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Mackay Shields LLC

SEC CIK
0000061227
Latest filing
Jul 28, 2026

Holdings in Q2 2025

Holdings as of Jun 30, 2025, filed Jul 24, 2025. Long positions only; changes compare share counts with Q1 2025.

Institution overview
Positions
145
+1 vs. Q1 2025
Portfolio value
$3.12B
+$12.7M (+0.4%) vs. Q1 2025
Filed
Jul 24, 2025
SEC
Holdings of Mackay Shields LLC in Q2 2025
SecurityClassSharesValue% of portfolioShare changeActionHistory
Tetra Tech Inc88162GAB9DBCV 2.250% 8/1–$72.8M2.3%–––
Lantheus Hldgs Inc516544AB9NOTE 2.625%12/1–$71.0M2.3%–––
Post Hldgs Inc737446AT1NOTE 2.500% 8/1–$67.0M2.1%–––
Uber Technologies, Inc90353TAM2NOTE 0.875%12/0–$61.8M2.0%–––
PG&E Corp69331CAL2NOTE 4.250%12/0–$60.3M1.9%–––
BA.PABoeing CoDEP CONV PFD A845,723$57.7M1.8%+223,643+36.0%AddedHistory
Nutanix, Inc.67059NAH1NOTE 0.250%10/0–$57.6M1.8%–––
NICE Ltd.653656AB4NOTE 9/1–$57.6M1.8%–––
QXO.PBQXO, Inc.5.50 DEP PFD918,702$56.6M1.8%+918,702NewHistory
Apollo Global Mgmt Inc03769M304SER A MAND CNV725,064$54.6M1.7%−3,761−0.5%Reduced–
Advanced Energy Inds007973AE0NOTE 2.500% 9/1–$54.6M1.7%–––
Seagate HDD Cayman81180WBL4NOTE 3.500% 6/0–$54.3M1.7%–––
Chefs Whse Inc163086AE1NOTE 2.375%12/1–$54.0M1.7%–––
On Semiconductor Corp682189AS4NOTE 5/0–$53.6M1.7%–New–
Halozyme Therapeutics, Inc.40637HAF6NOTE 1.000% 8/1–$49.8M1.6%–––
Mirum Pharmaceuticals, Inc.604749AB7NOTE 4.000% 5/0–$49.5M1.6%–––
Cable One, Inc.12685JAG0NOTE 1.125% 3/1–$48.2M1.5%–––
Nextera Energy Inc65339F713UNIT 09/01/20251,204,627$48.0M1.5%−8,188−0.7%Reduced–
Liberty Media Corp531229AQ5NOTE 2.250% 8/1–$46.1M1.5%–––
NEANuveen AMT-Free Quality Municipal Income FundCOM4,002,639$43.7M1.4%00.0%UnchangedHistory
Patk703343AG812/01/2028–$43.6M1.4%–––
SHIFT4 PMTS Inc82452JAD1NOTE 0.500% 8/0–$43.0M1.4%–––
Akamai Technologies Inc00971TAL5NOTE 0.375% 9/0–$42.7M1.4%–––
Biomarin Pharmaceutical Inc09061GAK7NOTE 1.250% 5/1–$41.8M1.3%–––
MCHPPMicrochip Technology IncDEP SHS REPSTG612,603$40.9M1.3%+103,953+20.4%AddedHistory
iRhythm Holdings, Inc.450056AB2NOTE 1.500% 9/0–$39.7M1.3%–––
NCL Corp Ltd62886HBD2NOTE 1.125% 2/1–$38.7M1.2%–––
Tyler Tex Indpt SCH Dist902252AB1NOTE 0.250% 3/1–$38.3M1.2%–––
MKS Inc55306NAB0NOTE 1.250% 6/0–$36.9M1.2%–New–
Etsy Inc29786AAJ5NOTE 0.125%10/0–$36.4M1.2%–––
Meritage Homes CORP59001ABF8NOTE 1.750% 5/1–$36.2M1.2%–New–
HPE.PCHewlett Packard Enterprise Co7.625 MAND CONV608,240$35.9M1.2%−3,485−0.6%ReducedHistory
Centennial Resource Dev Inc15136AAA0NOTE 3.250% 4/0–$35.8M1.1%–––
NZFNuveen Municipal Credit Income FundCOM SH BEN INT2,972,732$35.4M1.1%−6,858−0.2%ReducedHistory
Fluor Corp343412AJ1NOTE 1.125% 8/1–$35.3M1.1%–New–
Dexcom Inc252131AM9NOTE 0.375% 5/1–$35.3M1.1%–New–
Western Digital Corp958102AT2NOTE 3.000%11/1–$34.9M1.1%–––
IAUiShares Gold TrustETF555,000$34.6M1.1%−105,000−15.9%ReducedHistory
BTTBlackRock Municipal 2030 Target Term TrustCOM SHS BEN IN1,563,907$34.2M1.1%00.0%UnchangedHistory
Progress Software Corp743312AD2NOTE 3.500% 3/0–$33.7M1.1%–––
Northern Oil & Gas, Inc.665531AJ8NOTE 3.625% 4/1–$33.7M1.1%–––
Lumentum Hldgs Inc55024UAF6NOTE 0.500% 6/1–$31.6M1.0%–––
Liberty Media Corp531229AP7NOTE 3.750% 3/1–$31.1M1.0%–––
Q2 Hldgs Inc74736LAD1NOTE 0.750% 6/0–$30.8M1.0%–––
Ford MTR Co Del345370CZ1NOTE 3/1–$30.6M1.0%–––
Ionis Pharmaceuticals Inc462222AF7NOTE 1.750% 6/1–$29.3M0.9%–––
NVGNuveen AMT-Free Municipal Credit Income FundCEF2,411,254$28.8M0.9%−12,429−0.5%ReducedHistory
Parsons Corp70202LAD4NOTE 2.625% 3/0–$28.2M0.9%–––
BridgeBio Pharma, Inc.10806XAD4NOTE 2.250% 2/0–$27.1M0.9%–––
Jazz Investments I Ltd472145AF8NOTE 2.000% 6/1–$26.8M0.9%–––
Burlington Stores, Inc.122017AD8NOTE 1.250%12/1–$26.6M0.9%–––
TALOTalos Energy Inc.COM3,132,176$26.6M0.9%00.0%UnchangedHistory
ARES.PBAres Management Corp6.75 SE B PFD479,590$26.1M0.8%−2,039−0.4%ReducedHistory
NADNuveen Quality Municipal Income FundCOM2,227,951$25.2M0.8%−1,917−0.1%ReducedHistory
Dropbox, Inc.26210CAD6NOTE 3/0–$25.1M0.8%–––
Global PMTS Inc37940XAU6NOTE 1.500% 3/0–$24.6M0.8%–––
CONMED Corp207410AH4NOTE 2.250% 6/1–$24.5M0.8%–––
Chart Inds Inc16115Q4076.75DP CNV PFD B400,972$24.4M0.8%−1,993−0.5%Reduced–
NACNuveen California Quality Municipal Income FundCOM2,150,869$24.0M0.8%−34,041−1.6%ReducedHistory
Cable One, Inc.12685JAE5NOTE 3/1–$24.0M0.8%–––
MHDBlackRock Muniholdings Fund, Inc.COM2,126,547$23.8M0.8%+146,861+7.4%AddedHistory
Bank of Amer Corp0605056827.25%CNV PFD L18,140$22.1M0.7%−11,811−39.4%Reduced–
Vertex, Inc.92538JAB2NOTE 0.750% 5/0–$22.0M0.7%–New–
Kosmos Energy Ltd.500688AH9NOTE 3.125% 3/1–$22.0M0.7%–––
Oil STS Intl Inc678026AK1NOTE 4.750% 4/0–$21.3M0.7%–––
Cheesecake Factory Inc163072AA9NOTE 0.375% 6/1–$21.1M0.7%–––
Haemonetics Corp Mass405024AB6NOTE 3/0–$20.8M0.7%–––
Greenbrier Cos Inc393657AM3NOTE 2.875% 4/1–$20.5M0.7%–––
Alnylam Pharmaceuticals, Inc.02043QAB3NOTE 1.000% 9/1–$19.9M0.6%–––
Rivian Automotive, Inc.76954AAB9NOTE 4.625% 3/1–$19.2M0.6%–––
WFC.PLWells Fargo & CompanyPERP PFD CNV A15,779$18.6M0.6%−12,340−43.9%ReducedHistory
MGP Ingredients Inc55303JAB2NOTE 1.875%11/1–$18.5M0.6%–––
Amphastar Pharmaceuticals IN03209RAB9NOTE 2.000% 3/1–$17.4M0.6%–––
Workiva Inc98139AAD7NOTE 1.250% 8/1–$15.9M0.5%–––
FETForum Energy Technologies, Inc.COM809,235$15.8M0.5%−66,217−7.6%ReducedHistory
Spectrum Brands Inc84762LAZ8NOTE 3.375% 6/0–$15.1M0.5%–New–
Teladoc Health, Inc.87918AAF2NOTE 1.250% 6/0–$14.4M0.5%–––
Lumentum Hldgs Inc55024UAH2NOTE 1.500%12/1–$13.9M0.4%–New–
Envista Holdings Corp29415FAD6NOTE 1.750% 8/1–$13.9M0.4%–––
Okta, Inc.679295AD7NOTE 0.125% 9/0–$13.7M0.4%–––
MUJBlackRock Muniholdings New Jersey Quality Fund, Inc.COM1,251,050$13.7M0.4%00.0%UnchangedHistory
Summit Hotel Pptys Inc866082AA8NOTE 1.500% 2/1–$13.0M0.4%–––
Impinj Inc453204AD1NOTE 1.125% 5/1–$12.4M0.4%–––
MHNBlackRock Muniholdings New York Quality Fund, Inc.COM1,193,269$11.7M0.4%−785−0.1%ReducedHistory
NBHNeuberger Municipal Fund Inc.COM1,180,981$11.6M0.4%+239,589+25.5%AddedHistory
Rapid7, Inc.753422AH7NOTE 1.250% 3/1–$11.5M0.4%–––
Five9, Inc.338307AF8NOTE 1.000% 3/1–$11.4M0.4%–––
MYNBlackRock Muniyield New York Quality Fund, Inc.COM1,174,171$11.2M0.4%+27,816+2.4%AddedHistory
MUCBlackRock Muniholdings California Quality Fund, Inc.CEF981,667$10.2M0.3%00.0%UnchangedHistory
MQTBlackRock Muniyield Quality Fund II, Inc.COM1,026,805$9.90M0.3%00.0%UnchangedHistory
TransMedics Group, Inc.89377MAB5NOTE 1.500% 6/0–$9.82M0.3%–––
MVFBlackRock Munivest Fund, Inc.COM1,320,857$8.69M0.3%−99,577−7.0%ReducedHistory
Bentley Sys Inc08265TAB5NOTE 0.125% 1/1–$8.08M0.3%–––
BFKBlackRock Municipal Income TrustSH BEN INT833,784$8.00M0.3%+175,072+26.6%AddedHistory
NRKNuveen New York Amt-Free Quality Municipal Income FundCOM797,635$7.90M0.3%00.0%UnchangedHistory
Live Nation Entertainment IN538034BA6NOTE 3.125% 1/1–$7.77M0.2%–––
MYDBlackRock Muniyield Fund, Inc.COM744,760$7.48M0.2%+186,551+33.4%AddedHistory
MIYBlackRock Muniyield Michigan Quality Fund, Inc.COM664,819$7.34M0.2%00.0%UnchangedHistory
Cloudflare, Inc.18915MAC1NOTE 8/1–$7.13M0.2%–––
MHIPioneer Municipal High Income Fund, Inc.COM SHS777,329$7.12M0.2%−4,011−0.5%ReducedHistory

Sold out since Q1 2025 (10)

Positions held at the end of Q1 2025 that are gone from this filing.

Positions of Mackay Shields LLC sold out since Q1 2025
SecurityClassShares in Q1 2025Value in Q1 2025% of portfolio in Q1 2025History
NRG Energy, Inc.629377CG5DBCV 2.750% 6/0–$77.4M2.5%–
On Semiconductor Corp682189AU9NOTE 0.500% 3/0–$48.4M1.6%–
Southwest Airls Co844741BG2NOTE 1.250% 5/0–$33.9M1.1%–
Zscaler, Inc.98980GAB8NOTE 0.125% 7/0–$32.2M1.0%–
Booking Holdings Inc.09857LAN8NOTE 0.750% 5/0–$27.9M0.9%–
Palo Alto Networks Inc697435AF2NOTE 0.375% 6/0–$27.1M0.9%–
Dexcom Inc252131AK3NOTE 0.250%11/1–$23.1M0.7%–
DHRDanaher CorpStock76,712$15.7M0.5%History
Royal Caribbean Group780153BQ4NOTE 6.000% 8/1–$14.1M0.5%–
Array Technologies, Inc.04271TAB6NOTE 1.000%12/0–$7.22M0.2%–