November has been an exceptional month for Japanese stocks, mirroring rallies in global peers after the U.S. election, a series of Covid-19 vaccine developments and the signing of an Asia Pacific trade pact. The benchmark Topix has gained nearly 13% so far, on track for its best month since April 2013, while the blue chip Nikkei 225 Stock Average is up more than 15%, its largest monthly gain since January 1994.