NEW YORK/PARIS, Oct 30 (Reuters) – Shares in French online advertising firm Criteo rose more than 30 percent in its stock market debut on Nasdaq on Wednesday, showing investor appetite for technology start-ups and delivering a payday to its venture capital backers.
* Focuses in on-line advertising targeting
* French start-up turns to U.S., international growth
* Criteo market value hits around $2.3 billion

Shares in the company, which uses tracking technology to target ads at consumers surfing the web, opened at $31 and were at $41.40 by 1625 GMT, giving the eight-year old start-up a market capitalisation of roughly $2.3 billion.

The sale of 8.08 million shares raised $250 million for the Paris-based company that will be used to fuel its international expansion and growth.
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