est. Cost/Share $1.13 Unrealized @ Report Date —
— QXO INC 2.3%
Value $65.02M Shares 1,171,159 Share Price $55.52 Est. Cost/Share $60.15 Unrealized @ Report Date —
— TETRA TECH INC NEW 2.3%
Value $64.82M Shares 59,623,000 Share Price $1.09 Est. Cost/Share $1.31 Unrealized @ Report Date —
— BOEING CO 2.0%
Value $57.66M Shares 830,097 Share Price $69.47 Est. Cost/Share $63.28 Unrealized @ Report Date —
— CABLE ONE INC 2.0%
Value $56.65M Shares 69,399,000 Share Price $0.82 Est. Cost/Share $0.79 Unrealized @ Report Date —
— UBER TECHNOLOGIES INC 1.9%
Value $55.4M Shares 42,644,000 Share Price $1.30 Est. Cost/Share $1.12 Unrealized @ Report Date —
— APOLLO GLOBAL MGMT INC 1.9%
Value $53.91M Shares 714,292 Share Price $75.48 Est. Cost/Share $54.97 Unrealized @ Report Date —
— POST HLDGS INC 1.9%
Value $53.39M Shares 49,514,000 Share Price $1.08 Est. Cost/Share $1.03 Unrealized @ Report Date —
— PG&E CORP 1.9%
Value $52.99M Shares 51,451,000 Share Price $1.03 Est. Cost/Share $1.09 Unrealized @ Report Date —
— ON SEMICONDUCTOR CORP 1.6%
Value $46.97M Shares 39,380,000 Share Price $1.19 Est. Cost/Share $1.19 Unrealized @ Report Date —
— MKS INC. 1.6%
Value $46.7M Shares 36,548,000 Share Price $1.28 Est. Cost/Share $0.99 Unrealized @ Report Date —
— IRHYTHM TECHNOLOGIES INC 1.6%
Value $45.74M Shares 32,682,000 Share Price $1.40 Est. Cost/Share $1.15 Unrealized @ Report Date —
— SEAGATE HDD CAYMAN 1.6%
Value $44.71M Shares 13,293,000 Share Price $3.36 Est. Cost/Share $1.44 Unrealized @ Report Date —
— SNOWFLAKE INC 1.6%
Value $44.39M Shares 29,853,000 Share Price $1.49 Est. Cost/Share $1.52 Unrealized @ Report Date —
— LIBERTY MEDIA CORP DEL 1.5%
Value $43.13M Shares 34,036,000 Share Price $1.27 Est. Cost/Share $0.99 Unrealized @ Report Date —
— HEWLETT PACKARD ENTERPRISE C 1.4%
Value $39.62M Shares 597,863 Share Price $66.27 Est. Cost/Share $54.39 Unrealized @ Report Date —
— NCL CORP LTD 1.4%
Value $38.89M Shares 38,891,000 Share Price $1.00 Est. Cost/Share $0.93 Unrealized @ Report Date —
IAU ISHARES GOLD TR 1.3%
Value $38.56M Shares 475,000 Share Price $81.17 Est. Cost/Share $34.57 Unrealized @ Report Date +134.8%
— SHIFT4 PMTS INC 1.3%
Value $38.05M Shares 39,492,000 Share Price $0.96 Est. Cost/Share $1.08 Unrealized @ Report Date —
— ETSY INC 1.3%
Value $37.49M Shares 37,045,000 Share Price $1.01 Est. Cost/Share $1.05 Unrealized @ Report Date —
— CHEFS WHSE INC 1.3%
Value $36.16M Shares 23,784,000 Share Price $1.52 Est. Cost/Share $1.01 Unrealized @ Report Date —
— PATRICK INDS INC 1.3%
Value $35.98M Shares 21,148,000 Share Price $1.70 Est. Cost/Share $0.91 Unrealized @ Report Date —
— MERITAGE HOMES CORP 1.3%
Value $35.92M Shares 36,370,000 Share Price $0.99 Est. Cost/Share $0.97 Unrealized @ Report Date —
— MICROCHIP TECHNOLOGY INC. 1.2%
Value $35.14M Shares 601,474 Share Price $58.42 Est. Cost/Share $52.97 Unrealized @ Report Date —
— AKAMAI TECHNOLOGIES INC 1.2%
Value $34.01M Shares 33,859,000 Share Price $1.00 Est. Cost/Share $1.10 Unrealized @ Report Date —
— DEXCOM INC 1.2%
Value $33.98M Shares 36,913,000 Share Price $0.92 Est. Cost/Share $0.94 Unrealized @ Report Date —
— DATADOG INC 1.2%
Value $33.84M Shares 33,802,000 Share Price $1.00 Est. Cost/Share $1.00 Unrealized @ Report Date —
— BIOMARIN PHARMACEUTICAL INC 1.2%
Value $33.27M Shares 34,655,000 Share Price $0.96 Est. Cost/Share $1.02 Unrealized @ Report Date —
TALO TALOS ENERGY INC 1.2%
Value $33.15M Shares 3,008,435 Share Price $11.02 Est. Cost/Share $32.68 Unrealized @ Report Date -66.3%
— BRIDGEBIO PHARMA INC 1.1%
Value $32.3M Shares 28,678,000 Share Price $1.13 Est. Cost/Share $0.84 Unrealized @ Report Date —
— FORD MTR CO 1.1%
Value $31.31M Shares 30,093,000 Share Price $1.04 Est. Cost/Share $1.15 Unrealized @ Report Date —
— LIVE NATION ENTERTAINMENT IN 1.1%
Value $31.26M Shares 29,685,000 Share Price $1.05 Est. Cost/Share $1.05 Unrealized @ Report Date —
— BLACKROCK MUN TARGET TERM TR 1.1%
Value $31.13M Shares 1,364,127 Share Price $22.82 Est. Cost/Share $24.19 Unrealized @ Report Date —
— TYLER TEX INDPT SCH DIST 1.1%
Value $30.73M Shares 30,319,000 Share Price $1.01 Est. Cost/Share $1.23 Unrealized @ Report Date —
— BURLINGTON STORES INC 1.1%
Value $30.28M Shares 20,379,000 Share Price $1.49 Est. Cost/Share $1.41 Unrealized @ Report Date —
— FLUOR CORP 1.1%
Value $30.01M Shares 26,298,000 Share Price $1.14 Est. Cost/Share $1.31 Unrealized @ Report Date —
— LIBERTY MEDIA CORP DEL 1.0%
Value $29.77M Shares 29,575,000 Share Price $1.01 Est. Cost/Share $1.23 Unrealized @ Report Date —
— PROGRESS SOFTWARE CORP 1.0%
Value $29.04M Shares 28,642,000 Share Price $1.01 Est. Cost/Share $1.08 Unrealized @ Report Date —
— NORTHERN OIL & GAS INC 1.0%
Value $29.03M Shares 30,023,000 Share Price $0.97 Est. Cost/Share $1.17 Unrealized @ Report Date —
— NUTANIX INC 1.0%
Value $28.63M Shares 29,610,000 Share Price $0.97 Est. Cost/Share $0.97 Unrealized @ Report Date —
— GUIDEWIRE SOFTWARE INC 1.0%
Value $27.71M Shares 25,147,000 Share Price $1.10 Est. Cost/Share $1.10 Unrealized @ Report Date —
— PARSONS CORP DEL 0.9%
Value $26.93M Shares 26,133,000 Share Price $1.03 Est. Cost/Share $1.01 Unrealized @ Report Date —
— AFFIRM HLDGS INC 0.9%
Value $26.92M Shares 24,259,000 Share Price $1.11 Est. Cost/Share $1.11 Unrealized @ Report Date —
— BANK AMERICA CORP 0.9%
Value $26.2M Shares 20,927 Share Price $1252.08 Est. Cost/Share $1416.89 Unrealized @ Report Date —
— Q2 HLDGS INC 0.9%
Value $25.86M Shares 25,530,000 Share Price $1.01 Est. Cost/Share $1.18 Unrealized @ Report Date —
— BLACKROCK MUNIHOLDINGS FD IN 0.9%
Value $25.43M Shares 2,166,270 Share Price $11.74 Est. Cost/Share $13.19 Unrealized @ Report Date —
— FRESHPET INC 0.9%
Value $25M Shares 21,347,000 Share Price $1.17 Est. Cost/Share $1.13 Unrealized @ Report Date —
— CABLE ONE INC 0.9%
Value $24.66M Shares 24,975,000 Share Price $0.99 Est. Cost/Share $0.84 Unrealized @ Report Date —
— DROPBOX INC 0.9%
Value $24.58M Shares 24,323,000 Share Price $1.01 Est. Cost/Share $0.95 Unrealized @ Report Date —
— NEXTERA ENERGY INC 0.8%
Value $23.95M Shares 463,345 Share Price $51.69 Est. Cost/Share $49.98 Unrealized @ Report Date —
— ARES MANAGEMENT CORPORATION 0.8%
Value $23.91M Shares 473,045 Share Price $50.54 Est. Cost/Share $56.05 Unrealized @ Report Date —
— RIVIAN AUTOMOTIVE INC 0.8%
Value $23.39M Shares 18,581,000 Share Price $1.26 Est. Cost/Share $0.82 Unrealized @ Report Date —
GPOR GULFPORT ENERGY CORP 0.8%
Value $22.59M Shares 108,592 Share Price $207.99 Est. Cost/Share $170.19 Unrealized @ Report Date +22.2%
— UPSTART HLDGS INC 0.8%
Value $22.05M Shares 25,168,000 Share Price $0.88 Est. Cost/Share $0.88 Unrealized @ Report Date —
— ALNYLAM PHARMACEUTICALS INC 0.8%
Value $21.85M Shares 14,838,000 Share Price $1.47 Est. Cost/Share $0.98 Unrealized @ Report Date —
— GREENBRIER COS INC 0.7%
Value $20.52M Shares 19,032,000 Share Price $1.08 Est. Cost/Share $0.94 Unrealized @ Report Date —
— WELLS FARGO CO NEW 0.6%
Value $17.97M Shares 14,770 Share Price $1216.40 Est. Cost/Share $1489.39 Unrealized @ Report Date —
— LUMENTUM HLDGS INC 0.6%
Value $17.79M Shares 4,796,000 Share Price $3.71 Est. Cost/Share $1.22 Unrealized @ Report Date —
— VERTEX INC 0.6%
Value $17.22M Shares 18,123,000 Share Price $0.95 Est. Cost/Share $1.20 Unrealized @ Report Date —
— SYNAPTICS INC 0.6%
Value $17.11M Shares 16,169,000 Share Price $1.06 Est. Cost/Share $1.06 Unrealized @ Report Date —
— WORKIVA INC 0.6%
Value $16.67M Shares 16,850,000 Share Price $0.99 Est. Cost/Share $0.95 Unrealized @ Report Date —
— IONIS PHARMACEUTICALS INC 0.6%
Value $16.57M Shares 10,410,000 Share Price $1.59 Est. Cost/Share $1.04 Unrealized @ Report Date —
— IMPINJ INC 0.6%
Value $16.14M Shares 9,890,000 Share Price $1.63 Est. Cost/Share $1.20 Unrealized @ Report Date —
— GLOBAL PMTS INC 0.6%
Value $15.85M Shares 17,619,000 Share Price $0.90 Est. Cost/Share $0.95 Unrealized @ Report Date —
— CHEESECAKE FACTORY INC 0.5%
Value $15.28M Shares 15,451,000 Share Price $0.99 Est. Cost/Share $0.98 Unrealized @ Report Date —
— JAZZ INVESTMENTS I LTD 0.5%
Value $15.18M Shares 13,087,000 Share Price $1.16 Est. Cost/Share $1.02 Unrealized @ Report Date —
— BLACKROCK MUNIHLDGS NJ QLTY 0.5%
Value $14.67M Shares 1,232,873 Share Price $11.90 Est. Cost/Share $13.30 Unrealized @ Report Date —
— TELADOC HEALTH INC 0.5%
Value $14.51M Shares 15,194,000 Share Price $0.95 Est. Cost/Share $1.12 Unrealized @ Report Date —
— BILL HOLDINGS INC 0.5%
Value $13.93M Shares 15,102,000 Share Price $0.92 Est. Cost/Share $0.92 Unrealized @ Report Date —
— MGP INGREDIENTS INC NEW 0.5%
Value $13.78M Shares 14,222,000 Share Price $0.97 Est. Cost/Share $1.26 Unrealized @ Report Date —
— NEUBERGER MUN FD INC 0.4%
Value $12.48M Shares 1,233,578 Share Price $10.12 Est. Cost/Share $10.29 Unrealized @ Report Date —
— BLACKROCK MUNIHLDGS NY QLTY 0.4%
Value $12.19M Shares 1,191,469 Share Price $10.23 Est. Cost/Share $13.39 Unrealized @ Report Date —
— RAPID7 INC 0.4%
Value $11.7M Shares 12,790,000 Share Price $0.91 Est. Cost/Share $0.94 Unrealized @ Report Date —
— BLACKROCK MUNIYIELD N Y QUAL 0.4%
Value $11.64M Shares 1,174,171 Share Price $9.91 Est. Cost/Share $11.54 Unrealized @ Report Date —
— FIVE9 INC 0.4%
Value $11.56M Shares 12,805,000 Share Price $0.90 Est. Cost/Share $0.86 Unrealized @ Report Date —
— AEROVIRONMENT INC 0.4%
Value $11.1M Shares 10,210,000 Share Price $1.09 Est. Cost/Share $1.24 Unrealized @ Report Date —
— BLACKROCK MUNIHLDNGS CALI QL 0.4%
Value $10.4M Shares 981,326 Share Price $10.60 Est. Cost/Share $10.75 Unrealized @ Report Date —
XMQTX BLACKROCK MUNIYIELD QUALITY 0.4%
Value $10.14M Shares 1,008,573 Share Price $10.05 Est. Cost/Share $12.87 Unrealized @ Report Date —
— HAEMONETICS CORP MASS 0.3%
Value $8.405M Shares 8,498,000 Share Price $0.99 Est. Cost/Share $0.83 Unrealized @ Report Date —
— BLACKROCK MUN INCOME TR 0.3%
Value $8.363M Shares 833,784 Share Price $10.03 Est. Cost/Share $10.08 Unrealized @ Report Date —
XMVFX BLACKROCK MUNIVEST FD INC 0.3%
Value $8.263M Shares 1,192,311 Share Price $6.93 Est. Cost/Share $7.10 Unrealized @ Report Date —
— AMPHASTAR PHARMACEUTICALS IN 0.3%
Value $8.096M Shares 8,733,000 Share Price $0.93 Est. Cost/Share $1.06 Unrealized @ Report Date —
— BLACKROCK MUNIYIELD MICH QU 0.3%
Value $7.805M Shares 664,819 Share Price $11.74 Est. Cost/Share $14.50 Unrealized @ Report Date —
— SPECTRUM BRANDS INC 0.3%
Value $7.45M Shares 7,857,000 Share Price $0.95 Est. Cost/Share $0.91 Unrealized @ Report Date —
XMYDX BLACKROCK MUNIYIELD FD INC 0.3%
Value $7.315M Shares 697,362 Share Price $10.49 Est. Cost/Share $10.68 Unrealized @ Report Date —
— LIVE NATION ENTERTAINMENT IN 0.2%
Value $6.959M Shares 4,789,000 Share Price $1.45 Est. Cost/Share $1.20 Unrealized @ Report Date —
— EXPEDIA GROUP INC 0.2%
Value $6.857M Shares 6,133,000 Share Price $1.12 Est. Cost/Share $1.19 Unrealized @ Report Date —
— CLOUDFLARE INC 0.2%
Value $6.709M Shares 5,715,000 Share Price $1.17 Est. Cost/Share $1.01 Unrealized @ Report Date —
— OSI SYSTEMS INC 0.2%
Value $6.706M Shares 4,522,000 Share Price $1.48 Est. Cost/Share $1.45 Unrealized @ Report Date —
— CONMED CORP 0.2%
Value $6.694M Shares 6,973,000 Share Price $0.96 Est. Cost/Share $1.10 Unrealized @ Report Date —
WBD WARNER BROS DISCOVERY INC 0.2%
Value $6.521M Shares 226,250 Share Price $28.82 Est. Cost/Share $13.62 Unrealized @ Report Date +111.6%
— NUVEEN NEW YORK AMT QLT MUNI 0.2%
Value $6.469M Shares 641,105 Share Price $10.09 Est. Cost/Share $12.77 Unrealized @ Report Date —
— WEC ENERGY GROUP INC 0.2%
Value $6.223M Shares 5,334,000 Share Price $1.17 Est. Cost/Share $1.23 Unrealized @ Report Date —
GLD SPDR GOLD TR 0.2%
Value $6.078M Shares 15,336 Share Price $396.31 Est. Cost/Share $114.62 Unrealized @ Report Date +245.7%
— SOUTHERN CO 0.2%
Value $5.973M Shares 5,598,000 Share Price $1.07 Est. Cost/Share $1.11 Unrealized @ Report Date —
— HALOZYME THERAPEUTICS INC 0.2%
Value $5.645M Shares 5,239,000 Share Price $1.08 Est. Cost/Share $1.15 Unrealized @ Report Date —
— DROPBOX INC 0.2%
Value $5.577M Shares 5,630,000 Share Price $0.99 Est. Cost/Share $0.94 Unrealized @ Report Date —
— VAIL RESORTS INC 0.2%
Value $5.397M Shares 5,408,000 Share Price $1.00 Est. Cost/Share $1.06 Unrealized @ Report Date —
— BLACKROCK MUN INCOME QUALITY 0.2%
Value $5.247M Shares 479,613 Share Price $10.94 Est. Cost/Share $10.74 Unrealized @ Report Date —
— NUTANIX INC 0.2%
Value $5.092M Shares 4,534,000 Share Price $1.12 Est. Cost/Share $1.21 Unrealized @ Report Date —
— BENTLEY SYS INC 0.2%
Value $4.338M Shares 4,346,000 Share Price $1.00 Est. Cost/Share $0.98 Unrealized @ Report Date —
— INTEGER HLDGS CORP 0.1%
Value $4.194M Shares 3,726,000 Share Price $1.13 Est. Cost/Share $1.45 Unrealized @ Report Date —
— OIL STS INTL INC 0.1%
Value $4.15M Shares 4,136,000 Share Price $1.00 Est. Cost/Share $0.81 Unrealized @ Report Date —
— ABRDN NATL MUN INCOME FD 0.1%
Value $4.125M Shares 401,695 Share Price $10.27 Est. Cost/Share $13.32 Unrealized @ Report Date —
— NUVEEN MUNICIPAL CREDIT INC 0.1%
Value $4.082M Shares 324,502 Share Price $12.58 Est. Cost/Share $12.32 Unrealized @ Report Date —
— BLACKROCK MUNIYILD QULT FD I 0.1%
Value $4.044M Shares 357,837 Share Price $11.30 Est. Cost/Share $16.64 Unrealized @ Report Date —
— BLACKROCK MUNI INCOME TR II 0.1%
Value $3.8M Shares 363,951 Share Price $10.44 Est. Cost/Share $10.37 Unrealized @ Report Date —
— IONIS PHARMACEUTICALS INC 0.1%
Value $3.792M Shares 2,768,000 Share Price $1.37 Est. Cost/Share $0.95 Unrealized @ Report Date —
— INVESCO TR INVT GRADE MUNS 0.1%
Value $3.2M Shares 308,543 Share Price $10.37 Est. Cost/Share $10.40 Unrealized @ Report Date —
— INVESCO MUNICIPAL TRUST 0.1%
Value $3.137M Shares 325,107 Share Price $9.65 Est. Cost/Share $10.15 Unrealized @ Report Date —
— EATON VANCE MUN BD FD 0.1%
Value $3.102M Shares 318,814 Share Price $9.73 Est. Cost/Share $10.17 Unrealized @ Report Date —
— NUVEEN PENNSYLVANIA QLT MUN 0.1%
Value $2.725M Shares 229,220 Share Price $11.89 Est. Cost/Share $14.14 Unrealized @ Report Date —
XBNYX BLACKROCK N Y MUN INCOME TRU 0.1%
Value $2.216M Shares 218,559 Share Price $10.14 Est. Cost/Share $11.76 Unrealized @ Report Date —
— INVESCO MUN OPPORTUNITY TR 0.1%
Value $1.965M Shares 205,338 Share Price $9.57 Est. Cost/Share $9.80 Unrealized @ Report Date —
— MFS MUN INCOME TR 0.1%
Value $1.844M Shares 339,657 Share Price $5.43 Est. Cost/Share $6.77 Unrealized @ Report Date —
CWB SPDR SERIES TRUST 0.0%
Value $1.216M Shares 13,633 Share Price $89.20 Est. Cost/Share $90.91 Unrealized @ Report Date -1.9%
XBKNX BLACKROCK INVT QUALITY MUN T 0.0%
Value $1.031M Shares 92,077 Share Price $11.20 Est. Cost/Share $11.49 Unrealized @ Report Date —
— INVESCO ADVANTAGE MUN INCOME 0.0%
Value $965K Shares 105,768 Share Price $9.12 Est. Cost/Share $8.88 Unrealized @ Report Date —
— DWS MUN INCOME TR NEW 0.0%
Value $841K Shares 92,505 Share Price $9.09 Est. Cost/Share $11.01 Unrealized @ Report Date —
TPB TURNING PT BRANDS INC 0.0%
Value $737K Shares 6,802 Share Price $108.40 Est. Cost/Share $30.89 Unrealized @ Report Date +250.9%
XMVTX BLACKROCK MUNIVEST FD II INC 0.0%
Value $710K Shares 65,678 Share Price $10.81 Est. Cost/Share $10.57 Unrealized @ Report Date —
— BLACKLINE INC 0.0%
Value $671K Shares 635,000 Share Price $1.06 Est. Cost/Share $1.07 Unrealized @ Report Date —
— PPL CAP FDG INC 0.0%
Value $549K Shares 500,000 Share Price $1.10 Est. Cost/Share $0.96 Unrealized @ Report Date —
— DUKE ENERGY CORP NEW 0.0%
Value $516K Shares 500,000 Share Price $1.03 Est. Cost/Share $1.00 Unrealized @ Report Date —
WW WW INTL INC 0.0%
Value $420K Shares 14,371 Share Price $29.22 Est. Cost/Share $34.35 Unrealized @ Report Date -14.9%
SECR NEW YORK LIFE INVTS ACTIVE E 0.0%
Value $287K Shares 11,136 Share Price $25.73 Est. Cost/Share $26.15 Unrealized @ Report Date -1.6%
— INVESCO PA VALUE MUN INC TR 0.0%
Value $151K Shares 14,433 Share Price $10.46 Est. Cost/Share $12.71 Unrealized @ Report Date —
— CHEGG INC 0.0%
Value $40,208 Shares 45,000 Share Price $0.89 Est. Cost/Share $0.99 Unrealized @ Report Date —