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Ostium
DEXOpen Interest
$7.09mKey Metrics
Volume (30d)$98.32m
7d$28.22m
24h$2.84m
All-time$38.554b
Turnover (30d)13.9x
Markets66
Reference Assets66
Asset Groups11
Share of DEX OI0.2%
Est. Fees (30d)$12,553
24h$345.03
All-time$8.45m
Est. Annual$152,733
Taker Fee6 bps
Markets
| Market | Open Interest | Volume | Price | Funding | Est. Fees | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Name | Asset Type | Access Model | Pair | Interval | ||||||||||||
| ostium:eur-usdEuro | Forex Perps | Permissionless | $2.29m | +0.45% | $54,730 | $490,694 | $8.01m | EUR-USDC | $1.12 | -0.42% | 0% | 0% | 8h | 200x | $10.95 | $1,602 |
| ostium:xau-usdGold | Commodity Perp | Permissionless | $1.18m | -0.14% | $144,346 | $727,237 | $3.47m | XAU-USD | $4,079 | -0.23% | 0% | 0% | 8h | 50x | $28.87 | $694.20 |
| ostium:spx-usdS&P 500 Index | Equity Perp | Permissionless | $821,491 | +2.16% | $1.81m | $18.42m | $42.45m | SPX-USD | $7,364 | +0.70% | 0% | 0% | 8h | 100x | $181.34 | $4,245 |
| ostium:hg-usdCopper | Commodity Perp | Permissionless | $526,253 | -0.01% | $210.80 | $50,316 | $172,206 | HG-USD | $6.20 | 0% | 0% | 0% | 8h | 50x | $0.063 | $51.66 |
| ostium:brent-usdCrude Oil (Brent) | Commodity Perp | Permissionless | $473,162 | -0.01% | $10.80 | $442,310 | $1.43m | BRENT-USD | $98.03 | 0% | 0% | 0% | 8h | 15x | $0.0032 | $427.93 |
| ostium:nvda-usdNVIDIA Corporation | Stock Perp | Permissionless | $373,712 | -0.01% | $13,774 | $138,193 | $223,552 | NVDA-USD | $181.76 | 0% | 0% | 0% | 8h | 100x | $4.13 | $67.07 |
| ostium:gbp-usdBritish Pound | Forex Perps | Permissionless | $373,389 | -0.15% | $212.10 | $63,098 | $294,308 | GBP-USDC | $1.34 | -0.19% | 0% | 0% | 8h | 200x | $0.042 | $58.86 |
| ostium:tlt-usdiShares 20+ Year Treasury Bond ETF | Bond Perp | Permissionless | $172,228 | -0.01% | $10.80 | $65.80 | $7,397 | TLT-USDC | $81.99 | 0% | 0% | 0% | 8h | 75x | $0.0032 | $2.22 |
| ostium:hyg-usdiShares iBoxx $ High Yield Corporate Bond ETF | Bond Perp | Permissionless | $147,950 | -0.01% | $10.80 | $43.80 | $120.80 | HYG-USDC | $77.34 | 0% | 0% | 0% | 8h | 100x | $0.0032 | $0.036 |
| ostium:mu-usdMicron Technology, Inc. | Stock Perp | Permissionless | $125,197 | -0.01% | $32,342 | $83,708 | $101,900 | MU-USDC | $653.98 | 0% | 0% | 0% | 8h | 50x | $9.70 | $30.57 |
| ostium:xag-usdSilver | Commodity Perp | Permissionless | $98,841 | -1.06% | $1,043 | $86,434 | $328,775 | XAG-USD | $51.33 | -1.23% | 0% | 0% | 8h | 25x | $0.31 | $98.63 |
| ostium:ndx-usdNasdaq-100 Index | Equity Perp | Permissionless | $83,818 | -4.87% | $567,878 | $5.74m | $32.66m | NDX-USD | $27,089 | +2.61% | 0% | 0% | 8h | 75x | $56.79 | $3,266 |
| ostium:bb-usdBlackBerry Limited | Stock Perp | Permissionless | $66,816 | -0.01% | $10.80 | $30,055 | $130,002 | BB-USD | $8.39 | 0% | 0% | 0% | 8h | 50x | $0.0032 | $39 |
| ostium:glxy-usdGalaxy Digital Inc. | Stock Perp | Permissionless | $61,276 | -0.01% | $32.57 | $109.58 | $373.58 | GLXY-USD | $12.96 | 0% | 0% | 0% | 8h | 30x | $0.0098 | $0.11 |
| ostium:xpt-usdPlatinum | Commodity Perp | Permissionless | $42,950 | -0.20% | $3,923 | $75,176 | $111,343 | XPT-USDC | $1,513 | -0.19% | 0% | 0% | 8h | 50x | $1.96 | $55.67 |
| ostium:amzn-usdAmazon.com, Inc. | Stock Perp | Permissionless | $34,851 | -0.01% | $1,090 | $34,040 | $515,469 | AMZN-USD | $260.06 | 0% | 0% | 0% | 8h | 100x | $0.33 | $154.64 |
| ostium:sndk-usdSandisk Corporation | Stock Perp | Permissionless | $21,986 | -0.01% | $50,502 | $101,678 | $209,675 | SNDK-USDC | $810.21 | 0% | 0% | 0% | 8h | 50x | $15.15 | $62.90 |
| ostium:crcl-usdCircle Internet Group, Inc. | Stock Perp | Permissionless | $20,897 | -0.01% | $3,082 | $8,863 | $95,716 | CRCL-USD | $69.43 | 0% | 0% | 0% | 8h | 30x | $0.92 | $28.71 |
| ostium:cl-usdCrude Oil (WTI) | Commodity Perp | Permissionless | $20,875 | +9.93% | $8,585 | $43,471 | $242,305 | WTI-USD | $89.02 | -1.27% | 0% | 0% | 8h | 15x | $2.58 | $72.69 |
| ostium:ura-usdGlobal X Uranium ETF | Commodity Perp | Permissionless | $20,362 | -0.01% | $2,197 | $5,172 | $8,490 | URA-USDC | $30.98 | 0% | 0% | 0% | 8h | 15x | $0.66 | $2.55 |
| ostium:goog-usdAlphabet Inc. Class C | Stock Perp | Permissionless | $19,630 | -0.01% | $1,258 | $40,775 | $174,850 | GOOG-USD | $281.32 | 0% | 0% | 0% | 8h | 100x | $0.38 | $52.46 |
| ostium:dax-eurDAX 40 Index | ETF Perp | Permissionless | $16,767 | +2.88% | $534.24 | $4,558 | $227,760 | DAX-USDC | $26,166 | -0.14% | 0% | 0% | 8h | 75x | $0.16 | $68.33 |
| ostium:ftse-gbpFTSE 100 Index | ETF Perp | Permissionless | $15,277 | -0.51% | $682.99 | $37,288 | $71,530 | FTSE100-USDC | $10,696 | 0% | 0% | 0% | 8h | 75x | $0.20 | $21.46 |
About Ostium
Ostium is a self-custodial perpetual venue on Arbitrum founded in 2022 by Harvard classmates Kaledora Kiernan-Linn (CEO, ex-Bridgewater quant and former Royal Danish Ballet dancer) and Marco Antonio Ribeiro (CTO, former Olympiad medalist). It provides perpetual exposure to stocks, commodities, FX, and indices with up to 200x leverage, using a quote-based RFQ pricing model that draws from off-chain liquidity venues rather than recreating fragmented on-chain order books. Pricing is sourced via Stork Network with QUODD institutional data; all positions are margined and cash-settled in USDC. Over 95% of open interest is concentrated in non-crypto RWAs (gold, silver, oil, S&P 500, Nasdaq, EUR/USD, JPY/USD, Tesla, Apple, Coinbase). Ostium has raised $24M total, including a $20M Series A led by General Catalyst and Jump Crypto in December 2025.
Entity
Legal entityOstium Labs, Inc.
Primary chainArbitrum
Registry
Ostium Labs, Inc. was founded in 2022 by Harvard alumni Kaledora Kiernan-Linn (CEO) and Marco Antonio Ribeiro (CTO), both formerly quantitative researchers at Bridgewater Associates. The company has raised $24M total, including a $20M Series A in December 2025 led by General Catalyst and Jump Crypto at a ~$250M valuation, and uses Stork Network with QUODD institutional market data for off-chain price feeds.
Markets
Open Interest by asset group
Asset classes
Fees & revenue
Revenue modelOpening Fee
ConfidenceIssuer-Disclosed
Perp Maker Fee6 bps
Perp Taker Fee6 bps
Perp Funding Retention0%
Margin Settlement AssetsUSDC
Fees Last Verified2026-05-11
Ostium charges a single FLAT opening fee on RWA markets - same rate regardless of maker/taker direction. Stocks, indices, and FX: 4 bps flat opening. Commodities: variable 8-20 bps per symbol based on volatility. NO closing fee on any market. Non-crypto pairs have rollover fees (instead of crypto-style funding) that reflect underlying market financing costs. Crypto markets (not displayed on this RWA page) use a separate 3/10 bps maker/taker schedule. Source: https://ostium-labs.gitbook.io/ostium-docs/fee-breakdown