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You need to understand the basics of option price models. It depends on the the underlying price, underlying historical/implied volatility, strike price, time left to expiration, and etc. (interest rate, dividend). To measure how the price of options move with underlying price and time, you...

Just wondering, what is the exact difference between paper trading and back testing? :p

A thought, not a problem. I accept that is one of many of my usual spelling errors. shrugging my shoulders to you, well, after all English is not my first language. But I appreciate you point it out so that I will try to make less the same error again. Thank you. :p

I want to be able to modify errors in the questions and options of polls that I posted. But I cannot do this now. Thanks. :p

How many continuous wining days on paper you need to start trading real money? How long it takes for you to be able to start trading real money? Note: it's 3-10 and more than 10 not 7. Cannot edit the polls now. Also month should be months. The options make me dizzy. :p

yes yes, they will. and they make rules. we are doomed. :( :p

fortunately, there is no SSF on RMBS. If there were, I wonder what would happen to the players. :p

It was fun. Good luck. What do you think? :p

For example, Tradestation globalserver talks to a DBC Signal/eSignal winros through TCP:2189. But how? Is the protocol proprietary? Please give some insight. Thanks :p

please change the subject of the thread to "state of the union". thanks. :p

let me tell you why from a MY perspective. because if YOU don't do some you have done and are doing, the world may be much miserable. there are sacrifice, meaning you and others around the world including some of US. so your democratic process is really important for make sound, decisive, and...

no no no, the interval between the applause instead. :p

Did Bush jump a line? One sentence was read regarding middle east. Then he talked about Africa and AIDS. :p

so far so good. lots of talk about economy and tax reform. :p --- It may be different this year.

Thank you very much, Don. I just remember. Was it in the State of Union Speech of last year that Bush talked about Indian and Pakistan. This year, he is gonna talk about Iraq and North Korea. So IMO, it seems economy may not turn around drastically from Bush point of view. :p

Make a wish, it shall come true. :p --- before the state of union;

Rosebud. :p -- nobody knows what it is.

Is the state of union an anual event? (Or once four year in the middle of the presidency? Howdya say once two years and once four years?) How will it affect the next trading day? Is there any historical probability trend? :p

Forget about TradeStation. It's a PDT-killer whore. Also it has higher minimum account balance and initial deposit requirement, 10K and 30K for non PDT and PDT respectively. Way to go with prop now. :p But TS has just a little less stricter definition on PDT, 4 day trades in 5 business...

Thank you very much for the reference. But I still see no programming details on winros. What protocol it uses to supply data? It seems the data are not transferred through DDE/socket to the client? for example, how does globalserver read data from a DBC winros? :p