"Aug 7th 2016, A machine intelligence system, called Emma AI, is starting a fund that hopes to outsmart the humans and computers that make a living trading stocks."
In case you haven't heard of this news, here is the summary: someone built a program/AI system, tested for 6 months before August. It traded a handful of stocks and gained 30%. That's 70% annualized. After this initial test, they decided to focus on trading TSLA, GSK, and U.S. Treasury bonds. I suspect the program did better than 30% on these in the first 6 months.
If you are trading, I think it's important to understand other traders (including this AI) so you don't rank below average. Actually, because top 10% traders make almost all the TRADING profit, if you rank below top 10%, you probably will lose money, you may lose fast or slow, depends on how you trade.
Another group of traders are normally identified as shorts, but they actually trade. They first build Put position, then drive down the stock then they either cover or switch to long near the bottom, then repeat. I know one strategy would work for them: keep adding near term (8~12 weeks) Calls while driving down the stock. When it has fell enough, small long traders have all given up, the big shorts add large amount of near term Calls and start to cover, and switch to longs. This rally phase can last 1~3 months. They make a lot of money on the Calls and on the shares purchased near the bottom. Then they repeat. I personally don't know anyone who is doing this, but this seems obvious when I study stocks' price action.
I know lots of people on this board are intelligent longs who hold for the next 10 years. But for those who actively trade (such as buying and expecting the stock to go up by certain date then sell), first understand this is trading, it has nothing to do with investment. Second, make sure you are very familiar with this game before you deploy large amount of fund. Inexperienced traders can lose a lot of money in a very short time. The top traders do well because they eat sucky traders' lunch. Put everything aside, they have a lot of experience and knowledge, and they hire PR companies to help move the stock. Jesse Livermore (the famous trader in early 19th century) used newspaper to influence stock price with success.
Trading has trading rules. Here are my rules:
1. Make sure I understand the value of the company, in case the swing turns wild for extended period, I am willing to treat it as a long term investment and hold for years.
2. Make sure I always have 10% cash reserve and never use it. It's intended for the worst case, but always assume the worst is yet to come. For those who know for sure they have additional cash/income to deal with the worst case or margin calls, I guess the 10% rule doesn't apply. They probably can even use margin.
3. Every stock is manipulated. Although some people say the market is rational and efficient, I don't agree with it. I have seen a stock drop to below it's cash holding, then gain 1000 fold in the next 10 years, it's not even a bubble or short squeeze, it's driven by real earnings. If the market is that efficient, it shouldn't have dropped to below cash in the first place. Another example, in 2013, APPL dropped to cash + 2 years' earnings. That was irrational considering Apple has so many leading products, I essentially get the whole business for free if I bought it and sit for 2~3 years. The manipulation on high growth with debt companies is much more intense. For this reason, I always assume the potential range of swing is much larger than most people assumed.
4. Build the trading position in steps. Don't get all in when I think it bottomed. The first batch is the smallest, then add more after a sizable drop from the first batch, then the third, fourth batch. The entry price of each batch is sufficiently stepped. This is to prevent building all positions within a 5% drop.
5. Take profit in steps if the stock rallies as planned, this is a. to raise cash; b. to maximize profit in case the rally has legs.
6. For trading, the technical charts and indicators are more reliable than fundamentals. If I study really hard, I might successfully predict the company's sales will go up 20% next quarter, so what? on that news, the stock may jump 20% or drop 20% depends on the mood.
7. Options are wonderful if I use it correctly. I found generally there are 4 ways to take the advantage:
a. When a stock rallied to the top band, I can sell covered Calls, instead of selling my position.
b. When I see an attractive entry point, I can sell covered Puts to reduce my cost.
c. When technical indicators tell me a rally or drop is imminent, I can use small amount of money to "gamble" - when possibility to be right X potential gain >>> possibility to be wrong X potential loss.
d. Buy bullish Call spread, or buy bearish Put spread.
e. I found normal purchase of Options based on popular market opinion usually leads to disappointment.
f. This is very important: NEVER sell covered Calls near rock bottom. If you do, the guy who bought your Calls will gain 10~20 fold, you lose your position without upside.
I am mostly a long term buy and hold investor. I think Tesla is highly likely to grow into a giant. However, if you decide to trade, I think it's very helpful to have a set of sound trading rules. More importantly, have the discipline to follow the rules. Otherwise it's very easy to fall into one of the numerous traps. I hope that every Tesla supporter does well.