In the week of August 11, while investment vehicles moved in different directions, the biggest gainer of the week was the euro, with an increase of 1.07%. The investment vehicle that lost the most value was gold, with a decrease of 1.85%. In the market, which has left behind a volatile week for investors, the foreign exchange front exhibited a positive trend, while declines were prominent in precious metals. On the Borsa Istanbul side, a negative trend prevailed.