Shares of Oklo Inc. (OKLO) tumbled 5.06% in pre-market trading on Thursday, following the company's announcement of a potential securities offering of up to $3.5 billion. The sharp decline comes as investors react to the news, which was revealed in a recent SEC filing.

The significant size of the proposed offering has raised concerns among investors about potential share dilution and the company's need for substantial additional capital. Such large-scale offerings can often lead to downward pressure on a company's stock price as the market adjusts to the prospect of an increased number of outstanding shares.

While the details of the offering, including its timing and the specific types of securities to be offered, have not been fully disclosed, the market's immediate reaction highlights the sensitivity of investors to such announcements. As trading progresses, investors will likely be closely watching for further details about Oklo Inc.'s plans for the potential $3.5 billion raise and how it might impact the company's future growth strategy and financial position.