** Aye Finance AYEF.NS drops 4.5% to 123.50 rupees
** Non-banking lender's stock debuted at 129 rupees - same as IPO issue price, valuing stock at 31.84 bln rupees ($351 mln)
** Proceeds will be used to bolster capital base, fund future business expansion
** IPO subscribed 0.64 times, with bids picking up only on final day, per exchange data
** "Aye Finance made a flat market debut, listing exactly in line with its IPO price, indicating neutral investor sentiment and lack of strong listing gains," says Shivani Nyati, Head of Wealth at Swastika Investmart
($1 = 90.6900 Indian rupees)
(Reporting by Surbhi Misra in Bengaluru)
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