Apple shares head for biggest week since 2020 following investment pledge

** Shares of Apple Inc AAPL.O jumping ~4% on Fri, with the shares on track for strongest weekly pct gain in five years after the iPhone maker on Wed pledged $100 bln in additional US investment

** AAPL up ~13% for the week after U.S. President Donald Trump on Wed announced the investment, which centers on expanding the co's supply chain footprint in the U.S. but still falls short of Trump's demand that AAPL make iPhones domestically

** Appearing at the White House, AAPL CEO Tim Cook also gave Trump a U.S.-made souvenir with a 24-karat gold base

** For the week, AAPL's market cap has gained ~$390 bln, lifting its market cap to $3.39 trln