MATHEUZERA Investing

Concepts

Compound interest, explained calmly

The most quoted concept in personal finance, with no shortcuts and no promises.

October 16, 20261 min read

Three short reads that build the foundation before any decision.

Emergency fund: the first step before investing
How much to save, where to keep it and why liquidity matters more than returns here.
1 min read
Fixed income and variable income: the difference on one page
One sets the rules of return at the start. The other depends on what happens along the way.
1 min read
Risk, return and diversification
Why higher returns usually come with higher risk, and how to spread risk out.
1 min read

Official figures from Brazil's Central Bank, updated automatically. Each one shows the date it refers to.

Source: Central Bank of Brazil, Time Series Management System (SGS). The panel refreshes every few hours. See the series at the Central Bank (opens in a new tab)

Purchasing power, official indexes and why real return is what matters.

October 16, 20261 min read

The terms that come up most, in one sentence each.

Liquidity: How easily an investment can be turned into available cash without losing value in the process.
Return: The gain or loss of an investment over a period, relative to the amount invested.
Real return: The return after subtracting inflation over the same period.
Compound interest: Interest calculated on the accumulated amount, which already includes previous interest.
Inflation: The general rise in prices, which reduces the purchasing power of money.
Diversification: Spreading money across different assets to reduce the impact of a single problem.
Volatility: How strongly an asset's price rises and falls over a period.
Fixed income: Investments whose rule of return is set when you invest, such as a rate or an index.
Variable income: Investments whose return depends on the market and is not known in advance.
Dividends: The part of a company's profit paid out to its shareholders.
Management fee: The amount a fund charges to manage its investors' money, deducted periodically.
Benchmark index: The reference index that adjusts an investment's return, such as an inflation index.