Guide
Margin Calls: The Arithmetic Behind a Forced Sale
A margin call is arithmetic, not a warning shot. The initial and maintenance percentages in US rules, how equity is measured against them, and why a broker can sell without asking.
Guides
Crypto guides, answered directly
Each guide opens with the answer to the question in its title. Longer pieces include a jump-link contents rail so you can skip to the part you need.
Guides that involve clicking through a real platform interface are only published once we have captured the screenshots ourselves from the official English interface. We do not illustrate steps with recreated or AI-generated mock-ups.
Guide
Extended Hours: What the US Rulebook Stops Doing After 4 p.m.
Pre-market and after-hours sessions are not a longer version of the trading day. The price-band and circuit-breaker machinery is written for 9:30 to 4:00, and that changes the risk.
Guide
T+1 Settlement: Why Sold Stock Cash Is Not Yours to Withdraw Yet
A US equity trade settles one business day after it is struck. What Regulation T requires, what unsettled funds can and cannot do, and where the violations start.
Guide
Iceberg, Post-Only and TWAP: Execution Orders Beyond Market and Limit
Post-only protects the maker side; iceberg splits size; TWAP splits time. What OKX and Bybit document about each, and the limits that constrain them.
Guide
Exchange Verification Tiers: What Each Level Actually Unlocks
Verification is a limit schedule, not a trust score. What Kraken's regulatory tiers require, what they unlock, and why the API key count changes with them.
Guide
When an Exchange Delists a Pair: Deadlines, Withdrawals and Liquidation
A delisting is a dated schedule, not a single notice. What Kraken's October 2026 notice sets out, and why waiting can turn a balance into a minimal liquidation.
Guide
Ethereum Gas: Base Fee, Priority Fee and What a Transfer Costs
Ethereum charges gas units at a price set per block. How the EIP-1559 base fee and priority fee combine, and why a failed transaction still costs.
Guide
Deposit Memos and Destination Tags: Why a Missing Tag Costs a Recovery
Some chains send every customer to one exchange address, and a memo or tag names the account. How the field works, what muxed addresses change, and what a miss costs.
Guide
Crypto Cost Basis: FIFO, Specific Identification and the Records You Need
The IRS treats digital assets as property, so every disposal needs a cost basis. How specific identification works, what FIFO does by default, and the records each method requires.