3 Stocks Flying Under the S&P 500 Radar

The article advocates for diversifying investment portfolios beyond mega-cap technology stocks, suggesting opportunities in specialized growth areas. It highlights Aeva Technologies (AEVA), up 401% in 2025, for its advanced 4D LiDAR in autonomous vehicles, and Ouster (OUST), up 126% in 2025, for its digital LiDAR applications in defense and industrial automation, including recent DOD approval. Additionally, Taiwan Semiconductor Manufacturing (TSM), up 22% in 2025, is noted for its critical role in chip manufacturing and strong Q2 results, with revenue up 50% and EPS up 66% year-over-year, despite geopolitical concerns.

Analysis

The current market environment suggests a strategic diversification away from market-cap-weighted indices like the SPDR S&P 500 ETF Trust (SPY), which are heavily concentrated in mega-cap technology stocks. While this has been a successful strategy, a broadening market rally introduces concentration risk. Opportunities are emerging in specialized growth areas, particularly within autonomous technology and semiconductor manufacturing. In the LiDAR space, Aeva Technologies (AEVA) presents a high-growth, high-risk profile, with its stock up 401% in 2025 on the promise of its unique 4D FMCW technology and future contracts, despite having no current revenue from these deals, a recent 20% stock decline, and short interest exceeding 17%. Conversely, Ouster (OUST) is pursuing a more defensive strategy by targeting the defense, robotics, and industrial automation markets, recently securing a key approval from the U.S. Department of Defense. Ouster's stock has surged 126% in 2025, trading significantly above its consensus price target, indicating potential over-extension ahead of its August earnings report. For a more fundamentally grounded approach to the AI theme, Taiwan Semiconductor Manufacturing (TSM) offers a compelling case. As a dominant chip foundry with key contracts with Apple, AMD, and Nvidia, TSM recently reported exceptional results, including a 50% year-over-year revenue increase and a 66% rise in EPS, signaling strong continued growth despite geopolitical concerns.

Key Decisions for Investors

• Investors should review portfolios for over-concentration in mega-cap technology and consider diversifying into specialized, high-growth sectors to mitigate risk and capture a broadening market rally.
• For high-risk tolerance portfolios, Aeva (AEVA) and Ouster (OUST) offer speculative exposure to the autonomous vehicle and industrial automation themes, but require careful monitoring of AEVA's high short interest and OUST's stretched valuation.
• Monitor Ouster's upcoming earnings report in August, as it will be a critical catalyst to either justify the stock's 258% run-up over the last three months or provide a more favorable entry point.
• Consider Taiwan Semiconductor (TSM) as a core holding for AI infrastructure exposure, supported by its strong fundamentals, including 50% revenue growth and dominant market position, while remaining mindful of underlying geopolitical risks.