UPDATE 1-Mexican tycoon Slim set to launch full bid for Spanish builder FCC
* Slim will buy into and guarantee a rights issue
* He is set to launch a full takeover bid after that
* Shareholders pact preventing full control will be revised
* Shares jump more than 12 percent on the news (Adds details, background)
By Carlos Ruano
MADRID, Feb 4 (Reuters) - Mexican billionaire Carlos Slim is set to launch a full takeover bid for Spanish building and infrastructures firm FCC after a planned rights issue due to be approved soon, a source familiar with the matter said.
Slim's holding company Inversora Carso group, is currently FCC's main shareholder with a 27.43 percent stake, closely followed by Esther Koplowitz, whose father founded the firm 70 years ago, with 22.44 percent.
But a 710 million euros ($794.92 million) cash call announced in December, which Slim has committed to buy into and guarantee, will likely push his stake above the 30 percent threshold that would require him to launch a full bid under Spanish regulations.
Last month Slim bought close to 2 percent of the company's share capital, according to filings to Spain's stock market regulator. Continuación...