U.S. stock markets experienced a notable selloff, with the Nasdaq-100 (QQQ) and the S&P 500 (SPY) declining sharply amid rising economic concerns. Reports emerged of a new coronavirus discovered in China, which has the potential to cause another pandemic. This news contributed to a sour market sentiment, particularly affecting technology and small-cap stocks. The volatility index (VIX) spiked as investors reacted to the uncertainty. Market analysts noted that the recent options expiration added to the market's instability. The Nasdaq-100's recent performance has been characterized by key volume pivots, with traders observing a downward trend and cautioning against expectations of immediate counter-moves until momentum shifts. The latest updates indicate that the QQQ closed at 534.36, with significant trading activity in 535 calls and 534 puts, reflecting the market's volatility.