TetraKits
Financial dictionary
Learn Investing, Crypto & Markets With The World's Simplest Financial Dictionary
Understand stocks, ETFs, crypto, technical analysis, and investing concepts with beginner-friendly explanations.
Popular definitions
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CryptocurrencyWhat Is Ethereum?
What is Ethereum (ETH)? Learn how Ethereum works as a smart-contract blockchain, how ETH is used for gas fees, and how i…
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CryptocurrencyWhat Is Bitcoin?
What is Bitcoin (BTC)? Plain-English definition of Bitcoin, how mining and the blockchain work, and why investors use it…
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CryptocurrencyWhat Is Blockchain?
What is a blockchain? Definition of distributed ledgers, blocks, hashes, and why the design matters for crypto and finan…
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StocksWhat Is P/E Ratio?
What is the P/E ratio? Learn price-to-earnings math, how to compare stocks, and limits of using P/E alone in valuation.…
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StocksWhat Is Market Capitalization?
What is market cap? Definition, large-cap vs small-cap, and how market capitalization reflects company size in public ma…
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Candlestick PatternsWhat Is Doji?
What is a doji candlestick? Definition, types of doji, and how traders interpret indecision at support or resistance.…
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Browse by topic
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Investing Basics
Core concepts every investor should know before buying stocks, ETFs, or crypto.
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Stocks
Equity terms from market cap and P/E ratio to dividends and stock splits.
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ETFs
Exchange-traded funds, index trackers, expense ratios, and tracking error.
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Cryptocurrency
Bitcoin, Ethereum, blockchain, staking, wallets, and on-chain basics.
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Bitcoin ETF
Spot and futures Bitcoin ETFs, custody, creation, and redemption mechanics.
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Technical Analysis
Indicators and price-action tools: RSI, MACD, moving averages, and volume.
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Candlestick Patterns
Single- and multi-candle signals such as doji, hammer, and engulfing patterns.
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Chart Patterns
Classic formations: head and shoulders, flags, triangles, and double tops.
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Dow Theory
Primary and secondary trends, accumulation, distribution, and confirmation.
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Elliott Wave
Impulse and corrective waves, Fibonacci relationships, and wave counting.
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Wyckoff Method
Composite Man, accumulation, distribution, spring, and upthrust concepts.
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Options Trading
Calls, puts, and the Greeks: delta, gamma, theta, and vega.
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Futures Trading
Perpetual futures, funding rates, open interest, margin, and liquidation.
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Macroeconomics
Inflation, GDP, CPI, interest rates, and recession indicators.