Terminal · Institutions
Every 13F-reported equity position this quarter, with its quarter-over-quarter change — each row traces back to the SEC filing.
Every 13F-reported equity position this quarter, with its quarter-over-quarter change — each row traces back to the SEC filing.
MACKAY SHIELDS LLC (CIK 61227) reported $2.73B across 102 reported positions in its SEC 13F filing for 2026-03-31. Largest positions: LITE ($143.6M, 5.26%), WDC ($110.8M, 4.06%), AEIS ($95.4M, 3.50%), MIRM ($69.0M, 2.53%), QXOBV ($65.3M, 2.39%). Source: SEC Form 13F.
| Rank | Ticker | Company | Value | % Portfolio | Shares | Action |
|---|---|---|---|---|---|---|
| 1 | LITE | LUMENTUM HLDGS INC | $143.6M | 5.26% | 26.8M | Trimmed |
| 2 | WDC | WESTERN DIGITAL CORP | $110.8M | 4.06% | 15.5M | Trimmed |
| 3 | AEIS | ADVANCED ENERGY INDS | $95.4M | 3.50% | 39.6M | Trimmed |
| 4 | MIRM | MIRUM PHARMACEUTICALS INC | $69.0M | 2.53% | 23.1M | Trimmed |
| 5 | QXOBV | QXO INC | $65.3M | 2.39% | 1.2M | Trimmed |
| 6 | LNTH | LANTHEUS HLDGS INC | $61.2M | 2.24% | 50.9M | Trimmed |
| 7 | MKSI | MKS INC. | $60.4M | 2.21% | 36.5M | Trimmed |
| 8 | CABO | CABLE ONE INC | $58.4M | 2.14% | 77.4M | Added |
| 9 | TTEK | TETRA TECH INC NEW | $57.2M | 2.10% | 54.5M | Trimmed |
| 10 | UBER | UBER TECHNOLOGIES INC | $54.6M | 2.00% | 45.4M | Added |
| 11 | BA-PA | BOEING CO | $53.9M | 1.98% | 829,414 | Trimmed |
| 12 | ON | ON SEMICONDUCTOR CORP | $50.6M | 1.86% | 39.2M | Trimmed |
| 13 | PCG-PX | PG&E CORP | $48.1M | 1.76% | 46.4M | Trimmed |
| 14 | POST | POST HLDGS INC | $43.6M | 1.60% | 40.2M | Trimmed |
| 15 | ITGR | INTEGER HLDGS CORP | $43.3M | 1.59% | 45.2M | New |
| 16 | APO/PRA | APOLLO GLOBAL MGMT INC | $42.0M | 1.54% | 713,809 | Trimmed |
| 17 | AKAM | AKAMAI TECHNOLOGIES INC | $39.2M | 1.44% | 33.8M | Trimmed |
| 18 | BATRA1 | LIBERTY MEDIA CORP DEL | $39.3M | 1.44% | 34.0M | Trimmed |
| 19 | HPE-PC | HEWLETT PACKARD ENTERPRISE C | $39.0M | 1.43% | 601,856 | Added |
| 20 | SNOW | SNOWFLAKE INC | $38.5M | 1.41% | 32.6M | Added |
| 21 | NCL CORP LTD | $38.0M | 1.39% | 38.9M | Hold | |
| 22 | BBIO | BRIDGEBIO PHARMA INC | $37.4M | 1.37% | 33.3M | Added |
| 23 | NOG | NORTHERN OIL & GAS INC | $36.6M | 1.34% | 33.3M | Added |
| 24 | FRPT | FRESHPET INC | $36.6M | 1.34% | 31.8M | Added |
| 25 | IRTC | IRHYTHM HOLDINGS INC | $35.8M | 1.31% | 32.6M | Trimmed |
Source: SEC Form 13F filings · as of 2026-03-31