July 22, 2010:
Adjusted Position and Exercise Limit for certain Equity Option Class will revert to a New Adjusted Position and Exercise Limit effective August 23, 2010
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July 22, 2010:
Exchange Traded Fund and Equity Position and Exercise Limits will be decreased to a Lower Tier Limit Effective August 23, 2010
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July 16, 2010:
Arena Resources, Inc. ("ARD") Merger COMPLETED with SandRidge Energy, Inc. ("SD")
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July 08, 2010:
Adjusted Position and Exercise Limits for certain Equity Option Classes will revert to either their Applicable Standard or Adjusted Position and Exercise Limits effective July 19, 2010
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July 08, 2010:
Exchange Traded Fund, HOLDRs? and Equity Position and Exercise Limits will be decreased to a Lower Tier Limit Effective July 19, 2010
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July 06, 2010:
Waste Services, Inc. ("WSII") Merger COMPLETED with IESI-BFC Ltd. ("BIN")
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June 28, 2010:
XTO Energy, Inc. ("XTO") Merger COMPLETED with Exxon Mobil Corporation ("XOM")
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June 04, 2010:
Youbet.com, Inc. ("UBET") Merger COMPLETED with Churchill Downs Incorporated ("CHDN")
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June 02, 2010:
RiskMetrics Group, Inc. ("RISK") Merger COMPLETED with MSCI Inc. Class A ("MXB")
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May 28, 2010:
Adjusted Position and Exercise Limits for certain Equity Option Classes will revert to either their Applicable Standard or Adjusted Position and Exercise Limits effective June 21, 2010
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