Xerox’s biggest shareholder, Carl Icahn, upped his stake in Xerox (XRX) throughout the month of August (see “Carl Icahn Increases Stake in Xerox,” “Icahn Buys Even More Xerox Shares,” and “Icahn Continues to Up Stake in Xerox”). New filings with the Securities and Exchange Commission (SEC) reveal his buying spree continued in early September. A