Renowned investor, Mr. Ueda, successfully completes a significant sell-off of Exchange Traded Funds (ETFs) that has been ongoing for over 100 years. This major economic decision marks a new era in Ueda’s investment strategy. The timing and reasons behind this century-long undertaking are not immediately clear.

In Japan, such financial moves by respected investors like Mr. Ueda can significantly impact the nation's economic situation. As ETFs are a popular investment vehicle among Japanese citizens, Ueda’s ETF sell-off might influence similar activities by others. The transaction's completion endorses the stability and efficiency of Japan's stock market, demonstrating its conducive environment for long-term investments.

In the US and EU, large-scale transactions like this are typically conducted by large financial institutions instead of individual investors. A comparable occurrence would be Warren Buffet's significant market decisions which directly impact stock prices and investor sentiments.