MACKAY SHIELDS LLC

CIK 0000061227 · Q1 2026

13F Equity AUM

$2.7B

-4.5% QoQ

Positions

111

-21 QoQ

AUM Rank

#1,485

Top 12%

Skill Alpha (FF)

-1.3%/yr^ns

No Clear Edge

Rank #4,125 · Top 50%

vs S&P -3.9%/yr (unadj.)

Quarters Tracked

~13 years

Portfolio Concentration

Top 5: 17.7%Top 10: 28.4%Top 20: 44.5%

LITE 0.5 06/15/285.3%

WDC 3 11/15/284.1%

AEIS 2.5 09/15/283.5%

MIRM 4 05/01/292.5%

QXO 5.5 05/15/282.4%

LNTH 2.625 12/15/272.2%

MKSI 1.25 06/01/302.2%

CABO 1.125 03/15/282.1%

TTEK 2.25 08/15/282.1%

UBER 0.875 12/01/28 2.0%

Others (101)71.6%

HHI (Herfindahl-Hirschman Index) measures portfolio concentration. Low (<1500) = diversified, Moderate (1500-2500), High (>2500) = concentrated bets.

Sector Allocation

Fixed Income34.0%

Technology19.8%

Unclassified15.4%

Healthcare8.9%

Financial Services8.3%

Consumer Cyclical4.9%

Communication Services2.4%

Other6.3%

Portfolio weight by GICS sector based on latest 13F filing. Sectors below 2% are grouped as “Other.”

Position Sizing

Positions: 111Median: 0.77%Avg: 0.90%

0–0.5%

40(7.4%)

0.5–1%

33(25.8%)

1–3%

35(54.0%)

3–5%

2(7.6%)

5%+

1(5.3%)

Count of positions per weight bucket — (%) = combined portfolio weight

Loading summary cards...

Portfolio Overlap

Shared: 106Unique: 5vs 20 funds

1.5%Low

111

Fund positions

7,299

Consensus CUSIPs

Jaccard similarity of this fund’s portfolio vs the consensus of top 20 funds by AUM. Low (<15%) = contrarian, Moderate (15-40%), High (>40%) = follows the crowd.

Most Similar Funds

Top 9 benchmark funds with highest portfolio overlap (Jaccard similarity)

2.6%

1.4%

1.5%

2.2%

BANK OF AMERICA CORP /DE/

1.5%

GEODE CAPITAL MANAGEMENT, LLC

0.1%

VANGUARD CAPITAL MANAGEMENT LLC

0.1%

VANGUARD PORTFOLIO MANAGEMENT LLC

0.1%

Jaccard similarity per fund: shared CUSIPs / (fund A + fund B − shared). Higher values indicate more similar portfolios.

Loading overlap analysis...

Position Changes This Quarter

New7Increased27Decreased55Exited28

New Positions

INTEGER HLDGS CORP1.6%

+45.2M

ORACLE CORP1.1%

+647K

UNITY SOFTWARE INC1.0%

+26.9M

PTON 5.5 12/01/290.9%

+19.4M

NINE ENERGY SERVICE …0.9%

+3.1M

MYI0.2%

+526K

ARROWHEAD PHARMACEUT…0.1%

+3.0M

Increased

FRPT 3 04/01/281.3%

+10.4M(+49%)

CABO 1.125 03/15/282.1%

+8.0M(+11%)

BBIO 2.25 02/01/291.4%

+4.6M(+16%)

NOG 3.625 04/15/291.3%

+3.3M(+11%)

AVAV 0 07/15/300.5%

+3.0M(+29%)

AFRM 0.75 12/15/290.9%

+2.9M(+12%)

SNOW 0 10/01/271.4%

+2.7M(+9%)

UBER 0.875 12/01/28 2.0%

+2.7M(+6%)

MQY0.6%

+1.2M(+345%)

MYN0.8%

+1.2M(+100%)

Decreased

FOUR 0.5 08/01/270.7%

-19,960,000(-51%)

QTWO 0.75 06/01/260.5%

-12,249,000(-48%)

POST 2.5 08/15/271.6%

-9,286,000(-19%)

VERX 0.75 05/01/290.3%

-8,938,000(-49%)

MTH 1.75 05/15/281.0%

-8,245,000(-23%)

BMRN 1.25 05/15/270.9%

-8,153,000(-24%)

TDOC 1.25 06/01/270.3%

-7,689,000(-51%)

DXCM 0.375 05/15/281.0%

-6,943,000(-19%)

STX 3.5 06/01/281.2%

-6,655,000(-50%)

FIVN 1 03/15/290.2%

-6,540,000(-51%)

Exited

-30,093,000

-30,319,000

-24,975,000

-9,890,000

-1,191,469

-12,790,000

-1,008,573

-1,192,311

-833,784

-8,498,000

Quarter-over-quarter changes compared to prior 13F filing. New = first appearance; Exited = no longer held.

Loading position changes...

Holdings

Loading holdings...