13F Filings History of MACKAY SHIELDS LLC

Latest 13F report
Q4 2025 - 29 Jan 2026
Value $
$2,857,443,441
Signature - Title
Chris Fitzgerald - Chief Compliance Officer
Location
New York, NY
Summary
This page shows a list of all the recent 13F filings made by MACKAY SHIELDS LLC. Form 13F is required to be filed within 45 days of the end of a calendar quarter. MACKAY SHIELDS LLC reported 132 stock holdings with total value $2,857,443,441 as of Q4 2025. Top holdings included WESTERN DIGITAL CORP, LUMENTUM HLDGS INC, ADVANCED ENERGY INDS, MIRUM PHARMACEUTICALS INC, and LANTHEUS HLDGS INC.

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Holdings Value
Quarter Holdings Value $ Bought Sold Net Top Holdings Form Type Filing Time
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
Q1 2020 1,384 $10,810,386,000 +$1,152,296,466 -$1,994,918,371 -$842,621,905 SPY, MSFT, AAPL, AMZN, VOO 13F-HR 07 May 2020, 17:55
Q4 2019 1,342 $14,506,924,000 +$1,375,387,264 -$4,525,042,619 -$3,149,655,355 SPY, VOO, AAPL, MSFT, AMZN 13F-HR 10 Feb 2020, 17:36
Q3 2019 1,395 $16,401,494,000 +$3,802,239,698 -$2,100,683,270 +$1,701,556,428 SPY, VOO, MSFT, AAPL, AMZN 13F-HR 01 Nov 2019, 17:11
Q2 2019 1,403 $14,667,162,000 +$2,270,524,935 -$1,796,374,093 +$474,150,842 SPY, VOO, MSFT, AAPL, AMZN 13F-HR 13 Aug 2019, 10:24
Q1 2019 1,374 $13,648,435,000 +$1,229,816,217 -$1,310,652,060 -$80,835,843 SPY, VOO, MSFT, AAPL, AMZN Restatement 15 May 2019, 11:07
Q4 2018 1,367 $12,324,677,000 +$3,000,906,100 -$1,945,197,370 +$1,055,708,730 SPY, VOO, MSFT, AAPL, AMZN 13F-HR 14 Feb 2019, 11:10
Q3 2018 1,095 $13,097,104,000 +$1,383,185,982 -$3,314,778,368 -$1,931,592,386 SPY, VOO, MSFT, META, GOOGL 13F-HR 14 Nov 2018, 11:13
Q2 2018 1,193 $14,405,950,000 +$1,770,552,697 -$3,829,329,936 -$2,058,777,239 SPY, VOO, AAPL, MSFT, AMZN 13F-HR 06 Aug 2018, 16:54
Q1 2018 1,251 $16,004,873,000 +$13,707,703,772 -$448,775,291 +$13,258,928,481 HFXI, SPY, VOO, AAPL, MSFT 13F-HR 03 May 2018, 11:07
Q4 2017 162 $2,737,698,000 +$253,705,192 -$271,757,683 -$18,052,491 SGY, DISH NETWORK CORP, DANAHER CORP DEL, AIR LEASE CORP, MICROCHIP TECHNOLOGY INC 13F-HR 24 Jan 2018, 09:39
Q3 2017 159 $2,688,168,000 +$421,127,038 -$197,020,458 +$224,106,580 DISH NETWORK CORP, SGY, DANAHER CORP DEL, MICROCHIP TECHNOLOGY INC, WEATHERFORD INTL LTD 13F-HR 24 Oct 2017, 14:16
Q2 2017 128 $2,363,665,000 +$383,206,190 -$232,083,144 +$151,123,046 SGY, DANAHER CORP DEL, AMERICAN RLTY CAP PPTYS INC, XPO LOGISTICS INC, MACQUARIE INFRASTRUCTURE COR 13F-HR 13 Jul 2017, 10:50
Q1 2017 114 $2,198,379,000 +$179,994,970 -$174,904,832 +$5,090,138 SGY, AMERICAN RLTY CAP PPTYS INC, DANAHER CORP DEL, TELEFLEX INC, XILINX INC 13F-HR 20 Apr 2017, 10:13
Q4 2016 118 $2,096,102,000 +$171,846,132 -$329,850,605 -$158,004,473 AMERICAN RLTY CAP PPTYS INC, XILINX INC, DANAHER CORP DEL, MACQUARIE INFRASTRUCTURE COR, TELEFLEX INC 13F-HR 10 Jan 2017, 17:11
Q3 2016 115 $2,219,474,000 +$310,508,711 -$212,722,180 +$97,786,531 AMERICAN RLTY CAP PPTYS INC, TELEFLEX INC, DANAHER CORP DEL, XILINX INC, MACQUARIE INFRASTRUCTURE COR 13F-HR 20 Oct 2016, 08:43
Q2 2016 114 $2,008,887,000 +$352,268,267 -$209,168,430 +$143,099,837 EXIDE TECHNOLOGIES, TELEFLEX INC, AMERICAN RLTY CAP PPTYS INC, DANAHER CORP DEL, MACQUARIE INFRASTRUCTURE COR 13F-HR 25 Jul 2016, 07:00
Q1 2016 110 $1,835,772,000 +$196,200,395 -$162,943,066 +$33,257,329 EXIDE TECHNOLOGIES, JARDEN CORP, TELEFLEX INC, DANAHER CORP DEL, XILINX INC 13F-HR 20 Apr 2016, 21:21
Q4 2015 115 $1,840,757,000 +$186,538,824 -$331,636,125 -$145,097,301 JARDEN CORP, DANAHER CORP DEL, TELEFLEX INC, XILINX INC, AIR LEASE CORP 13F-HR 19 Jan 2016, 09:07
Q3 2015 128 $1,917,220,000 +$264,522,918 -$171,167,866 +$93,355,052 DANAHER CORP DEL, TEVA PHARMACEUTICAL FIN LLC, JARDEN CORP, TELEFLEX INC, XILINX INC 13F-HR 22 Oct 2015, 08:57
Q2 2015 128 $1,953,757,000 +$310,288,833 -$249,322,029 +$60,966,804 DANAHER CORP DEL, GILEAD SCIENCES INC, TELEFLEX INC, TEVA PHARMACEUTICAL FIN LLC, MACQUARIE INFRASTRUCTURE COR 13F-HR 31 Jul 2015, 20:27
Q1 2015 130 $1,889,075,000 +$329,458,954 -$409,841,697 -$80,382,743 DANAHER CORP DEL, TEVA PHARMACEUTICAL FIN LLC, XILINX INC, GILEAD SCIENCES INC, TELEFLEX INC 13F-HR 04 May 2015, 21:38
Q4 2014 131 $1,940,841,000 +$258,868,973 -$279,048,011 -$20,179,038 INTEL CORP, GILEAD SCIENCES INC, DANAHER CORP DEL, CONTINENTAL AIRLS INC, XILINX INC 13F-HR 29 Jan 2015, 07:44
Q3 2014 135 $1,932,505,000 +$386,363,886 -$274,670,001 +$111,693,885 GILEAD SCIENCES INC, INTEL CORP, DANAHER CORP DEL, TEVA PHARMACEUTICAL FIN LLC, NOVELLUS SYS INC 13F-HR 24 Oct 2014, 12:38
Q2 2014 115 $1,814,587,000 +$312,330,292 -$532,163,021 -$219,832,729 GILEAD SCIENCES INC, INTEL CORP, DANAHER CORP DEL, SALIX PHARMACEUTICALS INC, TEVA PHARMACEUTICAL FIN LLC 13F-HR 22 Jul 2014, 16:42
Q1 2014 133 $1,984,403,000 +$216,736,891 -$926,465,671 -$709,728,780 GILEAD SCIENCES INC, DANAHER CORP DEL, UTXPRA, TEVA PHARMACEUTICAL FIN LLC, SALIX PHARMACEUTICALS INC 13F-HR 08 May 2014, 17:26
Q4 2013 674 $2,656,900,000 $0 $0 $0 GILEAD SCIENCES INC, DANAHER CORP DEL, SCHLUMBERGER, UTXPRA, GM 13F-HR 27 Jan 2014, 21:34