Mid-Day Market Movers (ACPW, SIFI, ACAT, CKEC)

Active Power Inc ACPW climbed 13.33% to $1.36. ACPW's PEG ratio is -0.59. SI Financial Group Inc SIFI shares advanced 12.20% to $6.90. SIFI's quarterly earnings surged 214.89% y/y. Arctic Cat Inc ACAT shares surged 11.62% to $9.99. ACAT's earnings are likely to advance by 119.48% this year. Carmike Cinemas Inc CKEC jumped 11.42% to $8.00 at 10:07 am. CKEC has extended its long-term agreement with Screenvision for a 30-year term. Read more from Benzinga's Markets.