Apple achieves its highest single-week increase in five years, and Tim Cook's visit to the White House reduces concerns about tariffs.

Apple's stock price rose 4% on Friday, closing at $229.35 per share, marking the largest weekly increase since July 2020. The stock price movement this week increased Apple's market value by over $400 billion, bringing its current market value to $3.4 trillion. Local time on Wednesday, Cook and Trump jointly announced at the White House that Apple plans to invest $100 billion in US businesses and US-made components over the next four years. Investors had been concerned that Trump's tariff policy could seriously damage Apple's profitability. Apple had warned in July that, if policies remained unchanged, the company was expected to incur over $1 billion in tariff costs this quarter. Samik Chatterjee, an analyst at JPMorgan, wrote on Wednesday, "For months, Apple has been facing potential challenges from tariffs, and Apple and Tim Cook have demonstrated great skill in dealing with this uncertainty." He gave Apple's stock a "hold" rating.