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  • Fooled by Machine Learning Applied to Trading Algo Development March 19, 2015

    The chances of finding a profitable trading strategy via the use of machine learning are extremely low.

  • Chartists and Trend-followers Need to Trade More Frequently March 16, 2015

    Besides the fact that chart patterns are mostly random formations (see head and shoulders, double bottoms, triangles, flags, etc.), chartists also face some practical problems having to do with position size.  Trend-followers also have similar problems. This is because position ...

  • Quantitative Discretionary Trading March 11, 2015

    Quants have started to realize that mechanical trading systems have certain severe drawbacks and are considering discretionary trading, which allows intelligent decision making based on both experience and quantitative analysis. In this blog I describe how I approach discretionary trading ...

  • Curve-fitting and Optimization March 6, 2015

    The subject of optimization and curve-fitting has received a lot of attention by trading system developers, especially during the last 10 years. There is a lot of confusion about this subject and different views, some even conflicting. There are those who claim that optimization ...

  • Every Trader Should Know This Formula [Premium Articles] February 23, 2015

    There is a formula that every trader should know and understand. It relates the win fraction to the profit factor and payoff ratio. An understanding of this formula can provide useful guidance about the risks  in different trading timeframes. This useful ...

  • Fully Automated Trading Systems: A Dubious Idea February 9, 2015

    The idea that a retail trader, investor or even fund can employ automated trading systems and profit consistently without continuing adjustments or interventions based on fundamental conditions is dubious.

  • Is this the Beginning of the End of Retail Forex Trading as We Know it? January 20, 2015

    The removal of the Swiss franc peg to the euro last week by the Swiss National Bank caused huge losses to retail forex traders and brokers. It is unlikely that after this event retail forex trading will be the same ...

  • Why the Swiss National Bank Actually Helped Forex Speculators January 18, 2015

    For the majority of retail speculators it is better losing it all at once and getting on with their life rather than losing their capital slowly over time and wasting many years to find out that profitable  high leverage forex ...

  • Price Action Lab Premium ETF Trading Performance for 2014 December 28, 2014

    The ETF short-term trading system was started on September 2, 2014 and achieved a net absolute return of 7.6% for the year with a total return for SPY in the same period of 4.9%. The performance was based on a fixed percent ...

  • The Year of the V-Bottom December 19, 2014

    If there is a move to all-time highs in S&P 500 following the rally of the last two days, this will amount to a fifth V-bottom this year. All of these recoveries were created by dovish Fed statements near key ...