Univision, the leading Spanish-language television network in the United States, is outpacing ABC, CBS, NBC and FOX in the number of primetime viewers in the coveted younger demographic, the company said Tuesday.

It marks the first time Univision - or any network broadcasting in a language other than English - has topped its rivals in what the industry calls a "sweeps" period: a month when ratings company Nielsen compiles detailed viewing data to guide advertisers.

The current sweeps period ends Wednesday.

"Obviously, it's an historic milestone for Univision, and frankly for Spanish-language media in general," network president Cesar Conde said. "It was a pretty substantial win."

For television networks, the months of June and July are usually the lowest in viewership and correspond to the off-season.

Univision, which is heavily watched for its soap operas, emphasized that programs such as "Despierta America," "Primer Impacto" and "El Gordo y la Flaca," as well as sports and news broadcasts, have experienced an increase in average viewership.

On March 19, Univision was the U.S. TV network most watched by adults on Friday night thanks to its soap opera "Amor Bravio," according to the Nielsen ratings.

Although this is not the first time that Univision has beaten one of the other three networks in a given month, it would be the first time for the Spanish-language network to beat all the others during an off-season month. EFE