CoinDesk
A trader on Ostium has held a $1.14 million long position in EUR/USD perpetual futures for 400 days, applying a bitcoin-style HODLing strategy to a fully onchain forex position. Ostium disclosed the position on Tuesday, noting the bullish bet was opened in early June 2025 expecting euro strength against the dollar. EUR/USD sat above 1.14 at the time of writing, largely unchanged from where it started, though the pair climbed as high as 1.2082 in January.
Why it matters
The trade is notable less for its size than for its duration. Ostium and similar platforms such as Gains Network, Synthetix, and GMX use onchain perpetual contracts to give traders leveraged exposure to traditional assets, and a 400-day hold suggests a user is comfortable pricing rollover costs against a multi-quarter directional view. Ostium's FX perps use volatility-based rollover fees modeled on traditional forex swap mechanics rather than the funding rates common in crypto perps, which keeps holding costs around 2.3% annually and far more predictable.
Market impact
The structural read is that conviction trades, once the domain of spot Bitcoin wallets, are starting to migrate to onchain FX rails. The scale is still tiny: onchain FX remains a sliver of the more than $9 trillion-a-day global FX market. But the existence of a leveraged 400-day hold on a major pair illustrates that the rails now support long-duration, traditional-asset positioning, a use case that was effectively impossible on DEXs two years ago.
Frequently asked questions
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What is the Ostium EUR/USD HODL trade?
A trader on the decentralized exchange Ostium held a $1.14 million long position in EUR/USD perpetual futures for 400 days, applying a bitcoin-style long-term hold to a leveraged forex trade.
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How much does it cost to hold an Ostium FX perpetual?
Ostium uses volatility-based rollover fees modeled on traditional forex swap mechanics, which keep the annual holding cost at approximately 2.3%, a more stable and predictable figure than typical crypto funding rates.
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Is onchain forex trading large?
No. Platforms such as Ostium, Gains Network, Synthetix, and GMX still represent a tiny share of global FX activity, while the traditional FX market handles more than $9 trillion in daily volume.
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When was the EUR/USD position opened?
Ostium disclosed the trade on Tuesday, with the long position opened in early June 2025 betting on euro strength against the US dollar.
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Where was EUR/USD trading at disclosure?
EUR/USD traded above 1.14 at the time of writing, largely unchanged from where it sat in June 2025, though the pair had risen as high as 1.2082 in January before retracing.
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