Investors expect Japan's stock market rally to slow, leading to a shift in investments to rival markets. The Topix index is forecast to climb 2.9% to 2,890, and the Nikkei 225 Stock Average to rise 4.8% to 41,489 by year-end, a slowdown from the 18% advance in the first half. Concerns over the weak yen, inflation, and potential interest rate hikes weigh on sentiments.