Shares in Abu Dhabi Islamic Bank ADIB.AD rise 4.0 pct to 4.21 dirhams, highest since April 2016; market's most heavily traded stock by large margin

** Foreigners allowed to own up to 25 pct of shares in the bank from today; previously, only UAE citizens could invest

** Stock had already jumped 10.7 pct since Nov. 11, when bank announced the reform

** Of three analysts covering stock, one recommends "buy" and two "hold", Refinitiv data shows; median target price 4.10 dirhams

** Abu Dhabi stock index .ADI is flat

(Reporting by Andrew Torchia) ((andrew.torchia@thomsonreuters.com; +9715 6681 7277; Reuters Messaging: andrew.torchia.thomsonreuters.com@reuters.net))