In a single day, American Eagle Outfitters $AEOstock became one of the most talked-about titles on Wall Street. The company launched a new ad featuring Sydney Sweeney, whose tagline "Sydney Sweeney has great jeans" sparked a wave of controversy and debate about hidden innuendo in the media. Donald Trump unexpectedly weighed in on the story, publicly praising the spot on his social network, sparking a viral frenzy. AEO shares responded with a 23% rise, the biggest since 2000. Could this unplanned media explosion turn into real revenue growth and a long-term opportunity for investors, or is it just a short-term political-marketing meme?

Top points of analysis

• 23% intraday growth in the stock: Following Trump's announcement and the viral spread of the ad on social media, the title posted its biggest intraday gain in 25 years.
• Increased online traffic: Traffic to American Eagle's website grew more than 35% in the week after the ad was posted, according to SimilarWeb, and sales of the core…