GROUP ONE TRADING, L.P.

Q3 2015 13F Holdings Report, Restatement, Options Holdings

Signature - Title
Chad Grosam - Chief Financial Officer
Location
Chicago, IL
Options holdings as of
September 30, 2015
Notional value $
$6.02B
Number of holdings
3,466
Date filed
11/20/2015, 04:16 PM
Description
All US holdings of this investor are reported in this report.
Previous filing
Q2 2015 - Aug 11, 2015
Next filing
Q4 2015 - Feb 11, 2016
Stock holdings
Showing options holdings, see here for stock holdings
Sym Company Class Option Share Change Activity * Price $ Shares Notional Value
Filing 2015 Q3 - Restatement compared to 2015 Q2 by default.
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.

Person Signing this Report on Behalf of Reporting Manager:

Name Title City, State Date
CHAD GROSAM CHIEF FINANCIAL OFFICER Chicago, Illinois 11/20/2015