13F Insight
DOSSIER · 13F-HR · Q2 2026

CSS LLC/IL

$2.6B in tracked AUM across 1,001 positions as of Q2 2026.

CL
CIK 0001103646 · last filed Jun 30, 2026
Total AUM
$2.6B
as of Q2 2026
Holdings
1,001
—
positions
Whale Score
58
58
tracked
Activity
—
no data
changes this Q
AI Analysis · Q2 2026

CSS LLC/IL filed its latest 13F-HR for Q2 2026. See the latest holdings and position changes below.

Quarter at a glance — Q2 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q2 2026.

#HoldingValueSharesWeight
01
LITE 0.5 06/15/28
LUMENTUM HLDGS INC
$246M37.6M9.6%02
HPE 7.625 09/01/27
HEWLETT PACKARD ENTERPRISE C
$149M1.3M5.8%03
SATS 3.875 11/30/30
ECHOSTAR CORP
$137M43.9M5.4%04
APO 6.75 07/31/26
APOLLO GLOBAL MGMT INC
$83M1.4M3.2%05
BAC 7.25 PERP L
BANK OF AMER CORP
$63M50K2.5%06
WOLF 2.5 06/15/31
WOLFSPEED INC
$54M13.8M2.1%07
SMCI 7 06/01/29
SUPER MICRO COMPUTER INC
$45M878K1.8%08
CORZW
CORE SCIENTIFIC INC NEW
$44M2.4M1.7%09
MCHP 7.5 03/15/28
MICROCHIP TECHNOLOGY INC.
$43M559K1.7%10
NET 0 08/15/26
CLOUDFLARE INC
$34M26.1M1.3%

Filing history

2026Q2Jun 30
$2.6B▲ 23.0%
1,001 positionsView →2026Q1Mar 31
$2.1B▼ 7.2%
961 positionsView →2025Q4Dec 31
$2.2B▲ 0.9%
999 positionsView →2025Q3Sep 30
$2.2B▲ 4.0%
985 positionsView →2025Q2Jun 30
$2.1B▲ 17.7%
953 positionsLocked2025Q1Mar 31
$1.8B▼ 19.6%
909 positionsLocked2024Q4Dec 31
$2.3B▲ 3.6%
955 positionsLocked2024Q3Sep 30
$2.2B▲ 11.8%
820 positionsLocked2024Q2Jun 30
$2.0B▲ 12.9%
875 positionsLocked2024Q1Mar 31
$1.7B▲ 0.1%
806 positionsLocked2023Q4Dec 31
$1.7B▲ 13.5%
792 positionsLocked2023Q3Sep 30
$1.5B▼ 5.7%
808 positionsLocked
Showing 12 of 50