On Sunday, HBO aired the seventh episode of “It: Welcome to Derry” and the sixth episode of “I Love L.A.” to great results, with both achieving a series high.

“It: Welcome to Derry” Episode 7 hit 5.8 million viewers across HBO and HBO Max in its first three days of availability. This statistic comes from a combination of Nielsen’s measurement of linear viewers on HBO’s cable channel plus Warner Bros. Discovery’s own tally of streams on HBO Max. In addition to marking the series’ best viewership yet, Sunday’s episode helped pull the show up to an average of 10.7 million viewers per episode to date. In addition, the series has reached 18.3 million viewers across episodes in total. According to WBD, “It: Welcome to Derry” ranks among the three biggest series debuts ever on HBO Max, coming behind video game adaptation “The Last of Us” and “Game of Thrones” spinoff series “House of the Dragon.” The company also says that conversation about “It: Welcome to Derry” has grown nearly 60% each week since the premiere, with Episode 7 outperforming the series premiere by 300%.

Episode 6 of “I Love L.A.” reached 1 million viewers in three days. The series, which debuted on Nov. 2, is now averaging 1.8 million viewers per episode to date. WBD reports that “I Love L.A.” is among the fastest growing comedy series in the history of HBO Max.

Muschietti developed “It: Welcome to Derry” for television along with his sister Barbara Muschietti and Jason Fuchs. Executive producers include the Muschiettis through their Double Dream production company, Fuchs, Skarsgård, Brad Caleb Kane, David Coatsworth, Shelley Meals, Roy Lee and Dan Lin. Fuchs wrote the first episode and serves as co-showrunner with Kane, while Muschietti directs multiple episodes.

Rachel Sennott is the creator and star of “I Love L.A.” She executive produces alongside Emma Barrie, Aida Rodgers, Max Silvestri and Lorene Scafaria.