Amazon shares fall as market cap crosses $3tn, analysts link it to Jeff Bezos

On August 3, Amazon's shares briefly surpassed the $3 trillion market capitalization, closing at a record high after a 4.5% increase. However, overnight trading saw a 1% drop in shares following a regulatory filing that revealed founder Jeff Bezos' plans to sell 15 million shares, valued at $4.07 billion. The timing of the filing dampened investor excitement that had been building in the wake of Amazon's Q2 earnings, which had surpassed expectations.

The shares were acquired as founder stock in July 1994 and are set to be sold under a Rule 10b5-1 trading plan adopted in November 2025. If executed, Bezos' stake would decrease to 869 million shares, roughly 8.1% of the 10.79 billion outstanding shares. His remaining shares would still be valued at around $244 billion at the current market price.

Rule 10b5-1, a regulation from the US SEC, allows insiders at public companies to set up a schedule for selling shares in advance, helping them avoid accusations of insider trading. Major shareholders often use this rule to sell a fixed number of shares at a predetermined time, minimizing the risk of insider trading allegations.

Introduced to clarify Rule 10b-5, part of the Securities Exchange Act of 1934, this regulation aims to prevent securities fraud. Jeff Bezos has previously sold shares in significant amounts, including 25 million shares worth $5.7 billion between late June and late July, and has sold about $50 billion in Amazon stock since 2002, often directing proceeds towards Blue Origin and AI ventures through Bezos Expeditions.