What is SEC Form 13F? Ultimate Guide to Institutional Equity Filings
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CIK: 0000061227
Total reported value
$3.0B
$3.0B
111 檔
16.2%
During the Q1 2026 filing period, Mackay Shields LLC (CIK: 0000061227) submitted its Form 13F report to the U.S. SEC, disclosing a tracked public equity portfolio valued at $3.0B across 111 reported positions.
In Q1 2026, Mackay Shields LLC adopted a defensive or profit-taking posture, trimming 55 positions and completely liquidating 28 holdings to manage risk exposure.
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | LITE 0.5 06-15-28Bond | Lumentum Holdings Inc | Bond | 5.26% | -2.44% | -10.82% | |
| 2 | WDC 3 11-15-28Bond | Western Digital CORP | Bond | 4.06% | +0.99% | -18.04% | |
| 3 | AEIS 2.5 09-15-28Bond | Advanced Energy Ind | Bond | 3.50% | -3.06% | -11.19% | |
| 4 | MIRM 4 05-01-29Bond | Mirum Pharmaceuticals | Bond | 2.53% | -2.29% | -9.71% | |
| 5 | QXO 5.5 05-15-28Bond | Qxo Inc | Bond | 2.39% | -0.47% | -0.07% | |
| 6 | LNTH 2.625 12-15-27Bond | Lantheus Holdings Inc | Bond | 2.24% | +0.24% | -10.26% | |
| 7 | MKSI 1.25 06-01-30Bond | Mks Inc | Bond | 2.21% | +1.39% | -0.10% | |
| 8 | CABO 1.125 03-15-28Bond | Cable One Inc | Bond | 2.14% | -0.17% | +11.47% | |
| 9 | TTEK 2.25 08-15-28Bond | Tetra Tech Inc | Bond | 2.10% | -0.25% | -8.56% | |
| 10 | UBER 0.875 12-01-28 2028Bond | Uber Technologies Inc | Bond | 2.00% | -0.18% | +6.35% | |
| 11 | BA 6 10-15-27Bond | Boeing Co/the | Bond | 1.98% | -0.10% | -0.08% | |
| 12 | ON 0 05-01-27Bond | On Semiconductor CORP | Bond | 1.86% | -0.52% | -0.53% | |
| 13 | PCG 4.25 12-01-27Bond | Pg&e CORP | Bond | 1.76% | -0.17% | -9.85% | |
| 14 | POST 2.5 08-15-27Bond | Post Holdings Inc | Bond | 1.60% | -0.20% | -18.75% | |
| 15 | ITGR 1.875 03-15-30Bond | Integer Holdings CORP | Bond | 1.59% | -0.12% | — | |
| 16 | APO 6.75 07-31-26Bond | Apollo Global Management | Bond | 1.54% | -0.08% | -0.07% | |
| 17 | FWONK 2.25 08-15-27Bond | Liberty Media CORP | Bond | 1.44% | -0.03% | -0.19% | |
| 18 | AKAM 0.375 09-01-27Bond | Akamai Technologies Inc | Bond | 1.44% | -0.07% | -0.12% | |
| 19 | HPE 7.625 09-01-27Bond | Hp Enterprise Co | Bond | 1.43% | +0.92% | +0.67% | |
| 20 | SNOW 0 10-01-27Bond | Snowflake Inc | Bond | 1.41% | +0.40% | +9.10% | |
| 21 | NCLH 1.125 02-15-27Bond | Ncl Corporation LTD | Bond | 1.39% | -1.39% | EXIT | |
| 22 | BBIO 2.25 02-01-29Bond | Bridgebio Pharma Inc | Bond | 1.37% | -0.13% | +16.17% | |
| 23 | NOG 3.625 04-15-29Bond | Northern Oil & Gas Inc | Bond | 1.34% | -0.27% | +10.90% | |
| 24 | FRPT 3 04-01-28Bond | Freshpet Inc | Bond | 1.34% | -0.10% | +48.92% | |
| 25 | IRTC 1.5 09-01-29Bond | Irhythm Holdings Inc | Bond | 1.31% | -0.11% | -0.16% | |
| 26 | BTT | Blackrock 2030 Muni Trgt Trm | Stock-Other | 1.30% | +0.20% | +14.82% | |
| 27 | CHEF 2.375 12-15-28Bond | Chefs' Warehouse THE | Bond | 1.29% | +0.49% | -0.15% | |
| 28 | IAU | Ishares Gold Trust | ETF-Commodities | 1.26% | -0.43% | -17.86% | |
| 29 | MCHP 7.5 03-15-28Bond | Microchip Technology Inc | Bond | 1.26% | +0.30% | -0.07% | |
| 30 | BURL 1.25 12-15-27Bond | Burlington Stores Inc | Bond | 1.24% | -0.30% | — | |
| 31 | PATK 1.75 12-01-28Bond | Patrick Industries Inc | Bond | 1.22% | -0.27% | -9.51% | |
| 32 | DDOG 0 12-01-29Bond | Datadog Inc | Bond | 1.20% | +0.11% | — | |
| 33 | FLR 1.125 08-15-29Bond | Fluor CORP | Bond | 1.19% | -0.03% | +0.05% | |
| 34 | LYV 2.875 01-15-30Bond | Live Nation Entertainmen | Bond | 1.18% | +0.01% | +0.18% | |
| 35 | ETSY 0.125 10-01-26Bond | Etsy Inc | Bond | 1.17% | +0.53% | -11.63% | |
| 36 | STX 3.5 06-01-28Bond | Seagate Hdd Cayman | Bond | 1.16% | -1.16% | EXIT | |
| 37 | ORCL 6.5 01-15-29 DBond | Oracle CORP | Bond | 1.09% | -0.11% | — | |
| 38 | DXCM 0.375 05-15-28Bond | Dexcom Inc | Bond | 1.01% | -0.31% | -18.81% | |
| 39 | MTH 1.75 05-15-28Bond | Meritage Homes CORP | Bond | 1.00% | -0.03% | -22.67% | |
| 40 | U 0 03-15-30Bond | Unity Software Inc | Bond | 0.98% | +0.04% | — | |
| 41 | NTNX 0.5 12-15-29Bond | Nutanix Inc | Bond | 0.98% | -0.43% | +0.12% | |
| 42 | NEE 7.299 06-01-27Bond | Nextera Energy Inc | Bond | 0.98% | +0.71% | +2.07% | |
| 43 | PTON 5.5 12-01-29Bond | Peloton Interactive Inc | Bond | 0.95% | +0.22% | — | |
| 44 | PSN 2.625 03-01-29Bond | Parsons CORP | Bond | 0.95% | -0.09% | — | |
| 45 | BMRN 1.25 05-15-27Bond | Biomarin Pharmaceutical | Bond | 0.94% | -0.08% | -23.53% | |
| 46 | PRGS 3.5 03-01-30Bond | Progress Software CORP | Bond | 0.94% | -0.02% | +0.18% | |
| 47 | SIRI 3.75 03-15-28Bond | Sirius Xm Holdings | Bond | 0.93% | +0.01% | -17.30% | |
| 48 | AFRM 0.75 12-15-29Bond | Affirm Holdings Inc | Bond | 0.93% | +0.13% | +11.92% | |
| 49 | NINE | Nine Energy Service Inc | Stock-Other | 0.92% | +0.39% | — | |
| 50 | GWRE 1.25 11-01-29Bond | Guidewire Software Inc | Bond | 0.92% | -0.12% | — |
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | LITE 0.5 06-15-28Bond | Lumentum Holdings Inc | +2.3% | -10.82% | Trim |
| 2 | WDC 3 11-15-28Bond | Western Digital CORP | +1% | -18.04% | Trim |
| 3 | AEIS 2.5 09-15-28Bond | Advanced Energy Ind | +0.9% | -11.19% | Trim |
| 4 | MKSI 1.25 06-01-30Bond | Mks Inc | +0.6% | -0.10% | Trim |
| 5 | MQY | Blackrock Muniyield Quality | +0.5% | +345.46% | Add |
| 6 | FRPT 3 04-01-28Bond | Freshpet Inc | +0.5% | +48.92% | Add |
| 7 | MYN | Blackrock Muniyield Ny Qlty | +0.4% | +100.11% | Add |
| 8 | NOG 3.625 04-15-29Bond | Northern Oil & Gas Inc | +0.3% | +10.90% | Add |
| 9 | AKAM 0.375 09-01-27Bond | Akamai Technologies Inc | +0.3% | -0.12% | Trim |
| 10 | BBIO 2.25 02-01-29Bond | Bridgebio Pharma Inc | +0.2% | +16.17% | Add |
| 11 | ON 0 05-01-27Bond | On Semiconductor CORP | +0.2% | -0.53% | Trim |
| 12 | MIRM 4 05-01-29Bond | Mirum Pharmaceuticals | +0.2% | -9.71% | Trim |
| 13 | BTT | Blackrock 2030 Muni Trgt Trm | +0.2% | +14.82% | Add |
| 14 | BURL 1.25 12-15-27Bond | Burlington Stores Inc | +0.2% | — | Unchanged |
| 15 | CABO 1.125 03-15-28Bond | Cable One Inc | +0.2% | +11.47% | Add |
| 16 | NEE 7.299 06-01-27Bond | Nextera Energy Inc | +0.1% | +2.07% | Add |
| 17 | FLR 1.125 08-15-29Bond | Fluor CORP | +0.1% | +0.05% | Add |
| 18 | QXO 5.5 05-15-28Bond | Qxo Inc | +0.1% | -0.07% | Trim |
| 19 | AVAV 0 07-15-30Bond | Aerovironment Inc | +0.1% | +29.48% | Add |
| 20 | GBX 2.875 04-15-28Bond | Greenbrier Cos Inc | +0.1% | — | Unchanged |
| 21 | LYV 2.875 01-15-30Bond | Live Nation Entertainmen | +0.1% | +0.18% | Add |
| 22 | UBER 0.875 12-01-28 2028Bond | Uber Technologies Inc | +0.1% | +6.35% | Add |
| 23 | JAZZ 2 06-15-26Bond | Jazz Investments I LTD | +0.1% | — | Unchanged |
| 24 | HPE 7.625 09-01-27Bond | Hp Enterprise Co | 0% | +0.67% | Add |
| 25 | NCLH 1.125 02-15-27Bond | Ncl Corporation LTD | 0% | — | Unchanged |
| 26 | MCHP 7.5 03-15-28Bond | Microchip Technology Inc | 0% | -0.07% | Trim |
| 27 | GLD | Spdr Gold Shares | 0% | — | Unchanged |
| 28 | SPB 3.375 06-01-29Bond | Spectrum Brands Inc | 0% | — | Unchanged |
| 29 | CAKE 0.375 06-15-26Bond | Cheesecake Factory (the) | 0% | -0.41% | Trim |
| 30 | CHEF 2.375 12-15-28Bond | Chefs' Warehouse THE | 0% | -0.15% | Trim |
| 31 | DDOG 0 12-01-29Bond | Datadog Inc | 0% | — | Unchanged |
| 32 | ITGR 2.125 02-15-28Bond | Integer Holdings CORP | 0% | +3.19% | Add |
| 33 | SO 4.5 06-15-27Bond | Southern Co | 0% | +0.75% | Add |
| 34 | WEC 4.375 06-01-29Bond | Wec Energy Group Inc | 0% | -1.27% | Trim |
| 35 | OSIS 2.25 08-01-29Bond | Osi Systems Inc | 0% | +0.07% | Add |
| 36 | LYV 3.125 01-15-29Bond | Live Nation Entertainmen | 0% | -1.32% | Trim |
| 37 | MIY | Blackrock Muniyield Mi Qlty | 0% | -0.88% | Trim |
| 38 | MGPI 1.875 11-15-41Bond | Mgp Ingredients Inc | 0% | +0.46% | Add |
| 39 | PSN 2.625 03-01-29Bond | Parsons CORP | 0% | — | Unchanged |
| 40 | SYNA 0.75 12-01-31Bond | Synaptics Inc | 0% | — | Unchanged |
| 41 | VFL | Abrdn National Municipal Inc | 0% | — | Unchanged |
| 42 | NET 0 08-15-26Bond | Cloudflare Inc | 0% | -0.61% | Trim |
| 43 | MFM | Aberdeen Municipal Income | 0% | -1.91% | Trim |
| 44 | HALO 0.25 03-01-27Bond | Halozyme Therapeutics In | 0% | +3.38% | Add |
| 45 | IONS 1.75 06-15-28Bond | Ionis Pharmaceuticals In | — | — | Unchanged |
| 46 | WK 1.25 08-15-28Bond | Workiva Inc | — | — | Unchanged |
| 47 | WFC 7.5 PERP LBond | Wells Fargo & Company | — | -0.07% | Trim |
| 48 | BILL 0 04-01-30Bond | Bill Holdings Inc | — | — | Unchanged |
| 49 | WBD | Warner Bros Discovery Inc | — | — | Unchanged |
| 50 | WW | Ww International Inc-new | — | — | Unchanged |
According to official SEC Form 13F filings, Mackay Shields LLC reported a total U.S. public equity portfolio value of $3.0B across 111 disclosed positions in Q1 2026.
Expert Analysis & Guides for Tracking Wall Street Smart Money Movements
Learn how SEC Form 13F filings work, the $100M threshold, 45-day reporting lag, and how to track top hedge fund holdings.
In terms of portfolio concentration, the top 5 core holdings (including LITE 0.5 06-15-28, WDC 3 11-15-28, AEIS 2.5 09-15-28) accounted for 16.2% of total reported equity market value during Q1 2026.
Top New Position Initiated
ITGR 1.875 03-15-30
市值: $43.3M
Top Position Liquidated / Trimmed
F 0 03-15-26
前期市值: $31.3M
During Q1 2026, Mackay Shields LLC's top holdings by market value included LITE 0.5 06-15-28 (5.3%)、WDC 3 11-15-28 (4.1%)、AEIS 2.5 09-15-28 (3.5%). The largest single position, LITE 0.5 06-15-28, represented 5.3% of total portfolio value.
In Q1 2026, Mackay Shields LLC made 117 total portfolio adjustments, initiating 7 new buys, adding to 27 positions, trimming 55 holdings, and fully liquidating 28 stocks.
All holding records on this page are fetched directly from the U.S. Securities and Exchange Commission (SEC) EDGAR system (Form 13F-HR). AlphaSMO parses CUSIP identifiers and formats data into Schema.org-compliant datasets.
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