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Ostium
DEXOpen Interest
$15.61mKey Metrics
Volume (30d)$100.25m
7d$26.42m
24h$735,917
All-time$6.249b
Turnover (30d)6.4x
Markets66
Reference Assets66
Asset Groups10
Share of DEX OI0.3%
Est. Fees (30d)$50,123
24h$367.96
All-time$3.12m
Est. Annual$609,829
Taker Fee4 bps
Markets
| Market | Open Interest | Volume | Price | Funding | Est. Fees | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Name | Asset Type | Access Model | Pair | Interval | ||||||||||||
| ostium:eur-usdEuro | Forex Perps | Permissionless | $4.34m | +1.47% | $343,577 | $2.79m | $10.71m | EUR-USDC | $1.11 | -0.05% | 0% | 0% | 1h | 200x | $171.79 | $5,356 |
| ostium:xau-usdGold | Commodity Perp | Permissionless | $2.29m | -0.64% | $27,406 | $952,400 | $4.74m | XAU-USD | $4,041 | -0.58% | 0% | 0% | 1h | 50x | $13.70 | $2,368 |
| ostium:spx-usdS&P 500 Index | Equity Perp | Permissionless | $1.86m | +0.06% | $5,211 | $18.75m | $25.69m | SPX-USD | $7,742 | +0.06% | 0% | 0% | 1h | 100x | $2.61 | $12,844 |
| ostium:usd-jpyJapanese Yen | Forex Perps | Permissionless | $1.65m | +0.23% | $599.58 | $57,962 | $8.66m | JPY-USDC | $158.23 | +0.23% | 0% | 0% | 1h | 100x | $0.30 | $4,332 |
| ostium:hg-usdCopper | Commodity Perp | Permissionless | $1.11m | -0.04% | $3,044 | $50,922 | $372,940 | HG-USD | $6.63 | -0.04% | 0% | 0% | 1h | 50x | $1.52 | $186.47 |
| ostium:gbp-usdBritish Pound | Forex Perps | Permissionless | $1.03m | -0.10% | $10.80 | $49,096 | $157,596 | GBP-USDC | $1.33 | -0.10% | 0% | 0% | 1h | 200x | $0.0054 | $78.80 |
| ostium:nvda-usdNVIDIA Corporation | Stock Perp | Permissionless | $866,574 | -0.73% | $0 | $0 | $222,496 | NVDA-USD | $217.30 | -0.73% | 0% | 0% | 1h | 100x | $0 | $111.25 |
| ostium:mu-usdMicron Technology, Inc. | Stock Perp | Permissionless | $326,740 | +4.20% | $0 | $1,290 | $270,035 | MU-USDC | $971.03 | +4.20% | 0% | 0% | 1h | 50x | $0 | $135.02 |
| ostium:tlt-usdiShares 20+ Year Treasury Bond ETF | Bond Perp | Permissionless | $324,853 | -0.51% | $0 | $0 | $964,279 | TLT-USDC | $81.25 | -0.51% | 0% | 0% | 1h | 75x | $0 | $482.14 |
| ostium:hyg-usdiShares iBoxx $ High Yield Corporate Bond ETF | Bond Perp | Permissionless | $296,546 | +0.17% | $0 | $0 | $133.31 | HYG-USDC | $77.62 | +0.17% | 0% | 0% | 1h | 100x | $0 | $0.067 |
| ostium:xag-usdSilver | Commodity Perp | Permissionless | $214,788 | -1.79% | $844.76 | $81,505 | $419,546 | XAG-USD | $53.54 | -1.79% | 0% | 0% | 1h | 25x | $0.42 | $209.77 |
| ostium:bb-usdBlackBerry Limited | Stock Perp | Permissionless | $209,274 | -2.41% | $0 | $0 | $80,088 | BB-USD | $9.32 | -2.41% | 0% | 0% | 1h | 50x | $0 | $40.04 |
| ostium:glxy-usdGalaxy Digital Inc. | Stock Perp | Permissionless | $172,693 | +9.07% | $0 | $0 | $2,129 | GLXY-USD | $18.28 | +9.07% | 0% | 0% | 1h | 30x | $0 | $1.06 |
| ostium:brent-usdCrude Oil (Brent) | Commodity Perp | Permissionless | $122,068 | +26.33% | $11,134 | $490,820 | $974,090 | BRENT-USD | $113.13 | +2.70% | 0% | 0% | 1h | 15x | $5.57 | $487.05 |
| ostium:cl-usdCrude Oil (WTI) | Commodity Perp | Permissionless | $102,191 | +25.81% | $12,195 | $62,255 | $235,314 | WTI-USD | $102.67 | +3.37% | 0% | 0% | 1h | 15x | $6.10 | $117.66 |
| ostium:aud-usdAustralian Dollar | Forex Perps | Permissionless | $100,625 | +0.00% | $10.80 | $6,035 | $138,234 | AUD-USDC | $0.70 | +0.00% | 0% | 0% | 1h | 100x | $0.0054 | $69.12 |
| ostium:goog-usdAlphabet Inc. | Stock Perp | Permissionless | $94,645 | +1.05% | $0 | $439.34 | $110,672 | GOOG-USD | $320.78 | +1.05% | 0% | 0% | 1h | 100x | $0 | $55.34 |
| ostium:ndx-usdNasdaq-100 Index | Equity Perp | Permissionless | $85,233 | -52.33% | $328,308 | $2.81m | $40.54m | NDX-USD | $29,706 | -0.02% | 0% | 0% | 1h | 75x | $164.15 | $20,268 |
| ostium:amzn-usdAmazon.com, Inc. | Stock Perp | Permissionless | $64,195 | -0.01% | $0 | $1,504 | $463,928 | AMZN-USD | $252.31 | -0.01% | 0% | 0% | 1h | 100x | $0 | $231.96 |
| ostium:crcl-usdCircle Internet Group, Inc. | Stock Perp | Permissionless | $52,413 | -0.71% | $0 | $2,105 | $95,114 | CRCL-USD | $79.78 | -0.71% | 0% | 0% | 1h | 30x | $0 | $47.56 |
| ostium:ura-usdGlobal X Uranium ETF | Commodity Perp | Permissionless | $44,484 | +0.22% | $0 | $502.33 | $3,298 | URA-USDC | $36.08 | +0.22% | 0% | 0% | 1h | 15x | $0 | $1.65 |
| ostium:avgo-usdBroadcom Inc. | Stock Perp | Permissionless | $39,856 | +1.02% | $0 | $498.75 | $301,490 | AVGO-USD | $346.12 | +1.02% | 0% | 0% | 1h | 50x | $0 | $150.75 |
| ostium:coin-usdCoinbase Global, Inc. | Stock Perp | Permissionless | $31,480 | -0.94% | $0 | $748.38 | $11,629 | COIN-USD | $158.64 | -0.94% | 0% | 0% | 1h | 50x | $0 | $5.81 |
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 200× 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 Taker Fee4 bps
Perp Funding Retention0%
Margin Settlement AssetsUSDC (Arbitrum)
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