NTT Corporation has announced plans to repurchase up to ¥200 billion of its own shares, a move expected to support the Japanese stock market. This buyback initiative reflects a broader trend in Japan where companies are reducing the number of shares outstanding. However, some analysts caution that the traditional impact of share buybacks on stock price increases may be short-lived. Meanwhile, investors are looking to fill the void left by Warren Buffett's investment approach, with figures like Bill Ackman aiming to establish themselves as influential value investors in the current market environment.