In a witty turn of the phrase, Bloomberg writes today that "the US stock market is finally as fast as it was about a hundred years ago" and it's true: it's been about one century since share trades in New York settled in a single day, as they will from Tuesday under new SEC rules. The change, which cuts in half the time it takes to complete every transaction, us also occurring in Canadian and Mexican markets starting Monday; For some investors, one-day settlement cycles may mean greater convenience. For others, T+1 may require closer attention to how shorter settlement times could affect one's investment, trading, ... (full story)