ACN Collapses 18% to Decade Lows: Inside Accenture’s $4.18B Cybersecurity Bet Amid Slashing Growth Guidance
Accenture plc (NYSE: ACN) experienced its worst single-session market selloff in recent history on June 18, 2026, cratering 17.97% to close at $127.98. The sharp devaluation wiped out billions in market cap, pushing the stock to price levels not seen since 2016.