The Wall Street Journal’s live market coverage article provides direct and authoritative confirmation that Amazon’s stock experienced nine consecutive daily declines, marking its longest losing streak since 2006, and that roughly $474 billion in market capitalization was lost during that period. This report comes from a primary, high-credibility source that specifically details both components of the statement—the streak’s duration and the size of the valuation drop. Complementary coverage from Investor’s Business Daily, which regularly tracks 'Magnificent Seven' stocks including Amazon, provides contextual support and no contradictory evidence. Other sources referenced are either tangentially relevant or offer general market context but do not challenge the claim. Given the direct evidence and consistency among top-tier financial publications, the statement is strongly supported as accurate with a high level of confidence.