Shares in American Reprographics Co. began trading on the New York Stock Exchange on Friday, Feb. 4, when the company priced its initial public offering at $13. The Glendale-based company, which filed its IPO in October, raised $99.7 million in initial trading. On Monday, shares in American Reprographics closed at $13.80 after hitting a high of $14 per share. The underwriters for the offering were Goldman Sachs & Col., J.P. Morgan, CS First Boston, Robert W. Baird & Co. and CIBC World Markets. . climbed in early trading to close at $13.80 on Monday, Feb. 7. The Glendale-based company, which filed an initial public offering in October, on Friday priced its shares at $13. IPO in ,