What to do after your first tradeDual investment, shark fin, options, crypto loans, arbitrage, oil perpetuals: the more features, the more you need to know each one's worst case. Use the finder to match a feature to your goal, and sign up with OK66688 for 20% off spot and futures fees for life.
OKX usually offers several ways to do the same thing. Say what you want and what you hold, then look at each feature's worst case.
Risk roughly rises down the table. You don't need them all; one or two that match your goal are enough.
| Feature | In one line | Worst case | Suits | Risk |
|---|---|---|---|---|
| Shark fin | Same asset back at expiry; higher APR inside a price range | Minimum APR only; funds locked | Idle funds, no price view | Low |
| Spot trading | Buy and sell coins with USDT | Prices fall, paper loss | Everyone's first step | Lower |
| Dual investment | Buy low or sell high at a target, paid while you wait | Converted into a falling coin, or sold too early | People already planning to buy low or sell high | Medium |
| Options (buyer) | Pay a premium for the right to buy or sell at a set price | Lose the whole premium | Hedging, defined-risk bets | Medium |
| Funding rate arbitrage | Spot long + perpetual short, collect funding | Negative funding, fees, liquidation of the short | People who know futures and costs | Medium |
| Crypto loans | Pledge BTC or ETH, borrow USDT | Price drop triggers liquidation of collateral | Short-term needs with a repayment plan | Higher |
| Options (seller) | Collect premium, take on the obligation | Losses can far exceed the premium | Experienced traders | High |
| Oil perpetuals | Trade Brent and WTI with USDT margin | Gap moves liquidate leveraged margin | Futures traders who follow oil | High |
All rewards come from OKX. We only explain the rules and provide the code. We never handle funds, pick coins, give signals or manage money, and we never ask for passwords or codes.
Code OK66688 is linked to your account at sign-up, so spot and USDT-margined futures, including oil perpetuals, use discounted fees with no end date. Arbitrage and hedging trade on two legs, so the savings show quickly.
See how much you saveComplete identity verification, a first deposit and a first trade to claim rewards in the app's Rewards Center. Campaign pages advertise boxes of up to 60,000 USDT; most people receive small amounts, and the Rewards Center is authoritative.
Four steps to sign upOKX demo trading lets you open and close futures, set stops, see liquidation and follow option settlement with virtual funds. Advanced features have many rules; make mistakes in demo first.
How options workAdvanced products sound safe: earn, arbitrage, insurance. The losses usually come from not knowing the worst case.
Higher APR means higher conversion odds. Converting into a falling coin costs far more than the interest. Can you lose money?
Selling options wins small and often, then one big move takes it all back, with no loss cap. Risks of selling options
Borrowed USDT spent on more coins means collateral and new coins fall together, and liquidation comes fast. How much is safe to borrow
USDT spreads are tiny and strangers' money can be tainted, which freezes bank accounts. Guaranteed arbitrage is usually a scam. Why P2P arbitrage is risky
Enter your rough monthly volume (buys, sells, opens and closes all count). For arbitrage and hedging, fees are usually the biggest cost.
| Trade type | No code | With OK66688 |
|---|---|---|
| SpotBTC, ETH and all other coins | 0.080% / 0.100% | 0.064% / 0.080% |
| USDT-margined futuresIncluding oil perpetuals | 0.020% / 0.050% | 0.016% / 0.040% |
| One funding rate arbitrage10,000 USDT spot + equal short, taker in and out | ~30 USDT | ~24 USDT |
| Discount period | — | Permanent |
You pay fees when you buy and when you sell; arbitrage and hedging trade on both spot and futures, so fees are the main cost. Estimates use OKX regular-user rates with a 20% discount; OKX's fee page is authoritative. Dual investment, shark fin and loans do not charge trading fees.
No need to turn everything on; unlock what you use. Find a feature first
Our buttons open the OKX sign-up page with OK66688 filled in. Verify any OKX link in the app under Official Verification.
Use a fresh password, turn on an authenticator app and set a withdrawal allowlist.
Upload your own ID and complete face verification. Dual investment, futures, options and loans all require it.
OKX asks you to read risk notes or answer a short quiz before enabling futures or options. Try it in demo trading, then go live small.
Arbitrage, hedging and futures mean more trades, so fees matter more. Enter referral code OK66688 when you sign up and pay 20% less on every spot and futures trade, for good
News as of 2026-09-28, each with its source. For context only, not trading advice.
CoinGlass data on 27 September: the crypto Fear and Greed Index stood at 69, down 6 points on the day, with a 7-day average of 72 and a 30-day average of 66.
ChainCatcherOne of the largest quarterly expiries of 2026, with max pain near $75,000 while BTC traded around $83,500. Big expiries shift option prices and dual investment APRs.
FinanceFeedsPerpetual futures based on ICE Brent and WTI crude prices, margined in USDT, available where OKX is licensed to offer perpetuals.
Oil perpetuals explainedDoppler Finance (XDP) opened XDP/USDT spot trading at 13:00 UTC on 28 September, with USDT-margined perpetuals the same day. New listings are extremely volatile.
OKX Help CenterOKX linear options use USDT for premiums, margin and settlement, so you can trade options holding only USDT and read profit and loss in dollars.
OKX LearnHeld alongside Token2049, OKX will present updates on X Layer, OKX AI and more. New features go live according to OKX announcements.
Traders UnionDual investment, options, crypto loans, arbitrage, oil perpetuals and market tools. Each guide starts with the worst case, then explains how to use it.
Whether it can lose money, how to pick a target price, why the APR is so high, and whether shark fin protects your principal. Includes a settlement calculator.
Options · Maximum loss for buyersCalls and puts, the most a buyer can lose, options vs futures, and why expiry days move the market.
Loans · When liquidation happensBorrow without selling: loan interest, what LTV means, and how much you can borrow before liquidation gets close.
Arbitrage · Funding rate mathsFunding rate and cash-and-carry arbitrage, why P2P arbitrage freezes bank accounts, and how to spot 'risk-free' scams.
Oil · Brent and WTI perpetualsICE Brent and WTI perpetuals, Brent vs WTI, trading hours and weekend gaps, leverage and availability.
Tools · Fear and greed indexFear and Greed Index, liquidation data, funding rates, whale alerts and the data already inside the OKX app.
Besides spot trading: futures, options, Earn products such as dual investment and shark fin, crypto-backed loans, trading bots (grid, recurring buy), demo trading, a Web3 wallet, and in some regions oil perpetuals.
Use dual investment to buy low or sell high at a target, shark fin for idle funds, puts to insure holdings, loans to raise cash without selling, or funding rate arbitrage. Each has its own risks.
Get comfortable with spot, withdrawals and stop orders first, then try shark fin or a small dual investment for a clear goal. Futures, selling options, oil perpetuals and borrowing to buy more are the riskiest.
Shark fin returns the same asset at expiry and is lower risk; dual investment can convert you into the other asset. Both lock funds until expiry.
Option buyers can lose at most the premium and cannot be liquidated; leveraged futures can be liquidated. Options lose value over time; perpetuals charge funding.
Borrow USDT against BTC or ETH and repay later. Borrow less to stay safe, ideally under 40% LTV, and don't use the loan to buy more.
OKX and ICE launched oil perpetuals, and there are gold-related products, but availability depends on your region; the app shows what you can use.
Spot and futures fees, including oil perpetuals, are discounted. Dual investment, shark fin and loans don't charge trading fees, but you still save on the trades around them. OK66688 works for life.
Our code is OK66688. Enter it in the optional referral field at sign-up, or use our buttons, for 20% off spot and futures fees for life. It can only be added when you create the account.
No. This is an independent educational site. We don't pick coins, give signals, manage money, run arbitrage projects or groups, or offer log-in, deposits or custody. We may earn a commission if you sign up through our links, at no extra cost to you.
20% off every spot and futures fee, for life. It adds up fastest on arbitrage, hedging and oil perpetuals.