Dot-com bubble
The dot-com bubble was a stock market phenomenon characterized by excessive speculation in internet-based companies, driving rapid increases in their equity valuations from roughly 1995 to 2000 before a sharp collapse.[1] This period saw the NASDAQ Composite Index, heavily weighted toward technology stocks, surge approximately fivefold, reaching its peak closing value of 5,048.62 on March 10, 2000.[2] The bubble's formation stemmed from widespread optimism about the transformative potential of the internet, coupled with loose monetary policy and ample venture capital inflows that prioritized growth over profitability, leading investors to overlook traditional fundamentals like earnings and revenue.[3] Federal Reserve Chairman Alan Greenspan highlighted emerging risks in a December 1996 speech, warning of "irrational exuberance" in asset prices as early as four years before the peak.[4] The burst began in early 2000 amid rising interest rates, faltering business models, and revelations of overvalued firms lacking viable paths to sustainability, resulting in the NASDAQ plummeting nearly 78% by October 2002 and erasing over $5 trillion in market capitalization.[5] Iconic failures included high-profile dot-com startups like Pets.com, which exemplified hype-driven valuations unsupported by operations, while survivors such as Amazon weathered the downturn to underpin the mature internet economy.[1] Venture capital funding peaked dramatically around 2000, reflecting the era's speculative fervor before contracting sharply post-crash.[6] Despite the devastation—marked by widespread bankruptcies, layoffs, and investor losses—the episode accelerated technological adoption and sowed seeds for innovations that defined subsequent digital expansion, underscoring cycles of over-optimism detached from underlying economics.[7]