Taiwan Mobile's stock hit an all-time high after foreign buyers snapped up shares for 22 straight days — good news for holders, and a sign the company's push beyond phone service is working.

• The stock closed up 2% at a record, with trading volume jumping alongside the price.
• Foreign investors have bought for 22 sessions in a row, and one brokerage just raised its target price.
• Profits are up 22% so far this year, the best of Taiwan's three big telecom firms.
• Taiwan Mobile is buying a controlling stake in IT services firm Systex, whose shares are up 33% since the deal was announced.
• The company raised its full-year profit outlook and says second-quarter earnings were the strongest in 20 years.

Outlook: If the Systex deal closes by early next year as planned, Taiwan Mobile expects to pass Chunghwa Telecom in revenue, having already passed it in profit.