Trading Rules

1. Scope

These Trading Rules govern the placement, handling, matching and settlement of orders on all OSL-TRADE trading venues, including spot markets, perpetual futures and dated futures. They apply to every account holder, authorised sub-account and connected API client that submits orders to the platform.

The Trading Rules are incorporated by reference into, and form part of, the OSL-TRADE Terms & Conditions. Where these rules conflict with the Terms, the Terms prevail. We may amend the Trading Rules from time to time to reflect changes in market structure, technology or applicable regulation; the version published on this page is the version in force. This document is provided for general information about how our markets operate and does not constitute legal, tax or investment advice.

2. Order types

OSL-TRADE supports the following order types. Availability of a given type may vary by market, product and account tier.

• Market order — executes immediately against the best available prices in the order book until filled. The final average price is not guaranteed and may differ from the last-traded price.
• Limit order — executes only at your specified price or better; any unfilled quantity rests in the order book.
• Stop and stop-limit orders — remain inactive until a trigger price is reached, at which point they are submitted as a market or limit order respectively.
• Post-only — a limit order that is rejected if it would execute immediately, ensuring it only adds liquidity and pays the maker fee.
• Immediate-or-cancel (IOC) and fill-or-kill (FOK) — time-in-force instructions that fill as much as possible instantly, then cancel the remainder or the entire order.
• Good-til-cancelled (GTC) — rests in the book until fully filled or cancelled by you.
• Reduce-only (derivatives) — may only decrease an open position and will never open or increase one.

3. Matching & priority

Orders are matched on a continuous basis using strict price-time priority. Among resting orders at the same price level, the order that arrived first is executed first (first-in, first-out). Better-priced orders always take precedence over inferior-priced orders.

Self-trade prevention automatically cancels or reduces resting quantity to stop an account matching against its own opposing order. The matching engine timestamps orders on receipt at the venue, and this timestamp — not the time the order left your system — determines queue position. Partial fills retain their original time priority for any remaining quantity.

4. Market integrity

All participants must trade fairly and must not engage in conduct that distorts the market or misleads other participants. Prohibited practices include, without limitation:

• Wash trading and other transactions that involve no genuine change in beneficial ownership.
• Spoofing and layering — entering orders without intent to execute in order to move prices or mislead the book.
• Front-running, and trading on the basis of material non-public information.
• Coordinated schemes intended to manipulate price, volume or reference rates.

OSL-TRADE operates real-time and post-trade surveillance across all markets. We may investigate suspicious activity, request information, restrict or close accounts, cancel affected trades, and report conduct to the relevant regulator or law-enforcement authority where required.

5. Settlement

Spot trades settle instantly on execution: the bought asset and the proceeds of the sold asset are credited to your available balance in real time, net of applicable fees. You may only sell assets that are held and unencumbered in your account at the time of execution.

For derivatives, positions are marked to a reference mark price on a continuous basis. Perpetual contracts exchange periodic funding payments between long and short holders to keep the contract price aligned with the underlying index. If margin falls below the maintenance requirement, positions may be reduced or liquidated automatically by the risk engine, and any resulting shortfall remains your responsibility.

6. Fees reference

Trading fees are charged on execution and are determined by whether your order adds liquidity (maker) or removes it (taker), by your 30-day trading volume and by your account tier. Funding payments, deposit and withdrawal costs, and any network fees are separate from trading fees.

The schedule in force at any time is published on the Fees page, which prevails over any figures quoted elsewhere. Fee changes take effect from the date they are published.

7. Suspensions

OSL-TRADE may halt, suspend or restrict trading in any market where necessary to protect market integrity or participants — for example during extreme volatility, on suspected system fault or manipulation, on a corporate or network event affecting an asset, or to comply with a regulatory or legal requirement.

During a halt, resting orders may be cancelled and new orders rejected. We may cancel or adjust trades executed at clearly erroneous prices, and we may delist an asset or contract on notice. Where practicable we will communicate material halts and delistings through Announcements, but action may be taken without prior notice where speed is required.

8. Contact

Questions about these Trading Rules, market operations or a specific order or trade can be directed to our team through the Support Center or the Contact page. For live market notices, see Announcements.