jwg - I have been working with oddlot ratios for years, and I have never been able to find much use for the "purchase/sales ratio" which you just posted.
However, there is another ratio which has been extremely helpful! That is the oddlot "short sales to sales ratio" which is very bullish if over 5% (as you can see, it is now 15% which as high as I have ever seen it! (Approx. 70,000 in sales, and 10,500 in short sales)
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