Precise, no-nonsense definitions for the terms that show up constantly across stock market coverage, fund prospectuses, and crypto whitepapers. Jump to a letter, or read straight through.

ABCDE GILMP SVY
APY (Annual Percentage Yield)
The real annual return on savings or an interest-bearing crypto position once compounding is factored in, as opposed to APR, which does not account for compounding.
Asset Allocation
How an investment portfolio is divided across categories — stocks, bonds, cash, real estate, crypto — to balance expected return against risk tolerance and time horizon.
Bear Market
A sustained decline of 20% or more from a recent market high, typically reflecting expectations of weaker economic growth or corporate earnings.
Blockchain
A digital ledger of transactions duplicated and maintained across a distributed network of computers, secured by cryptography rather than a single central authority.
Blue Chip
A large, well-established, financially sound company with a long history of reliable performance — the term originates from the highest-value chip in poker.
Bull Market
A sustained period of rising asset prices, generally accompanied by investor optimism about economic growth and corporate earnings.
Cold Storage
Keeping cryptocurrency private keys on a device that is never connected to the internet, such as a hardware wallet, to reduce exposure to remote hacking.
Compound Interest
Interest calculated on both the original principal and on interest already earned in prior periods — the mechanism behind most long-term wealth growth.
Diversification
Spreading investments across different assets, sectors, or geographies so that a decline in any single holding has a limited effect on the overall portfolio.
Dividend
A portion of a company's profit distributed directly to shareholders, usually paid quarterly and expressed either as a dollar amount per share or as a yield percentage.
Dollar-Cost Averaging (DCA)
Investing a fixed amount of money at regular intervals regardless of price, which smooths out the average purchase price over time and removes the need to time the market.
ETF (Exchange-Traded Fund)
A basket of securities — such as all the stocks in an index — that trades on an exchange like a single stock, offering instant diversification in one purchase.
Gas Fee
The fee paid to a blockchain network's computers to process and validate a transaction or smart contract, which rises and falls with network demand.
Gross Domestic Product (GDP)
The total monetary value of all goods and services produced within a country over a given period, the most widely used measure of economic size and growth.
Inflation
The rate at which the general price level of goods and services rises, eroding the purchasing power of a currency over time.
Interest Rate
The cost of borrowing money, or the return earned on lending it, typically set as a benchmark by a central bank and expressed as an annual percentage.
Liquidity
How quickly and easily an asset can be bought or sold without significantly affecting its price — cash is maximally liquid; a house is highly illiquid.
Market Capitalization
The total value of a company's outstanding shares, calculated as share price multiplied by the number of shares outstanding — the standard measure of company size.
Market Order vs. Limit Order
A market order executes immediately at the best available price; a limit order only executes at a specified price or better, trading certainty of execution for price control.
P/E Ratio (Price-to-Earnings)
A company's share price divided by its earnings per share, used as a rough gauge of how expensive a stock is relative to the profit it generates.
Private Key / Seed Phrase
The cryptographic secret that proves ownership and authorizes spending of cryptocurrency held at a given address — anyone who has it has full control of the funds.
Smart Contract
Self-executing code deployed on a blockchain that automatically carries out the terms of an agreement once its conditions are met, without a middleman.
Stablecoin
A cryptocurrency designed to maintain a steady value, most commonly pegged 1:1 to the US dollar, used as a low-volatility medium of exchange within crypto markets.
Stock Split
A corporate action that increases the number of outstanding shares while proportionally reducing the price per share, leaving total market value unchanged.
Volatility
A statistical measure of how much and how quickly an asset's price fluctuates — higher volatility means larger, faster price swings in both directions.
Yield
The income return on an investment, typically expressed as an annual percentage of the amount invested or the current price.
Yield Curve
A line plotting interest rates on government bonds of different maturities; an inverted yield curve, where short-term rates exceed long-term rates, has historically preceded recessions.
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Every term here connects back to the fundamentals — if any definition raised more questions than it answered, the full guides go deeper.