Benzinga's Microcap Movers for Friday September 21, 2012

Below are highlights from Benzinga's daily coverage of small cap and microcap securities making big moves:

Shares of AXT

, the Freemont, CA manufacturer and distributor of high-performance compound semiconductor substrates, rose 12.66% Friday on 8.5 times average volume. There was no specific company news on Friday to account for the move. There was chatter on the stock's Yahoo message board regarding a possible takeover or LBO. AXT closed at $3.47 on Friday.

Shares of SunLink Health Systems

, the Atlanta, GA provider of health care facilities, services, products, doctors and professionals, rose 19.01% Friday on 35 times average volume. SunLink Health Systems announced Friday earnings from continuing operations for its fourth fiscal quarter ended June 30, 2012 of $4,213,000, or $0.45 per fully diluted share, compared to a loss from continuing operations of $10,708,000, or a loss of $1.32 per fully diluted share, for the quarter ended June 30, 2011. SunLink Health Systems closed at $1.44 on Friday.

Alvarion

, the Israel-based wireless broadband company, rose 14.73% Friday on 12 times average volume. There was unconfirmed chatter on Friday that a well-known stock promoter was behind Alvarion. Alvarion closed at $0.42 on Friday.