Veteran Wall Street commentator Jim Cramer expressed significant apprehension on Friday regarding the escalating signs of speculative exuberance within the initial public offering (IPO) landscape. The host of CNBC's "Mad Money" cautioned that the highly anticipated market debut of Elon Musk's SpaceX could potentially ignite a detrimental wave of speculative buying, leading to bubble-like conditions in the broader market.
Cramer specifically referenced the recent explosive performance of AI chipmaker Cerebras Systems, whose blockbuster IPO on Thursday spurred concerns. He warned against a repeat of such fervent trading, stating his reluctance to "end up with another Cerebras." The impending SpaceX offering, expected as early as June with its prospectus possibly dropping next week, is projected to draw even more intense investor interest.
Reports suggest SpaceX, a diversified enterprise encompassing the Starlink satellite internet, social-media platform X, and the Grok chatbot, could command a valuation between $1.75 trillion and $2 trillion. While acknowledging the widespread enthusiasm surrounding Musk's ventures, Cramer articulated a serious concern: if underwriters release only a minimal number of shares to the public, demand could outstrip supply so dramatically that the company's valuation could skyrocket to an unsustainable $5 trillion. Such a scenario, he posited, would create "a bubble unto its own."
The financial expert further warned that a precedent-setting SpaceX IPO could embolden other high-profile artificial intelligence companies, such as OpenAI and Anthropic, to pursue their own public offerings. A cascade of massive technology IPOs could then begin to exert downward pressure on the overall market, as investors might sell off existing assets to amass capital for these new, attractive issues. "The stock market, like any other market, is all about supply and demand. Too much supply and the market breaks down," Cramer emphasized, reiterating his investment mantra.
Ultimately, Cramer stressed that the outcome hinges on the underwriters' strategy. He implored them to structure the deal responsibly, aiming to prevent the kind of "explosive first-day pop" that characterized and ultimately undermined the dot-com era's speculative excesses. "Hope the underwriters act responsibly rather than engineering the pops of a lifetime," he concluded, recalling the disastrous end to similar practices during the dot-com bubble.
Watch Jim Cramer discuss his views:

VIDEO: Everything about the Cerebras spike yesterday was wrong, says Jim Cramer (2:06)

VIDEO: A SpaceX IPO could overwhelm the market with excess supply, says Jim Cramer (4:38)
For more insights, sign up for the CNBC Investing Club to follow Jim Cramer's every move in the market.