Token market not applicable in this edition · Research checked 2026-09-22. A dated listing notice does not confirm current pair availability or regional access; check the venue before trading.
2024-10 source ↗detailspublic mainnet Oct 2024 (private mainnet from Aug 2024)
Trading fees (base tier)
0.06% per trade source ↗detailsno maker/taker model: one-time opening fee by pair, live 1-6 bps (crypto 6, stocks 3, ETFs 3, forex 2-5, commodities 2-5, indices 1-3) per the docs' live fee table; docs prose still says 3-10 bps. Plus $0.10 oracle fee (refunded on full close) and rollover; no closing fee except early-close fee (profitable close <15s, 40->0 bps)
Maximum leverage
200× source ↗detailsmajor FX pairs (EUR/USD, GBP/USD, USD/CAD, USD/CHF); docs also list BTC/ETH and US500/US30 at 200x, but on-chain group caps show crypto and indices at 100x
Perp markets
About 82 · includes stocks, commodities or FX source ↗details35 stocks, 8 ETFs, commodities, indices, FX, 9 crypto
No KYC step in onboarding source ↗detailsconnect via email login (Privy smart account) or Web3 wallet; no identity step described
Restricted regions
United States, United Kingdom, European Union, Philippines, US comprehensively sanctioned jurisdictions incl. Iran, Syria, Cuba, North Korea, Crimea, Donetsk, Luhansk source ↗
Audits
Zellic (Feb 2024, Nov 2025); Three Sigma (Feb-Mar 2024); Pashov Audit Group (Jan 2025, Apr 2025, Jan 2026) source ↗
Incidents
2026-07-15: LP (OLP) vault exploited for 23,752,746 USDC via compromised off-chain price-feed infrastructure; trader collateral unaffected; trading resumed 2026-07-23; recovery plan for OLP holders source ↗
Points program
Live source ↗detailslast official points promotion seen 2026-07-14 ('2X points on BRENT, WTI, US500, XAU & USD/JPY'); app still has a 'Points & Rewards' page; status after the 2026-07-15 OLP exploit not restated in official posts
Referral program
Yes; no fixed benefit for the referred trader is confirmed source ↗
From Ostium’s own documentation, terms, API or official posts, checked 08 Oct 2026. Terms change; confirm on the venue before trading. “Not verified yet” means we could not confirm it from an official source.
TEAM AND TRACK RECORD
Who is behind Ostium
6 of 7 checks confirmed
✓Team publicly namedFounders are publicly named
✓Founders’ prior experience statedKaledora Kiernan-Linn: Harvard graduate; former dancer with the Royal Danish Ballet; Marco Antonio Ribeiro: Harvard graduate; former competitor in the International Olympiads for physics, biology and chemistry
✓Funding disclosedGeneral Catalyst, Jump Crypto
✓Security audit publishedZellic (Feb 2024, Nov 2025); Three Sigma (Feb-Mar 2024); Pashov Audit Group (Jan 2025, Apr 2025, Jan 2026)
✗No major incident on record2026-07-15: LP (OLP) vault exploited for 23,752,746 USDC via compromised off-chain price-feed infrastructure; trader collateral unaffected; trading resumed 2026-07-23; recovery plan for OLP holders
✓Live for more than a year2024-10
✓At least 6 months of activity data180 days of daily open interest
Founders
Kaledora Kiernan-Linn · Co-founder & CEO: Harvard graduate; former dancer with the Royal Danish Ballet news report ↗
Marco Antonio Ribeiro · Co-founder: Harvard graduate; former competitor in the International Olympiads for physics, biology and chemistry news report ↗
Series A · 2025-12-03 · $20M · General Catalyst, Jump Crypto news report ↗
Affiliation: Services provided by Ostium Foundation; software developed by Ostium Labs Co. (per Terms of Use) source ↗
A checklist of facts we could verify from official sources (investor announcements and, for funding only, labelled news reports). “–” means not verified, not “no”. It is not a safety rating and not investment advice: strong backers do not prevent losses, and anonymous teams are common in DeFi.
FROM THE TEAM
Latest from Ostium
No blog feed is published; follow the official channels below.
Headlines and links from the venue’s own blog feed, checked daily; channels verified as linked from the venue’s website. Beware of look-alike accounts.
IS IT GROWING?
Ostium trend: Declining
0 metric(s) up, 1 down, 0 without a material change. The label counts metric directions; it is not a score and not investment advice.
Rank by open interest: #30 now · #33 30 days ago (among venues reporting that day)
Metric
30 days
90 days
Coverage
Reading
Open interest
-39.6%
-88.1%
100%
Materially weakening (30d and 90d agree)
User fees
-49.0%
-86.3%
97%
Base too small for a reliable direction
Trading volume
—
—
—
Not enough daily history yet
Thresholds: open interest ±25%, fees ±30%, volume ±40% over 30 days; the 90-day move must agree at half the threshold. Incentive campaigns can lift activity temporarily.
HISTORY
Activity over time
Open interest · daily
DefiLlama daily open interest · 180 days · 11 May 2026 – 06 Nov 2026
$8.71M
Gaps are not joined. The scale starts near the series minimum, not at zero.
Ostium: common questions
What is Ostium’s open interest?
Ostium had $8.71M of open interest according to DefiLlama on 08 Nov 2026 · 00:25 UTC, ranking #30 of 50 perp DEXs we track by open interest. That is 0.1% of the combined open interest of the tracked venues.
How much do traders pay in fees on Ostium?
Traders paid $58.74K in fees over the last 30 days according to DefiLlama, -49.0% compared with the previous 30 days.
Is Ostium growing?
Our current reading is “Declining”. Average open interest over the last 30 days changed -39.6% versus the prior 30 days. The reading updates daily and requires sufficient history and a minimum base.
Does Ostium have a token?
We have not verified a tradable Ostium token. Beware of look-alike tokens using the name.
What are Ostium’s trading fees?
0.06% per trade at the base tier, according to Ostium’s fee documentation. Higher-volume tiers and promotions can differ.
What is the maximum leverage on Ostium?
Up to 200× on some markets, according to Ostium’s documentation. Most markets allow less.
Does Ostium require KYC?
No kyc step in onboarding, based on Ostium’s terms and sign-up flow. Access rules can change by country.
Is there a Ostium airdrop or points program?
We have not found a confirmed Ostium token or airdrop in official sources. A points program is live according to Ostium’s documentation; points carry no guaranteed value or token claim. Beware of fake “claim” sites; use only links from the official website.
Is Ostium safe?
No exchange is risk-free. Ostium confirms 6 of our 7 track-record checks (named team, founder experience, funding, audit, incident history, time live, data history). Leverage can liquidate your collateral regardless of the venue. Read the audits and incidents above before depositing.
Has Ostium been audited?
Ostium lists audits by Zellic (Feb 2024, Nov 2025); Three Sigma (Feb-Mar 2024); Pashov Audit Group (Jan 2025, Apr 2025, Jan 2026), according to its documentation. An audit covers specific contracts at a point in time; it does not guarantee that funds are safe.
Has Ostium had security incidents?
2026-07-15: LP (OLP) vault exploited for 23,752,746 USDC via compromised off-chain price-feed infrastructure; trader collateral unaffected; trading resumed 2026-07-23; recovery plan for OLP holders (from Ostium’s own posts or docs).
Does Ostium have a referral program?
Yes; no fixed benefit for the referred trader is confirmed.
OBSERVED DEVELOPMENT
Activity over time
Data first. Interpretation follows.
These are dated observations or source-reported daily totals, not a growth rating. A formal direction needs 60/180 comparable days and the coverage checks in our methodology.
RAW OBSERVATIONS
User fees · daily
Source-reported complete UTC day
$365.00
237 dated points · Source-dated complete UTC days · Chart scale starts near the series minimum, not zero. Gaps and marked breaks are not joined.Source and scope
DefiLlama fees overview (dataType=dailyFees), defillamaId 4932 slug 'ostium', sum of 90 complete UTC daily values; provider chart reconciled to reported total30d · Source ↗. Last sample 2026-11-07 UTC. Source-reported calendar-day totals are not rolling snapshots. 3 source correction days have no plotted value.
RAW OBSERVATIONS
Protocol revenue · daily
Source-reported complete UTC day
$295.00
240 dated points · Source-dated complete UTC days · Chart scale starts near the series minimum, not zero. Gaps and marked breaks are not joined.Source and scope
DefiLlama fees overview (dataType=dailyRevenue), defillamaId 4932 slug 'ostium', sum of 90 complete UTC daily values; provider chart reconciled to reported total30d · Source ↗. Last sample 2026-11-07 UTC. Source-reported calendar-day totals are not rolling snapshots.
RAW OBSERVATIONS
TVL
Daily source observations
$2.27M
90 dated points · source observation · Chart scale starts near the series minimum, not zero. Gaps and marked breaks are not joined.Source and scope
DefiLlama top-level protocol TVL; component methodology not supplied · Source ↗. Last sample 2026-11-08T03:54:59Z. A chart of rolling values is not a sum of daily trading.
RAW OBSERVATIONS
Open interest
Daily point-in-time snapshots
$8.84M
48 dated points · fetch sample · Chart scale starts near the series minimum, not zero. Gaps and marked breaks are not joined.Source and scope
DefiLlama open-interest overview, defillamaId 4932 slug 'ostium'; total24h only; no per-protocol timestamp supplied · Source ↗. Last sample 2026-11-08T05:00:58Z. A chart of rolling values is not a sum of daily trading.
RAW OBSERVATIONS
Fees · trailing 30d
Daily snapshots of a rolling 30d total
$54.65K
48 dated points · fetch sample · Chart scale starts near the series minimum, not zero. Gaps and marked breaks are not joined.low baseSource and scope
DefiLlama fees overview (dataType=dailyFees), defillamaId 4932 slug 'ostium', total30d · Source ↗. Last sample 2026-11-08T05:00:58Z. A chart of rolling values is not a sum of daily trading.
RAW OBSERVATIONS
Revenue · trailing 30d
Daily snapshots of a rolling 30d total
$19.51K
48 dated points · fetch sample · Chart scale starts near the series minimum, not zero. Gaps and marked breaks are not joined.Source and scope
DefiLlama fees overview (dataType=dailyRevenue), defillamaId 4932 slug 'ostium', total30d · Source ↗. Last sample 2026-11-08T05:00:59Z. A chart of rolling values is not a sum of daily trading.
TOKEN MECHANISM / VERIFICATION
Follow the money
Documented: No verified token-holder distribution model is included in this edition.
Execution: A stated rule, a reported purchase and a completed burn or distribution are distinct evidence steps. This profile does not add them as separate holder benefits.
Documentation pending · Scope and timing must be reconciled with observed transactions.
SUPPLY / DILUTION EVIDENCE
Supply and unlocks
Circulating supply is labelled by source convention. Vesting is not selling.
No verified live token is on file. Market supply figures are not expected; any announced token terms remain separate from a traded token.
Market cap
—
No comparable observation
Observed FDV
—
No comparable observation
Circulating supply
—
No comparable observation
Total supply
—
No comparable observation
Unlocks and supply
The documentation reviewed does not establish a live protocol token or a verified unlock calendar. No token-price scenario is published.
Unknown stays unknown; a missing figure is never shown as zero. This list is built from the figures and documented fields on this page; other limits are described in the sections around it and in the methodology.
Figures
Source time unknownVenue volume · 24h, Volume · 30d, Open interest, User fees · 30d, Protocol revenue · 30d
Stale source dataUser fees · 90d, Protocol revenue · 90d
Documentation and terms
ListingsSource pending
TokenNo verified live token on file; token market figures are not expected here
EVIDENCE BOUNDARY
What these numbers establish
Trading activity, fees and token-related flows use different sources and product scopes. One observation does not prove sustained growth; a fee-allocation rule is not proof of execution. Parent and child streams must not be added. Unknown values remain unknown, never zero.
Price and FDV above are market observations, not our estimate of what the token should cost.
Only a dated manual snapshot (2026-09-22) exists; current figures are in the market-position section.
TVL
$2.27M
Observed 08 Nov 2026 · 03:54 UTC
Source and scope
DefiLlama top-level protocol TVL; component methodology not supplied · Open source ↗
User fees · 90d
$980.57K
Stale source data · observed 06 Nov 2026 · 00:00 UTC; checked 07 Nov 2026 · 14:02 UTC
Source and scope
DefiLlama fees overview (dataType=dailyFees), defillamaId 4932 slug 'ostium', sum of 90 complete UTC daily values; provider chart reconciled to reported total30d · Open source ↗
Stale source data · observed 06 Nov 2026 · 00:00 UTC; checked 07 Nov 2026 · 14:02 UTC
Source and scope
DefiLlama fees overview (dataType=dailyRevenue), defillamaId 4932 slug 'ostium', sum of 90 complete UTC daily values; provider chart reconciled to reported total30d · Open source ↗
Attributed holder flow · 90d
—
No comparable observation
Project context
Source review: 2026-09-22
Team
Ostium's company release names Kaledora Kiernan-Linn as co-founder and CEO, and describes Kaledora and Marco as Harvard classmates. This edition does not assign a subjective team score or infer further biographies.
Ostium reported a $20 million Series A led by General Catalyst and Jump Crypto. The announcement also describes a preceding $4 million strategic round, bringing total capital raised to $27.8 million. These are company financing amounts, not a protocol-token valuation.
Ostium’s product thesis is access to traditional-market price exposure through blockchain-based collateral.
Read full explanationClose explanation↗
Choose a protocol overview or a detailed introduction to the trading concepts behind it.
Ostium overview
Ostium’s product thesis is access to traditional-market price exposure through blockchain-based collateral. Its focus makes reference pricing, market calendars, collateral liquidity and the handling of sharp price gaps central to the analysis.
Product adoption, company financing and a potential protocol token are separate subjects. This edition evaluates documented platform activity without assigning a token price where a live protocol token has not been verified.
What it does
A trading platform focused on price exposure to stocks, currencies, metals and other markets, with trades settled on Arbitrum and directional exposure hedged offchain.
A simple example
An oil position follows a quoted oil price; it does not give you barrels of oil. The trade's result depends on the oracle, leverage and settlement rules.
What the token means
No live Ostium platform token has been verified for this edition. OLP does exist, but it is a share of the USDC liquidity-provider vault, not a protocol governance token. Points are neither of those.
Where the money comes from
Traders pay opening fees. Ostium says 30% currently flows to the OLP vault; that allocation can change. Company fundraising is separate from trading fees and vault earnings.
What to watch out for
Market closures, oracle prices, offchain hedging, smart contracts and withdrawal timing all matter. The OLP vault has a junior loss buffer but deposits are not insured.
Ostium explained, step by step
What you are actually trading
On Ostium, a position linked to oil or a currency pair is a contract whose result follows a reference price under the platform’s rules. It does not give you delivery of oil or ownership of a conventional brokerage asset. You supply collateral to support that contract.
This difference matters because the real-world reference market and the blockchain can follow different schedules. A blockchain being available on a weekend does not mean the underlying market is continuously producing executable prices.
A position, collateral and leverage
A position is an open trade whose value changes with a market. A long benefits from a price rise; a short benefits from a fall, before costs. Collateral is the money supporting the trade. It is different from the position’s notional value, which is the amount of market exposure.
Leverage expresses the relationship between exposure and collateral. It magnifies both gains and losses relative to the money supporting the position. A perpetual generally has no scheduled expiry, but this does not mean you can hold it indefinitely: ongoing costs, liquidation and the venue’s market rules still apply.
Follow one hypothetical trade from entry to exit
Imagine a dollar-settled, linear contract with $100 of collateral and $500 of exposure: 5× leverage. Suppose the reference asset costs $100 when a long position opens. The position represents five units. If you later close all five at $102, the gross gain is 5 × $2 = $10. If you close at $98 instead, the gross loss is $10. A 2% market move therefore changes the original collateral by 10%, before costs.
Now assume an illustrative 0.05% trading fee on each side. Entry costs $0.25; the profitable exit at a $510 position value costs $0.255. The $10 gross gain becomes $9.495 before funding, spread, slippage and network costs. These numbers teach the arithmetic; they are not this platform’s fee schedule or a suggested trade.
While the position remains open, the displayed profit or loss is unrealized and can change. Closing it realizes the trading result. A profitable price move can still produce a disappointing net result if the cost of entering, holding and exiting is high.
Why a position can close before you choose to exit
A venue requires a minimum amount of remaining equity to support a position. If equity falls below that maintenance requirement, liquidation can close the position automatically. This can happen before your collateral reaches zero. The price used for this test may differ from the last trade shown on a chart.
Where available, isolated margin separates collateral for a position; cross margin can share it across positions. A loss in one cross-margined trade can affect the rest of the account. Exact boundaries and liquidation rules differ by venue. A stop order is also different from liquidation: its execution and final price depend on its order type, available liquidity and market conditions.
The platform and its token are different decisions
No live Ostium platform token has been verified for this edition. OLP does exist, but it is a share of the USDC liquidity-provider vault, not a protocol governance token. Points are neither of those.
A points program, if offered, is governed by its own terms. It is not automatically a liquid token or a claim on the company. No verified live protocol token is assumed in this edition.
The costs that do not fit into the headline fee
The spread is the gap between quoted buying and selling prices. Slippage is the difference between an expected execution price and the price actually obtained. A market order seeks immediate execution; a limit order sets an acceptable price but might never fill. A large position in a thin market can be expensive to close even when the displayed trading fee is low.
Many perpetual markets also use funding: periodic transfers between long and short positions that help align the contract with its reference market. The paying side and rate can change. Other products use different financing or holding-cost mechanisms. Check the selected contract’s current rules, payment interval and full cost preview; do not assume the same formula applies everywhere.
How to use the research below
First identify the contract, accepted collateral, pricing method and exit conditions. Then distinguish product activity from token economics. Volume counts trading over a period; open interest measures positions still open at a point in time. Neither is the platform’s profit. Fees, protocol revenue and value reaching token holders describe different flows.
Our metrics and research below help compare those questions. Their timestamps and scope matter: a recently fetched value may not have a source observation time. The explanation here is a conceptual walkthrough, not evidence that we tested an account, a particular order or a withdrawal on your behalf.
What matters specifically on Ostium
Read how the chosen market handles sessions, closures, reopening gaps and reference prices. These rules can be more relevant to a particular trade than the platform’s aggregate volume.
Use the metrics below to assess the product over consistent periods. An investor funding round finances a business; it does not determine what a trader receives from a position.
Project facts: official documentation ↗. Trading concepts: margin, liquidation and funding explained in Hyperliquid’s documentation. These illustrate concepts; other venues have different rules. Reviewed 22 September 2026. The worked example is hypothetical.