Lesson Learned from Investing


Stock

Discipline

Be patient

  • Don’t buy stocks if you need the money in a limited time(within 3 months)

Know your stocks

  • history
  • how volatile it is, whether it goes up/down a lot suddenly in the past
  • news

Know the trending

  • whether shorting or buying
  • market is volatile or going up/down
  • political

Diversity

  • Don’t put all eggs in one basket
  • Don’t put more than 1/4 or more than X into any stock
  • It’s not diversity if you buy A with 50% of your money, and some other stocks. You put too much bet on one stock.

Don’t invest all your money

  • always leave plenty of buffer
  • if some stock drop more than 10 percentage, you still have money left to maybe buy more

Be very careful when use margin

  • It’s very addictive, you intend to use it (even you know its not the best opportunity, because if you don’t use it, it may be gone)
  • Dangerous
  • More money, more risk, harder to manage
  • Not predictable
  • Do’t use it unless its really a good opportunity

How to choose a stock

  • Know who are buying/selling the stock
  • don’t be the only few who is buying the stock, or someone are selling the stock (a lot), you are the one of the few who is buying it
  • the volume, don’t buy stock that’s hard to sell it
  • only because the price drops a lot (know why)

Don’t buy the following stocks

  • not familiar
  • only because others recommend it (do your own research)
  • trash company/stock
  • the volume is very low
    • hard to sell, and it may drop a lot very quickly (manipulate by someone, as only few people are buying it)
  • you don’t know why it goes down or up, when it goes up or down, you don’t know how long it will continue
  • you will lose the leverage

When to buy

  • If a stock goes down, don’t just keep buying, buy it only when it drops down 5 percentage etc
  • When you already buy a lot, don’t buy it again when it just drops a little, buy it only when it drops a lot
  • Don’t think buy more at a slight lower price to even the cost, and then sell it quickly

When to sell

Case: Sell it with zero gain or small percentage loss

  • Don’t hope it will (continue to) go up, then you will sell it when you gain (some or a little) profit, it may not in near term
  • Case: When you need sell some stocks (need the money, or you need buy more another stock to cover the loss etc)

How to sell

  • Need a plan
  • Based on how likely it will continue to go up, and how much it may go up
  • Based on how much money in this stock
  • Sell by percentage

Critical moment

For some stocks, it only pops up in very limited time, grasp this opportunity and sell it quickly.
Or you need the money urgently.

  • Know why it goes up, whether its based on rumor, or really have good news

Plan

If you really need sell some stock at specific time, plan it well

  • sleep early, set an alarm so you can get up
  • notice the unusual thing (wnw)
Make important decision carefully, seriously and take action
  • Take time to think the following questions:
  • Do I need money recently
  • Should I play extremely safe recently
  • Whether to sell (bad macro environment or bad news for the company)
  • Should I buy more, when?
  • How to sell

Do research before buying or selling

  • Check news if some unusual things happen
For new IPO stocks
  • be careful before earning dates, lockup expiry

Set limited sell even the stock is currently way below the desired price (for trash stock)

  • sometimes/some day, these stock will go up a lot for a short time

Prefer long term invest

  • much lower tax 15%, compared with income tax which may be 30% or higher Don’t manage(put) too much money on stock
  • Set a limit

Tax Season

Prepare tax as early as possible

  • So you know how much you owe

  • Leave enough more for the tax

  • Be very careful to put the money in stock at this time

    • Stock may(usually) fall during tax season
  • People may sell stock for tax (stock investor)

  • Don’t gamble in such short time period, if it fails, it would be difficult to pay the tax.

TODO

Wash-sale
  • How to make your loss really count as loss
  • Learn to analyze stock graph
  • know history, volatility, volume
Apps

Robinhood for trading

Related:
https://lifelongprogrammer.blogspot.com/2009/04/how-to-save-money.html

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