Why is ADTRAN stock plunging today?

Recent market activity shows a downward trend for several prominent companies. ADTRAN stock is currently plunging, while Reddit shares have experienced a slide of nearly 9%. Similarly, DraftKings and ServiceNow are both seeing their stock prices slide today. These simultaneous declines across different sectors indicate a period of volatility for these specific equities, as investors react to current market conditions affecting the valuation of these technology and gaming firms in the trading session.