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Mackay Shields LLC

SEC CIK
0000061227
Latest filing
Jul 28, 2026

Holdings in Q3 2025

Holdings as of Sep 30, 2025, filed Oct 27, 2025. Long positions only; changes compare share counts with Q2 2025.

Institution overview
Positions
136
−9 vs. Q2 2025
Portfolio value
$2.94B
−$182.3M (−5.8%) vs. Q2 2025
Filed
Oct 27, 2025
SEC
Holdings of Mackay Shields LLC in Q3 2025
SecurityClassSharesValue% of portfolioShare changeActionHistory
Biomarin Pharmaceutical Inc09061GAK7NOTE 1.250% 5/1–$33.4M1.1%–––
Tyler Tex Indpt SCH Dist902252AB1NOTE 0.250% 3/1–$33.7M1.1%–––
Dexcom Inc252131AM9NOTE 0.375% 5/1–$34.0M1.2%–––
Chefs Whse Inc163086AE1NOTE 2.375%12/1–$34.9M1.2%–––
MCHPPMicrochip Technology IncDEP SHS REPSTG609,163$36.0M1.2%−3,440−0.6%ReducedHistory
Patk703343AG812/01/2028–$38.0M1.3%–––
Meritage Homes CORP59001ABF8NOTE 1.750% 5/1–$38.0M1.3%–––
IAUiShares Gold TrustETF525,000$38.2M1.3%−30,000−5.4%ReducedHistory
Ionis Pharmaceuticals Inc462222AF7NOTE 1.750% 6/1–$38.5M1.3%–––
Etsy Inc29786AAJ5NOTE 0.125%10/0–$39.0M1.3%–––
SHIFT4 PMTS Inc82452JAD1NOTE 0.500% 8/0–$39.4M1.3%–––
Snowflake Inc.833445AB5NOTE 10/0–$40.1M1.4%–New–
NCL Corp Ltd62886HBD2NOTE 1.125% 2/1–$40.3M1.4%–––
MKS Inc55306NAB0NOTE 1.250% 6/0–$40.8M1.4%–––
HPE.PCHewlett Packard Enterprise Co7.625 MAND CONV605,178$41.2M1.4%−3,062−0.5%ReducedHistory
Akamai Technologies Inc00971TAL5NOTE 0.375% 9/0–$41.6M1.4%–––
Lumentum Hldgs Inc55024UAF6NOTE 0.500% 6/1–$42.5M1.4%–––
iRhythm Holdings, Inc.450056AB2NOTE 1.500% 9/0–$42.5M1.4%–––
On Semiconductor Corp682189AS4NOTE 5/0–$45.6M1.6%–––
Liberty Media Corp531229AQ5NOTE 2.250% 8/1–$45.7M1.6%–––
Osi Systems Inc671044AF2NOTE 2.250% 8/0–$47.3M1.6%–New–
Apollo Global Mgmt Inc03769M304SER A MAND CNV721,847$51.0M1.7%−3,217−0.4%Reduced–
Nutanix, Inc.67059NAH1NOTE 0.250%10/0–$56.1M1.9%–––
Post Hldgs Inc737446AT1NOTE 2.500% 8/1–$56.3M1.9%–––
Cable One, Inc.12685JAG0NOTE 1.125% 3/1–$57.7M2.0%–––
Halozyme Therapeutics, Inc.40637HAD1NOTE 0.250% 3/0–$58.0M2.0%–New–
BA.PABoeing CoDEP CONV PFD A841,981$58.6M2.0%−3,742−0.4%ReducedHistory
Lantheus Hldgs Inc516544AB9NOTE 2.625%12/1–$58.7M2.0%–––
PG&E Corp69331CAL2NOTE 4.250%12/0–$61.3M2.1%–––
Western Digital Corp958102AT2NOTE 3.000%11/1–$61.7M2.1%–––
Advanced Energy Inds007973AE0NOTE 2.500% 9/1–$62.7M2.1%–––
Mirum Pharmaceuticals, Inc.604749AB7NOTE 4.000% 5/0–$63.1M2.1%–––
Uber Technologies, Inc90353TAM2NOTE 0.875%12/0–$63.3M2.2%–––
Tetra Tech Inc88162GAB9DBCV 2.250% 8/1–$63.5M2.2%–––
QXO.PBQXO, Inc.5.50 DEP PFD1,186,085$65.5M2.2%+267,383+29.1%AddedHistory
Seagate HDD Cayman81180WBL4NOTE 3.500% 6/0–$73.7M2.5%–––

Sold out since Q2 2025 (19)

Positions held at the end of Q2 2025 that are gone from this filing.

Positions of Mackay Shields LLC sold out since Q2 2025
SecurityClassShares in Q2 2025Value in Q2 2025% of portfolio in Q2 2025History
NICE Ltd.653656AB4NOTE 9/1–$57.6M1.8%–
Halozyme Therapeutics, Inc.40637HAF6NOTE 1.000% 8/1–$49.8M1.6%–
Nextera Energy Inc65339F713UNIT 09/01/20251,204,627$48.0M1.5%–
Centennial Resource Dev Inc15136AAA0NOTE 3.250% 4/0–$35.8M1.1%–
Chart Inds Inc16115Q4076.75DP CNV PFD B400,972$24.4M0.8%–
Kosmos Energy Ltd.500688AH9NOTE 3.125% 3/1–$22.0M0.7%–
FETForum Energy Technologies, Inc.COM809,235$15.8M0.5%History
Envista Holdings Corp29415FAD6NOTE 1.750% 8/1–$13.9M0.4%–
Okta, Inc.679295AD7NOTE 0.125% 9/0–$13.7M0.4%–
Summit Hotel Pptys Inc866082AA8NOTE 1.500% 2/1–$13.0M0.4%–
TransMedics Group, Inc.89377MAB5NOTE 1.500% 6/0–$9.82M0.3%–
MHIPioneer Municipal High Income Fund, Inc.COM SHS777,329$7.12M0.2%History
MAVPioneer Municipal High Income Advantage Fund, Inc.COM736,710$6.11M0.2%History
NCL Corp Ltd62886HAX9NOTE 5.375% 8/0–$4.53M0.1%–
Solaredge Technologies, Inc.83417MAD6NOTE 9/1–$3.09M0.1%–
NBBNuveen Taxable Municipal Income FundCOM156,775$2.48M0.1%History
American Airls Group Inc02376RAF9NOTE 6.500% 7/0–$2.32M0.1%–
MYIBlackRock Muniyield Quality Fund III, Inc.COM88,233$925.6K<0.1%History
NANNuveen New York Quality Municipal Income FundCOM53,530$610.8K<0.1%History