** India's HDB Financial Services HDBF.NS climbs 3.3% to 868.50 rupees
** Stock jumped 13% in trading debut on Wednesday, valuing lender at $8.2 bln
** Mahesh Ojha, an analyst at Hensex Securities, expects a "long runway for expansion" for HDB, citing lender's asset quality
** HDB is a unit of India's biggest private lender HDFC Bank HDBK.NS; co's $1.5 bln IPO, India's largest so far in 2025, got bids worth $19 bln last week
(Reporting by Kashish Tandon in Bengaluru)
((Kashish.tandon@thomsonreuters.com))