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Portfolio (Quarterly) Guide ↗

MACKAY SHIELDS LLC

· CIK 0000061227
13F Portfolio $2.9B AUM Filed Oct 27, 2025 EDGAR ↗ ← All Funds
Q4 2025 Q3 2025 · All 136 New
Page 1 of 7  ·  136 positions
# Ticker Company Sector Shares Value ↓ % Port Chg Shares Chg % Period Price ① Since Period ①
1 — SEAGATE HDD CAYMAN — 25,568,000.0 $73.7M 2.51% NEW — $2.88 —
2 — QXO INC — 1,186,085.0 $65.5M 2.23% NEW — $55.22 —
3 — TETRA TECH INC NEW — 58,598,000.0 $63.5M 2.16% NEW — $1.08 —
4 — UBER TECHNOLOGIES INC — 42,991,000.0 $63.3M 2.15% NEW — $1.47 —
5 — MIRUM PHARMACEUTICALS INC — 26,219,000.0 $63.1M 2.15% NEW — $2.41 —
6 — ADVANCED ENERGY INDS — 45,174,000.0 $62.7M 2.13% NEW — $1.39 —
7 — WESTERN DIGITAL CORP — 19,228,000.0 $61.7M 2.10% NEW — $3.21 —
8 — PG&E CORP — 60,439,000.0 $61.3M 2.08% NEW — $1.01 —
9 — LANTHEUS HLDGS INC — 55,673,000.0 $58.7M 2.00% NEW — $1.05 —
10 — BOEING CO — 841,981.0 $58.6M 1.99% NEW — $69.54 —
11 — HALOZYME THERAPEUTICS INC — 50,503,000.0 $58.0M 1.97% NEW — $1.15 —
12 — CABLE ONE INC — 67,424,000.0 $57.7M 1.96% NEW — $0.86 —
13 — POST HLDGS INC — 50,121,000.0 $56.3M 1.92% NEW — $1.12 —
14 — NUTANIX INC — 40,670,000.0 $56.1M 1.91% NEW — $1.38 —
15 — APOLLO GLOBAL MGMT INC — 721,847.0 $51.0M 1.74% NEW — $70.64 —
16 — OSI SYSTEMS INC — 32,536,000.0 $47.3M 1.61% NEW — $1.45 —
17 — LIBERTY MEDIA CORP DEL — 34,433,000.0 $45.7M 1.56% NEW — $1.33 —
18 — ON SEMICONDUCTOR CORP — 39,979,000.0 $45.6M 1.55% NEW — $1.14 —
19 — IRHYTHM TECHNOLOGIES INC — 30,856,000.0 $42.5M 1.45% NEW — $1.38 —
20 — LUMENTUM HLDGS INC — 30,445,000.0 $42.5M 1.45% NEW — $1.40 —
Page 1 of 7  ·  136 positions

① Period Price is the implied market price on the last day of the reporting period, calculated as reported value ÷ shares held. It is not the fund's purchase price or cost basis — the fund may have initiated or added to the position at any point during the quarter at a different price. Since Period shows the price change from that quarter-end snapshot to today's last price — it reflects stock movement after the report date, not the fund's actual return.

Sector Allocation
Financial Services 80.0%
Energy 16.1%
Communication Services 3.7%
Consumer Defensive 0.2%