First Solar Falls On Downgrade (HUSA, HEB, ZNGA, SIRI, FSLR)

First Solar, Inc.(NASDAQ:FSLR) shares dropped 10.13% to $20.27 after after receiving a downgrade to Negative from Positive from Avian, which claims the junction boxes accompanying First Solar's solar module installations are suffering from reliability issues. Avian, which smartly upgraded First Solar in May, notes the warranty on First Solar's modules lasts for 20 years.

Shares FSLR Bounce Back After Today’s Slump? Find Out Here

Houston American Energy Corporation(NYSEAMEX:HUSA) shares climbed 9.31% to $0.603 after the company announced that it has closed on its previously announced registered direct equity offering of 14,814,815 units at $0.675 per unit, with each unit consisting of one of the Company's common shares, one Class A Warrant to purchase one-half share of common stock and one Class B Warrant to purchase one half share of common stock, for gross proceeds of approximately $10.0 million, before deducting placement agent fees and offering expenses.

Hemispherx BioPharma, Inc(NYSEAMEX:HEB) shares climbed 1.25% to $0.810 in the early hour. The company, last month, said that the U.S. Food and Drug Administration or "FDA" has tentatively scheduled an Advisory Committee meeting to discuss the Ampligen New Drug Application for Chronic Fatigue Syndrome or "CFS", which is currently under review by the FDA. The date of the Advisory Committee review has been tentatively scheduled for December 20, 2012. The Prescription Drug User Fee Act review goal for the FDA to complete its review is February 2, 2013.

Zynga Inc(NASDAQ:ZNGA) shares declined 17.23% to $2.33 after the company said it expects third quarter of 2012  revenue in the range of $300 million to $305 million, net loss of between $90 million and $105 million, non-GAAP net loss between $2 million and $5 million and adjusted EBITDA between $10 million and $15 million, diluted EPS between ($0.12) and ($0.14) and non-GAAP EPS between $0.00 and ($0.01). For fiscal 2012, it expects Adjusted EBITDA projected to be in the range of $147 million to $162 million.

Additionally, several analysts lowered their price targets on Zynga Inc's stock by up to $3 per share after the company slashed its 2012 outlook for the second time due to a decline in paying customers.

Sirius XM Radio Inc(NASDAQ:SIRI) shares gained 0.56% to $2.71. The company announced that it plans to release third quarter 2012 financial and operating results on Tuesday, October 30, 2012.

Additionally, analysts at Bank of America initiated coverage on shares of Sirius in a research report issued to clients and investors this week. The firm set a “buy” rating and a $3.75 price target on the stock.