James Hibberd of the Hollywood Reporter has the details:

Fox News is on track to have its most-watched year ever, showing significant ratings growth despite having just come off a highflying election year.

With the second quarter coming to a close, Fox News averaged about the same number of viewers as the top three other cable news networks combined. And while rivals including CNN (-22%) and MSNBC (-18%) took hits following last quarter's inauguration-fueled boost, Fox News (-3%) remained nearly steady.

Compared with last year, the Fox News (averaging 2.1 million viewers, 509,000 adults 25-54 quarter-to-date) is up 35% over last year in primetime viewers and 48% in the demo. CNN (805,000 viewers, 210,000 in demo) fell 16% in viewers and 29% in the demo. MSNBC (787,000 viewers, 259,000 in demo) climbed 15% in viewers and about on par, -3%, in the demo. And CNN Headline News (553,000, 201,000) showed very strong growth, up 39% and 37%, respectively, and is on track for its best second quarter.

FOX's ratings now put them third behind USA and TNT among all ad supported cable networks in primetime.