During September there was a sharp rise in the market capitalization of several tech companies, driven by the ongoing enthusiasm for artificial intelligence and a Federal Reserve rate drop that usually boosts future profits and cash flows for high-growth companies.

Tesla's market valuation increased by 22.2 percent last month to $834.4 billion by the end of September. This was largely possible due its launch of its Full Self-Driving (FSD) advanced driver assistance software in China and Europe as well as its record-breaking August sales of electric vehicles in China.

The stock of Oracle Corp., broke record last month, spurred by excitement over the company's prediction to surpass $100 billion in revenue by fiscal 2029, driven by AI-led demand for cloud services. This resulted in a 21.3 percent increase in the company's market value to $472.2 billion.

Meta Platforms Inc., had a 10 percent market value growth indicating a $1.45 trillion and all-highs in share price after debuting its Orion, its first functioning augmented reality glasses prototype, and the addition of additional AI features to its services.

By the end of the last month, the market value of Microsoft Corp., rose by 3.2 percent to $3.2 trillion, while the market value of Amazon.com Inc. spiked by 4.4 percent to $1.95 trillion.

At the same time, the market value of Saudi Arabian Oil Co., decreased three percent to $1.75 trillion, while the market value of Eli Lilly and Co. fell 7.7 percent to $842 billion.

On the other hand, Global investors, including Thrive Capital and Tiger Global, have committed $6.6 billion to OpenAI. However, the makers of ChatGPT have requested that investors refrain from backing five businesses that they consider to be direct competitors, according to sources who spoke to Reuters. Rivals creating massive language models, like Anthropic and Elon Musk's xAI, are on the list of businesses. Ilya Sutskever, the co-founder of OpenAI, has a new venture on the list called Safe Superintelligence (SSI). These businesses are competing with OpenAI to develop massive language models, which will cost billions of dollars.

Although the request is not legally enforceable, it does show how OpenAI is using its appeal to get financial backers to promise exclusivity in a market where finance access is critical.

Although this kind of expectation is not unheard of in the venture capital industry, OpenAI's list is remarkable. To prevent reputational risks, the majority of venture capitalists often avoid making investments in direct competitors of the companies in their portfolio.