MACKAY SHIELDS LLC Diversified Active

Location: New York, NY

CIK: 0000061227 · Show all filings

Period: Q3 2025 (← Previous) (Next →)

Filing Date: Oct 27, 2025

Total Value: $2.94B (25.2% shares, 74.8% debt)

Holdings (136)

— SEAGATE HDD CAYMAN 2.5%
Value $73.68M Shares 25,568,000 Share Price $2.88 Est. Cost/Share $1.44 Unrealized @ Report Date —
— QXO INC 2.2%
Value $65.49M Shares 1,186,085 Share Price $55.22 Est. Cost/Share $60.15 Unrealized @ Report Date —
— TETRA TECH INC NEW 2.2%
Value $63.49M Shares 58,598,000 Share Price $1.08 Est. Cost/Share $1.31 Unrealized @ Report Date —
— UBER TECHNOLOGIES INC 2.2%
Value $63.29M Shares 42,991,000 Share Price $1.47 Est. Cost/Share $1.12 Unrealized @ Report Date —
— MIRUM PHARMACEUTICALS INC 2.1%
Value $63.09M Shares 26,219,000 Share Price $2.41 Est. Cost/Share $1.35 Unrealized @ Report Date —
— ADVANCED ENERGY INDS 2.1%
Value $62.74M Shares 45,174,000 Share Price $1.39 Est. Cost/Share $1.05 Unrealized @ Report Date —
— WESTERN DIGITAL CORP 2.1%
Value $61.71M Shares 19,228,000 Share Price $3.21 Est. Cost/Share $1.32 Unrealized @ Report Date —
— PG&E CORP 2.1%
Value $61.26M Shares 60,439,000 Share Price $1.01 Est. Cost/Share $1.09 Unrealized @ Report Date —
— LANTHEUS HLDGS INC 2.0%
Value $58.68M Shares 55,673,000 Share Price $1.05 Est. Cost/Share $1.13 Unrealized @ Report Date —
— BOEING CO 2.0%
Value $58.55M Shares 841,981 Share Price $69.54 Est. Cost/Share $63.28 Unrealized @ Report Date —
— HALOZYME THERAPEUTICS INC 2.0%
Value $57.99M Shares 50,503,000 Share Price $1.15 Est. Cost/Share $1.15 Unrealized @ Report Date —
— CABLE ONE INC 2.0%
Value $57.71M Shares 67,424,000 Share Price $0.86 Est. Cost/Share $0.79 Unrealized @ Report Date —
— POST HLDGS INC 1.9%
Value $56.35M Shares 50,121,000 Share Price $1.12 Est. Cost/Share $1.03 Unrealized @ Report Date —
— NUTANIX INC 1.9%
Value $56.05M Shares 40,670,000 Share Price $1.38 Est. Cost/Share $1.21 Unrealized @ Report Date —
— APOLLO GLOBAL MGMT INC 1.7%
Value $50.99M Shares 721,847 Share Price $70.64 Est. Cost/Share $54.97 Unrealized @ Report Date —
— OSI SYSTEMS INC 1.6%
Value $47.27M Shares 32,536,000 Share Price $1.45 Est. Cost/Share $1.45 Unrealized @ Report Date —
— LIBERTY MEDIA CORP DEL 1.6%
Value $45.73M Shares 34,433,000 Share Price $1.33 Est. Cost/Share $0.99 Unrealized @ Report Date —
— ON SEMICONDUCTOR CORP 1.6%
Value $45.58M Shares 39,979,000 Share Price $1.14 Est. Cost/Share $1.19 Unrealized @ Report Date —
— IRHYTHM TECHNOLOGIES INC 1.4%
Value $42.49M Shares 30,856,000 Share Price $1.38 Est. Cost/Share $1.14 Unrealized @ Report Date —
— LUMENTUM HLDGS INC 1.4%
Value $42.47M Shares 30,445,000 Share Price $1.40 Est. Cost/Share $0.97 Unrealized @ Report Date —
— AKAMAI TECHNOLOGIES INC 1.4%
Value $41.65M Shares 43,444,000 Share Price $0.96 Est. Cost/Share $1.10 Unrealized @ Report Date —
— HEWLETT PACKARD ENTERPRISE C 1.4%
Value $41.25M Shares 605,178 Share Price $68.16 Est. Cost/Share $54.39 Unrealized @ Report Date —
— MKS INC. 1.4%
Value $40.8M Shares 37,185,000 Share Price $1.10 Est. Cost/Share $0.99 Unrealized @ Report Date —
— NCL CORP LTD 1.4%
Value $40.33M Shares 39,311,000 Share Price $1.03 Est. Cost/Share $0.93 Unrealized @ Report Date —
— SNOWFLAKE INC 1.4%
Value $40.09M Shares 26,382,000 Share Price $1.52 Est. Cost/Share $1.52 Unrealized @ Report Date —
— SHIFT4 PMTS INC 1.3%
Value $39.36M Shares 39,897,000 Share Price $0.99 Est. Cost/Share $1.08 Unrealized @ Report Date —
— ETSY INC 1.3%
Value $38.96M Shares 37,493,000 Share Price $1.04 Est. Cost/Share $1.05 Unrealized @ Report Date —
— IONIS PHARMACEUTICALS INC 1.3%
Value $38.51M Shares 27,793,000 Share Price $1.39 Est. Cost/Share $1.04 Unrealized @ Report Date —
IAU ISHARES GOLD TR 1.3%
Value $38.2M Shares 525,000 Share Price $72.77 Est. Cost/Share $34.57 Unrealized @ Report Date +110.5%
— MERITAGE HOMES CORP 1.3%
Value $38.05M Shares 37,024,000 Share Price $1.03 Est. Cost/Share $0.97 Unrealized @ Report Date —
— PATRICK INDS INC 1.3%
Value $37.95M Shares 23,353,000 Share Price $1.63 Est. Cost/Share $0.91 Unrealized @ Report Date —
— MICROCHIP TECHNOLOGY INC. 1.2%
Value $36.04M Shares 609,163 Share Price $59.16 Est. Cost/Share $52.97 Unrealized @ Report Date —
— CHEFS WHSE INC 1.2%
Value $34.87M Shares 24,100,000 Share Price $1.45 Est. Cost/Share $1.01 Unrealized @ Report Date —
— DEXCOM INC 1.2%
Value $34.03M Shares 37,290,000 Share Price $0.91 Est. Cost/Share $0.94 Unrealized @ Report Date —
— TYLER TEX INDPT SCH DIST 1.1%
Value $33.68M Shares 30,621,000 Share Price $1.10 Est. Cost/Share $1.23 Unrealized @ Report Date —
— BIOMARIN PHARMACEUTICAL INC 1.1%
Value $33.45M Shares 35,206,000 Share Price $0.95 Est. Cost/Share $1.02 Unrealized @ Report Date —
— NORTHERN OIL & GAS INC 1.1%
Value $32.19M Shares 32,032,000 Share Price $1.00 Est. Cost/Share $1.17 Unrealized @ Report Date —
— BLACKROCK MUN TARGET TERM TR 1.1%
Value $31.89M Shares 1,419,894 Share Price $22.46 Est. Cost/Share $24.19 Unrealized @ Report Date —
— FLUOR CORP 1.1%
Value $31.77M Shares 26,730,000 Share Price $1.19 Est. Cost/Share $1.31 Unrealized @ Report Date —
— FORD MTR CO 1.1%
Value $31.26M Shares 30,776,000 Share Price $1.02 Est. Cost/Share $1.15 Unrealized @ Report Date —
— LIBERTY MEDIA CORP DEL 1.1%
Value $31.18M Shares 29,835,000 Share Price $1.04 Est. Cost/Share $1.23 Unrealized @ Report Date —
— PARSONS CORP DEL 1.0%
Value $30.21M Shares 26,441,000 Share Price $1.14 Est. Cost/Share $1.01 Unrealized @ Report Date —
TALO TALOS ENERGY INC 1.0%
Value $29.71M Shares 3,098,435 Share Price $9.59 Est. Cost/Share $32.68 Unrealized @ Report Date -70.7%
— PROGRESS SOFTWARE CORP 1.0%
Value $29.19M Shares 28,964,000 Share Price $1.01 Est. Cost/Share $1.08 Unrealized @ Report Date —
— BRIDGEBIO PHARMA INC 1.0%
Value $28.58M Shares 28,922,000 Share Price $0.99 Est. Cost/Share $0.84 Unrealized @ Report Date —
— BURLINGTON STORES INC 0.9%
Value $27.79M Shares 20,561,000 Share Price $1.35 Est. Cost/Share $1.41 Unrealized @ Report Date —
— Q2 HLDGS INC 0.9%
Value $26.85M Shares 25,829,000 Share Price $1.04 Est. Cost/Share $1.18 Unrealized @ Report Date —
— DROPBOX INC 0.9%
Value $25.46M Shares 24,613,000 Share Price $1.03 Est. Cost/Share $0.95 Unrealized @ Report Date —
— BLACKROCK MUNIHOLDINGS FD IN 0.9%
Value $25.45M Shares 2,166,270 Share Price $11.75 Est. Cost/Share $13.19 Unrealized @ Report Date —
— ALNYLAM PHARMACEUTICALS INC 0.9%
Value $24.99M Shares 15,188,000 Share Price $1.65 Est. Cost/Share $0.98 Unrealized @ Report Date —
— CABLE ONE INC 0.8%
Value $24.39M Shares 24,975,000 Share Price $0.98 Est. Cost/Share $0.84 Unrealized @ Report Date —
— GLOBAL PMTS INC 0.8%
Value $24.37M Shares 26,553,000 Share Price $0.92 Est. Cost/Share $0.95 Unrealized @ Report Date —
— FRESHPET INC 0.8%
Value $24.29M Shares 21,572,000 Share Price $1.13 Est. Cost/Share $1.13 Unrealized @ Report Date —
— ARES MANAGEMENT CORPORATION 0.8%
Value $24.05M Shares 480,905 Share Price $50.00 Est. Cost/Share $56.05 Unrealized @ Report Date —
GPOR GULFPORT ENERGY CORP 0.8%
Value $23.7M Shares 130,956 Share Price $180.98 Est. Cost/Share $170.19 Unrealized @ Report Date +6.3%
— NEXTERA ENERGY INC 0.8%
Value $23.27M Shares 465,471 Share Price $49.98 Est. Cost/Share $49.98 Unrealized @ Report Date —
— BANK AMERICA CORP 0.8%
Value $22.55M Shares 17,584 Share Price $1282.25 Est. Cost/Share $1448.22 Unrealized @ Report Date —
— LUMENTUM HLDGS INC 0.7%
Value $21.89M Shares 9,060,000 Share Price $2.42 Est. Cost/Share $1.54 Unrealized @ Report Date —
— OIL STS INTL INC 0.7%
Value $21.34M Shares 21,321,000 Share Price $1.00 Est. Cost/Share $0.81 Unrealized @ Report Date —
— GREENBRIER COS INC 0.7%
Value $20.63M Shares 19,205,000 Share Price $1.07 Est. Cost/Share $0.94 Unrealized @ Report Date —
— NUVEEN AMT FREE QLTY MUN INC 0.7%
Value $20.52M Shares 1,801,320 Share Price $11.39 Est. Cost/Share $12.14 Unrealized @ Report Date —
— RIVIAN AUTOMOTIVE INC 0.7%
Value $19.48M Shares 18,765,000 Share Price $1.04 Est. Cost/Share $0.82 Unrealized @ Report Date —
— WELLS FARGO CO NEW 0.6%
Value $19.08M Shares 15,404 Share Price $1238.83 Est. Cost/Share $1489.39 Unrealized @ Report Date —
— VERTEX INC 0.6%
Value $18.69M Shares 18,323,000 Share Price $1.02 Est. Cost/Share $1.20 Unrealized @ Report Date —
— NUVEEN MUNICIPAL CREDIT INC 0.6%
Value $17.66M Shares 1,406,423 Share Price $12.56 Est. Cost/Share $12.32 Unrealized @ Report Date —
— WORKIVA INC 0.6%
Value $16.88M Shares 17,070,000 Share Price $0.99 Est. Cost/Share $0.95 Unrealized @ Report Date —
— IMPINJ INC 0.6%
Value $16.68M Shares 9,965,000 Share Price $1.67 Est. Cost/Share $1.20 Unrealized @ Report Date —
— CHEESECAKE FACTORY INC 0.5%
Value $15.74M Shares 15,810,000 Share Price $1.00 Est. Cost/Share $0.98 Unrealized @ Report Date —
— CONMED CORP 0.5%
Value $14.68M Shares 15,399,000 Share Price $0.95 Est. Cost/Share $1.10 Unrealized @ Report Date —
— TELADOC HEALTH INC 0.5%
Value $14.38M Shares 15,313,000 Share Price $0.94 Est. Cost/Share $1.12 Unrealized @ Report Date —
— NUVEEN AMT FREE MUN CR INC F 0.5%
Value $14.32M Shares 1,165,469 Share Price $12.29 Est. Cost/Share $12.44 Unrealized @ Report Date —
— BLACKROCK MUNIHLDGS NJ QLTY 0.5%
Value $14.29M Shares 1,232,873 Share Price $11.59 Est. Cost/Share $13.30 Unrealized @ Report Date —
— JAZZ INVESTMENTS I LTD 0.5%
Value $14.24M Shares 13,366,000 Share Price $1.07 Est. Cost/Share $1.02 Unrealized @ Report Date —
— MGP INGREDIENTS INC NEW 0.5%
Value $14.03M Shares 14,660,000 Share Price $0.96 Est. Cost/Share $1.26 Unrealized @ Report Date —
— NEUBERGER BERMAN MUN FD INC 0.4%
Value $12.73M Shares 1,233,578 Share Price $10.32 Est. Cost/Share $10.29 Unrealized @ Report Date —
— AEROVIRONMENT INC 0.4%
Value $12.52M Shares 10,088,000 Share Price $1.24 Est. Cost/Share $1.24 Unrealized @ Report Date —
— NUVEEN QUALITY MUNCP INCOME 0.4%
Value $12.37M Shares 1,058,093 Share Price $11.69 Est. Cost/Share $11.71 Unrealized @ Report Date —
— BLACKROCK MUNIHLDGS NY QLTY 0.4%
Value $12.18M Shares 1,191,469 Share Price $10.22 Est. Cost/Share $13.39 Unrealized @ Report Date —
— FIVE9 INC 0.4%
Value $11.86M Shares 13,345,000 Share Price $0.89 Est. Cost/Share $0.86 Unrealized @ Report Date —
— BLACKROCK MUNIYIELD N Y QUAL 0.4%
Value $11.66M Shares 1,174,171 Share Price $9.93 Est. Cost/Share $11.54 Unrealized @ Report Date —
— RAPID7 INC 0.4%
Value $11.46M Shares 12,905,000 Share Price $0.89 Est. Cost/Share $0.94 Unrealized @ Report Date —
— BLACKROCK MUNIHLDNGS CALI QL 0.4%
Value $10.65M Shares 981,326 Share Price $10.85 Est. Cost/Share $10.75 Unrealized @ Report Date —
— AMPHASTAR PHARMACEUTICALS IN 0.4%
Value $10.57M Shares 11,610,000 Share Price $0.91 Est. Cost/Share $1.06 Unrealized @ Report Date —
XMQTX BLACKROCK MUNIYIELD QUALITY 0.4%
Value $10.3M Shares 1,026,805 Share Price $10.03 Est. Cost/Share $12.87 Unrealized @ Report Date —
— HAEMONETICS CORP MASS 0.3%
Value $8.763M Shares 8,949,000 Share Price $0.98 Est. Cost/Share $0.83 Unrealized @ Report Date —
XMVFX BLACKROCK MUNIVEST FD INC 0.3%
Value $8.396M Shares 1,223,865 Share Price $6.86 Est. Cost/Share $7.10 Unrealized @ Report Date —
— BLACKROCK MUN INCOME TR 0.3%
Value $8.38M Shares 833,784 Share Price $10.05 Est. Cost/Share $10.08 Unrealized @ Report Date —
— LUMENTUM HLDGS INC 0.3%
Value $8.259M Shares 4,909,000 Share Price $1.68 Est. Cost/Share $1.22 Unrealized @ Report Date —
— NUVEEN NEW YORK AMT QLT MUNI 0.3%
Value $8.136M Shares 797,635 Share Price $10.20 Est. Cost/Share $12.77 Unrealized @ Report Date —
— LIVE NATION ENTERTAINMENT IN 0.3%
Value $7.88M Shares 4,885,000 Share Price $1.61 Est. Cost/Share $1.20 Unrealized @ Report Date —
WBD WARNER BROS DISCOVERY INC 0.3%
Value $7.812M Shares 400,000 Share Price $19.53 Est. Cost/Share $13.62 Unrealized @ Report Date +43.4%
— SPECTRUM BRANDS INC 0.3%
Value $7.573M Shares 8,128,000 Share Price $0.93 Est. Cost/Share $0.91 Unrealized @ Report Date —
XMYDX BLACKROCK MUNIYIELD FD INC 0.3%
Value $7.52M Shares 712,123 Share Price $10.56 Est. Cost/Share $10.68 Unrealized @ Report Date —
— BLACKROCK MUNIYIELD MICH QU 0.3%
Value $7.499M Shares 664,819 Share Price $11.28 Est. Cost/Share $14.50 Unrealized @ Report Date —
— CLOUDFLARE INC 0.2%
Value $7.245M Shares 5,816,000 Share Price $1.25 Est. Cost/Share $1.01 Unrealized @ Report Date —
— WEC ENERGY GROUP INC 0.2%
Value $6.756M Shares 5,508,000 Share Price $1.23 Est. Cost/Share $1.23 Unrealized @ Report Date —
— SOUTHERN CO 0.2%
Value $6.376M Shares 5,736,000 Share Price $1.11 Est. Cost/Share $1.11 Unrealized @ Report Date —
— EXPEDIA GROUP INC 0.2%
Value $6.242M Shares 6,183,000 Share Price $1.01 Est. Cost/Share $1.19 Unrealized @ Report Date —
— NUVEEN CA QUALTY MUN INCOME 0.2%
Value $5.88M Shares 511,343 Share Price $11.50 Est. Cost/Share $11.44 Unrealized @ Report Date —
— VAIL RESORTS INC 0.2%
Value $5.678M Shares 5,759,000 Share Price $0.99 Est. Cost/Share $1.06 Unrealized @ Report Date —
— DROPBOX INC 0.2%
Value $5.636M Shares 5,713,000 Share Price $0.99 Est. Cost/Share $0.94 Unrealized @ Report Date —
GLD SPDR GOLD TR 0.2%
Value $5.451M Shares 15,336 Share Price $355.47 Est. Cost/Share $114.62 Unrealized @ Report Date +210.1%
— BLACKROCK MUN INCOME QUALITY 0.2%
Value $5.252M Shares 479,613 Share Price $10.95 Est. Cost/Share $10.74 Unrealized @ Report Date —
— INTEGER HLDGS CORP 0.2%
Value $5.163M Shares 3,961,000 Share Price $1.30 Est. Cost/Share $1.45 Unrealized @ Report Date —
— SHIFT4 PMTS INC 0.2%
Value $4.903M Shares 4,779,000 Share Price $1.03 Est. Cost/Share $1.15 Unrealized @ Report Date —
— PEBBLEBROOK HOTEL TR 0.2%
Value $4.852M Shares 4,923,000 Share Price $0.99 Est. Cost/Share $1.17 Unrealized @ Report Date —
— BENTLEY SYS INC 0.2%
Value $4.605M Shares 4,661,000 Share Price $0.99 Est. Cost/Share $0.98 Unrealized @ Report Date —
VOD VODAFONE GROUP PLC NEW 0.1%
Value $4.305M Shares 371,152 Share Price $11.60 Est. Cost/Share $8.69 Unrealized @ Report Date +33.5%
— BLACKROCK MUNIYILD QULT FD I 0.1%
Value $4.169M Shares 357,837 Share Price $11.65 Est. Cost/Share $16.64 Unrealized @ Report Date —
XENWX EATON VANCE NEW YORK MUN BD 0.1%
Value $4.161M Shares 421,971 Share Price $9.86 Est. Cost/Share $14.03 Unrealized @ Report Date —
— ABRDN NATL MUN INCOME FD 0.1%
Value $4.121M Shares 401,695 Share Price $10.26 Est. Cost/Share $13.32 Unrealized @ Report Date —
— BLACKROCK MUNI INCOME TR II 0.1%
Value $3.803M Shares 363,951 Share Price $10.45 Est. Cost/Share $10.37 Unrealized @ Report Date —
— INVESCO TR INVT GRADE MUNS 0.1%
Value $3.746M Shares 370,162 Share Price $10.12 Est. Cost/Share $10.40 Unrealized @ Report Date —
— EXACT SCIENCES CORP 0.1%
Value $3.726M Shares 4,034,000 Share Price $0.92 Est. Cost/Share $1.17 Unrealized @ Report Date —
— INVESCO ADVANTAGE MUN INCOME 0.1%
Value $3.552M Shares 404,961 Share Price $8.77 Est. Cost/Share $8.88 Unrealized @ Report Date —
— IONIS PHARMACEUTICALS INC 0.1%
Value $3.455M Shares 2,816,000 Share Price $1.23 Est. Cost/Share $0.95 Unrealized @ Report Date —
— EATON VANCE MUN BD FD 0.1%
Value $3.169M Shares 318,814 Share Price $9.94 Est. Cost/Share $10.17 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 —
— INVESCO MUN OPPORTUNITY TR 0.1%
Value $2.976M Shares 307,705 Share Price $9.67 Est. Cost/Share $9.80 Unrealized @ Report Date —
— NUVEEN PENNSYLVANIA QLT MUN 0.1%
Value $2.8M Shares 233,310 Share Price $12.00 Est. Cost/Share $14.14 Unrealized @ Report Date —
— MFS MUN INCOME TR 0.1%
Value $2.335M Shares 433,155 Share Price $5.39 Est. Cost/Share $6.77 Unrealized @ Report Date —
XBNYX BLACKROCK N Y MUN INCOME TRU 0.1%
Value $2.212M Shares 218,559 Share Price $10.12 Est. Cost/Share $11.76 Unrealized @ Report Date —
— DWS MUN INCOME TR NEW 0.0%
Value $1.2M Shares 130,807 Share Price $9.17 Est. Cost/Share $11.01 Unrealized @ Report Date —
XBKNX BLACKROCK INVT QUALITY MUN T 0.0%
Value $1.044M Shares 92,077 Share Price $11.34 Est. Cost/Share $11.49 Unrealized @ Report Date —
— BLACKLINE INC 0.0%
Value $1.041M Shares 1,000,000 Share Price $1.04 Est. Cost/Share $1.07 Unrealized @ Report Date —
— INVESCO QUALITY MUN INCOME T 0.0%
Value $936K Shares 94,994 Share Price $9.85 Est. Cost/Share $9.92 Unrealized @ Report Date —
— SOUTHERN CO 0.0%
Value $738K Shares 655,000 Share Price $1.13 Est. Cost/Share $1.00 Unrealized @ Report Date —
XMVTX BLACKROCK MUNIVEST FD II INC 0.0%
Value $698K Shares 65,678 Share Price $10.63 Est. Cost/Share $10.57 Unrealized @ Report Date —
TPB TURNING PT BRANDS INC 0.0%
Value $672K Shares 6,802 Share Price $98.86 Est. Cost/Share $30.89 Unrealized @ Report Date +220.0%
— PPL CAP FDG INC 0.0%
Value $575K Shares 503,000 Share Price $1.14 Est. Cost/Share $0.96 Unrealized @ Report Date —
— DUKE ENERGY CORP NEW 0.0%
Value $543K Shares 505,000 Share Price $1.07 Est. Cost/Share $1.00 Unrealized @ Report Date —
WW WW INTL INC 0.0%
Value $393K Shares 14,371 Share Price $27.36 Est. Cost/Share $34.35 Unrealized @ Report Date -20.3%
— INVESCO PA VALUE MUN INC TR 0.0%
Value $149K Shares 14,433 Share Price $10.33 Est. Cost/Share $12.71 Unrealized @ Report Date —
— BILL HOLDINGS INC 0.0%
Value $73,792 Shares 75,000 Share Price $0.98 Est. Cost/Share $1.71 Unrealized @ Report Date —
NINEQ NINE ENERGY SERVICE INC 0.0%
Value $73,517 Shares 116,342 Share Price $0.63 * Est. Cost/Share $10.34 Unrealized @ Report Date -93.1%
— CHEGG INC 0.0%
Value $35,438 Shares 45,000 Share Price $0.79 Est. Cost/Share $0.99 Unrealized @ Report Date —