CSS LLC/IL

CIK

1103646

Location

CHICAGO, IL

Portfolio Value

Mid $1,097,160,612

Diversification

Diversified

Filing Date

Global Rank

#2,351 / 8,817 ▲ 239

Top Industry

Shell Companies 16.7%

Period ended 4 months ago

Filed Aug 14, 2026 · 2mo

26 quarters · since Mar 2020

Regulatory profile

From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.

Holder type

Unknown

Portfolio style

Measured from the filed 13F common-share book for Jun 30, 2026, never from the firm's own description.

Style

Diversified active

Top 10 weight 27.4%, 81.5 effective positions, active share 81.5% against every 13F filer's combined book; it meets none of the index-like, systematic-like or concentrated tests

Turnover

High turnover

101.0% over the last four quarters (100%+)

Horizon

Horizon unknown

The value-weighted holding period is at least 5.9 quarters, but 4.1% of the book was already held when coverage starts

Closest benchmark: every 13F filer's combined book, active share 81.5%; sector active share 23.5% against the combined 13F book's sector weights.

Over time 26 measured quarters

How the bands are measured

Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.

Clone Performance

Build a hypothetical price-return history from this filer's public 13F holdings.

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Portfolio Concentration

741 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026

Top Position

4.9%

+0.3 pts

Top 5

16.7%

+0.3 pts

Top 10

26.7%

+0.8 pts

HHI

106

Diversified+8

Portfolio Trend

26 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026

Sector	% Portfolio	Value	Positions
Financial Services	25.9%	$284,270,333	262
Technology	20.6%	$225,925,643	110
Unclassified	16.5%	$181,154,882	44
Healthcare	8.8%	$96,403,198	64
Communication Services	6.4%	$70,133,272	36
Consumer Cyclical	6.2%	$68,104,687	46
Industrials	5.4%	$59,311,402	71
Energy	5.2%	$56,773,571	33
Consumer Defensive	1.6%	$17,688,181	22
Utilities	1.5%	$16,797,706	19
Real Estate	1.3%	$14,739,903	19
Basic Materials	0.5%	$5,857,834	15

Last Quarter's Activity

Export CSV

Jun 30, 2026 vs Mar 31, 2026

Added To

Positions the filer increased

25 positions

Ticker	Company	Δ Shares	Shares	Value
EVAC	EQV Ventures Acquisition Corp. II	+554,715	673,659	$6,857,848
ARTC	Art Technology Acquisition Corp.	+396,263	487,763	$4,843,486
CORZW	Core Scientific, Inc.	+268,373	2,351,492	$0
GENVR	Gen Digital Inc.	+251,492	331,431	$419,260
IMXI	International Money Express, Inc.	+197,733	268,680	$3,882,426
—		+160,694	176,575	$9,173,071
BLRKW	Bluerock Acquisition Corp.	+153,597	288,064	$0
ELME	Elme Communities	+150,700	703,959	$1,041,859
TACHW	Titan Acquisition Corp.	+120,155	1,222,748	$0
CRGY	Crescent Energy Co	+110,001	187,877	$1,844,952
FCT	First Trust Senior Floating Rate Income Fund II	+89,255	106,858	$0
AISPW	Airship AI Holdings, Inc.	+77,370	293,744	$0
IONS	Ionis Pharmaceuticals Inc	+73,196	152,289	$12,074,994
RVMDW	Revolution Medicines, Inc.	+60,862	78,367	$0
SSTK	Shutterstock, Inc.	+56,138	139,832	$1,950,656
TWOD	Two Harbors Investment Corp.	+53,742	78,175	$1,950,466
DBCA	D. Boral Acquisition I Corp.	+50,000	298,000	$2,971,060
LSTA	Lisata Therapeutics, Inc.	+48,524	110,422	$375,434
AES	Aes Corp	+48,400	101,900	$1,493,854
JOF	Japan Smaller Capitalization Fund Inc	+43,387	68,679	$809,038
DAAQ	Digital Asset Acquisition Corp.	+36,502	405,083	$4,204,761
MTDR	Matador Resources Co	+36,401	71,602	$3,564,347
—		+34,424	44,924	$0
—		+31,000	60,000	$990,600
BDCI	BTC Development Corp.	+29,458	232,617	$2,342,453
No positions match the current search.

Trimmed

Positions the filer reduced

25 positions

Ticker	Company	Δ Shares	Shares	Value
TDACW	Translational Development Acquisition Corp.	−402,135	179,902	$0
ATIIW	Archimedes Tech SPAC Partners II Co.	−335,901	151,718	$0
SVIA	Silvia, Inc.	−277,745	1,270,755	$1,956,962
PTOR	Praetorian Acquisition Corp.	−193,440	203,613	$2,021,877
IACOU	Idea Acquisition Corp.	−183,956	16,044	$160,760
FIGX	FIGX Capital Acquisition Corp.	−139,145	160,654	$1,643,490
RSF	RiverNorth Capital & Income Fund, Inc.	−132,229	148,230	$2,167,122
TACOW	Berto Acquisition Corp.	−130,969	88,938	$0
RDAG	Republic Digital Acquisition Co	−105,188	240,764	$2,484,684
MEVO	M Evo Global Acquisition Corp II	−100,100	161,290	$1,599,996
ADAC	American Drive Acquisition Co	−97,799	15,899	$159,307
TACO	Berto Acquisition Corp.	−94,072	270,809	$2,840,786
MLAA	Mountain Lake Acquisition Corp. II	−85,735	104,501	$1,037,694
YEXT	Yext, Inc.	−85,000	23,893	$111,580
LPBB	Launch Two Acquisition Corp.	−65,409	263,211	$2,821,621
IBIT	iShares Bitcoin Trust ETF	−59,889	2,922	$97,273
XRXDW	Xerox Holdings Corp	−49,152	834,613	$0
—		−48,620	40,966	$0
LPBBW	Launch Two Acquisition Corp.	−42,602	907,771	$0
IVZ	Invesco Ltd.	−42,460	13,473	$355,552
—		−39,500	56,899	$587,197
CAF	Morgan Stanley China A Share Fund, Inc.	−36,601	42,331	$890,644
VLOSW	Velos Acquisition I Corp.	−31,601	656,527	$0
KDKRW	Kodiak AI, Inc.	−31,474	119,286	$88,271
PMTR	Perimeter Acquisition Corp. I	−28,444	19,791	$206,222
No positions match the current search.

New Positions

Positions the filer opened this quarter

25 positions

Ticker	Company	Shares	Value
SMCIP	Super Micro Computer, Inc.	878,227	$45,632,674
MCHPP	Microchip Technology Inc	558,552	$42,846,523
GOOGN	Alphabet Inc.	266,589	$13,409,426
SPY	Spdr S&P 500 ETF Trust	17,269	$12,895,971
OHAC	Oceanhawk Acquisition Corp.	1,038,610	$10,282,239
JAZZ	Jazz Pharmaceuticals plc	29,041	$6,998,009
GOOGM	Alphabet Inc.	125,200	$6,371,428
CUB	Lionheart Holdings	507,589	$5,466,733
AZUL	Azul SA	597,806	$5,374,275
TRGS	TRG Latin America Acquisitions Corp.	532,949	$5,270,865
—		169,320	$5,140,555
KEYY	Keystone Acquisition Corp.	451,508	$4,451,868
CAES	Cantor Equity Partners VII, Inc.	375,000	$3,783,750
IPFX	Inflection Point Acquisition Corp. VI	355,646	$3,677,379
CAII	Collective Acquisition Corp. II	350,180	$3,466,782
DRDB	Roman DBDR Acquisition Corp. II	229,854	$2,421,511
YICCU	Yorkville International Capital Corp.	200,000	$2,008,000
MTAL	Metals Acquisition Corp. II	196,180	$1,991,227
PSLV	Sprott Physical Silver Trust	82,585	$1,558,378
BAC	Bank Of America Corp	25,010	$1,425,069
CECO	Ceco Environmental Corp	15,531	$1,409,282
QADR	QDRO Acquisition Corp.	141,604	$1,403,295
LYV	Live Nation Entertainment, Inc.	7,516	$1,376,254
HCAC	Hall Chadwick Acquisition Corp	136,900	$1,374,476
TVIVU	Texas Ventures Acquisition IV Corp	125,000	$1,250,000
No positions match the current search.

Sold Out

Positions the filer fully exited

25 positions

Ticker	Company	Shares	Value
IRHO	Iron Horse Acquisition II Corp.	737,555	$7,272,292
GLD	Spdr Gold Trust	12,623	$5,431,550
TRGSU	TRG Latin America Acquisitions Corp.	533,252	$5,305,857
IPFXU	Inflection Point Acquisition Corp. VI	405,666	$4,105,339
BCSS	Bain Capital GSS Investment Corp.	387,390	$3,917,287
BXBL	BOXABL Inc.	352,136	$3,556,573
QADRU	QDRO Acquisition Corp.	223,905	$2,218,898
ALF	Centurion Acquisition Corp.	150,681	$1,621,327
SLV	iShares Silver Trust	23,530	$1,603,334
TLT	iShares 20+ Year Treasury Bond ETF	17,670	$1,531,812
PSA	Public Storage	5,100	$1,381,488
PAACU	Proem Acquisition Corp. I	119,542	$1,196,615
OSIS	Osi Systems Inc	4,500	$1,194,795
PG	PROCTER & GAMBLE Co	8,070	$1,165,630
DMII	Drugs Made In America Acquisition II Corp.	110,042	$1,097,118
CVS	CVS HEALTH Corp	14,361	$1,031,407
XRAY	DENTSPLY SIRONA Inc.	87,684	$1,017,134
IWM	iShares Russell 2000 ETF	3,628	$899,744
VLOS	Velos Acquisition I Corp.	73,352	$787,800
CRBG	Corebridge Financial, Inc.	32,281	$770,224
WIX	Wix.com Ltd.	8,442	$760,370
WDAY	Workday, Inc.	5,731	$744,571
DLB	Dolby Laboratories, Inc.	11,878	$713,392
FAC	Factorial Energy Inc.	68,644	$703,944
ASH	Ashland Inc.	12,622	$701,909
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

741 tracked positions · $1,097,160,612 total · filing declares 1,001 positions · $2,568,508,626 · as of Jun 30, 2026

All sectors Basic Materials Communication Services Consumer Cyclical Consumer Defensive Energy Financial Services Healthcare Industrials Real Estate Technology Utilities

Showing 1–50 of 741 positions by value · page 1 of 15

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	Held (qtrs)	Est. cost/share	% of Portfolio
SMCIP	Super Micro Computer, Inc. Technology	NEW	878,227	NEW	$45,632,674	NEW	1	unpriced	4.16%
MCHPP	Microchip Technology Inc Technology	NEW	558,552	NEW	$42,846,523	NEW	1	$75.88	3.91%
SPY	Spdr S&P 500 ETF Trust PUT CALL + SHARES	Added	38,769	+12,269	$28,951,526	+68.0%	1	$725.01	2.64%
GME	GameStop Corp. PUT CALL + SHARES Consumer Cyclical	Added	1,291,960	+69,600	$28,526,476	+1.3%	3	$22.44	2.60%
PEN	Penumbra Inc PUT CALL + SHARES Healthcare	Added	75,740	+1,500	$23,914,905	−1.9%	2	$337.63	2.18%
RSP	Victory Portfolios II CALL + SHARES	Reduced	105,272	-5,710	$22,398,723	+5.2%	11	$168.56	2.04%
VOO	VANGUARD 500 INDEX FUND	Held	32,210	0	$22,122,150	+14.9%	11	unpriced	2.02%
KMI	Kinder Morgan, Inc. PUT Energy	NEW	678,900	NEW	$21,704,433	NEW	—	—	1.98%
WDC	Western Digital Corp Technology	Reduced	24,933	-500	$15,925,205	+131.5%	7	unpriced	1.45%
	PUT CALL + SHARES	Added	76,081	+51,281	$15,599,648	+208.5%	3	$202.27	1.42%
IAU	Ishares Gold Trust	Held	200,040	0	$15,105,020	−14.3%	11	$45.79	1.38%
GOOGN	Alphabet Inc. Communication Services	NEW	266,589	NEW	$13,409,426	NEW	1	unpriced	1.22%
TLT	iShares 20+ Year Treasury Bond ETF PUT CALL	Reduced	145,000	-52,670	$12,530,900	−26.9%	—	—	1.14%
IONS	Ionis Pharmaceuticals Inc Healthcare	Added	152,289	+71,196	$12,074,994	+98.3%	2	$77.16	1.10%
OHAC	Oceanhawk Acquisition Corp. Financial Services	NEW	1,038,610	NEW	$10,282,239	NEW	1	unpriced	0.94%
	PUT CALL + SHARES	Added	188,375	+168,494	$9,786,081	—	7	unpriced	0.89%
SMCI	Super Micro Computer, Inc. PUT CALL + SHARES Technology	Added	289,835	+143,435	$8,500,860	+155.0%	1	$31.86	0.77%
STEW	SRH Total Return Fund, Inc. Financial Services	Held	461,965	0	$8,269,173	+4.7%	26+	before history	0.75%
DBRHP	DigitalBridge Group, Inc. PUT + SHARES Financial Services	Reduced	545,996	-23,452	$8,140,800	−11.9%	2	$18.22	0.74%
TACH	Titan Acquisition Corp. Financial Services	Held	708,268	0	$7,373,069	+1.2%	5	unpriced	0.67%
JAZZ	Jazz Pharmaceuticals plc Healthcare	NEW	29,041	NEW	$6,998,009	NEW	1	$219.08	0.64%
EVAC	EQV Ventures Acquisition Corp. II Financial Services	Added	673,659	+554,715	$6,857,848	+471.4%	4	$10.11	0.63%
IMXI	International Money Express, Inc. PUT CALL + SHARES Technology	Added	461,780	+373,333	$6,672,721	+377.5%	4	$14.78	0.61%
WENN	WEN Acquisition Corp Financial Services	Held	647,631	0	$6,664,122	+1.1%	4	$10.19	0.61%
XLE	State Street(R) Energy Select Sector SPDR(R) ETF PUT + SHARES	Added	121,186	+89,266	$6,436,188	+229.1%	2	$53.64	0.59%
GOOGM	Alphabet Inc. Communication Services	NEW	125,200	NEW	$6,371,428	NEW	1	unpriced	0.58%
DBMF	iMGP DBI Managed Futures Strategy ETF	Held	205,764	0	$6,298,436	+1.5%	16	$29.32	0.57%
SWZ	Total Return Securities Fund	Added	1,040,190	+19,643	$6,178,728	+2.1%	26+	before history	0.56%
BE	Bloom Energy Corp PUT CALL + SHARES Industrials	Added	19,697	+100	$5,962,281	+124.6%	5	$42.57	0.54%
FOUR	Shift4 Payments, Inc. PUT + SHARES Technology	Reduced	116,271	-12,656	$5,655,421	+0.3%	2	$54.15	0.52%
ECHO	EchoStar CORP PUT + SHARES Communication Services	Added	54,642	+7,442	$5,546,163	+0.4%	1	$122.23	0.51%
RVMD	Revolution Medicines, Inc. PUT Healthcare	Added	29,600	+22,300	$5,543,488	+680.9%	—	—	0.51%
CUB	Lionheart Holdings Financial Services	NEW	507,589	NEW	$5,466,733	NEW	1	$10.81	0.50%
AZUL	Azul SA Industrials	NEW	597,806	NEW	$5,374,275	NEW	1	$8.84	0.49%
GLD	Spdr Gold Trust PUT CALL	Reduced	14,500	-37,623	$5,341,510	−76.2%	—	—	0.49%
AAL	American Airlines Group Inc. PUT Industrials	Reduced	292,500	-289,800	$5,285,475	−15.5%	—	—	0.48%
TRGS	TRG Latin America Acquisitions Corp. Financial Services	NEW	532,949	NEW	$5,270,865	NEW	1	$9.88	0.48%
		NEW	169,320	NEW	$5,140,555	NEW	1	unpriced	0.47%
AACIU	Armada Acquisition Corp. III Financial Services	Reduced	499,959	-41	$5,039,586	+1.2%	2	$9.97	0.46%
MTSI	MACOM Technology Solutions Holdings, Inc. Technology	Added	13,148	+1,900	$5,001,104	+100.2%	3	$194.66	0.46%
MSTR	Strategy Inc PUT CALL + SHARES Technology	Reduced	56,332	-58,268	$4,896,940	−65.8%	1	$145.16	0.45%
ARTC	Art Technology Acquisition Corp. Financial Services	Added	487,763	+396,263	$4,843,486	+439.6%	2	unpriced	0.44%
MARA	MARA Holdings, Inc. PUT Financial Services	Reduced	341,400	-15,000	$4,742,046	+63.1%	—	—	0.43%
LKSP	Lake Superior Acquisition Corp Financial Services	Held	465,598	0	$4,721,163	+0.9%	3	$9.92	0.43%
		Held	454,422	0	$4,694,179	+1.1%	5	unpriced	0.43%
BRW	Saba Capital Income & Opportunities Fund Financial Services	Reduced	686,484	-21,758	$4,510,199	−5.5%	21	unpriced	0.41%
KEYY	Keystone Acquisition Corp. Financial Services	NEW	451,508	NEW	$4,451,868	NEW	1	unpriced	0.41%
SM	SM Energy Co CALL + SHARES Energy	Added	169,775	+63,668	$4,431,127	+33.9%	3	$22.47	0.40%
NVDA	Nvidia Corp PUT CALL + SHARES Technology	Added	21,346	+1,246	$4,271,121	+21.8%	1	$205.61	0.39%
LLYVA	Liberty Live Holdings, Inc. Communication Services	Held	41,755	0	$4,228,111	+10.5%	3	$83.24	0.39%

Showing the top 50 of 741 positions. Create a free account to see every position, past quarters, search, filters and CSV export.

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.