MACKAY SHIELDS LLC Q1 2025 Filing

Filed April 29, 2025

Portfolio Value

$3.1T

Holdings

144

Report Date

Q1 2025

Filing Type

13F-HR

All Holdings (144 positions)

#StockSharesValue% PortfolioType
1
LNTH 2.625 12/15/27LANTHEUS HLDGS INC
56,019,000$79.2B2.55%
2
NRG 2.75 06/01/48NRG ENERGY INC
33,232,000$77.4B2.49%
3
POST 2.5 08/15/27POST HLDGS INC
58,749,000$70.2B2.26%
4
TTEK 2.25 08/15/28TETRA TECH INC NEW
64,710,000$66.9B2.15%
560,916,000$64.5B2.07%
658,959,000$57.6B1.85%
7
HALO 1 08/15/28HALOZYME THERAPEUTICS INC
43,853,000$56.2B1.81%
841,012,000$54.7B1.76%
9
APO 6.75 07/31/26APOLLO GLOBAL MGMT INC
728,825$53.6B1.72%
10
UBER 0.875 12/01/28 2028UBER TECHNOLOGIES INC
43,373,000$53.0B1.70%
11
BMRN 1.25 05/15/27BIOMARIN PHARMACEUTICAL INC
54,930,000$51.8B1.67%
12
NEE 6.926 09/01/25NEXTERA ENERGY INC
1,212,815$49.6B1.59%
13
ON 0.5 03/01/29ON SEMICONDUCTOR CORP
56,011,000$48.4B1.56%
14
CHEF 2.375 12/15/28CHEFS WHSE INC
34,785,000$48.4B1.56%
15
F 0 03/15/26FORD MTR CO
48,041,000$47.1B1.52%
16
AEIS 2.5 09/15/28ADVANCED ENERGY INDS
45,624,000$46.8B1.51%
17
MIRM 4 05/01/29MIRUM PHARMACEUTICALS INC
27,958,000$45.5B1.46%
18
XNEAXNUVEEN AMT FREE QLTY MUN INC
4,002,639$44.8B1.44%
1945,148,000$43.9B1.41%
20
AKAM 0.375 09/01/27AKAMAI TECHNOLOGIES INC
44,185,000$43.2B1.39%
21
CABO 1.125 03/15/28CABLE ONE INC
53,680,000$42.7B1.37%
22
FWONK 2.25 08/15/27LIBERTY MEDIA CORP DEL
34,813,000$42.4B1.36%
23
PATK 1.75 12/01/28PATRICK INDS INC
29,561,000$41.4B1.33%
24
FOUR 0.5 08/01/27SHIFT4 PMTS INC
40,000,000$40.6B1.31%
25
IAU*ISHARES GOLD TR
660,000$38.9B1.25%
26
TYL 0.25 03/15/26TYLER TEX INDPT SCH DIST
31,006,000$37.9B1.22%
27
NET 0 08/15/26CLOUDFLARE INC
37,498,000$37.7B1.21%
28
BAC 7.25 PERP LBANK AMERICA CORP
29,951$37.1B1.19%
29
BA 6 10/15/27BOEING CO
622,080$36.9B1.19%
30
NZFNUVEEN MUNICIPAL CREDIT INC
2,979,590$36.4B1.17%
31
STX 3.5 06/01/28SEAGATE HDD CAYMAN
30,140,000$36.3B1.17%
3237,718,000$36.3B1.17%
33
PR 3.25 04/01/28PERMIAN RESOURCES CORP
14,774,000$36.0B1.16%
34
NOG 3.625 04/15/29NORTHERN OIL & GAS INC
32,356,000$34.2B1.10%
35
LUV 1.25 05/01/25SOUTHWEST AIRLS CO
33,931,000$33.9B1.09%
36
WFC 7.5 PERP LWELLS FARGO CO NEW
28,119$33.9B1.09%
37
BTTBLACKROCK MUN TARGET TERM TR
1,563,907$33.2B1.07%
3824,294,000$32.2B1.04%
3933,812,000$31.8B1.02%
40
SIRI 3.75 03/15/28LIBERTY MEDIA CORP DEL
29,835,000$31.0B1.00%
41
OIS 4.75 04/01/26OIL STS INTL INC
31,321,000$30.7B0.99%
42
TALOTALOS ENERGY INC
3,132,176$30.4B0.98%
43
NVGNUVEEN AMT FREE MUN CR INC F
2,423,683$30.0B0.96%
44
IONS 1.75 06/15/28IONIS PHARMACEUTICALS INC
30,793,000$29.9B0.96%
45
HPE 7.625 09/01/27HEWLETT PACKARD ENTERPRISE C
611,725$29.3B0.94%
46
LITE 0.5 06/15/28LUMENTUM HLDGS INC
30,445,000$28.2B0.91%
47
BKNG 0.75 05/01/25BOOKING HOLDINGS INC
11,323,000$27.9B0.90%
48
JAZZ 2 06/15/26JAZZ INVESTMENTS I LTD
26,453,000$27.5B0.88%
49
BURL 1.25 12/15/27BURLINGTON STORES INC
20,561,000$27.2B0.87%
50
PANW 0.375 06/01/25PALO ALTO NETWORKS INC
7,890,000$27.1B0.87%
51
GPN 1.5 03/01/31GLOBAL PMTS INC
27,430,000$26.0B0.84%
52
NADNUVEEN QUALITY MUNCP INCOME
2,229,868$25.7B0.83%
53
CAKE 0.375 06/15/26CHEESECAKE FACTORY INC
25,957,000$25.7B0.83%
54
MCHP 7.5 03/15/28MICROCHIP TECHNOLOGY INC.
508,650$25.5B0.82%
55
HAE 0 03/01/26HAEMONETICS CORP MASS
26,562,000$25.5B0.82%
56
KOS 3.125 03/15/30KOSMOS ENERGY LTD
32,707,000$25.2B0.81%
57
WDC 3 11/15/28WESTERN DIGITAL CORP
19,411,000$25.0B0.80%
58
NACNUVEEN CA QUALTY MUN INCOME
2,184,910$24.6B0.79%
59
CABO 0 03/15/26CABLE ONE INC
25,725,000$24.4B0.79%
60
DBX 0 03/01/28DROPBOX INC
24,613,000$24.3B0.78%
61
MGPI 1.875 11/15/41MGP INGREDIENTS INC NEW
25,450,000$24.1B0.78%
62
MHDBLACKROCK MUNIHOLDINGS FD IN
1,979,686$23.2B0.75%
6323,717,000$23.1B0.74%
64
ARES 6.75 10/01/27 BARES MANAGEMENT CORPORATION
481,629$23.1B0.74%
65
PSN 2.625 03/01/29PARSONS CORP DEL
22,421,000$22.5B0.72%
66
GTLS 6.75 12/15/25 BCHART INDS INC
402,965$22.3B0.72%
67
PRGS 3.5 03/01/30PROGRESS SOFTWARE CORP
20,979,000$22.1B0.71%
68
BBIO 2.25 02/01/29BRIDGEBIO PHARMA INC
24,488,000$22.1B0.71%
69
GBX 2.875 04/15/28GREENBRIER COS INC
19,205,000$21.3B0.69%
70
AMPH 2 03/15/29AMPHASTAR PHARMACEUTICALS IN
23,215,000$20.7B0.67%
71
IRTC 1.5 09/01/29IRHYTHM TECHNOLOGIES INC
18,656,000$19.5B0.63%
72
RIVN 4.625 03/15/29RIVIAN AUTOMOTIVE INC
18,925,000$18.5B0.60%
73
ALNY 1 09/15/27ALNYLAM PHARMACEUTICALS INC
15,351,000$17.7B0.57%
74
FETFORUM ENERGY TECHNOLOGIES IN
875,452$17.6B0.57%
75
WK 1.25 08/15/28WORKIVA INC
17,070,000$15.9B0.51%
76
DHRDANAHER CORPORATION
76,712$15.7B0.51%
77
TDOC 1.25 06/01/27TELADOC HEALTH INC
15,539,000$14.3B0.46%
78
RCL 6 08/15/25ROYAL CARIBBEAN GROUP
3,402,000$14.1B0.45%
79
MUJBLACKROCK MUNIHLDGS NJ QLTY
1,251,050$14.1B0.45%
8013,787,000$13.6B0.44%
81
NVST 1.75 08/15/28ENVISTA HOLDINGS CORPORATION
14,908,000$13.5B0.43%
82
INN 1.5 02/15/26SUMMIT HOTEL PPTYS
13,391,000$12.8B0.41%
83
MHNBLACKROCK MUNIHLDGS NY QLTY
1,194,054$12.1B0.39%
84
MYNBLACKROCK MUNIYIELD N Y QUAL
1,146,355$11.4B0.37%
859,965,000$11.4B0.37%
8612,965,000$11.2B0.36%
8712,970,000$11.1B0.36%
88
TMDX 1.5 06/01/28TRANSMEDICS GROUP INC
10,117,000$10.9B0.35%
89
MUCBLACKROCK MUNIHLDNGS CALI QL
981,667$10.5B0.34%
90
GPORGULFPORT ENERGY CORP
56,782$10.5B0.34%
91
MQTBLACKROCK MUNIYIELD QUALITY
1,026,805$10.3B0.33%
92
MVFBLACKROCK MUNIVEST FD INC
1,420,434$10.0B0.32%
93
NBHNEUBERGER BERMAN MUN FD INC
941,392$9.8B0.31%
94
QTWO 0.75 06/01/26Q2 HLDGS INC
7,755,000$8.5B0.27%
95
NRKNUVEEN NEW YORK AMT QLT MUNI
797,635$8.2B0.26%
96
SEDG 0 09/15/25SOLAREDGE TECHNOLOGIES INC
8,343,000$8.1B0.26%
97
BSY 0.125 01/15/26BENTLEY SYS INC
8,106,000$7.8B0.25%
98
MIYBLACKROCK MUNIYIELD MICH QU
664,819$7.6B0.24%
99
AAL 6.5 07/01/25AMERICAN AIRLINES GROUP INC
7,315,000$7.3B0.24%
100
LYV 3.125 01/15/29LIVE NATION ENTERTAINMENT IN
5,257,000$7.3B0.23%
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