The letter D signifies a split that affects the number of shares outstanding, or a new issue of shares. The D that appears by the ticker warns anyone researching the company that a stock split is imminent or has just taken place. The symbol appears in the quotations issued by the exchange itself. A brokerage quotation, or a quotation appearing in the financial media, may not carry appended symbols. On average, the symbol remains for about 20 business days.
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