Carrizo Oil & Gas Set to Join the S&P SmallCap 600

              Carrizo Oil & Gas Set to Join the S&P SmallCap 600

PR Newswire

NEW YORK, Oct. 25, 2012

NEW YORK, Oct. 25, 2012 /PRNewswire/ --Carrizo Oil & Gas Inc. (NASD: CRZO)
will replace Overseas Shipholding Group, Inc. (NYSE: OSG) in the S&P SmallCap
600 index after the close of trading on Monday, October 29. Overseas
Shipholding has stated that certain of its previously issued financial
statements should no longer be relied upon, and the company is exploring
strategic options including a bankruptcy filing. Therefore, it is no longer
appropriate for the S&P SmallCap 600 index.

Carrizo Oil & Gas engages in the exploration, development, and production of
oil and gas. Headquartered in Houston, TX, the company will be added to the
S&P SmallCap 600 GICS (Global Industry Classification Standard) Oil & Gas
Exploration & Production Sub-Industry index.

Following is a summary of the change:

S&P SMALLCAP 600 INDEX – October 29, 2012
ADDED   Carrizo              Energy              Oil & Gas Exploration &
DELETED Overseas Shipholding Energy              Oil & Gas Storage &

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