I just started posting at

I'm not sure how often I'll be updating, but if I have a short thought to share during the trading day, that's the appropriate place to share it.

It's free to join and you can follow my comments.  If any readers are experienced with Twitter and have some advice please post your ideas.

My Twitter name is MarkWolfinger (no spaces).


4 Responses to Twitter

  1. Amu 01/05/2009 at 12:24 PM #

    Dear Mark
    When I go to contract selection for RUT options. There are various Trading Class listed. RUR, RUT,RUW, RUY RUZ
    I went to CBOE site but could not find any info on these trading classes. What are they ?
    Please kindly explain Much appreciated.

  2. Mark Wolfinger 01/05/2009 at 12:29 PM #

    Hello Amu,
    It’s nothing to be concerned about.
    There are so many strike prices, that the symbol for all cannot begin with the same three letters.
    Example, the February 410 strike, the 510, 610, 710 etc cannot all be RUTBB [The first ‘B’ represents the month and option type. ‘B’ is Feb calls; the 2nd B represents the strike, and ‘B’ is for strikes that end in ’10’].
    Thus, when an option has strikes that span more than 100 points, the symbols must change to accommodate that duplication.

  3. piazzi 01/05/2009 at 6:27 PM #

    How would I find you on Twitter?

  4. Mark Wolfinger 01/05/2009 at 8:13 PM #

    Clink the ‘Find People’ link.
    My Twitter name is MarkWolfinger (no spaces).