Challenger bank OneSavings (LON:OSB) saw its share price jump nearly 4 percent on Wednesday, after it increased its full expectations for loan book growth to 20 percent.

The bank hit a 17 percent increase in its loan book during the first nine months of the year, with net loans and advances rising by £997 million pounds to £6.9 billion. After the better-than-expected performance in the first half of the year, OneSavings raised its growth estimate from a figure in the high teens to 20 percent.

In 2016 the group grew its loan book by 16 percent to 5.9 billion pounds.

OneSavings bank, a ‘challenger’ bank hoping to offer a more modern alternative to the traditional banks with increased online services and transparency, recently increased its focus on professional landlords. Going forward the bank are aiming to lend more to professional institutions rather than amateur buy-to-let investors.

Shares in OneSavings are currently trading up 3.50 percent at 411.40 (1403GMT).