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Mackay Shields Llc

Portfolio Manager
Mackay Shields Llc
Performance
+11.01% (2026 Q1)
AUM (13F)
$2.73B
# of Holdings
111
Performance Rank
Allocation (Top 20)
41.3%

Mackay Shields Llc Holdings Map

Top 50 Mackay Shields Llc Holdings

Top 10 holdings

StockCompany% Port.SharesValueActivityOwnershipAvg. CostDate
LITE
LUMENTUM HLDGS INC
5.26%26.79M$143.6M
-10.82%(-3.25M)
2025-Q1: 30.45M shares2025-Q2: 30.45M shares2025-Q3: 30.45M shares2025-Q4: 30.04M shares2026-Q1: 26.79M shares
$62.59(+1546.27%)
2026-03-31
WDC
WESTERN DIGITAL CORP
4.06%15.48M$110.8M
-18.04%(-3.41M)
2025-Q1: 19.41M shares2025-Q2: 19.41M shares2025-Q3: 19.23M shares2025-Q4: 18.88M shares2026-Q1: 15.48M shares
$45.54(+984.88%)
2026-03-31
AEIS
ADVANCED ENERGY INDS
3.5%39.64M$95.4M
-11.19%(-4.99M)
2025-Q1: 45.62M shares2025-Q2: 45.39M shares2025-Q3: 45.17M shares2025-Q4: 44.64M shares2026-Q1: 39.64M shares
$106.82(+217.55%)
2026-03-31
MIRM
MIRUM PHARMACEUTICALS INC
2.53%23.05M$69.0M
-9.71%(-2.48M)
2025-Q1: 27.96M shares2025-Q2: 27.89M shares2025-Q3: 26.22M shares2025-Q4: 25.53M shares2026-Q1: 23.05M shares
$30.14(+262.19%)
2026-03-31
LNTH
LANTHEUS HLDGS INC
2.24%50.90M$61.2M
-10.25%(-5.82M)
2025-Q1: 56.02M shares2025-Q2: 55.83M shares2025-Q3: 55.67M shares2025-Q4: 56.71M shares2026-Q1: 50.90M shares
$65.62(+47.01%)
2026-03-31
CABO
CABLE ONE INC
2.14%77.36M$58.4M
+11.47%(+7.96M)
2025-Q1: 53.68M shares2025-Q2: 63.03M shares2025-Q3: 67.42M shares2025-Q4: 69.40M shares2026-Q1: 77.36M shares
$578.17(-90.96%)
2026-03-31
UBER
UBER TECHNOLOGIES INC
2%45.35M$54.6M
+6.35%(+2.71M)
2025-Q1: 43.37M shares2025-Q2: 43.17M shares2025-Q3: 42.99M shares2025-Q4: 42.64M shares2026-Q1: 45.35M shares
$64.84(+15.21%)
2026-03-31
BAPRA
BOEING CO
1.98%829.4K$53.9M
-0.08%(-683)
2025-Q1: 622.1K shares2025-Q2: 845.7K shares2025-Q3: 842.0K shares2025-Q4: 830.1K shares2026-Q1: 829.4K shares
$62.13(+22.21%)
2026-03-31
ON
ON SEMICONDUCTOR CORP
1.86%39.17M$50.6M
-0.53%(-209.00K)
2025-Q1: 0 shares2025-Q2: 45.18M shares2025-Q3: 39.98M shares2025-Q4: 39.38M shares2026-Q1: 39.17M shares
$66.71(+73.45%)
2026-03-31
PCG
PG&E CORP
1.76%46.38M$48.1M
-9.85%(-5.07M)
2025-Q1: 60.92M shares2025-Q2: 60.65M shares2025-Q3: 60.44M shares2025-Q4: 51.45M shares2026-Q1: 46.38M shares
$19.98(-16.90%)
2026-03-31

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