MACKAY SHIELDS LLC
13F Reported Value
ⓘ$3.0B
Holdings
108
Latest Filing
2026-06-30
Filing Quarter
Q2 2026
Portfolio Overview
MACKAY SHIELDS LLC disclosed 108 positions worth $3.0B in its Form 13F-HR for Q2 2026, led by $WDC (WESTERN DIGITAL CORP) at 5.0% of the equity portfolio, followed by $GOOG and $MKSI. During the quarter the fund opened 12 new positions and exited 15 — including a new stake in $GOOG. The portfolio is most concentrated in Technology (31.8% of disclosed assets). All figures are sourced directly from MACKAY SHIELDS LLC’s Form 13F-HR filing with the SEC under CIK 61227.
AI Fund Analysis
Stable
$WDC
$MKSI
$LITE
$LNTH
$CABO
$UBER
$ETSY
$NEE
$PCGSector Allocation
AUM History
Top Equity Holdings by Value
Quarterly Activity — Q2 2026
Click any card to unlockTop Holdings
- 80.7#24
Quality
$150.8M8,952,000 sh - 78.2#57
Quality
$122.6M2,427,303 sh - 61.2#799
Quality
$107.5M36,470,000 sh - 44.3
Quality
$84.1M12,884,000 sh - 61.1
Quality
$74.0M50,863,000 sh HEWLETT PACKARD ENTERPRISE C - 7.625 MAND CONV
—Quality
$70.2M601,263 sh- 32.2
Quality
$58.8M89,888,000 sh - 49.0
Quality
$57.4M1,169,488 sh - 61.6
Quality
$56.2M828,674 sh TETRA TECH INC NEW - DBCV 2.250% 8/1
—Quality
$55.3M52,445,000 sh
| Company | Quality | Value | Shares |
|---|---|---|---|
| WESTERN DIGITAL CORP$WDC | 80.7#24 | $150.8M | 8,952,000 |
 Alphabet Inc.$GOOG | 78.2#57 | $122.6M | 2,427,303 |
| MKS INC$MKSI | 61.2#799 | $107.5M | 36,470,000 |
| Lumentum Holdings Inc.$LITE | 44.3 | $84.1M | 12,884,000 |
| Lantheus Holdings, Inc.$LNTH | 61.1 | $74.0M | 50,863,000 |
| HEWLETT PACKARD ENTERPRISE C - 7.625 MAND CONV | — | $70.2M | 601,263 |
| Cable One, Inc.$CABO | 32.2 | $58.8M | 89,888,000 |
 QXO, Inc.$QXO | 49.0 | $57.4M | 1,169,488 |
 BOEING CO$BA | 61.6 | $56.2M | 828,674 |
| TETRA TECH INC NEW - DBCV 2.250% 8/1 | — | $55.3M | 52,445,000 |
Unlock AI quality scores for every holding
32-signal composite ranking on each of MACKAY SHIELDS LLC's 108 positions.
Showing top 10 of 108 holdings.
Sector Allocation
Technology
$948.0M
Other
$653.5M
Healthcare
$287.2M
Industrials
$269.8M
Financials
$187.6M
Communication Services
$154.3M
Consumer Staples
$145.5M
Consumer Discretionary
$120.5M
Full Holdings — MACKAY SHIELDS LLC (Q2 2026)
All 108 disclosed positions from the latest Form 13F-HR, with quarter-over-quarter share changes and 13F Pro quality scores. Sourced from SEC EDGAR.
| # | Ticker | Company | Value | Weight | QoQ | Quality |
|---|---|---|---|---|---|---|
| 1 | $WDC | WESTERN DIGITAL CORP | $150.8M | 5.0% | -42% | 80.7 |
| 2 | $GOOG | Alphabet Inc. | $122.6M | 4.1% | NEW | 78.2 |
| 3 | $MKSI | MKS INC | $107.5M | 3.6% | -0% | 61.2 |
| 4 | $LITE | Lumentum Holdings Inc. | $84.1M | 2.8% | -52% | 44.3 |
| 5 | $LNTH | Lantheus Holdings, Inc. | $74.0M | 2.5% | -0% | 61.1 |
| 6 | — | HEWLETT PACKARD ENTERPRISE C - 7.625 MAND CONV | $70.2M | 2.4% | -0% | — |
| 7 | $CABO | Cable One, Inc. | $58.8M | 2.0% | +16% | 32.2 |
| 8 | $QXO | QXO, Inc. | $57.4M | 1.9% | -0% | 49 |
| 9 | $BA | BOEING CO | $56.2M | 1.9% | -0% | 61.6 |
| 10 | — | TETRA TECH INC NEW - DBCV 2.250% 8/1 | $55.3M | 1.9% | -4% | — |
| 11 | $UBER | Uber Technologies, Inc | $54.3M | 1.8% | +0% | 73.5 |
| 12 |  $SNOW | Snowflake Inc. | $54.2M | 1.8% | -0% | 54.9 |
| 13 |  $CHEF | Chefs' Warehouse, Inc. | $53.0M | 1.8% | -0% | 54.7 |
| 14 | $ETSY | ETSY INC | $50.9M | 1.7% | +52% | 61.2 |
| 15 | $NEE | NEXTERA ENERGY INC | $50.5M | 1.7% | +99% | 64.6 |
| 16 | $PCG | PG&E Corp | $47.5M | 1.6% | +0% | 58.8 |
| 17 |  $MCHP | MICROCHIP TECHNOLOGY INC | $46.5M | 1.6% | +0% | 52.9 |
| 18 |  $BTT | BlackRock Municipal 2030 Target Term Trust | $44.8M | 1.5% | +26% | — |
| 19 | — | INTEGER HLDGS CORP - DBCV 1.875% 3/1 | $43.9M | 1.5% | +0% | — |
| 20 |  $APO | Apollo Global Management, Inc. | $43.5M | 1.5% | -0% | 52.1 |
| 21 |  $FWONA | Liberty Media Corp | $42.1M | 1.4% | -0% | 63.2 |
| 22 |  $POST | Post Holdings, Inc. | $41.7M | 1.4% | -0% | 52.5 |
| 23 | — | MERIT MED SYS INC - NOTE 3.000% 2/0 | $41.1M | 1.4% | NEW | — |
| 24 |  $AKAM | AKAMAI TECHNOLOGIES INC | $40.8M | 1.4% | +1% | 59.5 |
| 25 |  $ON | ON SEMICONDUCTOR CORP | $40.0M | 1.3% | -44% | 55 |
| 26 |  $NINE | Nine Energy Service, Inc. | $39.2M | 1.3% | -2% | 24.1 |
| 27 |  $DDOG | Datadog, Inc. | $39.1M | 1.3% | -19% | 71.4 |
| 28 |  $RVMD | Revolution Medicines, Inc. | $38.1M | 1.3% | NEW | — |
| 29 |  $FRPT | Freshpet, Inc. | $37.0M | 1.2% | +0% | 61.1 |
| 30 |  $BBIO | BridgeBio Pharma, Inc. | $36.9M | 1.2% | -0% | 36.9 |
| 31 |  $IRTC | iRhythm Holdings, Inc. | $35.9M | 1.2% | -0% | 54.8 |
| 32 |  $LYV | Live Nation Entertainment, Inc. | $35.6M | 1.2% | +0% | 52.9 |
| 33 |  $PTON | PELOTON INTERACTIVE, INC. | $34.9M | 1.2% | +11% | 54.3 |
| 34 |  $FLR | FLUOR CORP | $34.7M | 1.2% | -1% | 47.6 |
| 35 | — | JAZZ INVESTMENTS I LTD - NOTE 3.125% 9/1 | $34.7M | 1.2% | NEW | — |
| 36 |  $NOG | NORTHERN OIL & GAS, INC. | $31.9M | 1.1% | -0% | 48 |
| 37 |  $AFRM | Affirm Holdings, Inc. | $31.7M | 1.1% | -0% | 81.3 |
| 38 | — | CYBERARK SOFTWARE LTD - NOTE 6/1 | $31.6M | 1.1% | NEW | — |
| 39 | — | CLOUDFLARE INC - NOTE 6/1 | $31.5M | 1.1% | NEW | — |
| 40 | — | UNITY SOFTWARE INC - NOTE 3/1 | $30.5M | 1.0% | +0% | — |
| 41 | — | ORACLE CORP - 6.5 DEP CUM SR D | $29.1M | 1.0% | -0% | — |
| 42 |  $MTH | Meritage Homes CORP | $29.0M | 1.0% | -0% | — |
| 43 |  $PATK | PATRICK INDUSTRIES INC | $28.3M | 0.9% | -0% | 51.4 |
| 44 | — | LIBERTY MEDIA CORP DEL - NOTE 3.750% 3/1 | $28.1M | 0.9% | +0% | — |
| 45 |  $BURL | Burlington Stores, Inc. | $28.0M | 0.9% | -14% | 65.2 |
| 46 |  $PRGS | PROGRESS SOFTWARE CORP /MA | $27.5M | 0.9% | -0% | 66.2 |
| 47 |  $BAC | BANK OF AMERICA CORP /DE/ | $26.1M | 0.9% | -0% | 67.6 |
| 48 |  $PSN | PARSONS CORP | $25.8M | 0.9% | +0% | 54.6 |
| 49 |  $BMRN | BIOMARIN PHARMACEUTICAL INC | $25.7M | 0.9% | -0% | 58.2 |
| 50 |  $IAU | ISHARES GOLD TRUST | $24.8M | 0.8% | -16% | — |
| 51 |  $DBX | DROPBOX, INC. | $24.6M | 0.8% | +0% | 63.4 |
| 52 | — | ARROWHEAD PHARMACEUTICALS IN - NOTE 1/1 | $24.5M | 0.8% | +582% | — |
| 53 | — | DOORDASH INC - NOTE 5/1 | $24.4M | 0.8% | NEW | — |
| 54 |  $SYNA | SYNAPTICS Inc | $24.0M | 0.8% | +0% | 36.6 |
| 55 |  $GWRE | Guidewire Software, Inc. | $24.0M | 0.8% | -1% | 67.3 |
| 56 |  $MYN | BLACKROCK MUNIYIELD NEW YORK QUALITY FUND, INC. | $23.8M | 0.8% | +0% | — |
| 57 |  $MHD | BLACKROCK MUNIHOLDINGS FUND, INC. | $23.6M | 0.8% | +0% | — |
| 58 | — | RIVIAN AUTOMOTIVE INC - NOTE 4.625% 3/1 | $22.1M | 0.7% | -0% | — |
| 59 | — | GREENBRIER COS INC - NOTE 2.875% 4/1 | $21.8M | 0.7% | +0% | — |
| 60 |  $DXCM | DEXCOM INC | $20.9M | 0.7% | -25% | 76 |
| 61 |  $UPST | Upstart Holdings, Inc. | $20.6M | 0.7% | +0% | 61.7 |
| 62 |  $MQY | BLACKROCK MUNIYIELD QUALITY FUND, INC. | $18.5M | 0.6% | +0% | — |
| 63 |  $FOUR | Shift4 Payments, Inc. | $18.3M | 0.6% | -2% | 62.5 |
| 64 |  $ARES | Ares Management Corp | $18.1M | 0.6% | -0% | 60.9 |
| 65 |  $ALNY | ALNYLAM PHARMACEUTICALS, INC. | $17.9M | 0.6% | -0% | 71.4 |
| 66 |  $WFC | WELLS FARGO & COMPANY/MN | $17.1M | 0.6% | -0% | 61.8 |
| 67 |  $GPOR | GULFPORT ENERGY CORP | $16.5M | 0.6% | -1% | 72.4 |
| 68 |  $NTNX | Nutanix, Inc. | $16.3M | 0.6% | -44% | 70.2 |
| 69 |  $WK | WORKIVA INC | $15.5M | 0.5% | -2% | 65.4 |
| 70 |  $RBRK | Rubrik, Inc. | $15.2M | 0.5% | NEW | 56.6 |
| 71 |  $TALO | TALOS ENERGY INC. | $15.0M | 0.5% | -12% | 47.7 |
| 72 |  $MGPI | MGP INGREDIENTS INC | $13.9M | 0.5% | -0% | 24 |
| 73 |  $AEIS | ADVANCED ENERGY INDUSTRIES INC | $13.2M | 0.4% | -88% | 61.7 |
| 74 |  $BILL | BILL Holdings, Inc. | $13.1M | 0.4% | +0% | 56 |
| 75 | — | ALPHABET INC - DEP SHS RP1/20 B | $12.6M | 0.4% | NEW | — |
| 76 |  $GPN | GLOBAL PAYMENTS INC | $11.6M | 0.4% | +0% | 47 |
| 77 | — | NEXTERA ENERGY INC - UNIT 02/15/2029 | $11.0M | 0.4% | NEW | — |
| 78 |  $MUJ | BLACKROCK MUNIHOLDINGS NEW JERSEY QUALITY FUND, INC. | $10.9M | 0.4% | -23% | — |
| 79 |  $WBD | Warner Bros. Discovery, Inc. | $9.5M | 0.3% | +58% | 41.4 |
| 80 |  $LIF | Life360, Inc. | $9.2M | 0.3% | NEW | 69.8 |
| 81 |  $GH | Guardant Health, Inc. | $8.9M | 0.3% | NEW | 39 |
| 82 | $LYV | Live Nation Entertainment, Inc. | $8.3M | 0.3% | -1% | 52.9 |
| 83 |  $SPB | Spectrum Brands Holdings, Inc. | $8.2M | 0.3% | +0% | 48.7 |
| 84 |  $VERX | Vertex, Inc. | $8.2M | 0.3% | -0% | 57.5 |
| 85 |  $TDOC | Teladoc Health, Inc. | $7.3M | 0.3% | +0% | 40.8 |
| 86 |  $NET | Cloudflare, Inc. | $7.2M | 0.2% | -1% | 56.4 |
| 87 |  $MIRM | Mirum Pharmaceuticals, Inc. | $7.2M | 0.2% | -92% | 35 |
| 88 |  $WEC | WEC ENERGY GROUP, INC. | $6.4M | 0.2% | -2% | 60.1 |
| 89 |  $SO | SOUTHERN CO | $6.1M | 0.2% | -1% | 62 |
| 90 |  $HALO | HALOZYME THERAPEUTICS, INC. | $6.0M | 0.2% | -0% | 77.2 |
| 91 |  $OSIS | OSI SYSTEMS INC | $6.0M | 0.2% | -1% | 59.2 |
| 92 |  $MIY | BLACKROCK MUNIYIELD MICHIGAN QUALITY FUND, INC. | $5.9M | 0.2% | -27% | — |
| 93 |  $GLD | SPDR GOLD TRUST | $5.6M | 0.2% | +0% | — |
| 94 |  $FIVN | Five9, Inc. | $5.5M | 0.2% | -2% | 59.7 |
| 95 | $NTNX | Nutanix, Inc. | $5.2M | 0.2% | -0% | 70.2 |
| 96 |  $MYI | BLACKROCK MUNIYIELD QUALITY FUND III, INC. | $4.9M | 0.2% | -17% | — |
| 97 | $SO | SOUTHERN CO | $4.9M | 0.2% | NEW | 62 |
| 98 |  $ITGR | Integer Holdings Corp | $4.6M | 0.1% | -2% | 55.9 |
| 99 |  $VFL | abrdn National Municipal Income Fund | $4.2M | 0.1% | +0% | — |
| 100 |  $IONS | IONIS PHARMACEUTICALS INC | $3.8M | 0.1% | -77% | 23.4 |
| 101 |  $MFM | ABERDEEN MUNICIPAL INCOME FUND | $1.9M | 0.1% | +0% | — |
| 102 |  $MUC | BLACKROCK MUNIHOLDINGS CALIFORNIA QUALITY FUND, INC. | $1.4M | 0.1% | -12% | — |
| 103 |  $EIM | Eaton Vance Municipal Bond Fund | $1.3M | 0.0% | +0% | — |
| 104 |  $PPL | PPL Corp | $568,125 | 0.0% | +0% | 55.7 |
| 105 | — | NEW YORK LIFE INVTS ACTIVE E - MACKAY SECURITI | $291,954 | 0.0% | +0% | — |
| 106 |  $BL | BLACKLINE, INC. | $272,285 | 0.0% | -54% | 52.7 |
| 107 |  $WW | WW INTERNATIONAL, INC. | $229,649 | 0.0% | +0% | 27.4 |
| 108 |  $CHGG | CHEGG, INC | $43,034 | 0.0% | +0% | 21.5 |
New Positions (12)
$GOOG Alphabet Inc.$122.6M$RVMD Revolution Medicines, Inc.$38.1M$RBRK Rubrik, Inc.$15.2M$LIF Life360, Inc.$9.2M$GH Guardant Health, Inc.$8.9MExited Positions (15)
$CAKE CHEESECAKE FACTORY INC
$QTWO Q2 Holdings, Inc.
$AVAV AeroVironment Inc
$NBH NEUBERGER MUNICIPAL FUND INC.
$NRK NUVEEN NEW YORK AMT-FREE QUALITY MUNICIPAL INCOME FUND
$VGM Invesco Trust for Investment Grade Municipals
$VKQ Invesco Municipal Trust
$VMO Invesco Municipal Opportunity Trust
$NZF Nuveen Municipal Credit Income Fund
$DUK Duke Energy CORP
$VKI Invesco Advantage Municipal Income Trust IIBrowse Top Institutional Investors
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