The following is my own summary of past mistakes, dos and don’ts…

Do Nots
1. Thou shall not buy and hold an IPO on its first day.
(my lesson from NINE, LFT and GSIT)

2. Thou shall not try to catch a falling knife.
(my lesson on Nokia, Crocs after bad earning report)

3. Thou shall not average down for an unproven stock.
(my lesson from SNDA, LFT)

4. Thou shall not bet on earnings.
(Except use option, and bet only lunch money)

5. Thou shall not buy and hold a good stock at bubble price.
(Vanke, China Merchants Bank)

6. To be continued…

Reference: my stock lessons (I to VII).

Mistakes
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I think I tend to make more mistakes when my account has money: e.g., the LFT buy, not just the loss itself, but taking away my attention from CROX.

My un-scientific rules (from my own exp)
1. Take some money off the table if already up big percentage, don’t be too greed (CROX Oct 31. earning lesson);

2. Swing to lower cost, if bought too high initially, leave some money at the side;

3. A stock needs consistent attention, may turn out to be not good (NINE, CROX); vice versa (MR)

4. Retailer is not as good as wide moat co in the long run (CROX, SBUX vs. K), but how about MCD, exception?

5. Buy the stocks when
5.1 The market is weak (the company fundamental is fine)
5.2 Barron article bashing (CROX in June; recently Berkshire)

6. Sell the stocks when
6.1 People are all excited about it, news media all over it. Couple months ago the top 10 richest Chinese has 6 or 7 from real estate business.

To do
1) Learn more about fundamental analysis, working toward CFA?

2) Be more focus, less emotion,