** Networking and custom AI chipmaker Broadcom's AVGO.O shares rise 9.3% to $168.50 after closing up 5.3% on Monday

** Co on Monday announced $10 billion share repurchase program

** CEO Hock Tan says move underscores confidence in AVGO's artificial intelligence investments

** Brokerage Keybanc also says AVGO will have partial share of customer Apple's iPhone 17 WiFi chips even as Apple AAPL.O increasingly moves to internal modems

** Wider chip sector rises as it recovers from losses after historic market selloff last week on U.S. President Donald Trump's tariff announcements

** AI chipmakers Nvidia NVDA.O, AMD AMD.O up more than 6% each, Intel up ~3.7%; benchmark Philadelphia Semiconductor Index .SOX up ~5% on Tuesday after ~16% drop last week

** Analysts' average recommendation on AVGO is "buy" with median price target at $250 - data compiled by LSEG

** AVGO down ~27.5% YTD after ~107.7% gain last year on AI enthusiasm

(Reporting by Arsheeya Bajwa in Bengaluru )