Jim Cramer's top 10 things to watch in the stock market Wednesday
Moderna is soaring after promising results for its cancer vaccine. Plus, Target may be victim to profit-taking.

Jim Cramer has identified several critical developments for investors to monitor during Wednesday's market activity. As the leader of the CNBC Investing Club, Cramer operates under a specific set of transparency rules for his charitable trust to ensure that his audience has a fair opportunity to act on his recommendations. These internal regulations dictate that a 45-minute window must pass after a trade alert is sent before any transaction occurs within the portfolio. Additionally, if a security is discussed on television, the trust is required to wait 72 hours following the trade alert before execution. These measures are designed to provide subscribers with ample time to react to his financial moves before the trust itself enters the market.
AI Infrastructure Stock Below Recent High
One of the primary moves on the agenda for August 18, 2026, involves increasing a stake in a company focused on artificial intelligence infrastructure. This specific sector has experienced significant volatility in recent months, and Cramer is looking to capitalize on a price point that currently sits well below the stock's recent high. AI infrastructure remains a cornerstone of the current technological expansion, as data centers and hardware providers race to meet the massive demands of generative models and enterprise computing. By purchasing more shares at these discounted levels, the trust aims to position itself for long-term growth in a field that continues to attract substantial capital investment from major tech players.
Costco Sets Sights on Medicare Advantage
In the retail space, Costco is making headlines by expanding its reach into the healthcare industry. The warehouse giant is now targeting Medicare Advantage as a new product offering for its membership base. This move follows a broader trend of large-scale retailers integrating health services into their business models to drive recurring revenue and deepen customer loyalty. By entering the Medicare Advantage market, Costco is positioning itself to compete with traditional insurance providers and other retail pharmacies that have already established a presence in the senior care sector. This strategic pivot reflects the company's ongoing efforts to diversify its revenue streams beyond traditional bulk groceries and household goods, leveraging its massive subscriber base to negotiate better terms in the healthcare space.
Stock Hurt by Middle East Tensions
Geopolitical factors are also playing a significant role in the current market strategy. Cramer noted that the charitable trust is adding to its position in a stock that has recently faced downward pressure due to renewed tensions in the Middle East. While regional instability often leads to market fluctuations and increased risk aversion, the trust views the current dip as a strategic buying opportunity. Historical data from April 4, 2025, and subsequent periods suggests that while geopolitical strikes and retaliations can cause short-term pain for specific sectors, companies with strong fundamentals often recover as the cycle of conflict stabilizes. The decision to buy into the weakness demonstrates a belief that the underlying value of the company remains intact despite the external pressures of international conflict and the resulting market anxiety. Cramer continues to monitor these global developments as they impact domestic equity valuations.
Source: CNBC · 2026-08-19