account_balance
Investment manager · 13F filer · SEC CIK 61227
MacKay Shields LLC
Reported value$2.99Bas of Jun 30, 2026
Positions108 13 new, 16 sold out
Top 10 weight28.0%Western Digital Corp alone is 5%
FiledJul 2828 days after quarter end
Portfolio · as of Jun 30, 2026
Where the money is
New or addedTrimmedHeld
Western Digital Corp
5.1%Trimmed −42%
GOOGMAlphabet Inc
4.1%New
MKS Inc.
3.6%
Lumentum Hldgs Inc
2.8%Trimmed −52%
Lantheus Hldgs Inc
2.5%
HPEPRCHewlett Packard Enterprise C
2.4%
Cable One Inc
2.0%Added +16%
QXOPRBQxo Inc
1.9%
BAPRABoeing Co
1.9%
Tetra Tech Inc New
1.9%Trimmed −4%
Uber Technologies Inc
1.8%
Snowflake Inc
1.8%
Western Digital Corp
5.1%Trimmed −42%
GOOGMAlphabet Inc
4.1%New
MKS Inc.
3.6%
Lumentum Hldgs Inc
2.8%Trimmed −52%
Lantheus Hldgs Inc
2.5%
HPEPRC2.4%
Cable One Inc2.0%
QXOPRB1.9%
BAPRA1.9%
Tetra Tech Inc New1.9%
Uber Technologies Inc1.8%
Snowflake Inc1.8%
Boxes show the top 12 stocks, sized against each other. The bar above shows how much of the fund they are. 13F only covers US-listed stocks, so foreign holdings and short positions are missing.
Show the top 12 as a list
Western Digital Corp 5.1% Trimmed −42%
GOOGM Alphabet Inc 4.1% NewMKS Inc. 3.6% Held
Lumentum Hldgs Inc 2.8% Trimmed −52%
Lantheus Hldgs Inc 2.5% Held
HPEPRC Hewlett Packard Enterprise C 2.4% Held
Cable One Inc 2.0% Added +16%
QXOPRB Qxo Inc 1.9% Held
BAPRA Boeing Co 1.9% Held
Tetra Tech Inc New 1.9% Trimmed −4%
Uber Technologies Inc 1.8% Held
Snowflake Inc 1.8% Held
What changed
Biggest moves since Mar 31, 2026
add_circleNew
- GOOGM $123M
- Merit Med Sys Inc $41.1M
- Revolution Medicines Inc $38.1M
- Jazz Investments I Ltd $34.7M
arrow_upwardAdded
- Arrowhead Pharmaceuticals In +582%
- NEEPRS +99%
- WBD +58%
- Etsy Inc +52%
arrow_downwardTrimmed
- Mirum Pharmaceuticals Inc −92%
- Advanced Energy Inds −88%
- Lumentum Hldgs Inc −52%
- Nutanix Inc −44%
remove_circleSold out
- NCL Corp Ltd $38M
- Seagate HDD Cayman $31.5M
- Jazz Investments I Ltd $15.9M
- Lumentum Hldgs Inc $15.6M