What would make me sell: Sometimes there are good reasons to split up. For this part of your journal, compose an investing prenup that spells out what would drive you to sell the stock. We’re not talking about stock price movement, especially not short term, but fundamental changes to the business that affect its ability to grow over the long term. Some examples: The company loses a major customer, the CEO’s successor starts taking the business in a different direction, a major viable competitor emerges, or your investing thesis doesn’t pan out after a reasonable period of time.
Don't borrow money to use for stock market investment. On the stock exchange, borrowed money is known as either gearing or leverage. It is typically used either by companies (to help them finance growth), investment banks and hedge funds (to help juice their returns) or very aggressive traders. There are many spread betting (information here), options trading and day trading strategies that use borrowed money to enhance returns, but it also has a very profound impact on the risks being taken with each trade.
Diversification allows you to recover from the loss of your total investment (20% of your portfolio) by gains of 10% in the two best companies (25% x 40%) and 4% in the remaining two companies (10% x 40%). Even though your overall portfolio value dropped by 6% (20% loss minus 14% gain), it is considerably better than having been invested solely in company E.
Since the underlying businesses operate in differing markets, sectors and countries, their quoted prices move independently as supply and demand in them rises and falls and new information is released to the public about the current business situation. It is the changing of prices that offer investors the opportunity to make a capital gain (or loss) via ownership.
Finally, one point to mention is that a given cryptocurrency can be listed in more exchanges, with different listing prices (see below – Arbitraging). The best place to look for a cryptocurrency listing in term of total market capitalisation is Coinmarketcap. Cryptocurrencies are listed per descending order of market capitalisation; the site also allows to deep-dive on each cryptocurrency to see their value over time and where they are listed. Some cryptocurrencies may be listed on several exchanges but only 1 or 2 exchanges may see the critical mass of transactions taking place.

For example, there may be three buyers who have placed orders for buying Microsoft shares at $100, $105 and $110, and there may be four sellers who are willing to sell Microsoft shares at $110, $112, $115 and $120. The exchange (through their computer operated automated trading systems) needs to ensure that the best buy and best sell are matched, which in this case is at $110 for the given quantity of trade.


The cryptocurrency market, while far from being in its infancy, is an extremely volatile market which is not subject to regulations, and thus can be subject to manipulations of all kind. There are many trends which impact operations on a daily basis: rumours can fuel the price of one cryptocurrency, some people or groups can apply « pump and dump » techniques etc. I will try to cover these, but please take good note of the following warning:
It’s all fun and games until the taxman passes. There is no clear legislation on taxes and it varies on per case and per country basis. My personal recommendation is to declare the money you cash out on your tax form. This would normally be taxed as « financial income money », just like if you sold shares or cashed out money from the income of your own company (like when you get paid dividends). Example: 15% financial income tax. You cash out 10000 EUR, you get taxed 15% on this.
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