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Zecco.com » General Investing » Screening & Picking » Web-based historical backtesting
Last post 03-17-2008, 9:18 AM by ssanders82. 6 replies.
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  •  03-15-2008, 8:27 PM 25184

    Web-based historical backtesting

    Reply Quote
    Hi, I've just created http://www.Inspectd.com, which shows you a random 6-month historical stock chart, then asks you to make a buy/sell decision. It then immediately shows you what the stock did in the next 30 days and tracks your "profit" (you start with a $100,000 paper account). I think it's extremely valuable to teach yourself how stocks act (since it's real data), and it's cool because I haven't seen anything like it before.

    I'm an experienced programmer and intermediate trader, and I'd like to expand the site to include historical back-testing of custom-programmable strategies, as well as day-by-day tutoring (it would show you a historical chart and move forward one day at a time asking you if you want to close the trade). I think this would be an awesome teacher.

    I'd love your comments on my site, as well as any features that you'd like me to add. Thanks!

  •  03-15-2008, 8:59 PM 25185 in reply to 25184

    Re: Web-based historical backtesting

    Reply Quote

    Im not a technical trader but this a great idea. It's also a lot of fun. Only if I could invest this well realistically. Here is my score after about a 10 min play with the stuff.

    Fake Money. Real Stocks.

    Inspectd.com allows you to test your stock market skills against the toughest competitor there is - the stock market itself. Here's how it works: we show you a random chart from the past, and you try to guess whether the stock rose or dropped. We'll even give you $100,000 in play money to test your skill. But beware: it's addicting!
    Account Value: $2,315,017.62

     

    Not bad in my opinion. Only started with $100,000 bucks. :)

    Angell

  •  03-15-2008, 11:09 PM 25187 in reply to 25185

    Re: Web-based historical backtesting

    Reply Quote
    Wow, that's impressive. $2.3 million? You know these results are from actual stock performances in the past 20 years! Anyway, thanks for checking out the site. Is there anything you've seen that can make it better?

  •  03-16-2008, 12:55 AM 25191 in reply to 25187

    Re: Web-based historical backtesting

    Reply Quote
    I actually lost all my money. Except that it does not let your money go below $1000. While I was guessing the immediate direction of many stocks correctly, the results after a month were a lot different. I realized that without the fundamentals guessing the direction for a month is much harder than I thought it would be. Anyway, I think it would be interesting if you could let us see the price for the next several days (one day at a time) and give an option of sticking to our decision or changing it. The thing is that the technicals change several times in a month, and if I should trade pure technical then I'd rather see the price every day. I had some fun, thank you. 

  •  03-16-2008, 1:28 AM 25192 in reply to 25184

    Re: Web-based historical backtesting

    Reply Quote
    This is awesome!

    How about adding a MACD chart and showing the 'future' part of the price line using a different color when reporting the results? Just a suggestion. Great service to everyone. Thanks!

  •  03-16-2008, 1:53 AM 25193 in reply to 25184

    Re: Web-based historical backtesting

    Reply Quote
    One more suggestion if that's ok. It would be nice to know what happened to the 'skipped' stocks - wether it would have been a profitable trade or not. Thanks!

  •  03-17-2008, 9:18 AM 25237 in reply to 25193

    Re: Web-based historical backtesting

    Reply Quote
    Hi, I'm the OP and creator of http://www.Inspectd.com. Response has been *hugely* positive so far, and I've been getting a lot of good feedback and feature suggestions. I've made a few changes since version 1, including changing position size and trade length (1 day to 2 months), and allowing you to create a user account so your account value will persist. Adding more indicators, candlesticks, and a market comparision chart is next on the list.

    dtv999: Done!

    I'm also working on adding a day-by-day simulation, where you open a trade, then move forward one day at a time until you want to close the position. I think this is what more advanced traders are looking for, as it accurately reflects actual decision-making.

    Thanks so much for everyone's comments. Tell your friends!
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