Concepts
Guide
The terms you keep hearing — what they mean, with examples and where they matter.
Positions & Risk
9 ArticlesFrom placing an order to sizing a position: the decisions that determine whether you stay in the game.
Diversification: How Many Baskets Are Enough?
03Owning ten different stocks is not the same as owning ten different risks.
3 Min Read
What Do Long and Short Mean?
04Profiting from a rise versus profiting from a fall — and why the two are nothing like mirror images.
3 Min Read
What Is Leverage — and Why You Should Stay Away
05Carrying a position on borrowed money. It multiplies gains and losses alike — but what it really takes is your right to decide when to sell.
6 Min Read
Investor Psychology: The Most Expensive Mistakes
06The weakest link in your portfolio is usually not a stock but a habit.
4 Min Read
What Is a Short Squeeze?
07A stock doubling not because anyone wants it — but because the sellers are forced to buy it back.
5 Min Read
Options: Calls, Puts and the Anatomy of a Premium
08A way to trade direction without owning the stock — and why the clock inside the premium always runs against the buyer.
5 Min Read
Hedging: What Protection Costs
09Reducing risk without selling the position — and why every hedge sends an invoice.
8 Min Read