Where are the Trends?

Discussion in 'Trading' started by AFJ Garner, Apr 24, 2013.

  1. In his interesting research paper “Where are the Trends?” Martin Estlander seeks an answer as to why his trend program is in the worst drawdown in its history. Many traditional trend followers are in a similar situation.

    His answer is that the past two years have seen very few strong trends in the aggregate – at least as regards:

    His program’s portfolio; and
    The 6 month trends which he seeks to capture.

    He sets out to show, graphically, the historic frequency of strong 6 month trends since his program’s inception in 1992 using the following methodology:

    “Let us take a look at how the opportunities for trend following have been. There are many ways of measuring market trendiness. Here we choose a trend opportunity measure that counts the number of strong trends based on the return over the past six months from the highest high or lowest low to the current price, for each of the instruments. We then add relevant instruments for each market segment. A higher reading means that a larger number of meaningful trends have occurred and a lower reading means a lower number of aggregate number of meaningful trades over the past six months.”

    I am not at all certain from this description how “strong trends” were measured for these purposes and so I decided to take a slightly different approach, which seems to have produced very similar results. I took a reasonably balanced portfolio of around 100 futures, some of them going back as far as 1970. I used ratio adjusted prices. For each day of the test, instruments which were at a 6 month highest high or a 6 month lowest low were assigned a score of “1”; else “0”. For each day of the test, such scores were added together and the sum was divided by the number of instruments for which data existed on the relevant day. Thus expressing the number of instruments at 6 month highs or lows as a percentage of the total portfolio of instruments as it stood on the relevant day.

    I then smoothed the data in three different ways to produce 3 different but very similar charts.

    My results clearly support Martin Estlander’s findings that the large number of strong trends peaked in 2008 (on an annual basis) and hit a historic low in 2012.

    Long term trend following has undoubtedly become more difficult over the past 40 years. I won’t speculate further on the well rehearsed and frequently aired reasons for this, nor on the fact that the past two years seem to stand out as a particularly difficult period.

    Some analysts believe that trend following is a dangerous illusion doomed to failure and that trends simply do not exist in a purely random market; or in an “efficient” market.

    My own belief is that markets are neither perfectly efficient nor wholly random in the longer term and that trends will continue to unfold with changing economic circumstances and evolving valuation assumptions. I believe that more frequent stronger and longer trends will once again emerge and that traditional long term trend following will resume its profitability; but methods will need careful adjustment over time to take account of changing market conditions.

    Anthony FJ Garner
  2. toolazy


    i believe that markets are more efficient with all the HFT & co and trend following may be thing of the past and possibly a trap.

    8 out of 10 believes in follow the trend.

    So if there is obvious trend, price will be higher than what is should be due to these 8 out of 10 entering position.

    and when exiting position at say common TF exit point price will be lower that should be if no trendfollowers. So it will be trendfollower eats trendfollower situation.

    When moving average will be applied as proof that TF still works, one will quietly ignore the fact that entry & exit slippage increased to compensate for extra length of trend.

    just my experience with tf....