Finance, one concept at a time.

Short, plain-English explanations of the ideas that actually run markets — no jargon walls, no prerequisites. Start anywhere.

Equities

What is a stock?

What you actually own when you buy a share, and the two ways it makes you money.

4 min read
Equities

What is market capitalisation?

Why the share price alone tells you nothing, and how to size a whole company.

4 min read
Equities

What is the P/E ratio?

The market’s favourite valuation multiple — and why a high one isn’t "expensive".

5 min read
Fixed Income

What is a bond?

Lending, not owning: coupons, face value, maturity, and why bonds sit below equity.

4 min read
Fixed Income

What is the yield curve?

A map of interest rates across time — and why an inverted curve spooks markets.

5 min read
Macro

What do central banks do?

Guardians of money: interest rates, inflation targets, and lender of last resort.

4 min read
Macro

What is inflation?

Why prices rise, how it’s measured, and what it does to stocks and bonds.

6 min read
Accounting

What is a balance sheet?

What a company owns and owes — and the one equation that always holds.

4 min read
Derivatives

Call and put options, explained

The right — not the obligation — to buy or sell, and how calls and puts pay off.

6 min read
Investing

Risk and return: the core trade-off

What "risk" really means, the risk premium, and why your time horizon matters.

5 min read