Hot or Not, Stock Market Edition: 06/19/2026

Happy Friday. Here are the stock stories we're following today:

• Hot: Telecom giant America Movil (AMX) gains investor confidence; telecommunications player Telecom Argentina (TEO) is is riding multiple tailwinds
• Not: Oklo (OKLO) is an exciting company, but worrisome stock; communication equipment maker AST SpaceMobile (ASTS) is losing investor support

P.S. For more stocks making moves, check out our Zen Ratings Upgrades & Downgrades screener.

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🔥 HOT: Telecom giant America Movil (AMX) recently surged nearly 10% in a single trading session as investors responded to improving earnings trends and growing confidence in the company's Latin American operations. The gains have calmed down since then — could it be an opportunity to buy the dip? Here’s the bull case: telecom giant has benefited from steady subscriber growth, strong profitability, and strategic expansion efforts, including its acquisition of Brazilian broadband provider Desktop. With more than 330 million wireless subscribers and increasing strength across key markets like Brazil and Mexico, America Movil continues to execute while many telecom peers struggle to grow.

The improving outlook is reflected in the Zen Ratings. AMX was recently upgraded from a C (Hold) to a B (Buy). Looking at the Component Grades that shape the overall grade, the stock earns above-average Bs in several key categories, including Growth, Momentum, Safety, and Value. It also earns an elite A from our proprietary AI algorithm, which sifts through mountains of data to locate the highest-potential stocks. All said? Strong operating performance, growing investor confidence, and a favorable ratings profile make America Movil one of the more compelling names in the telecom sector right now.

🥶 NOT:  Nuclear startup Oklo (OKLO) has become a reminder that exciting technology doesn't always make for a great stock. Shares recently plunged in early June — the stock has recovered, but the cracks in the facade have not. Despite all the excitement around next-generation nuclear power, the company still generates little to no meaningful revenue today. While Oklo's nuclear fuel agreement was intended to strengthen its long-term growth story, the market instead focused on the substantial execution risk that remains between today's promises and tomorrow's profits.

The Zen Ratings model reflects those concerns. OKLO currently carries an F rating, which amounts to a Sell recommendation, placing it among the lowest-rated stocks in the entire market. The stock earns F grades for both Safety and Value, highlighting the combination of extreme volatility and a valuation that appears difficult to justify based on current fundamentals. Bottom line: Too many warning signs. Avoid unless you’re into speculation.

🔥 HOT:  Telecommunications player Telecom Argentina (TEO) has become one of the market's most dramatic turnaround stories, with shares soaring over 20% in the past month. One big catalyst? The recent rally in Argentine equities amid growing optimism about the country's economic reforms. Investors are increasingly betting that a stabilizing economy, and improving business conditions could unlock significant value — especially for infrastructure players like TEO. 

The improving outlook is reflected in the Zen Ratings. TEO was recently upgraded from a C (Hold) to a B (Buy) rating, earning B grades for Growth, Momentum, and Value, indicating a combination of improving business performance, strong investor demand, and attractive valuation characteristics. Bottom line: The combination of the turnaround story and  improving fundamentals and powerful momentum suggests Telecom Argentina remains a name worth watching.

🥶 NOT: Communication equipment maker AST SpaceMobile (ASTS) shares have been steadily downtrending as investors shift their focus back to the company's biggest challenge — turning an ambitious vision into a profitable business. With significant capital requirements still ahead and meaningful commercial revenue yet to materialize at scale, the market appears increasingly unwilling to give the company the benefit of the doubt.

The Zen Ratings model remains highly skeptical, giving ASTS an F rating, which amounts to a Strong Sell recommendation. The Component Grades are dismal, too. The company earns F grades for Sentiment, Safety, Financials, and AI — a BIG warning sign. Sure, AST SpaceMobile has exciting technology and a potentially massive long-term opportunity, but investors are still being asked to pay for future possibilities rather than proven business results.

What to Do Next?

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