CSS LLC/IL

Filed: 5/15/2025ACC: 0001085146-25-003288

📋 What this filing means

CSS LLC/IL filed this quarterly 13F‑HR report disclosing 732 equity positions with a total reported market value of $1.82B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.

732

Positions

$1.82B

Total AUM (reported)

817.04M

Total Shares

Allocation by class

COM$390.82M21.4%

CL A NEW$72.97M4.0%

NOTE 6.500% 7/0$67.33M3.7%

NOTE 1.125% 9/0$66.58M3.7%

NOTE 0.750% 6/0$53.41M2.9%

NOTE 2.000% 6/1$50.32M2.8%

TR UNIT$45.33M2.5%

Portfolio Concentration

Top 3$206.52M11.3%

4–10$294.35M16.2%

11–25$319.23M17.5%

Rest$1.00B55.0%

Top 3 weight

11.3%

Top 10 weight

27.5%

Voting Authority Distribution

Total shares with voting rights: 817.04M

Sole

Full voting authority

817.04M

% 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)

Sole732

Shared0

Other0

Dominant voting typeSole · 100.0% of voting shares

Institutional Holdings732

Rows:

MICROSTRATEGY INC

SOLE

CL A NEW

Shares251.90K

TypeSH

Market value$72.62M

3.99%

Sole

251.90K

Shared

0.00

None

0.00

AMERICAN AIRLINES GROUP INC

SOLE

NOTE 6.500% 7/0

Shares67.18M

TypePRN

Market value$67.33M

3.70%

Sole

67.18M

Shared

0.00

None

0.00

STRIDE INC

SOLE

NOTE 1.125% 9/0

Shares27.27M

TypePRN

Market value$66.58M

3.65%

Sole

27.27M

Shared

0.00

None

0.00

INSMED INC

SOLE

NOTE 0.750% 6/0

Shares22.59M

TypePRN

Market value$53.41M

2.93%

Sole

22.59M

Shared

0.00

None

0.00

JAZZ INVESTMENTS I LTD

SOLE

NOTE 2.000% 6/1

Shares48.55M

TypePRN

Market value$50.32M

2.76%

Sole

48.55M

Shared

0.00

None

0.00

SPDR S&P 500 ETF TR

SOLE

TR UNIT

Shares81.03K

TypeSH

Market value$45.33M

2.49%

Sole

81.03K

Shared

0.00

None

0.00

IONIS PHARMACEUTICALS INC

SOLE

NOTE 4/0

Shares45.01M

TypePRN

Market value$44.55M

2.45%

Sole

45.01M

Shared

0.00

None

0.00

PENN ENTERTAINMENT INC

SOLE

NOTE 2.750% 5/1

Shares33.70M

TypePRN

Market value$34.59M

1.90%

Sole

33.70M

Shared

0.00

None

0.00

VANGUARD INDEX FDS

SOLE

S&P 500 ETF SHS

Shares66.57K

TypeSH

Market value$34.21M

1.88%

Sole

66.57K

Shared

0.00

None

0.00

MARRIOTT VACATIONS WORLDWIDE

SOLE

NOTE 1/1

Shares33.30M

TypePRN

Market value$31.93M

1.75%

Sole

33.30M

Shared

0.00

None

0.00

PEABODY ENGR CORP

SOLE

NOTE 3.250% 3/0

Shares25.02M

TypePRN

Market value$26.00M

1.43%

Sole

25.02M

Shared

0.00

None

0.00

AXON ENTERPRISE INC

SOLE

COM

Shares47.40K

TypeSH

Market value$24.93M

1.37%

Sole

47.40K

Shared

0.00

None

0.00

SOUTHWEST AIRLS CO

SOLE

NOTE 1.250% 5/0

Shares24.50M

TypePRN

Market value$24.43M

1.34%

Sole

24.50M

Shared

0.00

None

0.00

IMAX CORP

SOLE

NOTE 0.500% 4/0

Shares22M

TypePRN

Market value$24.27M

1.33%

Sole

22M

Shared

0.00

None

0.00

SHIFT4 PMTS INC

SOLE

NOTE 12/1

Shares21.26M

TypePRN

Market value$24.25M

1.33%

Sole

21.26M

Shared

0.00

None

0.00

ISHARES TR

SOLE

20 YR TR BD ETF

Shares244.80K

TypeSH

Market value$22.28M

1.22%

Sole

244.80K

Shared

0.00

None

0.00

VENTAS RLTY LTD PARTNERSHIP

SOLE

NOTE 3.750% 6/0

Shares17M

TypePRN

Market value$21.84M

1.20%

Sole

17M

Shared

0.00

None

0.00

MICROSTRATEGY INC

SOLE

NOTE 0.875% 3/1

Shares15.40M

TypePRN

Market value$21.81M

1.20%

Sole

15.40M

Shared

0.00

None

0.00

TRAVERE THERAPEUTICS INC

SOLE

NOTE 2.500% 9/1

Shares21.11M

TypePRN

Market value$20.83M

1.14%

Sole

21.11M

Shared

0.00

None

0.00

AMERICAN AIRLS GROUP INC

SOLE

COM

Shares1.94M

TypeSH

Market value$20.47M

1.12%

Sole

1.94M

Shared

0.00

None

0.00

SNAP INC

SOLE

NOTE 0.750% 8/0

Shares18.89M

TypePRN

Market value$18.31M

1.01%

Sole

18.89M

Shared

0.00

None

0.00

ALLIANT ENERGY CORP

SOLE

NOTE 3.875% 3/1

Shares16.45M

TypePRN

Market value$17.70M

0.97%

Sole

16.45M

Shared

0.00

None

0.00

KIMCO RLTY CORP

SOLE

DP CV CL N 7.25%

Shares292.60K

TypeSH

Market value$17.60M

0.97%

Sole

292.60K

Shared

0.00

None

0.00

INVESCO EXCHANGE TRADED FD T

SOLE

S&P500 EQL WGT

Shares101.49K

TypeSH

Market value$17.58M

0.96%

Sole

101.49K

Shared

0.00

None

0.00

TRANSOCEAN INC

SOLE

DEB 4.625% 9/3

Shares13.89M

TypePRN

Market value$16.91M

0.93%

Sole

13.89M

Shared

0.00

None

0.00

Issuer	Class	Shares	Type	Value / Portfolio %	Voting — Sole
MICROSTRATEGY INCSOLE	CL A NEW	251.90K	SH	$72.62M 3.99%	251.90K
AMERICAN AIRLINES GROUP INCSOLE	NOTE 6.500% 7/0	67.18M	PRN	$67.33M 3.70%	67.18M
STRIDE INCSOLE	NOTE 1.125% 9/0	27.27M	PRN	$66.58M 3.65%	27.27M
INSMED INCSOLE	NOTE 0.750% 6/0	22.59M	PRN	$53.41M 2.93%	22.59M
JAZZ INVESTMENTS I LTDSOLE	NOTE 2.000% 6/1	48.55M	PRN	$50.32M 2.76%	48.55M
SPDR S&P 500 ETF TRSOLE	TR UNIT	81.03K	SH	$45.33M 2.49%	81.03K
IONIS PHARMACEUTICALS INCSOLE	NOTE 4/0	45.01M	PRN	$44.55M 2.45%	45.01M
PENN ENTERTAINMENT INCSOLE	NOTE 2.750% 5/1	33.70M	PRN	$34.59M 1.90%	33.70M
VANGUARD INDEX FDSSOLE	S&P 500 ETF SHS	66.57K	SH	$34.21M 1.88%	66.57K
MARRIOTT VACATIONS WORLDWIDESOLE	NOTE 1/1	33.30M	PRN	$31.93M 1.75%	33.30M
PEABODY ENGR CORPSOLE	NOTE 3.250% 3/0	25.02M	PRN	$26.00M 1.43%	25.02M
AXON ENTERPRISE INCSOLE	COM	47.40K	SH	$24.93M 1.37%	47.40K
SOUTHWEST AIRLS COSOLE	NOTE 1.250% 5/0	24.50M	PRN	$24.43M 1.34%	24.50M
IMAX CORPSOLE	NOTE 0.500% 4/0	22M	PRN	$24.27M 1.33%	22M
SHIFT4 PMTS INCSOLE	NOTE 12/1	21.26M	PRN	$24.25M 1.33%	21.26M
ISHARES TRSOLE	20 YR TR BD ETF	244.80K	SH	$22.28M 1.22%	244.80K
VENTAS RLTY LTD PARTNERSHIPSOLE	NOTE 3.750% 6/0	17M	PRN	$21.84M 1.20%	17M
MICROSTRATEGY INCSOLE	NOTE 0.875% 3/1	15.40M	PRN	$21.81M 1.20%	15.40M
TRAVERE THERAPEUTICS INCSOLE	NOTE 2.500% 9/1	21.11M	PRN	$20.83M 1.14%	21.11M
AMERICAN AIRLS GROUP INCSOLE	COM	1.94M	SH	$20.47M 1.12%	1.94M
SNAP INCSOLE	NOTE 0.750% 8/0	18.89M	PRN	$18.31M 1.01%	18.89M
ALLIANT ENERGY CORPSOLE	NOTE 3.875% 3/1	16.45M	PRN	$17.70M 0.97%	16.45M
KIMCO RLTY CORPSOLE	DP CV CL N 7.25%	292.60K	SH	$17.60M 0.97%	292.60K
INVESCO EXCHANGE TRADED FD TSOLE	S&P500 EQL WGT	101.49K	SH	$17.58M 0.96%	101.49K
TRANSOCEAN INCSOLE	DEB 4.625% 9/3	13.89M	PRN	$16.91M 0.93%	13.89M

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