ostium promo code, and what it is documented to give
The Ostium referral binds by link and carries an unconfirmed claim, against an opening rate of 0.03% to 0.1% on notional that it does not change.
Ostium describes its arrangement as follows: referrers earn 'Bonuses', a percentage of the scores earned by traders they refer, across five referrer tiers set by all-time referred volume. Referred users receive 'Boosts' to their own trading scores, sized by the referrer's tier. Rewards are points/score based, not a stated fee discount. Every part of that is the venue's own claim and none of it has been confirmed here, so this page attaches no figure to it and treats it as a description rather than a benefit (Ostium referral page).
what the Ostium referral gives
Ostium describes its arrangement as follows: referrers earn 'Bonuses', a percentage of the scores earned by traders they refer, across five referrer tiers set by all-time referred volume. Referred users receive 'Boosts' to their own trading scores, sized by the referrer's tier. Rewards are points/score based, not a stated fee discount. Every part of that is the venue's own claim and none of it has been confirmed here, so this page attaches no figure to it and treats it as a description rather than a benefit (Ostium referral page).
whether it is confirmed, and when it was checked
Nothing about the referred side of this arrangement is confirmed. The registry was reviewed on 2026-08-27 and the description Ostium publishes was what it found, so the benefit stays recorded as the venue's own claim until Ostium publishes a figure that can be quoted. Ostium's own announcement describes the tier structure but publishes no bonus percentages, boost percentages or tier volume thresholds: unconfirmed. The tracking link is operator-held and resolves to app.ostium.com/trade with the referrer attached, so it lands the reader on the trading screen rather than on Ostium's referrals explainer.
how it meets the Ostium fee schedule
The Ostium arrangement changes no line of the Ostium fee schedule. Opening costs 0.03% to 0.1% of notional with the referral and the same without it, which the two right-hand columns show by carrying identical figures. Whatever the arrangement moves sits outside the fee a position pays to open, so a reader planning cost should plan on the undiscounted rate.
| Class | Opening rate | Fee at 10x without the referral | With it |
|---|---|---|---|
| gold | 0.03% | $0.30 | $0.30 |
| currency pairs | 0.03% | $0.30 | $0.30 |
| equity indices | 0.03% | $0.30 | $0.30 |
| commodities other than gold | 0.05% | $0.50 | $0.50 |
| exchange traded funds | 0.05% | $0.50 | $0.50 |
| the two emerging-market currency pairs | 0.05% | $0.50 | $0.50 |
| equities | 0.06% | $0.60 | $0.60 |
| cryptocurrency | 0.1% | $1.00 | $1.00 |
Opening cost on a $100 collateral, computed from the Ostium schedule at 0.03% to 0.1% of notional. Carry is excluded, and where a rate varies by asset class each class is listed separately.
who is eligible for it
Attribution on Ostium is set by the referral link at first arrival, which means there is no code to type later and an account opened directly cannot be attached to the arrangement afterwards. Beyond that, Ostium states 6 jurisdictions it does not serve, and its identity requirement is recorded as unconfirmed, so eligibility for the arrangement is bounded by eligibility for the venue itself (Ostium terms).
what the referral link does not do
the referral link does not raise the Ostium ceiling above 200x, does not widen room to liquidation at any rung, and does not change the loss cap at the collateral per trade. At 200x a $100 collateral on Ostium controls $20,000 and the distance to liquidation is 0.375%, with or without the arrangement. It leaves the rollover fee untouched as well, which on Ostium accrues continuous per block.
No per-instrument excursion record exists for Ostium here, because the registry holds its ceilings per asset class rather than per ticker, so no survivable rung is computed for it. What can be stated is the shape of the cost: $0.30 to $1.00 to open at 10x and $6.00 to $20.00 at 200x, on the same $100 collateral.
the two decisions that dwarf the Ostium arrangement
Opening cost on Ostium runs from $0.30 to $1.00 at 10x to $6.00 to $20.00 at 200x on a $100 collateral, and the spread across the venues pricing 10x is $0.88. Against those two figures the Ostium arrangement counts for nothing measurable, because Ostium publishes no number for the referred side of it beside its 0.03% to 0.1% rate. The venue and the rung each move real money on Ostium, and the referral link moves an amount nobody has published.
the Ostium terms that hold either way
Opening a $100 collateral at 10x on Ostium costs $0.30 to $1.00, the ceiling is 200x, the loss stops at the collateral per trade and the carry rate is published. Those four terms decide the outcome of a position, and each of them is stated in full on the Ostium review with the document it came from.
The liquidation rule behind that loss cap is stated by Ostium as a formula, and it is written out in full with its worked thresholds on the review page. Read it before the referral link rather than after, because the room it leaves at 200x is the term that ends a position on Ostium.
MarketMoves earns a commission when a reader opens an account through a link on this page. It costs the reader nothing and does not change the figures shown. Venue registry 2026-08-27b, reviewed through 2026-11-27. Every cost here is an opening cost: 0 of the 1 venues publish no carry rate, so no figure on this page contains the cost of holding a position open.
Figures on this page were rebuilt 2026-08-27 by the MarketMoves editorial desk, from the sources named in the methodology. Nothing here is a forecast, and none of it is advice.