Netflix Inc. lost as much as $8 billion in market capitalization in a few minutes of trading on Walt Disney Co.’s news of its upcoming -- and cheaper -- rival streaming service.

Disney unveiled details of the service on Thursday after the close, saying it would launch Nov. 12 at a price of $7 a month or $70 a year. That undercuts Netflix, whose most popular U.S. plan costs about $11 a month.

Netflix shares (NFLX) fell as much as 5 percent to $349.36 shortly after the open in New York Friday, sending its market as low as $152.5 billion.

Analysts have been sanguine about Netflix’s rising subscription prices, which haven’t seriously dented its 60 million-strong U.S. customer base. Still, the company has rarely faced a challenge like the deep-pocketed Disney, which is willing to lose money for years on Disney+ as it moves to grab market share.

Disney went the opposite way. Disney shares (DIS) jumped to a record high, adding as much as $25 billion in market value, for a total of about $235 billion.

The entertainment giant presented Disney+ on a sound stage used to make the original “Mary Poppins,” delivering an Apple-style presentation of the online product. The service will live or die based on its content -- and that’s where Disney made a big statement. Disney+ will feature an arsenal of kid-friendly programming, including 13 classic animated movies, 21 Pixar features, original series, and material from its Marvel and Star Wars franchises.