MacKay Shields LLC

Name: MacKay Shields LLC: Form 13F holdings for the quarter ended 2026-06-30
Creator: Listed

An institutional investment manager in New York, NY. Its Form 13F for the quarter ended Jun 30, 2026, filed Jul 28, 2026. SEC CIK 61227.

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Reported value$2.99bn
Positions108

Holdings: 108 positions

The filing on sec.gov

As filed, largest first. Reported value is what the manager stated for each position at the quarter end, in US dollars; it is filing data, not a price. Weight is the position's share of the total reported value. Changes compare with the 13F for the quarter ended 2026-03-31. The filing's table has 306 lines; lines for the same security and option type are added together here.

MacKay Shields LLC, holdings
Issuer	Class	CUSIP	Reported value$m	Weight	Shares	Change on the quarter before
Western Digital Corp	NOTE 3.000%11/1	958102AT2	151	5.1%	$8,952,000 principal	Reduced−6,524,000
Alphabet Inc	DEP SHS RP1/20 A	02079K404	123	4.1%	2,427,303	New+2,427,303
MKS Inc.	NOTE 1.250% 6/0	55306NAB0	107	3.6%	$36,470,000 principal	Reduced−40,000
Lumentum Holdings Inc	NOTE 0.500% 6/1	55024UAF6	84.1	2.8%	$12,884,000 principal	Reduced−13,902,000
Lantheus Holdings Inc	NOTE 2.625%12/1	516544AB9	74.0	2.5%	$50,863,000 principal	Reduced−35,000
Hewlett Packard Enterprise C	7.625 MAND CONV	42824C208	70.2	2.4%	601,263	Reduced−593
Cable One Inc	NOTE 1.125% 3/1	12685JAG0	58.8	2.0%	$89,888,000 principal	Added+12,529,000
QXO Inc	5.50 DEP PFD	82846H504	57.4	1.9%	1,169,488	Reduced−873
Boeing Co	DEP CONV PFD A	097023204	56.2	1.9%	828,674	Reduced−740
Tetra Tech Inc New	DBCV 2.250% 8/1	88162GAB9	55.3	1.9%	$52,445,000 principal	Reduced−2,073,000
Uber Technologies Inc	NOTE 0.875%12/0	90353TAM2	54.3	1.8%	$45,364,000 principal	Added+12,000
Snowflake Inc	NOTE 10/0	833445AB5	54.2	1.8%	$32,541,000 principal	Reduced−29,000
Chefs Whse Inc	NOTE 2.375%12/1	163086AE1	53.0	1.8%	$23,710,000 principal	Reduced−39,000
Etsy Inc	NOTE 0.125%10/0	29786AAJ5	50.9	1.7%	$49,886,000 principal	Added+17,150,000
Nextera Energy Inc	UNIT 06/01/2027	65339F663	50.5	1.7%	940,950	Added+468,014
PG&E Corp	NOTE 4.250%12/0	69331CAL2	47.5	1.6%	$46,453,000 principal	Added+69,000
Microchip Technology Inc.	DEP SHS REPSTG	595017302	46.5	1.6%	603,491	Added+2,444
Blackrock Mun Target Term TRBTT	COM SHS BEN IN	09257P105	44.8	1.5%	1,967,980	Added+401,718
Integer Holdings Corp	DBCV 1.875% 3/1	45826HAD1	43.9	1.5%	$45,243,000 principal	Added+84,000
Apollo Global MGMT Inc	SER A MAND CNV	03769M304	43.5	1.5%	713,153	Reduced−656
Liberty Media Corp Del	NOTE 2.250% 8/1	531229AQ5	42.1	1.4%	$33,894,000 principal	Reduced−78,000
Post Holdings Inc	NOTE 2.500% 8/1	737446AT1	41.7	1.4%	$40,161,000 principal	Reduced−67,000
Merit Med Sys Inc	NOTE 3.000% 2/0	589889AB0	41.1	1.4%	$38,073,000 principal	New+38,073,000
Akamai Technologies Inc	NOTE 0.375% 9/0	00971TAL5	40.8	1.4%	$34,024,000 principal	Added+205,000
On Semiconductor Corp	NOTE 5/0	682189AS4	40.0	1.3%	$21,949,000 principal	Reduced−17,222,000
Nine Energy Service IncNINE	COMMON STOCK	65441V200	39.2	1.3%	3,011,565	Reduced−54,869
Datadog Inc	NOTE 12/0	23804LAD5	39.1	1.3%	$27,438,000 principal	Reduced−6,364,000
Revolution Medicines Inc	NOTE 0.500% 5/0	76155XAA8	38.1	1.3%	$30,344,000 principal	New+30,344,000
Freshpet Inc	NOTE 3.000% 4/0	358039AB1	37.0	1.2%	$31,800,000 principal	Added+9,000
Bridgebio Pharma Inc	NOTE 2.250% 2/0	10806XAD4	36.9	1.2%	$33,259,000 principal	Reduced−56,000
Irhythm Holdings Inc	NOTE 1.500% 9/0	450056AB2	35.9	1.2%	$32,598,000 principal	Reduced−33,000
Live Nation Entertainment in	NOTE 2.875% 1/1	538034BC2	35.6	1.2%	$29,737,000 principal	Unchanged
Peloton Interactive Inc	NOTE 5.500%12/0	70614WAD2	34.9	1.2%	$21,499,000 principal	Added+2,082,000
Fluor Corp	NOTE 1.125% 8/1	343412AJ1	34.7	1.2%	$26,167,000 principal	Reduced−145,000
Jazz Investments I Ltd	NOTE 3.125% 9/1	472145AH4	34.7	1.2%	$20,318,000 principal	New+20,318,000
Northern Oil & Gas Inc	NOTE 3.625% 4/1	665531AJ8	31.9	1.1%	$33,241,000 principal	Reduced−55,000
Affirm Holdings Inc	NOTE 0.750%12/1	00827BAD8	31.7	1.1%	$27,113,000 principal	Reduced−37,000
Cyberark Software Ltd	NOTE 6/1	23248VAD7	31.6	1.1%	$19,004,000 principal	New+19,004,000
Cloudflare Inc	NOTE 6/1	18915MAF4	31.5	1.1%	$24,872,000 principal	New+24,872,000
Unity Software Inc	NOTE 3/1	91332UAH4	30.5	1.0%	$26,904,000 principal	Added+2,000
Oracle Corp	6.5 DEP CUM SR D	68389X204	29.1	1.0%	645,801	Reduced−1,045
Meritage Homes Corp	NOTE 1.750% 5/1	59001ABF8	29.0	1.0%	$28,031,000 principal	Reduced−94,000
Patrick Inds Inc	NOTE 1.750%12/0	703343AG8	28.3	0.9%	$19,118,000 principal	Reduced−18,000
Liberty Media Corp Del	NOTE 3.750% 3/1	531229AP7	28.1	0.9%	$24,458,000 principal	Unchanged
Burlington Stores Inc	NOTE 1.250%12/1	122017AD8	28.0	0.9%	$17,529,000 principal	Reduced−2,850,000
Progress Software Corp	NOTE 3.500% 3/0	743312AD2	27.5	0.9%	$28,590,000 principal	Reduced−103,000
Bank of Amer Corp	7.25%CNV PFD L	060505682	26.1	0.9%	20,806	Reduced−61
Parsons Corp Del	NOTE 2.625% 3/0	70202LAD4	25.8	0.9%	$26,167,000 principal	Added+34,000
Biomarin Pharmaceutical Inc	NOTE 1.250% 5/1	09061GAK7	25.7	0.9%	$26,434,000 principal	Reduced−68,000
Ishares Gold TRIAU	ISHARES NEW	464285204	24.8	0.8%	328,020	Reduced−62,130
Dropbox Inc	NOTE 3/0	26210CAD6	24.6	0.8%	$24,323,000 principal	Unchanged
Arrowhead Pharmaceuticals in	NOTE 1/1	04280AAC4	24.5	0.8%	$20,457,000 principal	Added+17,457,000
Doordash Inc	NOTE 5/1	25809KAB1	24.4	0.8%	$24,710,000 principal	New+24,710,000
Synaptics Inc	NOTE 0.750%12/0	87157DAJ8	24.0	0.8%	$16,169,000 principal	Unchanged
Guidewire Software Inc	NOTE 1.250%11/0	40171VAC4	24.0	0.8%	$24,911,000 principal	Reduced−236,000
Blackrock Muniyield N Y QualMYN	COM	09255E102	23.8	0.8%	2,349,687	Unchanged
Blackrock Muniholdings FD inMHD	COM	09253N104	23.6	0.8%	1,982,355	Unchanged
Rivian Automotive Inc	NOTE 4.625% 3/1	76954AAB9	22.1	0.7%	$18,580,000 principal	Reduced−7,000
Greenbrier Cos Inc	NOTE 2.875% 4/1	393657AM3	21.8	0.7%	$19,032,000 principal	Unchanged
Dexcom Inc	NOTE 0.375% 5/1	252131AM9	20.9	0.7%	$22,415,000 principal	Reduced−7,555,000
Upstart Holdings Inc	NOTE 1.000%11/1	91680MAF4	20.6	0.7%	$25,168,000 principal	Unchanged
Blackrock Muniyild Qult FD IMQY	COM	09254F100	18.5	0.6%	1,594,019	Unchanged
SHIFT4 PMTS Inc	NOTE 0.500% 8/0	82452JAD1	18.3	0.6%	$19,157,000 principal	Reduced−375,000
Ares Management Corporation	6.75 SE B PFD	03990B309	18.1	0.6%	479,735	Reduced−299
Alnylam Pharmaceuticals Inc	NOTE 1.000% 9/1	02043QAB3	17.9	0.6%	$14,834,000 principal	Reduced−10,000
Wells Fargo & Co	PERP PFD CNV A	949746804	17.1	0.6%	14,748	Reduced−12
Gulfport Energy CorpGPOR	COMMON SHARES	402635502	16.5	0.6%	97,512	Reduced−1,080
Nutanix Inc	NOTE 0.500%12/1	67059NAK4	16.3	0.5%	$16,565,000 principal	Reduced−13,080,000
Workiva Inc	NOTE 1.250% 8/1	98139AAD7	15.5	0.5%	$16,585,000 principal	Reduced−265,000
Rubrik Inc.	NOTE 6/1	781154AD1	15.2	0.5%	$14,825,000 principal	New+14,825,000
Talos Energy IncTALO	COM	87484T108	15.0	0.5%	1,163,908	Reduced−165,189
MGP Ingredients Inc New	NOTE 1.875%11/1	55303JAB2	13.9	0.5%	$14,243,000 principal	Reduced−44,000
Advanced Energy Inds	NOTE 2.500% 9/1	007973AE0	13.2	0.4%	$4,843,000 principal	Reduced−34,801,000
Bill Holdings Inc	NOTE 4/0	090043AF7	13.1	0.4%	$15,102,000 principal	Unchanged
Alphabet Inc	DEP SHS RP1/20 B	02079K602	12.6	0.4%	250,000	New+250,000
Global PMTS Inc	NOTE 1.500% 3/0	37940XAU6	11.6	0.4%	$12,879,000 principal	Unchanged
Nextera Energy Inc	UNIT 02/15/2029	65339F655	11.0	0.4%	228,903	New+228,903
Blackrock Munihldgs NJ QltyMUJ	COM	09254X101	10.9	0.4%	881,952	Reduced−265,980
Warner Bros Discovery Inc	COM SER A	934423104	9.5	0.3%	358,060	Added+131,810
LIFE360 Inc	NOTE 6/0	532206AC3	9.2	0.3%	$8,870,000 principal	New+8,870,000
Guardant Health Inc	NOTE 11/1	40131MAB5	8.9	0.3%	$7,179,000 principal	New+7,179,000
Live Nation Entertainment in	NOTE 3.125% 1/1	538034BA6	8.3	0.3%	$4,676,000 principal	Reduced−50,000
Spectrum Brands Inc	NOTE 3.375% 6/0	84762LAZ8	8.2	0.3%	$7,857,000 principal	Unchanged
Vertex Inc	NOTE 0.750% 5/0	92538JAB2	8.2	0.3%	$9,152,000 principal	Reduced−33,000
Teladoc Health Inc	NOTE 1.250% 6/0	87918AAF2	7.3	0.2%	$7,505,000 principal	Unchanged
Cloudflare Inc	NOTE 8/1	18915MAC1	7.2	0.2%	$5,637,000 principal	Reduced−43,000
Mirum Pharmaceuticals Inc	NOTE 4.000% 5/0	604749AB7	7.2	0.2%	$1,947,000 principal	Reduced−21,107,000
WEC Energy Group Inc	NOTE 4.375% 6/0	92939UAR7	6.4	0.2%	$5,162,000 principal	Reduced−104,000
Southern Co	NOTE 4.500% 6/1	842587DZ7	6.1	0.2%	$5,569,000 principal	Reduced−71,000
Halozyme Therapeutics Inc	NOTE 0.250% 3/0	40637HAD1	6.0	0.2%	$5,407,000 principal	Reduced−9,000
OSI Systems Inc	NOTE 2.250% 8/0	671044AF2	6.0	0.2%	$4,485,000 principal	Reduced−40,000
Blackrock Muniyield Mich QuMIY	COM	09254V105	5.9	0.2%	479,747	Reduced−179,222
SPDR Gold TRGLD	GOLD SHS	78463V107	5.6	0.2%	15,336	Unchanged
FIVE9 Inc	NOTE 1.000% 3/1	338307AF8	5.5	0.2%	$6,155,000 principal	Reduced−110,000
Nutanix Inc	NOTE 0.250%10/0	67059NAH1	5.2	0.2%	$4,582,000 principal	Reduced−22,000
Blackrock Muniyield QualityMYI	COM	09254E103	4.9	0.2%	439,004	Reduced−87,252
Southern Co	NOTE 3.250% 6/1	842587ED5	4.9	0.2%	$4,815,000 principal	New+4,815,000
Integer Holdings Corp	NOTE 2.125% 2/1	45826HAB5	4.6	0.2%	$3,756,000 principal	Reduced−89,000
Abrdn Natl Mun Income FD	SH BEN INT	24610T108	4.2	0.1%	401,695	Unchanged
Ionis Pharmaceuticals Inc	NOTE 1.750% 6/1	462222AF7	3.8	0.1%	$2,414,000 principal	Reduced−7,996,000
Aberdeen Mun Income FDMFM	SH BEN INT	552738106	1.9	<0.1%	333,822	Added+667
Blackrock Munihldngs CaliMUC	COM	09254L107	1.4	<0.1%	128,815	Reduced−18,025
Eaton Vance Mun BD FDEIM	COM	27827X101	1.3	<0.1%	125,764	Unchanged
PPL Cap FDG Inc	NOTE 2.875% 3/1	69352PAS2	0.6	<0.1%	$500,000 principal	Unchanged
New York Life Invts Active E	MACKAY SECURITI	45409F686	0.3	<0.1%	11,504	Unchanged
Blackline Inc	NOTE 1.000% 6/0	09239BAF6	0.3	<0.1%	$295,000 principal	Reduced−340,000
WW International IncWW	COM NEW	98262P200	0.2	<0.1%	14,371	Unchanged
Chegg Inc	NOTE 9/0	163092AF6	0.0	<0.1%	$45,000 principal	Unchanged

Sold out: 16 positions

Held at the end of the quarter before and not reported this quarter.

MacKay Shields LLC, positions sold out
Issuer	Class	CUSIP	Weight	Shares	Change on the quarter before
Aerovironment Inc	NOTE 7/1	008073AA6	0.0%	$0 principal	Sold out−13,220,000
Cheesecake Factory Inc	NOTE 0.375% 6/1	163072AA9	0.0%	$0 principal	Sold out−15,388,000
Duke Energy Corp New	NOTE 4.125% 4/1	26441CBY0	0.0%	$0 principal	Sold out−500,000
Invesco Advantage Mun IncomeVKI	SH BEN INT	46132E103	0.0%	0	Sold out−45,320
Invesco Municipal TrustVKQ	COM	46131J103	0.0%	0	Sold out−208,814
Invesco Mun Opportunit TRVMO	COM	46132C107	0.0%	0	Sold out−126,255
Invesco TR Invt Grade MunsVGM	COM	46131M106	0.0%	0	Sold out−209,167
Jazz Investments I Ltd	NOTE 2.000% 6/1	472145AF8	0.0%	$0 principal	Sold out−13,087,000
Lumentum Holdings Inc	NOTE 0.500%12/1	55024UAD1	0.0%	$0 principal	Sold out−2,200,000
NCL Corp Ltd	NOTE 1.125% 2/1	62886HBD2	0.0%	$0 principal	Sold out−38,891,000
Neuberger Mun FD IncNBH	COM	64124P101	0.0%	0	Sold out−623,277
Nuveen Mun CR Income FDNZF	COM SH BEN INT	67070X101	0.0%	0	Sold out−55,659
Nuveen Ny Amt FreeNRK	COM	670656107	0.0%	0	Sold out−519,880
Nuveen Pa Invt Quality Mun F	COM	670972108	0.0%	0	Sold out−117,934
Q2 Holdings Inc	NOTE 0.750% 6/0	74736LAD1	0.0%	$0 principal	Sold out−13,281,000
Seagate HDD Cayman	NOTE 3.500% 6/0	81180WBL4	0.0%	$0 principal	Sold out−6,638,000

Source: SEC EDGAR, Form 13F-HR, accession 0000061227-26-000002 (on sec.gov). Last ingested by Listed: Oct 22, 2026, 05:26 ET. Listed shows no prices and gives no investment advice.