GROUP ONE TRADING LLC

Q3 2026 13F-HR Holdings

Location
Chicago, IL
Holdings as of
9/30/2026
Date filed
11/10/2026
Form type
13F-HR
Num holdings
8,042
Total value ($000)
$73,342,833
Net value change ($000)
+2,261,344 (3.2%)
New positions
623
Sold out positions
639
Turnover %
37.0%
Sector allocation + QoQ delta (equities-only)
Prev filing: 8/13/2026 Next filing: — SEC filing

Snapshot: Change Analysis

Compared to Q2 2026
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)
XBI 34,617 NEW
GLD 34,492 NEW
MU 34,265 40.7%
SK HYNIX INC 29,774 NEW
NBIS 28,921 NEW
DELL 28,234 NEW
HPE 26,080 NEW
INTC 24,141 164.3%
USO 23,310 411.5%
KWEB 17,492 83.4%
Top Reduces (Value $000, Stocks/ETFs)
ROUNDHILL ETF TRUST -100,452 -92.5%
TSM -92,280 -100.0%
MRVL -33,069 -59.4%
BKNG -25,419 -74.4%
MAR -23,677 -100.0%
DASH -22,869 -100.0%
FCEL -21,924 -87.4%
COHR -20,546 -97.2%
LITE -19,185 -100.0%
PLTR -18,527 -100.0%
Instrument mix + QoQ Δ (ex-options)
Derivatives reported exposure ($000): 70,076,095 (95.5% 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.
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Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type