Opening Momentum

Years ago, when I was a prof at the U of Waterloo, the students would hand out questionnaires to students in math classes designed to gauge their opinion(s) of their profs. There were lots of questions on lots of topics associated with the prof's teaching. Later in the term, an anti-calendar was published with all the data -- and handed out to faculty and students. There was so much info, it was difficult to identify profs that should be complimented (or otherwise). As Associate Dean of the Math Faculty, I decided to distill all the data for each prof into a (gasp!) single number. "What! That's ridiculous! A single number to represent all the data on each prof?" There's some merit in that criticism. It's like identifying a good (bad?) stock by its P/E ratio alone. However, my prof rating did serve to single out teachers that deserved a closer look. Once upon a time I tried to do that for stocks, with a single number (perhaps more sophisticated than the P/E ratio): gRANK. More recently I've been interested in what I call Opening Momentum. If a stock opens UP significantly, I think that might illustrate some enthusiasm for the stock ... and it'll go significantly higher during the day. I now have a single number which may (or may not!) identify stocks that deserve a closer look. It's described here. Check the S&P ------------------------------------ After writing up that stuff, I googled opening momentum ... just to see if'n others used the same words. I got this at the top o' the list: (Click to enlarge.) Mamma mia! Google is fast! P.S. I notice there's a book that deals with "opening momentum". It's reduced in price, from $299 to $199. A good buy, eh?