MACKAY SHIELDS LLC

CIK 0000061227 · NEW YORK, NY · Quarter end: 2026-06-30 · Filed on: 2026-07-28 · Open the SEC source

MACKAY SHIELDS LLC reported 108 positions worth $2.99B as of June 30, 2026 (13F filed July 28, 2026). Largest holding: WDC 3 11-15-28 (5.1%).

Portfolio Value (AUM)Total value of the fund's US stock portfolio reported to the SEC.
$2.99B
2026 Q2
Positions
108
Top-10 ConcentrationHow much of the portfolio sits in the 10 largest holdings. High = concentrated bets.
28.0%
Est. Net Flow (Q)
2026 Q2
10 / 108 positions shown
#SymbolCompanyTypeValue% Port.Shares1YYTD
1WDC 3 11-15-28WESTERN DIGITAL CORPSH$150.8M5.05%8,952,000
2GOOGL 6.25 05-15-29 AALPHABET INCSH$122.6M4.11%2,427,303
3MKSI 1.25 06-01-30MKS INC.SH$107.5M3.60%36,470,000
4LITE 0.5 06-15-28LUMENTUM HLDGS INCSH$84.1M2.82%12,884,000
5LNTH 2.625 12-15-27LANTHEUS HLDGS INCSH$74.0M2.48%50,863,000
6HPE 7.625 09-01-27HEWLETT PACKARD ENTERPRISE CSH$70.2M2.35%601,263
7CABO 1.125 03-15-28CABLE ONE INCSH$58.8M1.97%89,888,000
8QXO 5.5 05-15-28QXO INCSH$57.4M1.92%1,169,488
9BA 6 10-15-27BOEING COSH$56.2M1.88%828,674
10TTEK 2.25 08-15-28TETRA TECH INC NEWSH$55.3M1.85%52,445,000

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Read the 2026-Q2 quarterly report · 13F Filing Calendar

Frequently Asked Questions

What stocks does MACKAY SHIELDS LLC hold as of Q2 2026?

MACKAY SHIELDS LLC reported 108 positions worth $2.99B in its Q2 2026 13F filing. Largest positions: WDC 3 11-15-28 (5.1%), GOOGL 6.25 05-15-29 A (4.1%), MKSI 1.25 06-01-30 (3.6%), LITE 0.5 06-15-28 (2.8%) and LNTH 2.625 12-15-27 (2.5%).

What did MACKAY SHIELDS LLC buy in Q2 2026?

No previous quarter is available yet; the comparison appears with the next filing.

What did MACKAY SHIELDS LLC sell in Q2 2026?

No previous quarter is available yet.

13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.