** Shares of One Mobikwik Systems Ltd ONEM.NS jump nearly 23% over two days, their biggest such gain since mid-March

** Fintech and digital payments firm ONEM up 14% currently, rose 8% on Monday

** Abu Dhabi Investment Authority sold entire 2.5% stake in co via block deal on Monday; BofA Securities bought 0.64% stake

** Over 47.3 million shares change hands, 23x the 30-day avg volume

** On the day, 189,698 ONEM shares change hands in single block deal at 265.71 rupees/share, a premium to last close - NSE data

** ONEM down 54% YTD, while larger rival Paytm PAYT.NS up 23%

(Reporting by Nandan Mandayam in Bengaluru)

((Nandan.Mandayam@thomsonreuters.com; Mobile: +91 9591011727;))