Yields are an acid-test indicator of investment values and trends. When those yields start to rise, it will indicate a trend change. Barron's is the primary source of yield data on major U.S. stock indexes. The Wall Street Journal also publishes yields for the Dow Jones averages every Monday and at month-ends. Trading volume on the New York Stock Exchange will drop to the previous year's level and below.
Trading volume goes with the trend, increasing in bull markets and falling in bear markets.
The steady rise in trading volume has been a phenomenon of the current bull market. Unfortunately, you will have to keep your own records of these statistics, because there is no ready-made source for such moving averages. The Dow Jones industrial and transportation averages will zigzag lower. Earlier this year, the transports reconfirmed the bull trend by zigzagging higher, just as the industrials had done. May. On current numbers, a drop by the industrials to a daily close below 10,000 while transports hold below 2,800 will be another downward signal.