CSS LLC/IL

Filed: 5/15/2026ACC: 0001103646-26-000009

📋 What this filing means

CSS LLC/IL filed this quarterly 13F‑HR report disclosing 817 equity positions with a total reported market value of $2.09B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.

817

Positions

$2.09B

Total AUM (reported)

666.87M

Total Shares

Allocation by class

COM$375.40M18.0%

NOTE 0.500% 6/1$216.50M10.4%

NOTE 3.875%11/3$146.55M7.0%

CL A$76.15M3.6%

NOTE 2.000% 6/1$63.95M3.1%

NOTE 3.125% 1/1$49.87M2.4%

DEB 4.625% 9/3$49.51M2.4%

Portfolio Concentration

Top 3$427.00M20.5%

4–10$241.87M11.6%

11–25$286.76M13.7%

Rest$1.13B54.2%

Top 3 weight

20.5%

Top 10 weight

32.0%

Voting Authority Distribution

Total shares with voting rights: 666.87M

Sole

Full voting authority

666.87M

% of voting shares100.0%

Shared

Joint voting authority

0.00

% of voting shares0.0%

None

No voting authority

0.00

% of voting shares0.0%

Investment Discretion (by position count)

Sole817

Shared0

Other0

Dominant voting typeSole · 100.0% of voting shares

Institutional Holdings817

Rows:

LUMENTUM HLDGS INC

SOLE

NOTE 0.500% 6/1

Shares40.46M

TypePRN

Market value$216.50M

10.37%

Sole

40.46M

Shared

0.00

None

0.00

ECHOSTAR CORP

SOLE

NOTE 3.875%11/3

Shares40.93M

TypePRN

Market value$146.55M

7.02%

Sole

40.93M

Shared

0.00

None

0.00

JAZZ INVESTMENTS I LTD

SOLE

NOTE 2.000% 6/1

Shares52.57M

TypePRN

Market value$63.95M

3.06%

Sole

52.57M

Shared

0.00

None

0.00

LIVE NATION ENTERTAINMENT IN

SOLE

NOTE 3.125% 1/1

Shares32.76M

TypePRN

Market value$49.87M

2.39%

Sole

32.76M

Shared

0.00

None

0.00

TRANSOCEAN INC

SOLE

DEB 4.625% 9/3

Shares24.42M

TypePRN

Market value$49.51M

2.37%

Sole

24.42M

Shared

0.00

None

0.00

PEABODY ENGR CORP

SOLE

NOTE 3.250% 3/0

Shares20.66M

TypePRN

Market value$37.84M

1.81%

Sole

20.66M

Shared

0.00

None

0.00

GAMESTOP CORP

SOLE

CL A

Shares1.22M

TypeSH

Market value$28.16M

1.35%

Sole

1.22M

Shared

0.00

None

0.00

NEXTERA ENERGY INC

SOLE

UNIT 02/15/2029

Shares540.74K

TypeSH

Market value$27.23M

1.30%

Sole

540.74K

Shared

0.00

None

0.00

CENTERPOINT ENERGY INC

SOLE

NOTE 4.250% 8/1

Shares21M

TypePRN

Market value$24.89M

1.19%

Sole

21M

Shared

0.00

None

0.00

PENUMBRA INC

SOLE

COM

Shares74.24K

TypeSH

Market value$24.38M

1.17%

Sole

74.24K

Shared

0.00

None

0.00

ALNYLAM PHARMACEUTICALS INC

SOLE

NOTE 1.000% 9/1

Shares18.56M

TypePRN

Market value$23.86M

1.14%

Sole

18.56M

Shared

0.00

None

0.00

HOLOGIC INC

SOLE

COM

Shares312.27K

TypeSH

Market value$23.60M

1.13%

Sole

312.27K

Shared

0.00

None

0.00

SPDR GOLD TR

SOLE

GOLD SHS

Shares52.12K

TypeSH

Market value$22.43M

1.07%

Sole

52.12K

Shared

0.00

None

0.00

INVESCO EXCHANGE TRADED FD T

SOLE

S&P500 EQL WGT

Shares110.98K

TypeSH

Market value$21.30M

1.02%

Sole

110.98K

Shared

0.00

None

0.00

VANGUARD INDEX FDS

SOLE

S&P 500 ETF SHS

Shares32.21K

TypeSH

Market value$19.25M

0.92%

Sole

32.21K

Shared

0.00

None

0.00

EQUINOX GOLD CORP

SOLE

NOTE 4.750%10/1

Shares7.94M

TypePRN

Market value$19.12M

0.92%

Sole

7.94M

Shared

0.00

None

0.00

CORE SCIENTIFIC INC NEW

SOLE

*W EXP 01/23/202

Shares2.08M

TypeSH

Market value$18.21M

0.87%

Sole

2.08M

Shared

0.00

None

0.00

ALBEMARLE CORP

SOLE

7.25% DEP SHS A

Shares250.42K

TypeSH

Market value$17.93M

0.86%

Sole

250.42K

Shared

0.00

None

0.00

AKAMAI TECHNOLOGIES INC

SOLE

NOTE 1.125% 2/1

Shares15.68M

TypePRN

Market value$17.87M

0.86%

Sole

15.68M

Shared

0.00

None

0.00

STRIDE INC

SOLE

NOTE 1.125% 9/0

Shares10.30M

TypePRN

Market value$17.76M

0.85%

Sole

10.30M

Shared

0.00

None

0.00

ISHARES GOLD TR

SOLE

ISHARES NEW

Shares200.04K

TypeSH

Market value$17.64M

0.84%

Sole

200.04K

Shared

0.00

None

0.00

STATE STR SPDR S&P 500 ETF T

SOLE

TR UNIT

Shares26.50K

TypeSH

Market value$17.23M

0.83%

Sole

26.50K

Shared

0.00

None

0.00

BRIDGEBIO PHARMA INC

SOLE

NOTE 1.750% 3/0

Shares10.10M

TypePRN

Market value$17.14M

0.82%

Sole

10.10M

Shared

0.00

None

0.00

ISHARES TR

SOLE

20 YR TR BD ETF

Shares197.67K

TypeSH

Market value$17.14M

0.82%

Sole

197.67K

Shared

0.00

None

0.00

APOLLO GLOBAL MGMT INC

SOLE

SER A MAND CNV

Shares277.32K

TypeSH

Market value$16.29M

0.78%

Sole

277.32K

Shared

0.00

None

0.00

Issuer	Class	Shares	Type	Value / Portfolio %	Voting — Sole
LUMENTUM HLDGS INCSOLE	NOTE 0.500% 6/1	40.46M	PRN	$216.50M 10.37%	40.46M
ECHOSTAR CORPSOLE	NOTE 3.875%11/3	40.93M	PRN	$146.55M 7.02%	40.93M
JAZZ INVESTMENTS I LTDSOLE	NOTE 2.000% 6/1	52.57M	PRN	$63.95M 3.06%	52.57M
LIVE NATION ENTERTAINMENT INSOLE	NOTE 3.125% 1/1	32.76M	PRN	$49.87M 2.39%	32.76M
TRANSOCEAN INCSOLE	DEB 4.625% 9/3	24.42M	PRN	$49.51M 2.37%	24.42M
PEABODY ENGR CORPSOLE	NOTE 3.250% 3/0	20.66M	PRN	$37.84M 1.81%	20.66M
GAMESTOP CORPSOLE	CL A	1.22M	SH	$28.16M 1.35%	1.22M
NEXTERA ENERGY INCSOLE	UNIT 02/15/2029	540.74K	SH	$27.23M 1.30%	540.74K
CENTERPOINT ENERGY INCSOLE	NOTE 4.250% 8/1	21M	PRN	$24.89M 1.19%	21M
PENUMBRA INCSOLE	COM	74.24K	SH	$24.38M 1.17%	74.24K
ALNYLAM PHARMACEUTICALS INCSOLE	NOTE 1.000% 9/1	18.56M	PRN	$23.86M 1.14%	18.56M
HOLOGIC INCSOLE	COM	312.27K	SH	$23.60M 1.13%	312.27K
SPDR GOLD TRSOLE	GOLD SHS	52.12K	SH	$22.43M 1.07%	52.12K
INVESCO EXCHANGE TRADED FD TSOLE	S&P500 EQL WGT	110.98K	SH	$21.30M 1.02%	110.98K
VANGUARD INDEX FDSSOLE	S&P 500 ETF SHS	32.21K	SH	$19.25M 0.92%	32.21K
EQUINOX GOLD CORPSOLE	NOTE 4.750%10/1	7.94M	PRN	$19.12M 0.92%	7.94M
CORE SCIENTIFIC INC NEWSOLE	*W EXP 01/23/202	2.08M	SH	$18.21M 0.87%	2.08M
ALBEMARLE CORPSOLE	7.25% DEP SHS A	250.42K	SH	$17.93M 0.86%	250.42K
AKAMAI TECHNOLOGIES INCSOLE	NOTE 1.125% 2/1	15.68M	PRN	$17.87M 0.86%	15.68M
STRIDE INCSOLE	NOTE 1.125% 9/0	10.30M	PRN	$17.76M 0.85%	10.30M
ISHARES GOLD TRSOLE	ISHARES NEW	200.04K	SH	$17.64M 0.84%	200.04K
STATE STR SPDR S&P 500 ETF TSOLE	TR UNIT	26.50K	SH	$17.23M 0.83%	26.50K
BRIDGEBIO PHARMA INCSOLE	NOTE 1.750% 3/0	10.10M	PRN	$17.14M 0.82%	10.10M
ISHARES TRSOLE	20 YR TR BD ETF	197.67K	SH	$17.14M 0.82%	197.67K
APOLLO GLOBAL MGMT INCSOLE	SER A MAND CNV	277.32K	SH	$16.29M 0.78%	277.32K

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