Correct the headline, lede and details in second bullet to say $18 billion is debt programme's limit, not amount of new issuance

March 23 (Reuters) - Shares of AIA Group 1299.HK fell by the most in nearly a year on Monday, as investors grew jittery amid the broader market sell-off and concerns potential rising cost of debt issuance.

Here are some details:

• AIA's Hong Kong shares slipped 7.8% on Monday to a three-month low, underperforming the benchmark Hang Seng Index's 3.5% drop, and marking their biggest single-day drop since last April.

• The insurer on Monday said in a filing that the upper limit of a global medium-term note and securities programme is maintained at $18 billion, via which it issues debt securities to professional investors. It had US$14.2bn of borrowings outstanding as of end-2025.

• Investors have turned risk-averse toward the Asia-focused insurer, worrying about its business prospects amid the region's economic uncertainties stemming from surging oil prices, said Jason Chan, investment strategist at Bank of East Asia.

• U.S. Treasury yields have climbed to recent highs, raising concerns that future debt issuances could come with higher funding costs, Chan said.

• Citigroup and HSBC are arranging the programme, with a group of international banks acting as dealers, according to the filing.

(Reporting by Jiaxing Li, Selena Li in Hong Kong and Roshan Thomas in Bengaluru; Editing by Sumana Nandy and Sherry Jacob-Phillips)

((Roshan.Thomas@thomsonreuters.com;))