Guide
OKX Options Greeks: Delta, Gamma, Theta and Vega in Practice
What OKX's four option Greeks measure, how the exchange reports them in dollars and in coin, and how to read them on a coin-margined contract where the payoff is inverse.
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
OKX Portfolio Margin vs Multi-Currency Margin: When Hedging Helps
OKX's portfolio margin is not an upgrade to multi-currency margin. It changes what counts as an offset, and for small or unhedged books it can cost more. Here is the test.
Guide
Binance Spot Scaled Limit Orders vs Futures Scaled Orders
Binance uses the word 'scaled' for two different products. What the spot scaled limit order actually creates, how the futures version differs, and why the distinction changes your risk.
Guide
Binance Spot TWAP vs POV: Execution Risk, Participation and Fees
TWAP fixes the clock; POV fixes the participation rate. How Binance's spot TWAP and VP algorithms differ, what each cannot promise, and what the fees really are.
Guide
The Wash Sale Rule, and Why Crypto Sits Outside It
A loss on a US stock sale is deferred, not lost, if you buy the same exposure back within 30 days. How the window works, what counts as identical, and where the crypto version differs.
Guide
US Dividend Withholding for Nonresident Investors
A US dividend paid to a foreign account is taxed at source before it arrives. What the 30 per cent rate applies to, how Form W-8BEN changes it, and why gains are treated differently.
Guide
Trading Halts: Limit States, Pauses and Reopening
A halted stock is not simply paused. Price bands, limit states and the five-minute pause are separate steps, and the reopening is an auction with its own rules.
Guide
Reg SHO: Locates, Fails to Deliver and the 13-Day List
A short sale in a US equity starts with a borrow, not a trade. What the locate rule requires before an order is accepted, and what happens when delivery fails.
Guide
Where Your Order Goes: Routing and Rule 606
Retail orders are usually not sent to an exchange. What Rule 606 reports must disclose, what best execution requires, and why a fill price alone does not settle the question.