At least two investor groups are expected to submit bids today (Tuesday) to acquire Jerry Perenchio's Spanish-language broadcasting company Univision, published reports indicated. One group is led by Mexican media giant Grupo Televisa SA and Venezuelan broadcaster Venevision. Both companies already own stakes in Univision and provide the company with a significant share of its program content. The other group is led by Haim Saban, the kids-TV producer (Mighty Morphin Power Rangers) who sold most of his entertainment assets in 2001. Univision is the leading Spanish-language broadcaster in the U.S. and has seen its ratings soar in recent days as audiences in the Latino markets where it owns stations tune in in massive numbers to its World Cup coverage.