MOSCOW- Foreign investors' share among holders of Russia's OFZ treasury bonds shrank in August as the volume of issued bonds increased, central bank data showed on Thursday.

Sliding for the third month in a row, non-residents' share among OFZ bond holders fell to 29.4% as of Sept. 1, down from 29.8% in a month earlier and this year's peak of 34.9% as of March 1.

(Reporting by Andrey Ostroukh and Elena Fabrichnaya; Editing by Toby Chopra) ((andrey.ostroukh@thomsonreuters.com; +7 495 775 1242;))