MACKAY SHIELDS LLC — 13F Holdings

2026 Q2  ·  124 Positions

2026 Q2 Portfolio Activity

In 2026 Q2, MACKAY SHIELDS LLC maintained a portfolio of 124 distinct positions. They heavily accumulated shares in WESTERN DIGITAL CORP, increasing the position by 19793.3%. Conversely, MACKAY SHIELDS LLC completely exited their position in LUMENTUM HLDGS INC.
Position History hover any row below to update
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MACKAY SHIELDS LLC New York, NY Asset Manager AUM $1,091M
PCA Score Concentration Risk
Risk ENB
Total Positions
124
Quarter
2026 Q2
Top Holding
N/A (5.1%)
Top 10 Concentration
28.0%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 124

MACKAY SHIELDS LLC Full Holdings List — 2026 Q2

Stock History Sector / Type Port % Prev % Rank / Prev Conviction
Freshness
Change % Change Influence Shares Mkt Value Avg Cost Price Held 1st Owned Source Source Date Date Reported
N/A
WESTERN DIGITAL...
Bond/Debt 5.05% 4.06% #1 1
Prev: #2
4.0
-6,524,000 -42.2%
P
S
8,952,000 $150,816,792 13F Filing 2026-06-30 2026-07-28
N/A
ALPHABET INC
Unknown 4.11% #2
Prev: #—
6.6
2,427,303
NEW
2,427,303 $122,643,950 13F Filing 2026-06-30 2026-07-28
N/A
MKS INC.
Bond/Debt 3.60% 2.21% #3 4
Prev: #7
2.9
-40,000 -0.1%
P
S
36,470,000 $107,477,663 13F Filing 2026-06-30 2026-07-28
N/A
LUMENTUM HLDGS ...
Bond/Debt 2.82% 5.26% #4 3
Prev: #1
1.6
-13,902,000 -51.9%
P
S
12,884,000 $84,112,403 13F Filing 2026-06-30 2026-07-28
N/A
LANTHEUS HLDGS ...
Bond/Debt 2.48% 2.24% #5 1
Prev: #6
2.0
-35,000 -0.1%
P
S
50,863,000 $74,003,121 13F Filing 2026-06-30 2026-07-28
HPE/PRC
HEWLETT PACKARD...
Unknown 2.35% 1.43% #6 13
Prev: #19
1.4
-593 -0.1%
P
S
601,263 $70,210,944 2024 Q3 13F Filing 2026-06-30 2026-07-28
N/A
CABLE ONE INC
Bond/Debt 1.97% 2.14% #7 1
Prev: #8
2.8
12,529,000 16.2%
P
S
89,888,000 $58,775,896 13F Filing 2026-06-30 2026-07-28
QXOBV
QXO INC
Preferred 1.92% 2.39% #8 3
Prev: #5
1.3
-873 -0.1%
P
S
1,169,488 $57,413,691 2025 Q2 13F Filing 2026-06-30 2026-07-28
BA/PRA
BOEING CO
Preferred 1.88% 1.98% #9 2
Prev: #11
1.3
-740 -0.1%
P
S
828,674 $56,171,414 2024 Q4 13F Filing 2026-06-30 2026-07-28
N/A
TETRA TECH INC ...
Unknown 1.85% 2.10% #10 1
Prev: #9
1.2
-2,073,000 -3.8%
P
S
52,445,000 $55,268,887 13F Filing 2026-06-30 2026-07-28
N/A
UBER TECHNOLOGI...
Bond/Debt 1.82% 2.00% #11 1
Prev: #10
1.2
12,000 0.0%
P
S
45,364,000 $54,331,944 13F Filing 2026-06-30 2026-07-28
N/A
SNOWFLAKE INC
Bond/Debt 1.81% 1.41% #12 8
Prev: #20
1.2
-29,000 -0.1%
P
S
32,541,000 $54,155,943 13F Filing 2026-06-30 2026-07-28
N/A
CHEFS WHSE INC
Bond/Debt 1.78% 1.29% #13 14
Prev: #27
1.2
-39,000 -0.2%
P
S
23,710,000 $53,041,671 13F Filing 2026-06-30 2026-07-28
N/A
ETSY INC
Bond/Debt 1.70% 1.17% #14 21
Prev: #35
3.7
17,150,000 52.4%
P
S
49,886,000 $50,886,574 13F Filing 2026-06-30 2026-07-28
NEE/PRS
NEXTERA ENERGY ...
Unknown 1.69% 0.98% #15 27
Prev: #42
3.7
468,014 99.0%
P
S
940,950 $50,463,149 2025 Q3 13F Filing 2026-06-30 2026-07-28
N/A
PG&E CORP
Bond/Debt 1.59% 1.76% #16 3
Prev: #13
1.1
69,000 0.1%
P
S
46,453,000 $47,525,062 13F Filing 2026-06-30 2026-07-28
MCHPP
MICROCHIP TECHN...
Technology 1.56% 1.26% #17 12
Prev: #29
1.1
2,444 0.4%
P
S
603,491 $46,450,746 2025 Q1 13F Filing 2026-06-30 2026-07-28
BTT
BLACKROCK MUN T...
Financial Services 1.50% 1.30% #18 8
Prev: #26
3.1
401,718 25.6%
P
S
1,967,980 $44,771,545 2016 Q3 13F Filing 2026-06-30 2026-07-28
N/A
INTEGER HLDGS C...
Unknown 1.47% 1.59% #19 4
Prev: #15
1.1
84,000 0.2%
P
S
45,243,000 $43,942,264 13F Filing 2026-06-30 2026-07-28
APO/PRA
APOLLO GLOBAL M...
Unknown 1.46% 1.54% #20 4
Prev: #16
1.1
-656 -0.1%
P
S
713,153 $43,457,785 2023 Q3 13F Filing 2026-06-30 2026-07-28
N/A
LIBERTY MEDIA C...
Bond/Debt 1.41% 1.44% #21 4
Prev: #17
1.1
-78,000 -0.2%
P
S
33,894,000 $42,050,710 13F Filing 2026-06-30 2026-07-28
N/A
POST HLDGS INC
Bond/Debt 1.40% 1.60% #22 8
Prev: #14
1.1
-67,000 -0.2%
P
S
40,161,000 $41,655,230 13F Filing 2026-06-30 2026-07-28
N/A
MERIT MED SYS I...
Bond/Debt 1.38% #23
Prev: #—
4.1
38,073,000
NEW
38,073,000 $41,080,767 13F Filing 2026-06-30 2026-07-28
N/A
AKAMAI TECHNOLO...
Bond/Debt 1.37% 1.44% #24 6
Prev: #18
1.0
205,000 0.6%
P
S
34,024,000 $40,843,389 13F Filing 2026-06-30 2026-07-28
N/A
ON SEMICONDUCTO...
Bond/Debt 1.34% 1.86% #25 13
Prev: #12
0.5
-17,222,000 -44.0%
P
S
21,949,000 $39,963,727 13F Filing 2026-06-30 2026-07-28
N/A
NINE ENERGY SER...
Unknown 1.31% 0.92% #26 23
Prev: #49
1.0
-54,869 -1.8%
P
S
3,011,565 $39,180,461 13F Filing 2026-06-30 2026-07-28
N/A
DATADOG INC
Bond/Debt 1.31% 1.20% #27 5
Prev: #32
1.0
-6,364,000 -18.8%
P
S
27,438,000 $39,071,712 13F Filing 2026-06-30 2026-07-28
N/A
REVOLUTION MEDI...
Bond/Debt 1.28% #28
Prev: #—
4.0
30,344,000
NEW
30,344,000 $38,069,140 13F Filing 2026-06-30 2026-07-28
N/A
FRESHPET INC
Bond/Debt 1.24% 1.34% #29 5
Prev: #24
1.0
9,000 0.0%
P
S
31,800,000 $36,956,373 13F Filing 2026-06-30 2026-07-28
N/A
BRIDGEBIO PHARM...
Bond/Debt 1.24% 1.37% #30 8
Prev: #22
1.0
-56,000 -0.2%
P
S
33,259,000 $36,917,577 13F Filing 2026-06-30 2026-07-28
N/A
IRHYTHM HOLDING...
Bond/Debt 1.20% 1.31% #31 6
Prev: #25
1.0
-33,000 -0.1%
P
S
32,598,000 $35,896,303 13F Filing 2026-06-30 2026-07-28
N/A
LIVE NATION ENT...
Bond/Debt 1.19% 1.18% #32 2
Prev: #34
1.5
no change no change
P
S
29,737,000 $35,565,452 13F Filing 2026-06-30 2026-07-28
N/A
PELOTON INTERAC...
Bond/Debt 1.17% 0.95% #33 10
Prev: #43
2.5
2,082,000 10.7%
P
S
21,499,000 $34,867,996 13F Filing 2026-06-30 2026-07-28
N/A
FLUOR CORP
Bond/Debt 1.16% 1.19% #34 1
Prev: #33
1.0
-145,000 -0.6%
P
S
26,167,000 $34,699,438 13F Filing 2026-06-30 2026-07-28
N/A
JAZZ INVESTMENT...
Bond/Debt 1.16% #35
Prev: #—
4.0
20,318,000
NEW
20,318,000 $34,657,429 13F Filing 2026-06-30 2026-07-28
N/A
NORTHERN OIL & ...
Bond/Debt 1.07% 1.34% #36 13
Prev: #23
0.9
-55,000 -0.2%
P
S
33,241,000 $31,899,375 13F Filing 2026-06-30 2026-07-28
N/A
AFFIRM HLDGS IN...
Bond/Debt 1.06% 0.93% #37 11
Prev: #48
0.9
-37,000 -0.1%
P
S
27,113,000 $31,704,730 13F Filing 2026-06-30 2026-07-28
N/A
CYBERARK SOFTWA...
Bond/Debt 1.06% #38
Prev: #—
3.9
19,004,000
NEW
19,004,000 $31,616,914 13F Filing 2026-06-30 2026-07-28
N/A
CLOUDFLARE INC
Bond/Debt 1.06% #39
Prev: #—
3.9
24,872,000
NEW
24,872,000 $31,512,824 13F Filing 2026-06-30 2026-07-28
N/A
UNITY SOFTWARE ...
Bond/Debt 1.02% 0.98% #40
Prev: #40
0.9
2,000 0.0%
P
S
26,904,000 $30,459,761 13F Filing 2026-06-30 2026-07-28
N/A
ORACLE CORP
Unknown 0.98% 1.09% #41 4
Prev: #37
0.9
-1,045 -0.2%
P
S
645,801 $29,118,755 13F Filing 2026-06-30 2026-07-28
N/A
MERITAGE HOMES ...
Bond/Debt 0.97% 1.00% #42 3
Prev: #39
0.9
-94,000 -0.3%
P
S
28,031,000 $28,997,541 13F Filing 2026-06-30 2026-07-28
N/A
PATRICK INDS IN...
Bond/Debt 0.95% 1.22% #43 12
Prev: #31
0.9
-18,000 -0.1%
P
S
19,118,000 $28,330,050 13F Filing 2026-06-30 2026-07-28
N/A
LIBERTY MEDIA C...
Bond/Debt 0.94% 0.93% #44 3
Prev: #47
1.4
no change no change
P
S
24,458,000 $28,083,899 13F Filing 2026-06-30 2026-07-28
N/A
BURLINGTON STOR...
Bond/Debt 0.94% 1.24% #45 15
Prev: #30
0.9
-2,850,000 -14.0%
P
S
17,529,000 $27,985,049 13F Filing 2026-06-30 2026-07-28
N/A
PROGRESS SOFTWA...
Bond/Debt 0.92% 0.94% #46
Prev: #46
0.9
-103,000 -0.4%
P
S
28,590,000 $27,466,838 13F Filing 2026-06-30 2026-07-28
BAC/PRL
BANK OF AMER CO...
Preferred 0.88% 0.91% #47 4
Prev: #51
0.9
-61 -0.3%
P
S
20,806 $26,133,216 2010 Q1 13F Filing 2026-06-30 2026-07-28
N/A
PARSONS CORP DE...
Bond/Debt 0.86% 0.95% #48 4
Prev: #44
0.8
34,000 0.1%
P
S
26,167,000 $25,808,512 13F Filing 2026-06-30 2026-07-28
N/A
BIOMARIN PHARMA...
Bond/Debt 0.86% 0.94% #49 4
Prev: #45
0.8
-68,000 -0.3%
P
S
26,434,000 $25,738,211 13F Filing 2026-06-30 2026-07-28
IAU
ISHARES GOLD TR
ETF 0.83% 1.26% #50 22
Prev: #28
0.8
-62,130 -15.9%
P
S
328,020 $24,768,790 2017 Q1 13F Filing 2026-06-30 2026-07-28
Showing 1-50 of 124 holdings

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