Samsung Shares Fall 10% on Blowout Earnings Guidance, Signaling AI-Stock Repricing

Samsung Electronics guided to a 19-fold year-on-year jump in second-quarter operating profit, beating expectations. Shares fell as much as 10% on July 7, 2026, opening at 309,000 won and falling below 290,000 won intraday. The disconnect reflects sell-the-news dynamics after the stock's sustained rally as a memory-demand proxy. Whether this is profit-taking, durability concerns over the AI capex cycle, or semiconductor repricing remains unresolved without full segment details.