During the 2000s, when interest rates in Japan were extremely low, Mrs. Watanabe became known for seeking higher yields abroad. They would borrow Japanese yen at a low interest rate and invest in currencies such as the Australian dollar or New Zealand dollar, which had higher interest rates at the time. This strategy aimed to profit from the interest rate differential between the two currencies.
Mrs. Watanabe's collective participation in the carry trade phenomenon had a notable impact on global currency markets. Their significant volume of trades could influence currency exchange rates and contribute to trends in various currency pairs.
However, it's important to note that currency carry trading involves significant risks, including exchange rate fluctuations and potential losses if the borrowed currency appreciates unexpectedly. The phenomenon also brought attention to the interconnectedness of global financial markets and the role of retail investors in influencing those markets.