The American Stock Exchange began trading options Wednesday on a new e-commerce index under the ticker symbol ICX. Developed in conjunction with online financial news service TheStreet.com Inc, the new equity index is comprised of fifteen actively-traded companies that generate all or a significant portion of their revenue from commerce conducted over the internet. The Amex says the idea is that options on ICX will allow investors to fine-tune the performance of investments in the e-commerce sector by creating opportunities for profit or managing downside risk. TheStreet.com E-commerce Index consists of the stocks of the following 15 companies: Amazon.com Inc, Hollywood Entertainment Corp, Ameritrade Holding Corp, Micro Warehouse Inc, Barnes & Noble Inc, N2K Inc, BroadVision Inc, National Media Corp, CDnow Inc, OnSale Inc, E*Trade Group Inc, Peapod, Inc, eBay Inc, Preview Travel Inc and Egghead.com Inc.