The S&P 500 enjoyed its best week since the first week in January, adding 1.6 percent to close at 2500 for the first time. Most of the gains came early in the week after a weekend in which North Korea refrained from another missile launch, and the destruction from Hurricane Irma, as bad as it was, was not as devastating as feared. As it turned out, North Korea was simply waiting for a different launch date, this time on Friday. But stocks held onto their gains anyway, rising fractionally on Friday to close at a new record high. Although markets took this latest provocation in stride, the North Korean threat has certainly not gone away, and will be the topic of discussion this week at the UN.