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CARBO CERAMICS INC
CARBO CERAMICS INC. Institutional holdings reported to the SEC.

Institutional Holders (2014Q4)
Portfolio Summary: 5 Institutional holders with a total value of $6,310,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 GROUP ONE TRADING LLC 95,500 3,825,000 60.62% Put
2 CITADEL ADVISORS LLC 36,500 1,462,000 23.17% Put
3 SIMPLEX TRADING, LLC 189 539,000 8.54% Put
4 Timber Hill LLC 12,000 481,000 7.62% Put
5 STIFEL FINANCIAL CORP 100 3,000 0.05%

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.