$7 Trillion In Bonds Now Have Negative Yields

Just ten days ago, in the aftermath of the BOJ's -0.1% NIRP announcement, we reported that after more than one year after the ECB unleashed NIRP, the total number of government bonds with negative yields to a staggering $3 trillion, a number which nearly doubled overnight to $5.5 trillion.
Overnight in a historic event, the latest consequence of the BOJ losing control, the yield on Japan's 10Y JGB dropped below zero for the first time, in the process joining Switzerland as the only other country (for now) with a NIRPing benchmark 10Y treasury.