Still confused what the BOJ’s shocking move was about, aside from pushing the US stock market to a new record high of course? This should explains it all: as the chart below show, as a result of the BOJ’s stated intention to buy 8 trillion to 12 trillion yen ($108 billion) of Japanese government bonds per month it means the BOJ will now soak up all of the 10 trillion yen in new bonds that the Ministry of Finance sells in the market each month.
In other words. The Bank of Japan’s expansion of record stimulus today may see it buy every new bond the government issues.