(RBCN, SIBC, ERIE, AMTD) Stock Updates by CRWEWallStreet.com

Rubicon Technology, Inc. (NASDAQ:RBCN), a leading provider of sapphire substrates and products to the LED, RFIC, semiconductor, and optical industries, announced that it has entered into a new contract with its largest customer for large-diameter sapphire wafers. The amount of the contract is $20 million, and it represents a baseline level of shipments that will be made from June through December 2012. The previous contract expired at the end of December. “We are pleased that we will continue as a key supplier to our valued six-inch wafer customer in 2012,” said Raja Parvez, President and Chief Executive Officer of Rubicon. “As other LED chip manufacturers make the transition to large-diameter substrates in pursuit of greater efficiency, Rubicon—the world’s largest, most experienced and most reliable provider of large-diameter sapphire wafers—stands to benefit greatly. However, with LED chip capacity presently not fully utilized, the inflection point in demand for large-diameter sapphire wafers for LEDs is still some months in the future.” In another matter, but also related to the current market conditions, Rubicon disclosed that the Company, as an accommodation to certain key customers of its small-diameter sapphire ingots (cores), wrote off $1.8 million of accounts receivable in the fourth quarter. “The fourth quarter of 2011 was a period of limited demand for sapphire substrates resulting from the accumulation of excess inventory in the LED supply chain,” Mr. Parvez said. “This temporary decline in channel demand in turn resulted in sapphire prices falling sharply in the second half of 2011. Out of consideration for our important customer relationships, we made certain concessions that we deemed to be in the best long-term interest of our company.” Rubicon Technology, Inc. is an advanced electronic materials provider that is engaged in developing, manufacturing and selling monocrystalline sapphire and other crystalline products for light-emitting diodes (LEDs), radio frequency integrated circuits (RFICs), blue laser diodes, optoelectronics and other optical applications. More about RBCN at www.rubicon-es2.com. Read full article at: http://crwewallstreet.com/22861/stock-alerts/rbcn-sibc-erie-amtd-stock-updates-by-crwewallstreetcom/ THIS IS NOT A RECOMMENDATION TO BUY OR SELL ANY SECURITY! ****************************************************************************** Disclaimer: Never invest in any stock featured on our site or emails unless you can afford to lose your entire investment. CRWEWallStreet publisher and its affiliates and contractors are not registered investment advisers or broker/dealers. Our disclaimer is to be read and fully understood before using our site, reading our newsletter or joining our email list. Release of Liability: Through use of this website viewing or using, you agree to hold CRWEWallStreet.com report and Crown Equity Holdings Inc. CRWE, its operators, shareholders, employees and/or contractors harmless and to completely release them from any and all liability due to any and all loss (monetary or otherwise), damages (monetary or otherwise) that you may occur.(Read more at http://crwewallstreet.com/disclaimer) Rule 17B requires disclosure of payment for investor relations. Crown Equity Holdings Inc. (CRWE.OB) is a media-advertisement and newswire company. Crown Equity Holdings Inc. (CRWE.OB), in some cases, provides media advertising and public awareness for both public and private companies, as well as disseminating news. As such, in some cases, when Crown Equity Holdings Inc. (CRWE.OB) advertises for a particular client, Crown Equity Holdings Inc. (CRWE.OB) charges an advertising fee which it must disclose under 17B. The fee may be in cash, in free trading stock or in restricted stock. Crown Equity Holdings Inc. (CRWE.OB), if paid in stock, can and may sell those securities during the advertising period.