Arkolith/Funds/MACKAY SHIELDS LLC

MACKAY SHIELDS LLC

CIK: 61227Q1 2026
Active Filer
Portfolio Value
$2.7B
Positions
335
New Buys
22
28 sold
Changes
123 ↑ / 119 ↓

Top HoldingsQ1 2026

335 total positions
#SecurityValueShares% PortChangeΔ Shares
1LUMENTUM HLDGS INC
NOTE 0.500% 6/1
$136.2M25.41M5.0%
REDUCED
-3,077,000
2WESTERN DIGITAL CORP
NOTE 3.000%11/1
$90.7M12.66M3.3%
ADDED
+11.91M
3ADVANCED ENERGY INDS
NOTE 2.500% 9/1
$80.0M33.25M2.9%
ADDED
+31.73M
4MIRUM PHARMACEUTICALS INC
NOTE 4.000% 5/0
$61.1M20.43M2.2%
REDUCED
-2,358,000
5QXO INC
5.50 DEP PFD
$56.6M1.01M2.1%
ADDED
+968.8K
6MKS INC.
NOTE 1.250% 6/0
$53.2M32.17M2.0%
ADDED
+29.29M
7LANTHEUS HLDGS INC
NOTE 2.625%12/1
$52.0M43.27M1.9%
ADDED
+37.84M
8TETRA TECH INC NEW
DBCV 2.250% 8/1
$48.6M46.29M1.8%
ADDED
+40.75M
9BOEING CO
DEP CONV PFD A
$44.6M685.6K1.6%
ADDED
+682.2K
10UBER TECHNOLOGIES INC
NOTE 0.875%12/0
$43.5M36.11M1.6%
ADDED
+34.38M
11ON SEMICONDUCTOR CORP
NOTE 5/0
$42.3M32.73M1.6%
ADDED
+32.57M
12INTEGER HLDGS CORP
DBCV 1.875% 3/1
$41.4M43.15M1.5%
NEW
13PG&E CORP
NOTE 4.250%12/0
$39.2M37.88M1.4%
ADDED
+33.20M
14POST HLDGS INC
NOTE 2.500% 8/1
$36.8M33.96M1.4%
REDUCED
-9,214,000
15NCL CORP LTD
NOTE 1.125% 2/1
$36.7M37.60M1.3%
HELD
0
16
CABLE ONE INC
NOTE 1.125% 3/1
$35.2M46.63M1.3%
ADDED
+20.80M
17APOLLO GLOBAL MGMT INC
SER A MAND CNV
$35.2M597.4K1.3%
ADDED
+511.2K
18ISHARES GOLD TR
ISHARES NEW
$34.4M390.1K1.3%
REDUCED
-84,850
19BRIDGEBIO PHARMA INC
NOTE 2.250% 2/0
$32.5M29.01M1.2%
ADDED
+1.44M
20
BURLINGTON STORES INC
NOTE 1.250%12/1
$32.4M19.61M1.2%
HELD
0
21LIBERTY MEDIA CORP DEL
NOTE 2.250% 8/1
$32.4M28.02M1.2%
HELD
0
22IRHYTHM HOLDINGS INC
NOTE 1.500% 9/0
$32.4M29.52M1.2%
ADDED
+28.52M
23HEWLETT PACKARD ENTERPRISE C
7.625 MAND CONV
$32.0M492.7K1.2%
ADDED
+471.2K
24DATADOG INC
NOTE 12/0
$31.6M32.60M1.2%
HELD
0
25AKAMAI TECHNOLOGIES INC
NOTE 0.375% 9/0
$31.3M26.96M1.1%
ADDED
+21.42M
Showing top 25 of 335 positions

Filing History

Q1 2026307 pos
$2.7B
Q4 2025340 pos
$2.9B

Data Source

Holdings data sourced from SEC EDGAR 13F-HR filings. Updated quarterly, approximately 45 days after quarter end. All data is public domain.

Last filed: Apr 27, 2026