CSS LLC/IL

Filed: 8/14/2025ACC: 0001085146-25-005235

📋 What this filing means

CSS LLC/IL filed this quarterly 13F‑HR report disclosing 795 equity positions with a total reported market value of $2.14B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.

795

Positions

$2.14B

Total AUM (reported)

803.59M

Total Shares

Allocation by class

COM$422.40M19.7%

CL A NEW$111.50M5.2%

CL A$79.09M3.7%

NOTE 1.125% 9/0$75.94M3.5%

TR UNIT$75.38M3.5%

NOTE 4/0$58.04M2.7%

NOTE 2.000% 6/1$52.63M2.5%

Portfolio Concentration

Top 3$262.07M12.2%

4–10$289.68M13.5%

11–25$336.87M15.7%

Rest$1.26B58.6%

Top 3 weight

12.2%

Top 10 weight

25.7%

Voting Authority Distribution

Total shares with voting rights: 803.59M

Sole

Full voting authority

803.59M

% 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)

Sole795

Shared0

Other0

Dominant voting typeSole · 100.0% of voting shares

Institutional Holdings795

Rows:

MICROSTRATEGY INC

SOLE

CL A NEW

Shares274K

TypeSH

Market value$110.76M

5.16%

Sole

274K

Shared

0.00

None

0.00

STRIDE INC

SOLE

NOTE 1.125% 9/0

Shares27.27M

TypePRN

Market value$75.94M

3.54%

Sole

27.27M

Shared

0.00

None

0.00

SPDR S&P 500 ETF TR

SOLE

TR UNIT

Shares122K

TypeSH

Market value$75.38M

3.51%

Sole

122K

Shared

0.00

None

0.00

IONIS PHARMACEUTICALS INC

SOLE

NOTE 4/0

Shares57.35M

TypePRN

Market value$58.04M

2.71%

Sole

57.35M

Shared

0.00

None

0.00

JAZZ INVESTMENTS I LTD

SOLE

NOTE 2.000% 6/1

Shares52.05M

TypePRN

Market value$52.63M

2.45%

Sole

52.05M

Shared

0.00

None

0.00

SHIFT4 PMTS INC

SOLE

NOTE 12/1

Shares34.47M

TypePRN

Market value$43.54M

2.03%

Sole

34.47M

Shared

0.00

None

0.00

GAMESTOP CORP NEW

SOLE

CL A

Shares1.44M

TypeSH

Market value$35.13M

1.64%

Sole

1.44M

Shared

0.00

None

0.00

SEAGATE HDD CAYMAN

SOLE

NOTE 3.500% 6/0

Shares19.46M

TypePRN

Market value$34.99M

1.63%

Sole

19.46M

Shared

0.00

None

0.00

BRIGHTSPRING HEALTH SVCS INC

SOLE

UNIT 02/01/2027

Shares400.47K

TypeSH

Market value$33.03M

1.54%

Sole

400.47K

Shared

0.00

None

0.00

MARRIOTT VACATIONS WORLDWIDE

SOLE

NOTE 1/1

Shares33.30M

TypePRN

Market value$32.31M

1.51%

Sole

33.30M

Shared

0.00

None

0.00

MICROSTRATEGY INC

SOLE

NOTE 2.250% 6/1

Shares14.90M

TypePRN

Market value$32.05M

1.49%

Sole

14.90M

Shared

0.00

None

0.00

NEXTERA ENERGY INC

SOLE

UNIT 09/01/2025

Shares761.69K

TypeSH

Market value$30.30M

1.41%

Sole

761.69K

Shared

0.00

None

0.00

IMAX CORP

SOLE

NOTE 0.500% 4/0

Shares22.65M

TypePRN

Market value$25.50M

1.19%

Sole

22.65M

Shared

0.00

None

0.00

SNAP INC

SOLE

NOTE 0.750% 8/0

Shares24.02M

TypePRN

Market value$23.21M

1.08%

Sole

24.02M

Shared

0.00

None

0.00

UBER TECHNOLOGIES INC

SOLE

NOTE 0.875%12/0

Shares16.04M

TypePRN

Market value$22.94M

1.07%

Sole

16.04M

Shared

0.00

None

0.00

BANK AMERICA CORP

SOLE

7.25%CNV PFD L

Shares18.89K

TypeSH

Market value$22.86M

1.07%

Sole

18.89K

Shared

0.00

None

0.00

TRANSOCEAN INC

SOLE

DEB 4.625% 9/3

Shares21.32M

TypePRN

Market value$22.74M

1.06%

Sole

21.32M

Shared

0.00

None

0.00

PEABODY ENGR CORP

SOLE

NOTE 3.250% 3/0

Shares21.02M

TypePRN

Market value$21.73M

1.01%

Sole

21.02M

Shared

0.00

None

0.00

TRAVERE THERAPEUTICS INC

SOLE

NOTE 2.500% 9/1

Shares21.11M

TypePRN

Market value$20.90M

0.97%

Sole

21.11M

Shared

0.00

None

0.00

BLUEPRINT MEDICINES CORP

SOLE

COM

Shares157.19K

TypeSH

Market value$20.15M

0.94%

Sole

157.19K

Shared

0.00

None

0.00

MICROSTRATEGY INC

SOLE

NOTE 0.875% 3/1

Shares10.40M

TypePRN

Market value$19.60M

0.91%

Sole

10.40M

Shared

0.00

None

0.00

WAYFAIR INC

SOLE

NOTE 3.500%11/1

Shares14.25M

TypePRN

Market value$19.23M

0.90%

Sole

14.25M

Shared

0.00

None

0.00

WEC ENERGY GROUP INC

SOLE

NOTE 4.375% 6/0

Shares16.98M

TypePRN

Market value$19.14M

0.89%

Sole

16.98M

Shared

0.00

None

0.00

PTC THERAPEUTICS INC

SOLE

NOTE 1.500% 9/1

Shares16M

TypePRN

Market value$18.50M

0.86%

Sole

16M

Shared

0.00

None

0.00

NEXTERA ENERGY INC

SOLE

COM

Shares259.50K

TypeSH

Market value$18.01M

0.84%

Sole

259.50K

Shared

0.00

None

0.00

Issuer	Class	Shares	Type	Value / Portfolio %	Voting — Sole
MICROSTRATEGY INCSOLE	CL A NEW	274K	SH	$110.76M 5.16%	274K
STRIDE INCSOLE	NOTE 1.125% 9/0	27.27M	PRN	$75.94M 3.54%	27.27M
SPDR S&P 500 ETF TRSOLE	TR UNIT	122K	SH	$75.38M 3.51%	122K
IONIS PHARMACEUTICALS INCSOLE	NOTE 4/0	57.35M	PRN	$58.04M 2.71%	57.35M
JAZZ INVESTMENTS I LTDSOLE	NOTE 2.000% 6/1	52.05M	PRN	$52.63M 2.45%	52.05M
SHIFT4 PMTS INCSOLE	NOTE 12/1	34.47M	PRN	$43.54M 2.03%	34.47M
GAMESTOP CORP NEWSOLE	CL A	1.44M	SH	$35.13M 1.64%	1.44M
SEAGATE HDD CAYMANSOLE	NOTE 3.500% 6/0	19.46M	PRN	$34.99M 1.63%	19.46M
BRIGHTSPRING HEALTH SVCS INCSOLE	UNIT 02/01/2027	400.47K	SH	$33.03M 1.54%	400.47K
MARRIOTT VACATIONS WORLDWIDESOLE	NOTE 1/1	33.30M	PRN	$32.31M 1.51%	33.30M
MICROSTRATEGY INCSOLE	NOTE 2.250% 6/1	14.90M	PRN	$32.05M 1.49%	14.90M
NEXTERA ENERGY INCSOLE	UNIT 09/01/2025	761.69K	SH	$30.30M 1.41%	761.69K
IMAX CORPSOLE	NOTE 0.500% 4/0	22.65M	PRN	$25.50M 1.19%	22.65M
SNAP INCSOLE	NOTE 0.750% 8/0	24.02M	PRN	$23.21M 1.08%	24.02M
UBER TECHNOLOGIES INCSOLE	NOTE 0.875%12/0	16.04M	PRN	$22.94M 1.07%	16.04M
BANK AMERICA CORPSOLE	7.25%CNV PFD L	18.89K	SH	$22.86M 1.07%	18.89K
TRANSOCEAN INCSOLE	DEB 4.625% 9/3	21.32M	PRN	$22.74M 1.06%	21.32M
PEABODY ENGR CORPSOLE	NOTE 3.250% 3/0	21.02M	PRN	$21.73M 1.01%	21.02M
TRAVERE THERAPEUTICS INCSOLE	NOTE 2.500% 9/1	21.11M	PRN	$20.90M 0.97%	21.11M
BLUEPRINT MEDICINES CORPSOLE	COM	157.19K	SH	$20.15M 0.94%	157.19K
MICROSTRATEGY INCSOLE	NOTE 0.875% 3/1	10.40M	PRN	$19.60M 0.91%	10.40M
WAYFAIR INCSOLE	NOTE 3.500%11/1	14.25M	PRN	$19.23M 0.90%	14.25M
WEC ENERGY GROUP INCSOLE	NOTE 4.375% 6/0	16.98M	PRN	$19.14M 0.89%	16.98M
PTC THERAPEUTICS INCSOLE	NOTE 1.500% 9/1	16M	PRN	$18.50M 0.86%	16M
NEXTERA ENERGY INCSOLE	COM	259.50K	SH	$18.01M 0.84%	259.50K

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