Ask about Ostium · freeTotal Value Locked$3.48m
TVL by Chain
Arbitrum$3.48m
Key Metrics
Fees 30d$124,530
Fees 30d by chain
Arbitrum$138,478
Fees 7d$12,365
Arbitrum$12,365
Fees 24h$3,494
Arbitrum$3,494
Cumulative Fees$44.74m
Arbitrum$44.8m
Revenue 30d$20,325
Revenue 30d by chain
Arbitrum$20,325
Revenue 7d$4,136
Arbitrum$4,136
Revenue 24h$938
Arbitrum$938
Cumulative Revenue$20.51m
Arbitrum$20.51m
Perp Volume 30d$122.87m
Perp Volume 30d by chain
Arbitrum$122.87m
Perp Volume 7d$20.65m
Arbitrum$20.65m
Perp Volume 24h$7.22m
Arbitrum$7.22m
Cumulative Perp Volume$61.818b
Arbitrum$61.818b
Open Interest$7.64m
Total Raised$27.5m
Oct 6, 2023$3.5mRound: SeedInvestors: General Catalyst, LocalGlobe, SIG, Balaji Srinivasan, AllianceDAO
Dec 3, 2025$20mRound: Series AInvestors: General Catalyst, Jump Trading, Coinbase Ventures, Wintermute Ventures, GSR
Dec 3, 2025$4mRound: Strategic
Protocol Information
Trade FX, metals, energy, & RWAs from your wallet
Audits:
Methodology
TVL: Total value of all coins held in the smart contracts of the protocolView code on GitHubFees: Gross protocol revenue: opening fees, liquidation fees, oracle fees, dev fees, rollover fees, and trading spreads.View code on GitHubRevenue: 100% of dev opening fees, 100% of oracle fees, and 100% of trading spreads from 2026-04-28 onwards.View code on GitHubPerp Volume: Notional volume of all trades including leverage on the perp exchangeView code on GitHubHacks
Date: Jul 15, 2026
Amount: $23.75m
Classification: Key Compromise
Technique: Private Key Compromised
On July 15, 2026, Ostium perpetuals DEX on Arbitrum suffered a $23.75M exploit when an attacker used a compromised price oracle private key to sign fraudulent Bitcoin price reports ($5,000 vs. real ~$60,000), opening positions at fake prices and closing at market rates.
Chains: Arbitrum
Language: Solidity
Target Type: DeFi Protocol
Competitors
Ostium history
TVL is the default DefiLlama definition. Daily values are UTC snapshots from Jul 27, 2024 to Oct 31, 2026.
All-time high TVL: $100.65m on Mar 17, 2026. All-time low TVL: $247,036 on Jul 27, 2024.
Daily TVL, Oct 2, 2026 to Oct 31, 2026
| Date | TVL |
|---|---|
| Oct 2, 2026 | $8.63m |
| Oct 3, 2026 | $8.61m |
| Oct 4, 2026 | $7.68m |
| Oct 5, 2026 | $7.67m |
| Oct 6, 2026 | $7.56m |
| Oct 7, 2026 | $5.23m |
| Oct 8, 2026 | $5.03m |
| Oct 9, 2026 | $4.91m |
| Oct 10, 2026 | $4.29m |
| Oct 11, 2026 | $4.28m |
| Oct 12, 2026 | $4.27m |
| Oct 13, 2026 | $4.25m |
| Oct 14, 2026 | $4.29m |
| Oct 15, 2026 | $4.25m |
| Oct 16, 2026 | $4.19m |
| Oct 17, 2026 | $4.17m |
| Oct 18, 2026 | $4.16m |
| Oct 19, 2026 | $4.13m |
| Oct 20, 2026 | $4.09m |
| Oct 21, 2026 | $3.95m |
| Oct 22, 2026 | $3.95m |
| Oct 23, 2026 | $3.93m |
| Oct 24, 2026 | $3.63m |
| Oct 25, 2026 | $3.62m |
| Oct 26, 2026 | $3.62m |
| Oct 27, 2026 | $3.66m |
| Oct 28, 2026 | $3.64m |
| Oct 29, 2026 | $3.62m |
| Oct 30, 2026 | $3.61m |
| Oct 31, 2026 | $3.48m |
TVL at each month end, Nov 2024 to Oct 2026
| Date | TVL |
|---|---|
| Nov 30, 2024 | $1.58m |
| Dec 31, 2024 | $2.23m |
| Jan 31, 2025 | $5.3m |
| Feb 28, 2025 | $5.1m |
| Mar 31, 2025 | $5.56m |
| Apr 30, 2025 | $64.35m |
| May 31, 2025 | $62.08m |
| Jun 30, 2025 | $62.79m |
| Jul 31, 2025 | $53.78m |
| Aug 31, 2025 | $45.35m |
| Sep 30, 2025 | $40.51m |
| Oct 31, 2025 | $58.84m |
| Nov 30, 2025 | $46.75m |
| Dec 31, 2025 | $57.43m |
| Jan 31, 2026 | $94.51m |
| Feb 28, 2026 | $85.15m |
| Mar 31, 2026 | $81.02m |
| Apr 30, 2026 | $50.12m |
| May 31, 2026 | $46m |
| Jun 30, 2026 | $58.13m |
| Jul 31, 2026 | $17.85m |
| Aug 31, 2026 | $16.39m |
| Sep 30, 2026 | $8.8m |
| Oct 31, 2026 | $3.48m |
TVL at each year end, Dec 31, 2024 to Dec 31, 2025
| Date | TVL |
|---|---|
| Dec 31, 2024 | $2.23m |
| Dec 31, 2025 | $57.43m |
Fees and revenue by UTC calendar month, Nov 2024 to Oct 2026
| Month | Fees | Revenue |
|---|---|---|
| Nov 2024 | $22,682 | $12,400 |
| Dec 2024 | $38,967 | $30,105 |
| Jan 2025 | $23,888 | $11,142 |
| Feb 2025 | $57,952 | $34,017 |
| Mar 2025 | $26,409 | $13,186 |
| Apr 2025 | $1.81m | $802,205 |
| May 2025 | $1.65m | $534,726 |
| Jun 2025 | $1.76m | $699,687 |
| Jul 2025 | $2.13m | $874,814 |
| Aug 2025 | $1.51m | $838,756 |
| Sep 2025 | $1.34m | $637,305 |
| Oct 2025 | $2.71m | $1.06m |
| Nov 2025 | $1.45m | $590,297 |
| Dec 2025 | $2.01m | $662,568 |
| Jan 2026 | $4.39m | $1.37m |
| Feb 2026 | $3.81m | $1.25m |
| Mar 2026 | $5.87m | $1.92m |
| Apr 2026 | $3.38m | $1.29m |
| May 2026 | $4.88m | $3.92m |
| Jun 2026 | $3.5m | $2.73m |
| Jul 2026 | $1.31m | $600,581 |
| Aug 2026 | $865,441 | $575,824 |
| Sep 2026 | $50,851 | $31,892 |
| Oct 2026 (to date) | $124,530 | $20,325 |
The .csv export on the chart above downloads every daily value. The same data is in the public API: https://api.llama.fi/protocol/ostium
Frequently asked questions
What is Ostium's TVL?
As of Oct 31, 2026, Ostium has $3.48m in total value locked. TVL has decreased 60.4% over the past 30 days.
What chains does Ostium operate on?
Ostium operates on Arbitrum. Arbitrum holds the largest share at 100%.
How much has Ostium generated in fees and revenue?
Over the past 30 days, Ostium generated $124,530 in fees. Of that, $20,325 was protocol revenue. Based on the trailing year, the annualized rate is $31.68m in fees and $14.97m in revenue.
How does Ostium's TVL compare to similar protocols?
Among Derivatives protocols tracked by DefiLlama, Ostium ranks #33 by TVL. The category holds $1.912b across 421 protocols, and Ostium accounts for 0.2% of that total. Similar protocols include GMX EVM, AZverse Perps, Apex Omni, Aevo Perps, Contango V2, MUX Perps, Antarctic, Gains Network, Evedex, and AlphaX.
How much perpetual futures volume does Ostium process?
Ostium processed $122.87m in perpetual futures volume over the past 30 days.
Has Ostium ever been exploited?
Ostium has 1 recorded security incident. The most recent incident occurred on Jul 15, 2026 and involved $23.75m. It was classified as Key Compromise.