Greetings, I'm a 'long-term' trader who is looking to expand his horizons with shorter term trading.
I've noticed while browsing various forums that many day-traders appear to make frequent use of technical indicators in their trades. I've personally done extensive backtests on roughly forty of the more popular technical indicators using end of day data. Stocks were held for one week, and the indicators were used on the basis of whether to skip a trade or not. The results were dismal to say the least. From the stock universe I used, not a single indicator raised the probability of receiving a winning trade over the time frame (6+ years.) Some did outperform the underlying stocks during the bear market, and a few outperformed the underlying stocks during the bull market. And a very select few even managed to beat the basic buy and hold strategy slightly over the time frame -- but once transaction costs of more frequent trading were factored in, those select few too became losers.
The results, as you might guess, suggested to me that technical indicators in general are next to worthless, at least on longer time frames. Unfortunately, I have no (cheap) resource for historical intraday data, so testing any further is out of my reach.
What do you make of these results? Do you feel that technical indicators used intraday are somehow different than when used end of day in a way which causes them to work? Are their failings merely a result of them being public now, wherein the returns that might have once been gleaned from them have gradually been arbitraged out? Or are the successful results some day traders have had using technical indicators merely a result of random outliers that are unlikely to continue into the future?
I've noticed while browsing various forums that many day-traders appear to make frequent use of technical indicators in their trades. I've personally done extensive backtests on roughly forty of the more popular technical indicators using end of day data. Stocks were held for one week, and the indicators were used on the basis of whether to skip a trade or not. The results were dismal to say the least. From the stock universe I used, not a single indicator raised the probability of receiving a winning trade over the time frame (6+ years.) Some did outperform the underlying stocks during the bear market, and a few outperformed the underlying stocks during the bull market. And a very select few even managed to beat the basic buy and hold strategy slightly over the time frame -- but once transaction costs of more frequent trading were factored in, those select few too became losers.
The results, as you might guess, suggested to me that technical indicators in general are next to worthless, at least on longer time frames. Unfortunately, I have no (cheap) resource for historical intraday data, so testing any further is out of my reach.
What do you make of these results? Do you feel that technical indicators used intraday are somehow different than when used end of day in a way which causes them to work? Are their failings merely a result of them being public now, wherein the returns that might have once been gleaned from them have gradually been arbitraged out? Or are the successful results some day traders have had using technical indicators merely a result of random outliers that are unlikely to continue into the future?