per deadline.com:

"Don’t underestimate the box office traction of Warner Bros. Suicide Squad. In its fifth day at the box office, the David Ayer DC villain movie took in $14.27M, up 9% from Monday. Of course, that’s a record Tuesday in August, and as we’ve seen all along, Suicide Squad keeps whomping Disney/Marvel’s Guardians of the Galaxy records. That film previously owned the Tuesday high for August with $11.9M. But here’s what Suicide Squad‘s till yesterday outflanks when it comes to Tuesday highs: Captain America: Civil War‘s at $13.76M, Avengers: Age of Ultron‘s $13.1M and Batman v. Superman‘s $12.7M Tuesday.

Through five days, Suicide Squad has collected $161.1M. It will rule again in its second weekend with $51M-$54M as three wide entries enter the market — Sony/Annapurna’s Sausage Party, Disney’s Pete’s Dragon and Paramount’s Florence Foster Jenkins.

...

That’s a 60%-61% decline from its August-record debut of $133.7M, and while that descent isn’t as steep as Batman v. Superman: Dawn of Justice (-69%), insiders point to the young crowd, those under 35, who turned up at 76% last weekend and blessed DC’s latest with an A- CinemaScore for boosting Suicide Squad‘s fortune. That’s the demo preventing Suicide Squad from being a critics’ casualty ala BvS.

On Monday, the David Ayer movie clocked $13.1M, which is the best Monday take for an August release, besting Guardians of the Galaxy‘s $11.7M on Monday, August 4, 2014."