Below are interesting stocks on the NYSE and NASDAQ that are the highest gainers.

Columbia Bancorp (NASDAQ: CBBO) shares have appreciated by 40.51% since its last closing. CBBO shares have slipped by 69.55% over the past 52 weeks.

Clark Holdings Inc (NYSE: GLA) shares have appreciated by 39.98% since its last closing. GLA shares have plummeted by 59.09% over the past 52 weeks.

Hooper Holmes Inc (NYSE: HH) shares have appreciated by 30.26% since its last closing. HH shares are trading at a price significantly lower than their 52-week high of $1.16.

Axcelis Technologies Inc (NASDAQ: ACLS) shares have appreciated by 29.88% since its last closing. ACLS shares are trading at a price significantly lower than their 52-week high of $1.78.

Provident Financial Holdings Inc (NASDAQ: PROV) shares have appreciated by 17.65% since its last closing. PROV shares have declined by 35.07% over the past 52 weeks.

Following are the few stocks which are moving up without any news on very unusual volume - this normally signals that either there is some news in pipeline or someone is speculating those stocks: –
Mountain Province Diamonds, Inc. (AMEX: MDM) spurted 34% with a volume of 684K shares against an average volume of 19K shares – over 35X. Currently the stock is stock is trading at $2.26, well above it 50-day and 200-day EMA.

Columbia Bancorp (NASDAQ: CBBO) is among the top percentage gainers in morning trade and surged 155 to $3.03 on huge volume of 381K shares on no news. The stock has a 52-week range of $049-$8.08.

Mountain Province Diamonds, Inc. (AMEX: MDM) rallied 46% on 468K shares and now trades at $2.45 on no news. Till now during the current calendar year the stock has surged over 200%.

Boston Private Financial Holdings Inc (NASDAQ: BPFH) is also moving higher by 26% to $6.77 after it announced the sale of RINET Company, LLC, to the RINET management team. Financial term were not disclosed.