The Motley Fool·2025-10-09 08:28Core Viewpoint - The current stock market may be experiencing a bubble, particularly driven by AI stocks, but there are still investment opportunities in certain companies that appear undervalued [2][3][18] Group 1: Micron Technology - Micron Technology's shares are reaching all-time highs in 2025, with significant revenue growth and profit margins, trading at less than 12 times forward earnings estimates [4][5] - The demand for memory products is cyclical, raising concerns about the sustainability of current growth, but the company's high-bandwidth memory (HBM) products are crucial for data center expansions [6][8] - OpenAI's ambitious plans for data centers indicate a long-term demand for memory products, suggesting that Micron could maintain steady growth beyond 2026 [7][8] Group 2: Duolingo - Duolingo is leveraging AI to enhance its product offerings, which is positively impacting its subscription revenue, with a 46% year-over-year increase in Q2 2025 [9][11] - Despite only 8% of its 128 million monthly active users being paying subscribers, subscriptions accounted for 84% of total revenue, indicating significant potential for growth [10] - The stock is currently down 40% from its all-time high, suggesting that if growth continues, the current valuation may be seen as a bargain in retrospect [12] Group 3: Super Micro Computer - Super Micro Computer is positioned as a high-growth business with expanding profit margins, trading at about 22 times forward earnings estimates, which is considered cheap given its expected 50% net sales growth for fiscal 2026 [13][14][15] - The company's profit margin has been declining, raising investor concerns, but management believes it is bottoming out and can improve in the long term [17] - The company's role in the data center ecosystem is expected to support sustained top-line growth, making it a potentially exciting investment if margins improve [16][17]