's shares surged to 38.25p by around 10.30 this morning, but they have since dropped back and are now trading at 27.61p, which is still well above its average price of less than 20p.
However, the video search engine, which was founded in 2004, has played down the suggestion of possible takeover bids.
The company said in a statement: "The board of blinkx plc notes the recent increase in the company's share price and confirms that it is not aware of any external bids or bid-related reason for the movement."
Blinx floated on London's junior AIM market in May last year after merging with UK search engine Autonomy.
Analysts said this may be where the speculation is stemming from, as after May 24, a clause expires which stipulates that $50m should be paid to Autonomy in the event of a buyout.
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