CSS LLC/IL

Q3 2025 13F-HR Holdings

Location
Chicago, IL
Holdings as of
9/30/2025
Date filed
11/13/2025
Form type
13F-HR
Num holdings
985
Total value ($000)
$2,229,410
Net value change ($000)
+84,860 (4.0%)
New positions
138
Sold out positions
129
Turnover %
49.8%
Sector allocation + QoQ delta (equities-only)
Prev filing: 8/14/2025 Next filing: 2/17/2026 SEC filing

Snapshot: Change Analysis

Compared to Q2 2025
Methodology: sector metrics are equities-only; instrument mix chart is ex-options; options exposure is shown separately. Why this matters.
Top Adds (Value $000, Stocks/ETFs)
SPY 14,192 NEW
BRKR 10,788 NEW
China Fund, Inc. 10,774 532.3%
WOLF 8,582 NEW
DMII 8,125 NEW
GTLS 8,087 445.8%
BDCI 7,150 NEW
CEPF 6,620 NEW
89bio, Inc. 6,021 NEW
WENN 5,542 NEW
Top Reduces (Value $000, Stocks/ETFs)
BTSG -32,613 -98.7%
NEE -30,302 -100.0%
BAC -18,232 -79.7%
EPR -10,567 -74.5%
BPMC -7,676 -100.0%
AZEK -7,124 -100.0%
FOUR -7,092 -100.0%
WENN -6,781 -100.0%
SOFI -5,800 -100.0%
JEQ -4,795 -92.8%
Instrument mix + QoQ Δ (ex-options)
Derivatives reported exposure ($000): 549,690 (24.7% of total reported value)
How this table is calculated: SEC VALUE ($000) is used as reported. For derivatives (PUT/CALL/WARRANT/RIGHT), SEC value represents reported underlying exposure, not premium cash paid/received. Column % is bucket-based: non-options share is calculated inside non-option total, options share is calculated inside options total. Details.
Filter:
Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type