Which celebrity's 2018 Instagram endorsement caused the highest documented percentage drop in a competitor's market value within 24 hours?

Celebrity endorsements have been a cornerstone of product marketing for decades, with brands paying millions to associate their products with famous faces. These partnerships can dramatically influence consumer behavior and brand perception. This poll tests your knowledge about the financial impact of celebrity endorsements in the retail industry.

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Kylie Jenner's tweet about no longer using Snapchat, causing a $1.3 billion loss in Snap Inc.'s market value
Cristiano Ronaldo moving Coca-Cola bottles at Euro 2020 press conference, causing a $4 billion market value decline
Taylor Swift's partnership with Apple Music after criticizing Spotify, causing Spotify's shares to drop 8%
Elon Musk's negative comments about Facebook on Twitter, resulting in a $12 billion Facebook market value decrease