Samsung Electronics reported preliminary Q2 operating profit of 89.4 trillion won and revenue of 171 trillion won, compared with 4.7 trillion won profit and lower prior-quarter revenue. Shares fell nearly 5 percent at the open after the results, which incorporated one-time deductions tied to a new labor agreement allocating 10.5 percent of operating profit to bonuses. The figures reflect gains from memory-chip pricing amid shortages.