TOKYO, June 19 (Reuters) - Japan's Nikkei stock average clung to gains of 0.9 percent on Friday but posted its biggest weekly fall in three months, with jittery investors needing more proof the economic recession is easing in order to push shares higher. Banks rose on brokerage upgrades and target price hikes, but bBattery maker GS Yuasa and shares in other companies seen as eco-friendly tumbled on profit-taking.
The benchmark Nikkei gained 82.54 points to 9,786.26 but fell 3.5 percent for the week, its biggest weekly fall in percentage terms since early March. The broader Topix rose 0.9 percent to 918.97. (Reporting by Elaine Lies)