Publicly traded companies in North America generally are required to release earnings on a quarterly basis. These announcements, which contain a host of relevant statistics, including revenue and margin data, and often projections about the company's future profitability, have the potential to cause a significant move in the market price of the company's shares. From an options trading viewpoint, anything with the potential to cause volatility in a stock affects the pricing of its options. Earnings releases are no exceptions…

The Market Center open can differ from the first reportable trade on a contract at market open, sometimes by several minutes. The opening price refers to the first reported trade from the primary exchange of which the contract is listed on. This differs from the first occurring trade that may occur across any exchange the contract is tradable on once the market has opened. …

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