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 Est. Cost $1.32 Unrealized
LUMENTUM HLDGS INC 3.0%
Value $85.34M Shares 30,037,000 Est. Cost $0.97 Unrealized
ADVANCED ENERGY INDS 2.6%
Value $73.28M Shares 44,638,000 Est. Cost $1.05 Unrealized
MIRUM PHARMACEUTICALS INC 2.3%
Value $65.98M Shares 25,532,000 Est. Cost $1.35 Unrealized
LANTHEUS HLDGS INC 2.3%
Value $65.1M Shares 56,714,000 Est. Cost $1.13 Unrealized
QXO INC 2.3%
Value $65.02M Shares 1,171,159 Est. Cost $60.15 Unrealized
TETRA TECH INC NEW 2.3%
Value $64.82M Shares 59,623,000 Est. Cost $1.31 Unrealized
BOEING CO 2.0%
Value $57.66M Shares 830,097 Est. Cost $63.28 Unrealized
CABLE ONE INC 2.0%
Value $56.65M Shares 69,399,000 Est. Cost $0.79 Unrealized
UBER TECHNOLOGIES INC 1.9%
Value $55.4M Shares 42,644,000 Est. Cost $1.12 Unrealized
APOLLO GLOBAL MGMT INC 1.9%
Value $53.91M Shares 714,292 Est. Cost $54.97 Unrealized
POST HLDGS INC 1.9%
Value $53.39M Shares 49,514,000 Est. Cost $1.03 Unrealized
PG&E CORP 1.9%
Value $52.99M Shares 51,451,000 Est. Cost $1.09 Unrealized
ON SEMICONDUCTOR CORP 1.6%
Value $46.97M Shares 39,380,000 Est. Cost $1.19 Unrealized
MKS INC. 1.6%
Value $46.7M Shares 36,548,000 Est. Cost $0.99 Unrealized
IRHYTHM TECHNOLOGIES INC 1.6%
Value $45.74M Shares 32,682,000 Est. Cost $1.15 Unrealized
SEAGATE HDD CAYMAN 1.6%
Value $44.71M Shares 13,293,000 Est. Cost $1.44 Unrealized
SNOWFLAKE INC 1.6%
Value $44.39M Shares 29,853,000 Est. Cost $1.52 Unrealized
LIBERTY MEDIA CORP DEL 1.5%
Value $43.13M Shares 34,036,000 Est. Cost $0.99 Unrealized
HEWLETT PACKARD ENTERPRISE C 1.4%
Value $39.62M Shares 597,863 Est. Cost $54.39 Unrealized
NCL CORP LTD 1.4%
Value $38.89M Shares 38,891,000 Est. Cost $0.93 Unrealized
IAU ISHARES GOLD TR 1.3%
Value $38.56M Shares 475,000 Est. Cost $33.71 Unrealized
SHIFT4 PMTS INC 1.3%
Value $38.05M Shares 39,492,000 Est. Cost $1.08 Unrealized
ETSY INC 1.3%
Value $37.49M Shares 37,045,000 Est. Cost $1.05 Unrealized
CHEFS WHSE INC 1.3%
Value $36.16M Shares 23,784,000 Est. Cost $1.01 Unrealized
PATRICK INDS INC 1.3%
Value $35.98M Shares 21,148,000 Est. Cost $0.91 Unrealized
MERITAGE HOMES CORP 1.3%
Value $35.92M Shares 36,370,000 Est. Cost $0.97 Unrealized
MICROCHIP TECHNOLOGY INC. 1.2%
Value $35.14M Shares 601,474 Est. Cost $52.97 Unrealized
AKAMAI TECHNOLOGIES INC 1.2%
Value $34.01M Shares 33,859,000 Est. Cost $1.10 Unrealized
DEXCOM INC 1.2%
Value $33.98M Shares 36,913,000 Est. Cost $0.94 Unrealized
DATADOG INC 1.2%
Value $33.84M Shares 33,802,000 Est. Cost $1.00 Unrealized
BIOMARIN PHARMACEUTICAL INC 1.2%
Value $33.27M Shares 34,655,000 Est. Cost $1.02 Unrealized
TALO TALOS ENERGY INC 1.2%
Value $33.15M Shares 3,008,435 Est. Cost $32.68 Unrealized -68.0%
BRIDGEBIO PHARMA INC 1.1%
Value $32.3M Shares 28,678,000 Est. Cost $0.84 Unrealized
FORD MTR CO 1.1%
Value $31.31M Shares 30,093,000 Est. Cost $1.15 Unrealized
LIVE NATION ENTERTAINMENT IN 1.1%
Value $31.26M Shares 29,685,000 Est. Cost $1.05 Unrealized
BLACKROCK MUN TARGET TERM TR 1.1%
Value $31.13M Shares 1,364,127 Est. Cost $24.19 Unrealized
TYLER TEX INDPT SCH DIST 1.1%
Value $30.73M Shares 30,319,000 Est. Cost $1.23 Unrealized
BURLINGTON STORES INC 1.1%
Value $30.28M Shares 20,379,000 Est. Cost $1.41 Unrealized
FLUOR CORP 1.1%
Value $30.01M Shares 26,298,000 Est. Cost $1.31 Unrealized
LIBERTY MEDIA CORP DEL 1.0%
Value $29.77M Shares 29,575,000 Est. Cost $1.23 Unrealized
PROGRESS SOFTWARE CORP 1.0%
Value $29.04M Shares 28,642,000 Est. Cost $1.08 Unrealized
NORTHERN OIL & GAS INC 1.0%
Value $29.03M Shares 30,023,000 Est. Cost $1.17 Unrealized
NUTANIX INC 1.0%
Value $28.63M Shares 29,610,000 Est. Cost $0.97 Unrealized
GUIDEWIRE SOFTWARE INC 1.0%
Value $27.71M Shares 25,147,000 Est. Cost $1.10 Unrealized
PARSONS CORP DEL 0.9%
Value $26.93M Shares 26,133,000 Est. Cost $1.01 Unrealized
AFFIRM HLDGS INC 0.9%
Value $26.92M Shares 24,259,000 Est. Cost $1.11 Unrealized
BANK AMERICA CORP 0.9%
Value $26.2M Shares 20,927 Est. Cost $1416.89 Unrealized
Q2 HLDGS INC 0.9%
Value $25.86M Shares 25,530,000 Est. Cost $1.18 Unrealized
BLACKROCK MUNIHOLDINGS FD IN 0.9%
Value $25.43M Shares 2,166,270 Est. Cost $13.19 Unrealized
FRESHPET INC 0.9%
Value $25M Shares 21,347,000 Est. Cost $1.13 Unrealized
CABLE ONE INC 0.9%
Value $24.66M Shares 24,975,000 Est. Cost $0.84 Unrealized
DROPBOX INC 0.9%
Value $24.58M Shares 24,323,000 Est. Cost $0.95 Unrealized
NEXTERA ENERGY INC 0.8%
Value $23.95M Shares 463,345 Est. Cost $49.98 Unrealized
ARES MANAGEMENT CORPORATION 0.8%
Value $23.91M Shares 473,045 Est. Cost $56.05 Unrealized
RIVIAN AUTOMOTIVE INC 0.8%
Value $23.39M Shares 18,581,000 Est. Cost $0.82 Unrealized
GPOR GULFPORT ENERGY CORP 0.8%
Value $22.59M Shares 108,592 Est. Cost $170.19 Unrealized +17.1%
UPSTART HLDGS INC 0.8%
Value $22.05M Shares 25,168,000 Est. Cost $0.88 Unrealized
ALNYLAM PHARMACEUTICALS INC 0.8%
Value $21.85M Shares 14,838,000 Est. Cost $0.98 Unrealized
GREENBRIER COS INC 0.7%
Value $20.52M Shares 19,032,000 Est. Cost $0.94 Unrealized
WELLS FARGO CO NEW 0.6%
Value $17.97M Shares 14,770 Est. Cost $1489.39 Unrealized
LUMENTUM HLDGS INC 0.6%
Value $17.79M Shares 4,796,000 Est. Cost $1.22 Unrealized
VERTEX INC 0.6%
Value $17.22M Shares 18,123,000 Est. Cost $1.20 Unrealized
SYNAPTICS INC 0.6%
Value $17.11M Shares 16,169,000 Est. Cost $1.06 Unrealized
WORKIVA INC 0.6%
Value $16.67M Shares 16,850,000 Est. Cost $0.95 Unrealized
IONIS PHARMACEUTICALS INC 0.6%
Value $16.57M Shares 10,410,000 Est. Cost $1.04 Unrealized
IMPINJ INC 0.6%
Value $16.14M Shares 9,890,000 Est. Cost $1.20 Unrealized
GLOBAL PMTS INC 0.6%
Value $15.85M Shares 17,619,000 Est. Cost $0.95 Unrealized
CHEESECAKE FACTORY INC 0.5%
Value $15.28M Shares 15,451,000 Est. Cost $0.98 Unrealized
JAZZ INVESTMENTS I LTD 0.5%
Value $15.18M Shares 13,087,000 Est. Cost $1.02 Unrealized
BLACKROCK MUNIHLDGS NJ QLTY 0.5%
Value $14.67M Shares 1,232,873 Est. Cost $13.30 Unrealized
TELADOC HEALTH INC 0.5%
Value $14.51M Shares 15,194,000 Est. Cost $1.12 Unrealized
BILL HOLDINGS INC 0.5%
Value $13.93M Shares 15,102,000 Est. Cost $0.92 Unrealized
MGP INGREDIENTS INC NEW 0.5%
Value $13.78M Shares 14,222,000 Est. Cost $1.26 Unrealized
NEUBERGER MUN FD INC 0.4%
Value $12.48M Shares 1,233,578 Est. Cost $10.29 Unrealized
BLACKROCK MUNIHLDGS NY QLTY 0.4%
Value $12.19M Shares 1,191,469 Est. Cost $13.39 Unrealized
RAPID7 INC 0.4%
Value $11.7M Shares 12,790,000 Est. Cost $0.94 Unrealized
BLACKROCK MUNIYIELD N Y QUAL 0.4%
Value $11.64M Shares 1,174,171 Est. Cost $11.54 Unrealized
FIVE9 INC 0.4%
Value $11.56M Shares 12,805,000 Est. Cost $0.86 Unrealized
AEROVIRONMENT INC 0.4%
Value $11.1M Shares 10,210,000 Est. Cost $1.24 Unrealized
BLACKROCK MUNIHLDNGS CALI QL 0.4%
Value $10.4M Shares 981,326 Est. Cost $10.75 Unrealized
XMQTX BLACKROCK MUNIYIELD QUALITY 0.4%
Value $10.14M Shares 1,008,573 Est. Cost $12.87 Unrealized
HAEMONETICS CORP MASS 0.3%
Value $8.405M Shares 8,498,000 Est. Cost $0.83 Unrealized
BLACKROCK MUN INCOME TR 0.3%
Value $8.363M Shares 833,784 Est. Cost $10.08 Unrealized
XMVFX BLACKROCK MUNIVEST FD INC 0.3%
Value $8.263M Shares 1,192,311 Est. Cost $7.10 Unrealized
AMPHASTAR PHARMACEUTICALS IN 0.3%
Value $8.096M Shares 8,733,000 Est. Cost $1.06 Unrealized
BLACKROCK MUNIYIELD MICH QU 0.3%
Value $7.805M Shares 664,819 Est. Cost $14.50 Unrealized
SPECTRUM BRANDS INC 0.3%
Value $7.45M Shares 7,857,000 Est. Cost $0.91 Unrealized
XMYDX BLACKROCK MUNIYIELD FD INC 0.3%
Value $7.315M Shares 697,362 Est. Cost $10.68 Unrealized
LIVE NATION ENTERTAINMENT IN 0.2%
Value $6.959M Shares 4,789,000 Est. Cost $1.20 Unrealized
EXPEDIA GROUP INC 0.2%
Value $6.857M Shares 6,133,000 Est. Cost $1.19 Unrealized
CLOUDFLARE INC 0.2%
Value $6.709M Shares 5,715,000 Est. Cost $1.01 Unrealized
OSI SYSTEMS INC 0.2%
Value $6.706M Shares 4,522,000 Est. Cost $1.45 Unrealized
CONMED CORP 0.2%
Value $6.694M Shares 6,973,000 Est. Cost $1.10 Unrealized
WBD WARNER BROS DISCOVERY INC 0.2%
Value $6.521M Shares 226,250 Est. Cost $13.62 Unrealized +71.6%
NUVEEN NEW YORK AMT QLT MUNI 0.2%
Value $6.469M Shares 641,105 Est. Cost $12.77 Unrealized
WEC ENERGY GROUP INC 0.2%
Value $6.223M Shares 5,334,000 Est. Cost $1.23 Unrealized
GLD SPDR GOLD TR 0.2%
Value $6.078M Shares 15,336 Est. Cost $112.08 Unrealized
SOUTHERN CO 0.2%
Value $5.973M Shares 5,598,000 Est. Cost $1.11 Unrealized
HALOZYME THERAPEUTICS INC 0.2%
Value $5.645M Shares 5,239,000 Est. Cost $1.15 Unrealized
DROPBOX INC 0.2%
Value $5.577M Shares 5,630,000 Est. Cost $0.94 Unrealized
VAIL RESORTS INC 0.2%
Value $5.397M Shares 5,408,000 Est. Cost $1.06 Unrealized
BLACKROCK MUN INCOME QUALITY 0.2%
Value $5.247M Shares 479,613 Est. Cost $10.74 Unrealized
NUTANIX INC 0.2%
Value $5.092M Shares 4,534,000 Est. Cost $1.21 Unrealized
BENTLEY SYS INC 0.2%
Value $4.338M Shares 4,346,000 Est. Cost $0.98 Unrealized
INTEGER HLDGS CORP 0.1%
Value $4.194M Shares 3,726,000 Est. Cost $1.45 Unrealized
OIL STS INTL INC 0.1%
Value $4.15M Shares 4,136,000 Est. Cost $0.81 Unrealized
ABRDN NATL MUN INCOME FD 0.1%
Value $4.125M Shares 401,695 Est. Cost $13.32 Unrealized
NUVEEN MUNICIPAL CREDIT INC 0.1%
Value $4.082M Shares 324,502 Est. Cost $12.32 Unrealized
BLACKROCK MUNIYILD QULT FD I 0.1%
Value $4.044M Shares 357,837 Est. Cost $16.64 Unrealized
BLACKROCK MUNI INCOME TR II 0.1%
Value $3.8M Shares 363,951 Est. Cost $10.37 Unrealized
IONIS PHARMACEUTICALS INC 0.1%
Value $3.792M Shares 2,768,000 Est. Cost $0.95 Unrealized
INVESCO TR INVT GRADE MUNS 0.1%
Value $3.2M Shares 308,543 Est. Cost $10.40 Unrealized
INVESCO MUNICIPAL TRUST 0.1%
Value $3.137M Shares 325,107 Est. Cost $10.15 Unrealized
EATON VANCE MUN BD FD 0.1%
Value $3.102M Shares 318,814 Est. Cost $10.17 Unrealized
NUVEEN PENNSYLVANIA QLT MUN 0.1%
Value $2.725M Shares 229,220 Est. Cost $14.14 Unrealized
XBNYX BLACKROCK N Y MUN INCOME TRU 0.1%
Value $2.216M Shares 218,559 Est. Cost $11.76 Unrealized
INVESCO MUN OPPORTUNITY TR 0.1%
Value $1.965M Shares 205,338 Est. Cost $9.80 Unrealized
MFS MUN INCOME TR 0.1%
Value $1.844M Shares 339,657 Est. Cost $6.77 Unrealized
CWB SPDR SERIES TRUST 0.0%
Value $1.216M Shares 13,633 Est. Cost $89.20 Unrealized
XBKNX BLACKROCK INVT QUALITY MUN T 0.0%
Value $1.031M Shares 92,077 Est. Cost $11.49 Unrealized
INVESCO ADVANTAGE MUN INCOME 0.0%
Value $965K Shares 105,768 Est. Cost $8.88 Unrealized
DWS MUN INCOME TR NEW 0.0%
Value $841K Shares 92,505 Est. Cost $11.01 Unrealized
TPB TURNING PT BRANDS INC 0.0%
Value $737K Shares 6,802 Est. Cost $30.89 Unrealized +216.5%
XMVTX BLACKROCK MUNIVEST FD II INC 0.0%
Value $710K Shares 65,678 Est. Cost $10.57 Unrealized
BLACKLINE INC 0.0%
Value $671K Shares 635,000 Est. Cost $1.07 Unrealized
PPL CAP FDG INC 0.0%
Value $549K Shares 500,000 Est. Cost $0.96 Unrealized
DUKE ENERGY CORP NEW 0.0%
Value $516K Shares 500,000 Est. Cost $1.00 Unrealized
WW WW INTL INC 0.0%
Value $420K Shares 14,371 Est. Cost $34.35 Unrealized -18.6%
SECR NEW YORK LIFE INVTS ACTIVE E 0.0%
Value $287K Shares 11,136 Est. Cost $25.73 Unrealized
INVESCO PA VALUE MUN INC TR 0.0%
Value $151K Shares 14,433 Est. Cost $12.71 Unrealized
CHEGG INC 0.0%
Value $40,208 Shares 45,000 Est. Cost $0.99 Unrealized