13F Filings History of MACKAY SHIELDS LLC

13F snapshot Latest parsed holdings, value, and filing-period context. 2 signals
Form 13F summary
  • MACKAY SHIELDS LLC Form 13F history summarizes parsed U.S.-listed equity disclosures for this manager.
  • Form 13F is generally due within 45 days after each calendar quarter ends.
  • MACKAY SHIELDS LLC reported 108 equity holdings with a total reported market value of $2,985,036,018 for Q2 2026. Top reported holdings included WESTERN DIGITAL CORP, GOOGM, MKS INC., LUMENTUM HLDGS INC, and LANTHEUS HLDGS INC.
Manager Names, identifiers, and filing context for this profile. 2 identity fields
Manager signature
Chris Fitzgerald - Chief Compliance Officer
Manager location
New York, NY

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Holdings Value

Form 13F evidence

Quarterly portfolio filings

SEC-reported 13F quarters for this filer, ordered by the latest accepted filing.

Latest quarter
Q2 2026
Latest value
$2,985,036,018
Quarter delta
+$257,475,552
Accepted
28 Jul 2026, 13:40
Rows shown
1-25 of 51
Quarter Holdings SEC-reported value Bought Sold Net Top Holdings Form Type Accepted by SEC
Q2 2026 108 $2,985,036,018 +$474,023,938 -$633,295,076 -$159,271,138 WESTERN DIGITAL CORP, GOOGM, MKS INC., LUMENTUM HLDGS INC, LANTHEUS HLDGS INC 13F-HR 28 Jul 2026, 13:40
Q1 2026 111 $2,727,560,466 +$229,786,049 -$526,500,548 -$296,714,499 LUMENTUM HLDGS INC, WESTERN DIGITAL CORP, ADVANCED ENERGY INDS, MIRUM PHARMACEUTICALS INC, QXOPRB 13F-HR 24 Apr 2026, 17:38
Q4 2025 132 $2,857,443,441 +$218,914,340 -$422,797,676 -$203,883,336 WESTERN DIGITAL CORP, LUMENTUM HLDGS INC, ADVANCED ENERGY INDS, MIRUM PHARMACEUTICALS INC, LANTHEUS HLDGS INC 13F-HR 28 Jan 2026, 21:47
Q3 2025 136 $2,939,899,446 +$268,205,890 -$583,899,319 -$315,693,429 SEAGATE HDD CAYMAN, QXOPRB, TETRA TECH INC NEW, UBER TECHNOLOGIES INC, MIRUM PHARMACEUTICALS INC 13F-HR 27 Oct 2025, 13:33
Q2 2025 145 $3,122,192,222 +$404,921,676 -$490,599,169 -$85,677,493 TETRA TECH INC NEW, LANTHEUS HLDGS INC, POST HLDGS INC, UBER TECHNOLOGIES INC, PG&E CORP 13F-HR 24 Jul 2025, 15:23
Q1 2025 144 $3,088,193,065 +$274,930,075 -$519,285,640 -$244,355,565 LANTHEUS HLDGS INC, NRG ENERGY INC, POST HLDGS INC, TETRA TECH INC NEW, PG&E CORP 13F-HR 28 Apr 2025, 17:57
Q4 2024 147 $3,392,524,740 +$319,648,077 -$532,689,013 -$213,040,936 TETRA TECH INC NEW, LANTHEUS HLDGS INC, NRG ENERGY INC, POST HLDGS INC, INTEGER HLDGS CORP 13F-HR 03 Feb 2025, 21:49
Q3 2024 144 $3,648,971,986 +$468,055,930 -$253,783,563 +$214,272,367 LANTHEUS HLDGS INC, TETRA TECH INC NEW, TRANSMEDICS GROUP INC, MICROCHIP TECHNOLOGY INC., NRG ENERGY INC 13F-HR 31 Oct 2024, 10:42
Q2 2024 139 $3,289,725,522 +$456,531,172 -$747,106,759 -$290,575,587 TRANSMEDICS GROUP INC, PALO ALTO NETWORKS INC, NICE LTD, MICROCHIP TECHNOLOGY INC., LANTHEUS HLDGS INC 13F-HR 07 Aug 2024, 19:41
Q1 2024 140 $3,607,878,455 +$436,982,562 -$369,990,042 +$66,992,520 GPOR, NICE LTD, PIONEER NAT RES CO, NRG ENERGY INC, MICROCHIP TECHNOLOGY INC. 13F-HR 02 May 2024, 21:18
Q4 2023 139 $3,406,550,897 +$281,211,692 -$478,169,352 -$196,957,660 GPOR, NICE LTD, PIONEER NAT RES CO, DISH NETWORK CORPORATION, MICROCHIP TECHNOLOGY INC. 13F-HR 02 Feb 2024, 13:31
Q3 2023 157 $3,515,717,069 +$368,053,868 -$430,282,350 -$62,228,482 GPOR, HELIX ENERGY SOLUTIONS GRP I, EQT CORP, NICE LTD, DISH NETWORK CORPORATION 13F-HR 24 Oct 2023, 21:29
Q2 2023 147 $3,576,995,312 +$212,965,157 -$406,769,668 -$193,804,511 GPOR, NICE LTD, EQT CORP, MICROCHIP TECHNOLOGY INC., PIONEER NAT RES CO 13F-HR 26 Jul 2023, 20:45
Q1 2023 154 $3,642,045,402 +$348,591,008 -$667,647,995 -$319,056,987 GPOR, DHRPRB, NICE LTD, MICROCHIP TECHNOLOGY INC., EQT CORP 13F-HR 27 Apr 2023, 13:55
Q4 2022 241 $3,919,396,919 +$101,422,215 -$261,791,878 -$160,369,663 GPOR, PIONEER NAT RES CO, EQT CORP, DHRPRB, ELEVANCE HEALTH INC 13F-HR 30 Jan 2023, 20:04
Q3 2022 242 $3,954,984,000 +$122,988,525 -$261,847,793 -$138,859,268 GPOR, EQT CORP, PIONEER NAT RES CO, DHRPRB, NICE LTD 13F-HR 01 Nov 2022, 19:56
Q2 2022 247 $4,121,846,000 +$154,223,188 -$6,781,300,565 -$6,627,077,377 GPOR, PIONEER NAT RES CO, EQT CORP, DHRPRB, NICE LTD 13F-HR 03 Aug 2022, 10:45
Q1 2022 731 $11,378,459,000 +$496,643,648 -$710,685,328 -$214,041,680 SPY, VOO, AAPL, MSFT, AMZN 13F-HR 12 May 2022, 21:14
Q4 2021 717 $12,041,352,000 +$1,086,843,707 -$400,072,110 +$686,771,597 SPY, VOO, AAPL, MSFT, AMZN 13F-HR 03 Feb 2022, 21:43
Q3 2021 712 $10,598,593,000 +$794,984,851 -$721,900,738 +$73,084,113 SPY, VOO, AAPL, MSFT, AMZN Restatement 14 Jan 2022, 20:01
Q2 2021 708 $10,642,754,000 +$1,093,067,643 -$5,120,025,434 -$4,026,957,791 SPY, VOO, AAPL, MSFT, AMZN 13F-HR 13 Aug 2021, 16:46
Q1 2021 1,498 $13,717,283,000 +$1,435,057,927 -$3,124,470,634 -$1,689,412,707 VOO, SPY, AAPL, MSFT, AMZN 13F-HR 14 May 2021, 10:29
Q4 2020 1,491 $14,507,054,000 +$1,222,795,604 -$2,237,822,109 -$1,015,026,505 SPY, AAPL, MSFT, AMZN, VOO 13F-HR 16 Feb 2021, 13:28
Q3 2020 1,417 $13,741,059,000 +$2,134,069,500 -$1,457,055,183 +$677,014,317 SPY, AAPL, MSFT, AMZN, VOO 13F-HR 03 Nov 2020, 21:19
Q2 2020 1,454 $12,539,165,000 +$1,422,099,029 -$1,999,291,190 -$577,192,161 SPY, MSFT, AAPL, AMZN, VOO 13F-HR 30 Jul 2020, 21:37
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