Dark
Light
System
Security
CLIFFS NAT RES INC
CLIFFS NAT RES INC. Institutional holdings reported to the SEC.

Institutional Holders (2014Q4)
Portfolio Summary: 9 Institutional holders with a total value of $62,121,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 KGH Ltd 35,680 40,073,000 64.51% Put
2 GROUP ONE TRADING LLC 1,777,400 12,691,000 20.43% Put
3 CITADEL ADVISORS LLC 491,100 3,506,000 5.64% Put
4 SG Americas Securities, LLC 706,400 1,501,000 2.42% Put
5 LOEWS CORP 200,000 1,428,000 2.30% Put
6 SIMPLEX TRADING, LLC 1,535 1,096,000 1.76% Put
7 Timber Hill LLC 130,300 930,000 1.50% Put
8 Marathon Trading Investment Management LLC 75,000 535,000 0.86% Put
9 Virtu KCG Holdings LLC 50,500 361,000 0.58% Put

From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.