Trading is live on Ostium as of 10:00 AM ET, reopening in stages.
At reopen, protective and reduce-only actions come first: closing positions, topping up collateral, updating or cancelling orders, and automated take-profits, stop-losses, and liquidations.
Opening new positions follows shortly after, once pending orders have cleared. A further update will confirm when full trading is live.
The system executes only on live prices. No position can be filled or liquidated at a price from before the pause.
More updates will come. Trust only official Ostium channels.
Trading on Ostium reopens Thursday, July 23 at 10:00am ET.
Below covers what happens to open positions, how trading comes back online, and a recovery plan update for liquidity providers.
What happens to positions at reopen
Open positions and pending orders will carry over as they are. Traders do not need to do anything in advance.
When trading resumes, positions will be marked to the live market price at that moment. Only the live market price when trading resumes matters, not the price movements during the pause. A position will be liquidated only if it is below its liquidation level at that reopening price. Any take-profit, stop-loss, or limit order whose level has been reached at time of live market prices at 10:00 AM ET on July 23, 2026 will execute then. Traders have 24 hours before reopen to prepare to manage their positions.
How reopening will roll out
To help bring the protocol back safely, we will enable actions in stages. At reopen, protective and reduce-only actions will come first: closing positions, topping up collateral, updating/cancelling orders, automated take-profits, stop-losses, and liquidations.
Opening new positions follows shortly after, once pending orders have cleared. We will update when full trading is live.
For liquidity providers
New OLP deposits are paused. This is designed to ensure existing LPs who remain continue to earn a share of protocol revenue on a smaller capital base. Withdrawals will process at the next settlement.
We will provide additional details regarding the recovery in a follow-on post, including the structure and allocation of the capital commitment.
For your safety
Please remain vigilant and know we are not circulating any recovery forms, and will never ask for your private keys, seed phrase, or funds. There are currently illegitimate accounts attempting to impersonate the company and official team accounts.
We will post when trading is live. Trust only official Ostium channels. Updates will be posted here, on our Telegram announcements channel, and on the app.
Status Update: The forensic investigation remains ongoing. We are working closely with law enforcement and leading cybersecurity experts. Our team of experts continues to trace funds and actively coordinate with exchanges, bridges, and stablecoin issuers.
The trading contracts were and remain frozen to contain the incident. Public communications will be shared with a minimum of 24 hours notice prior to any unfreezing of smart contracts. At present, positions remain open. When trading resumes, traders will again be able to manage or close them.
We will share updates as we are able to responsibly over the coming days, including a technical post-mortem and outline of the path forward towards protocol restoration.
Please trust only official channels. We are not circulating recovery forms and will never ask for your keys, seed phrase, or funds.
The support we have received over the past 36 hours has been extraordinary. To the partners, friends, security experts, and industry peers who have helped us in this: thank you. More to come.
This morning, between 14:18–14:23 UTC, Ostium experienced a security issue leading to a loss of funds from the public OLP vault. Our team identified the issue within minutes and immediately began taking steps to contain it, including coordinating to pause trading contracts within the hour. We are working closely with relevant law enforcement authorities, SEAL 911, and third-party cybersecurity experts.
No founder ever wants to deliver an update like this. We recognize the responsibility that comes with building infrastructure that people choose to use and trust. We take that responsibility seriously, and our focus is on resolution and responding with transparency and accuracy.
To the stablecoin issuers, bridges, protocols, and security partners who have moved quickly to assist us: thank you for your continued support.
We will continue to provide updates as they arise.
June CPI about to go live. Then Warsh testifies at 10 AM ET.
Going in: BRENT 99.8% long. US100 99.9% long. US500 68.2% short.
Trade macro with size on Ostium.
Fun fact: @Ostium uses licensed @Nasdaq market data feeds to power its perpetual futures contracts for individual U.S. stocks
This provides institutional-grade pricing accuracy, tight spreads, and real-time bid/ask data for over 50 tradable traditional markets, including single-name stocks (e.g., NVDA, MSFT, TSLA) and ETF products.
Superior data feeds, ready for mass adoption.
every new perp DEX that launches a CLOB is actually bullish for Ostium.
more CLOBs = more fragmented liquidity = thinner books = worse fills for traders
Ostium doesn't fragment, it connects to real-market liquidity. So, the more they fragment, the more Ostium shines
that's the flywheel.
...and now my watch is ended.
Cashed out of my $BB long bc funding remains too expensive for HTF trading on @HyperliquidX. I remain signficantly short $BTC and will hold this until fundamentals change of 50k cometh.
I will be moving my $BB 1x long to @Ostium. I have zero affiliation but @FlowTraderTM is a good friend and RFQ pricing means I can get 4% APR flat rate funding in size. $BB is a long term, multi year trade for me.
JUST IN:
@Ostium just posted its strongest quarter: $7.45M in revenue, and Q2 isn't over yet.
Revenue is up ~120x since Q1 2025, making them one of the fastest growing apps by revenue.
Built on Arbitrum.
Made for the programmable economy.
1) traders found the deepest liquidity on RWAs onchain.
2) LPs found the vault sitting right behind it earning from the flow.
both sides of the same story.
both early.
@Robsvr@risextrade@Ostium@paradex retailers are getting access to the same execution quality that institutions have had for decades. that's the whole story.
+22%
Ostium is building the broker layer for global markets onchain.
Most onchain perp DEXs run order books. This works for crypto which has deep liquidity onchain, but falls apart for RWAs where the deepest liquidity live offchain. Books stay thin and traders pay the price in slippage and wicks.
On 10/10, PAXG perps on Hyperliquid wicked more than 20% while spot gold barely moved. Traders holding long gold faced liquidation risk on a session where gold itself was flat. The same pattern showed up on Lighter where SKHYNIX wicked 22% while the Korean equity market was closed.
Ostium took a different path by pricing trades from the underlying markets directly. Institutional partners like Jump hedge the resulting exposure offchain.
The hedges go into the same venues where these assets clear trillions a day. The same $1M NVDA position that costs ~60 bps on Hyperliquid costs around 9 bps on Ostium.
The roadmap is a full RFQ network where designated liquidity providers compete on every trade in real time.