MACKAY SHIELDS LLC

hedge fundUpdated 44 days ago

Managed by Mackay Shields Llc • Latest filing Q2 2026

Portfolio value

$3B

Q2 2026

Filings

13

Quarterly 13F history

Top-10 concentration

100.0%

Weight of largest holdings

Annualized return

-5.8%

Implied from 13F holdings

Portfolio value history

13F-disclosed portfolio value over 13 quarters

Show data table

Period	Portfolio value
Q2 2023	$3.6B
Q3 2023	$3.6B
Q4 2023	$3.4B
Q1 2024	$3.6B
Q2 2024	$3.3B
Q3 2024	$3.6B
Q4 2024	$3.4B
Q1 2025	$3.1B
Q2 2025	$3.1B
Q3 2025	$2.9B
Q4 2025	$2.9B
Q1 2026	$2.7B
Q2 2026	$3B

Top holdings

306 positions as of Q2 2026

#	Stock	Value	Shares	% Portfolio	Change
1	W WDC WESTERN DIGITAL CORP	$112.4M	6.67M	3.77%	Added(+221.6%)
2	G GOOGN ALPHABET INC	$98.1M	1.94M	3.29%	—
3	M MKSI MKS INC.	$94.8M	32.17M	3.18%	Added(+33408.3%)
4	? N/A LANTHEUS HLDGS INC	$63M	43.27M	2.11%	Added(+2078.6%)
5	L LITE LUMENTUM HLDGS INC	$62.8M	9.62M	2.10%	Added(+598.3%)
6	H HPE-PC HEWLETT PACKARD ENTERPRISE C	$57.6M	492.7K	1.93%	Added(+18182.0%)
7	? N/A QXO INC	$49.8M	1.01M	1.67%	Unchanged
8	N NEE-PS NEXTERA ENERGY INC	$47.5M	885.4K	1.59%	Added(+609.3%)
9	T TTEK TETRA TECH INC NEW	$46.7M	44.29M	1.56%	Added(+1682.4%)
10	B BA-PA BOEING CO	$46.5M	685.6K	1.56%	Added(+1699.5%)
11	E ETSY ETSY INC	$45.5M	44.63M	1.53%	Added(+3238.2%)
12	? N/A UBER TECHNOLOGIES INC	$43.3M	36.11M	1.45%	Added(+1548.1%)
13	? N/A INTEGER HLDGS CORP	$41.9M	43.15M	1.40%	Added(+2051.2%)
14	S SNOW SNOWFLAKE INC	$41.6M	25.01M	1.39%	Added(+362.4%)
15	? N/A CHEFS WHSE INC	$40.6M	18.16M	1.36%	Added(+293.1%)
16	? N/A MERIT MED SYS INC	$39M	36.19M	1.31%	—
17	P PCG-PX PG&E CORP	$38.8M	37.88M	1.30%	Added(+508.2%)
18	? N/A DATADOG INC	$37.4M	26.23M	1.25%	Trimmed(-19.5%)
19	M MCHPP MICROCHIP TECHNOLOGY INC.	$37.2M	482.5K	1.25%	Added(+2240.1%)
20	? N/A APOLLO GLOBAL MGMT INC	$36.4M	597.4K	1.22%	Added(+2048.9%)

W

WESTERN DIGITAL CORP

+221.6%

Value

$112.4M

Shares

6.67M

% Port

3.77%

G

ALPHABET INC

Value

$98.1M

Shares

1.94M

% Port

3.29%

M

MKS INC.

+33408.3%

Value

$94.8M

Shares

32.17M

% Port

3.18%

?

4.N/A

LANTHEUS HLDGS INC

+2078.6%

Value

$63M

Shares

43.27M

% Port

2.11%

L

LUMENTUM HLDGS INC

+598.3%

Value

$62.8M

Shares

9.62M

% Port

2.10%

H

HEWLETT PACKARD ENTERPRISE C

+18182.0%

Value

$57.6M

Shares

492.7K

% Port

1.93%

?

7.N/A

QXO INC

Unchanged

Value

$49.8M

Shares

1.01M

% Port

1.67%

N

NEXTERA ENERGY INC

+609.3%

Value

$47.5M

Shares

885.4K

% Port

1.59%

T

TETRA TECH INC NEW

+1682.4%

Value

$46.7M

Shares

44.29M

% Port

1.56%

B

BOEING CO

+1699.5%

Value

$46.5M

Shares

685.6K

% Port

1.56%

E

ETSY INC

+3238.2%

Value

$45.5M

Shares

44.63M

% Port

1.53%

?

12.N/A

UBER TECHNOLOGIES INC

+1548.1%

Value

$43.3M

Shares

36.11M

% Port

1.45%

?

13.N/A

INTEGER HLDGS CORP

+2051.2%

Value

$41.9M

Shares

43.15M

% Port

1.40%

S

SNOWFLAKE INC

+362.4%

Value

$41.6M

Shares

25.01M

% Port

1.39%

?

15.N/A

CHEFS WHSE INC

+293.1%

Value

$40.6M

Shares

18.16M

% Port

1.36%

?

16.N/A

MERIT MED SYS INC

Value

$39M

Shares

36.19M

% Port

1.31%

P

PG&E CORP

+508.2%

Value

$38.8M

Shares

37.88M

% Port

1.30%

?

18.N/A

DATADOG INC

-19.5%

Value

$37.4M

Shares

26.23M

% Port

1.25%

M

MICROCHIP TECHNOLOGY INC.

+2240.1%

Value

$37.2M

Shares

482.5K

% Port

1.25%

?

20.N/A

APOLLO GLOBAL MGMT INC

+2048.9%

Value

$36.4M

Shares

597.4K

% Port

1.22%

View full portfolio (306 holdings) →

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