MACKAY SHIELDS LLC Diversified Active

Location: New York, NY

CIK: 0000061227 · Show all filings

Period: Q1 2026 (← Previous) (Next →)

Filing Date: Apr 27, 2026

Total Value: $2.728B (22.7% shares, 77.3% debt)

Holdings (111)

LUMENTUM HLDGS INC 5.3%
Value $144M Shares 26,786,000 Est. Cost $0.97 Unrealized
WESTERN DIGITAL CORP 4.1%
Value $111M Shares 15,476,000 Est. Cost $1.32 Unrealized
ADVANCED ENERGY INDS 3.5%
Value $95.38M Shares 39,644,000 Est. Cost $1.05 Unrealized
MIRUM PHARMACEUTICALS INC 2.5%
Value $68.96M Shares 23,054,000 Est. Cost $1.35 Unrealized
QXO INC 2.4%
Value $65.26M Shares 1,170,361 Est. Cost $60.15 Unrealized
LANTHEUS HLDGS INC 2.2%
Value $61.2M Shares 50,898,000 Est. Cost $1.13 Unrealized
MKS INC. 2.2%
Value $60.4M Shares 36,510,000 Est. Cost $0.99 Unrealized
CABLE ONE INC 2.1%
Value $58.37M Shares 77,359,000 Est. Cost $0.79 Unrealized
TETRA TECH INC NEW 2.1%
Value $57.18M Shares 54,518,000 Est. Cost $1.31 Unrealized
UBER TECHNOLOGIES INC 2.0%
Value $54.6M Shares 45,352,000 Est. Cost $1.12 Unrealized
BOEING CO 2.0%
Value $53.89M Shares 829,414 Est. Cost $63.28 Unrealized
ON SEMICONDUCTOR CORP 1.9%
Value $50.6M Shares 39,171,000 Est. Cost $1.19 Unrealized
PG&E CORP 1.8%
Value $48.06M Shares 46,384,000 Est. Cost $1.09 Unrealized
POST HLDGS INC 1.6%
Value $43.62M Shares 40,228,000 Est. Cost $1.03 Unrealized
INTEGER HLDGS CORP 1.6%
Value $43.28M Shares 45,159,000 Est. Cost $0.96 Unrealized
APOLLO GLOBAL MGMT INC 1.5%
Value $41.97M Shares 713,809 Est. Cost $54.97 Unrealized
LIBERTY MEDIA CORP DEL 1.4%
Value $39.26M Shares 33,972,000 Est. Cost $0.99 Unrealized
AKAMAI TECHNOLOGIES INC 1.4%
Value $39.25M Shares 33,819,000 Est. Cost $1.10 Unrealized
HEWLETT PACKARD ENTERPRISE C 1.4%
Value $39.02M Shares 601,856 Est. Cost $54.39 Unrealized
SNOWFLAKE INC 1.4%
Value $38.52M Shares 32,570,000 Est. Cost $1.49 Unrealized
NCL CORP LTD 1.4%
Value $37.98M Shares 38,891,000 Est. Cost $0.93 Unrealized
BRIDGEBIO PHARMA INC 1.4%
Value $37.36M Shares 33,315,000 Est. Cost $0.88 Unrealized
NORTHERN OIL & GAS INC 1.3%
Value $36.61M Shares 33,296,000 Est. Cost $1.16 Unrealized
FRESHPET INC 1.3%
Value $36.58M Shares 31,791,000 Est. Cost $1.13 Unrealized
IRHYTHM HOLDINGS INC 1.3%
Value $35.75M Shares 32,631,000 Est. Cost $1.15 Unrealized
BLACKROCK MUN TARGET TERM TR 1.3%
Value $35.55M Shares 1,566,262 Est. Cost $24.00 Unrealized
CHEFS WHSE INC 1.3%
Value $35.1M Shares 23,749,000 Est. Cost $1.01 Unrealized
IAU ISHARES GOLD TR 1.3%
Value $34.4M Shares 390,150 Est. Cost $33.71 Unrealized
MICROCHIP TECHNOLOGY INC. 1.3%
Value $34.32M Shares 601,047 Est. Cost $52.97 Unrealized
BURLINGTON STORES INC 1.2%
Value $33.73M Shares 20,379,000 Est. Cost $1.41 Unrealized
PATRICK INDS INC 1.2%
Value $33.2M Shares 19,136,000 Est. Cost $0.91 Unrealized
DATADOG INC 1.2%
Value $32.8M Shares 33,802,000 Est. Cost $1.00 Unrealized
FLUOR CORP 1.2%
Value $32.48M Shares 26,312,000 Est. Cost $1.31 Unrealized
LIVE NATION ENTERTAINMENT IN 1.2%
Value $32.12M Shares 29,737,000 Est. Cost $1.05 Unrealized
ETSY INC 1.2%
Value $32M Shares 32,736,000 Est. Cost $1.05 Unrealized
SEAGATE HDD CAYMAN 1.2%
Value $31.54M Shares 6,638,000 Est. Cost $1.44 Unrealized
ORACLE CORP 1.1%
Value $29.72M Shares 646,846 Est. Cost $45.95 Unrealized
DEXCOM INC 1.0%
Value $27.63M Shares 29,970,000 Est. Cost $0.94 Unrealized
MERITAGE HOMES CORP 1.0%
Value $27.2M Shares 28,125,000 Est. Cost $0.97 Unrealized
UNITY SOFTWARE INC 1.0%
Value $26.84M Shares 26,902,000 Est. Cost $1.00 Unrealized
NUTANIX INC 1.0%
Value $26.81M Shares 29,645,000 Est. Cost $0.97 Unrealized
NEXTERA ENERGY INC 1.0%
Value $26.67M Shares 472,936 Est. Cost $50.11 Unrealized
PELOTON INTERACTIVE INC 1.0%
Value $26.01M Shares 19,417,000 Est. Cost $1.34 Unrealized
PARSONS CORP DEL 0.9%
Value $25.78M Shares 26,133,000 Est. Cost $1.01 Unrealized
BIOMARIN PHARMACEUTICAL INC 0.9%
Value $25.56M Shares 26,502,000 Est. Cost $1.02 Unrealized
PROGRESS SOFTWARE CORP 0.9%
Value $25.56M Shares 28,693,000 Est. Cost $1.08 Unrealized
LIBERTY MEDIA CORP DEL 0.9%
Value $25.48M Shares 24,458,000 Est. Cost $1.23 Unrealized
AFFIRM HLDGS INC 0.9%
Value $25.47M Shares 27,150,000 Est. Cost $1.09 Unrealized
NINE NINE ENERGY SERVICE INC 0.9%
Value $25.14M Shares 3,066,434 Est. Cost $8.20 Unrealized
GUIDEWIRE SOFTWARE INC 0.9%
Value $25.1M Shares 25,147,000 Est. Cost $1.10 Unrealized
BANK AMERICA CORP 0.9%
Value $24.88M Shares 20,867 Est. Cost $1416.89 Unrealized
DROPBOX INC 0.8%
Value $23.12M Shares 24,323,000 Est. Cost $0.95 Unrealized
BLACKROCK MUNIYIELD N Y QUAL 0.8%
Value $22.56M Shares 2,349,687 Est. Cost $10.57 Unrealized
BLACKROCK MUNIHOLDINGS FD IN 0.8%
Value $22.36M Shares 1,982,355 Est. Cost $13.19 Unrealized
GREENBRIER COS INC 0.8%
Value $22.05M Shares 19,032,000 Est. Cost $0.94 Unrealized
TALO TALOS ENERGY INC 0.8%
Value $20.95M Shares 1,329,097 Est. Cost $32.68 Unrealized -63.5%
GPOR GULFPORT ENERGY CORP 0.8%
Value $20.86M Shares 98,592 Est. Cost $170.19 Unrealized +14.4%
RIVIAN AUTOMOTIVE INC 0.7%
Value $19.94M Shares 18,587,000 Est. Cost $0.82 Unrealized
ALNYLAM PHARMACEUTICALS INC 0.7%
Value $19.05M Shares 14,844,000 Est. Cost $0.98 Unrealized
SHIFT4 PMTS INC 0.7%
Value $18.38M Shares 19,532,000 Est. Cost $1.08 Unrealized
UPSTART HLDGS INC 0.7%
Value $17.93M Shares 25,168,000 Est. Cost $0.88 Unrealized
ARES MANAGEMENT CORPORATION 0.7%
Value $17.81M Shares 480,034 Est. Cost $55.78 Unrealized
BLACKROCK MUNIYILD QULT FD I 0.6%
Value $17.5M Shares 1,594,019 Est. Cost $12.25 Unrealized
WELLS FARGO & CO 0.6%
Value $17.13M Shares 14,760 Est. Cost $1489.39 Unrealized
SYNAPTICS INC 0.6%
Value $16.76M Shares 16,169,000 Est. Cost $1.06 Unrealized
JAZZ INVESTMENTS I LTD 0.6%
Value $15.91M Shares 13,087,000 Est. Cost $1.02 Unrealized
WORKIVA INC 0.6%
Value $15.82M Shares 16,850,000 Est. Cost $0.95 Unrealized
IONIS PHARMACEUTICALS INC 0.6%
Value $15.71M Shares 10,410,000 Est. Cost $1.04 Unrealized
LUMENTUM HLDGS INC 0.6%
Value $15.55M Shares 2,200,000 Est. Cost $1.22 Unrealized
CHEESECAKE FACTORY INC 0.6%
Value $15.18M Shares 15,388,000 Est. Cost $0.98 Unrealized
MGP INGREDIENTS INC NEW 0.5%
Value $13.76M Shares 14,287,000 Est. Cost $1.26 Unrealized
BILL HOLDINGS INC 0.5%
Value $13.47M Shares 15,102,000 Est. Cost $0.92 Unrealized
BLACKROCK MUNIHLDGS NJ QLTY 0.5%
Value $13.28M Shares 1,147,932 Est. Cost $13.30 Unrealized
Q2 HLDGS INC 0.5%
Value $13.23M Shares 13,281,000 Est. Cost $1.18 Unrealized
AEROVIRONMENT INC 0.5%
Value $12.96M Shares 13,220,000 Est. Cost $1.18 Unrealized
GLOBAL PMTS INC 0.4%
Value $11.37M Shares 12,879,000 Est. Cost $0.95 Unrealized
VERTEX INC 0.3%
Value $7.996M Shares 9,185,000 Est. Cost $1.20 Unrealized
SPECTRUM BRANDS INC 0.3%
Value $7.861M Shares 7,857,000 Est. Cost $0.91 Unrealized
BLACKROCK MUNIYIELD MICH QU 0.3%
Value $7.829M Shares 658,969 Est. Cost $14.50 Unrealized
TELADOC HEALTH INC 0.3%
Value $7.197M Shares 7,505,000 Est. Cost $1.12 Unrealized
LIVE NATION ENTERTAINMENT IN 0.3%
Value $7.179M Shares 4,726,000 Est. Cost $1.20 Unrealized
OSI SYSTEMS INC 0.3%
Value $6.93M Shares 4,525,000 Est. Cost $1.45 Unrealized
CLOUDFLARE INC 0.2%
Value $6.649M Shares 5,680,000 Est. Cost $1.01 Unrealized
GLD SPDR GOLD TR 0.2%
Value $6.599M Shares 15,336 Est. Cost $112.08 Unrealized
WEC ENERGY GROUP INC 0.2%
Value $6.514M Shares 5,266,000 Est. Cost $1.23 Unrealized
NEUBERGER MUN FD INC 0.2%
Value $6.326M Shares 623,277 Est. Cost $10.29 Unrealized
SOUTHERN CO 0.2%
Value $6.265M Shares 5,640,000 Est. Cost $1.11 Unrealized
WBD WARNER BROS DISCOVERY INC 0.2%
Value $6.213M Shares 226,250 Est. Cost $13.62 Unrealized +107.3%
HALOZYME THERAPEUTICS INC 0.2%
Value $5.616M Shares 5,416,000 Est. Cost $1.14 Unrealized
BLACKROCK MUNIYIELD QUALITY 0.2%
Value $5.531M Shares 526,256 Est. Cost $10.51 Unrealized
FIVE9 INC 0.2%
Value $5.466M Shares 6,265,000 Est. Cost $0.86 Unrealized
NUVEEN NY AMT FREE 0.2%
Value $5.308M Shares 519,880 Est. Cost $12.77 Unrealized
NUTANIX INC 0.2%
Value $4.689M Shares 4,604,000 Est. Cost $1.21 Unrealized
INTEGER HLDGS CORP 0.2%
Value $4.541M Shares 3,845,000 Est. Cost $1.44 Unrealized
ABRDN NATL MUN INCOME FD 0.1%
Value $4.001M Shares 401,695 Est. Cost $13.32 Unrealized
ARROWHEAD PHARMACEUTICALS IN 0.1%
Value $3.111M Shares 3,000,000 Est. Cost $1.04 Unrealized
INVESCO TR INVT GRADE MUNS 0.1%
Value $2.064M Shares 209,167 Est. Cost $10.40 Unrealized
INVESCO MUNICIPAL TRUST 0.1%
Value $1.988M Shares 208,814 Est. Cost $10.15 Unrealized
MFS MUN INCOME TR 0.1%
Value $1.796M Shares 333,155 Est. Cost $6.77 Unrealized
BLACKROCK MUNIHLDNGS CALI 0.1%
Value $1.527M Shares 146,840 Est. Cost $10.75 Unrealized
NUVEEN PA INVT QUALITY MUN F 0.1%
Value $1.407M Shares 117,934 Est. Cost $14.14 Unrealized
EATON VANCE MUN BD FD 0.0%
Value $1.229M Shares 125,764 Est. Cost $10.17 Unrealized
INVESCO MUN OPPORTUNIT TR 0.0%
Value $1.201M Shares 126,255 Est. Cost $9.80 Unrealized
NUVEEN MUN CR INCOME FD 0.0%
Value $678K Shares 55,659 Est. Cost $12.32 Unrealized
BLACKLINE INC 0.0%
Value $598K Shares 635,000 Est. Cost $1.07 Unrealized
PPL CAP FDG INC 0.0%
Value $586K Shares 500,000 Est. Cost $0.96 Unrealized
DUKE ENERGY CORP NEW 0.0%
Value $552K Shares 500,000 Est. Cost $1.00 Unrealized
INVESCO ADVANTAGE MUN INCOME 0.0%
Value $392K Shares 45,320 Est. Cost $8.88 Unrealized
SECR NEW YORK LIFE INVTS ACTIVE E 0.0%
Value $295K Shares 11,504 Est. Cost $25.73 Unrealized
WW WW INTL INC 0.0%
Value $197K Shares 14,371 Est. Cost $34.35 Unrealized -29.7%
CHEGG INC 0.0%
Value $43,425 Shares 45,000 Est. Cost $0.99 Unrealized