The 10-year German government bond could be about to join the negative-yield club. The 10-year bund yield touched a fresh record low again Friday, extending this week’s record-shattering decline. In recent trading, it was 0.011%, down sharply from 0.6% at the end of last year. Yields fall as bond prices rise. As part of its stimulus program, the European Central Bank continues to mop up bunds in the market, intensifying the race among private-sector investors to obtain the benchmark debt instrument for the eurozone. That’s putting downward pressure on yields.