THE TRADITIONAL NYAD LINE HITS NEW RECORD… Chartists look to the NYSE Advance-Decline line to help determine the trend of the stock market. The NYAD line is simply a running cumulative total of the number of advancing stocks minus decliners on the big board. And it has a good track record of leading turns in the stock market itself. Chart 1 shows the traditional version of the NYAD line peaking last May which warned of a market downturn that started last summer and lasted into this year. Chart 1 also shows the advance-decline hitting a record high this spring.