Deribit Holds 96.6% of Coinbase Derivatives Open Interest Ahead of September 9 Migration

A Coinbase derivatives dashboard snapshot taken at 15:42 UTC on September 1 recorded $40.65 billion of daily open interest across three venues. Deribit, the offshore venue, held $39.26 billion (96.6% of the total), Coinbase Derivatives held $1.17 billion (2.9%), and the International Exchange held $226.98 million (0.6%).

September 9 Migration Details

On September 9, Coinbase plans to transfer the International Exchange book, client accounts, and trading infrastructure to Deribit. The migration will affect less than 1% of the displayed open interest but is operationally significant. Coinbase expects about 30 minutes of downtime.

Process for Institutional Clients

• All open International Exchange orders will be canceled.
• Positions will be settled at the mark price, with profit and loss crystallized and funding paid.
• Resulting balances will be transferred and positions recreated on Deribit at the same settlement price via matched migration trades.

Changes to Settlement and Funding Mechanics

• International Exchange settled perpetual contracts every five minutes; Deribit settles once daily at 08:00 UTC.
• International Exchange applied hourly funding without a rate clamp; Deribit accrues funding continuously, quotes an eight‑hour rate, and damps funding to zero when the mark price is within 0.025 % of the index.
• Deribit caps the eight‑hour rate at 0.5 % for BTC, 1 % for ETH, and 5 % for USDC‑ and USDT‑related contracts.

API and Custody Implications

• International Exchange API endpoints will cease after September 9; clients must obtain new Deribit credentials for REST, WebSocket, FIX, or SBE connections.
• Historical order and trade data from International Exchange will be retained for approximately 12 months.
• Institutions with only an International Exchange account will have Coinbase Bermuda Limited act as broker and custodian, routing orders to Deribit for execution.

Regulatory Context

CFTC staff issued a conditional no‑action letter on May 29, allowing Coinbase Financial Markets to post eligible customer‑owned digital commodities and stablecoins through Coinbase Bermuda to Deribit for foreign‑futures and foreign‑options margin, subject to nine conditions including ownership, risk controls, and disclosure requirements.

Key Takeaways

• Deribit already dominates Coinbase’s displayed derivatives open interest, holding 96.6% as of September 1.
• The September 9 migration will move a small International Exchange book to Deribit, causing a brief service interruption and new API requirements.
• Institutional traders will experience changes in settlement frequency, funding calculations, and counter‑party arrangements.
• Regulatory approvals and client readiness may affect the exact migration timeline.