Share this article

CFTC Investigating Ether Crash on Coinbase Exchange

The U.S. Commodity Futures Trading Commission is reportedly making enquiries into the June "flash crash" on Coinbase's GDAX trading platform.

Updated Sep 13, 2021, 6:59 a.m. Published Oct 3, 2017, 10:30 a.m.
trading chart crash

The U.S. Commodity Futures Trading Commission (CFTC) is reportedly making enquiries into the ether flash crash that occurred earlier this year on Coinbase's GDAX trading platform.

The flash crash, which occurred on June 21, saw the price per dollar of the ethereum token plummet from $365.79 to 10 cents, before quickly recovering.

STORY CONTINUES BELOW
Don't miss another story.Subscribe to the Crypto Daybook Americas Newsletter today. See all newsletters

According to sources speaking to Bloomberg, the CFTC is specifically looking into what role margin trading may have had in the sudden crash, as Coinbase had allowed traders to borrow money from the platform to make larger trades.

Coinbase began offering margin trading services in March and suspended them following the flash crash. As stipulated on its website, in order to be legally eligible for margin trading, participants had to conform to one of several conditions – for example, holding over $10 million in assets elsewhere.

Sources told Bloomberg that the CFTC sent San Francisco-based Coinbase a letter questioning its margin trading practices, among other enquiries.

Coinbase told Bloomberg:

"As a regulated financial institution, Coinbase complies with regulations and fully cooperates with regulators. After the GDAX market event in June 2017, we proactively reached out to a number of regulators, including the CFTC. We also decided to credit all customers who were impacted by this event. We are unaware of a formal investigation."

While Coinbase is not registered with the CTFC, it holds licenses with a number of regulators across different U.S. states.

General manager of Coinbase's GDAX market Adam White told Bloomberg at the time of the flash crash that it was prompted by a trader selling $12.5 million-worth of ether, causing others to panic sell in what White called "a rapid, cascading event."

The crash was over almost as soon as it had started, with ether's price back to around $300 within 10 seconds. However, the fall triggered a margin call, liquidating positions held by leveraged traders. GDAX later moved to issue refunds to those who had lost funds in the event.

Last year, the CTFC sanctioned another cryptocurrency exchange, Bitfinex, for not respecting margin trading laws, among other infringements.

Disclosure: CoinDesk is a subsidiary of Digital Currency Group, which has an ownership stake in Coinbase.

Stock market image via Shutterstock

More For You

Protocol Research: GoPlus Security

GP Basic Image

What to know:

  • As of October 2025, GoPlus has generated $4.7M in total revenue across its product lines. The GoPlus App is the primary revenue driver, contributing $2.5M (approx. 53%), followed by the SafeToken Protocol at $1.7M.
  • GoPlus Intelligence's Token Security API averaged 717 million monthly calls year-to-date in 2025 , with a peak of nearly 1 billion calls in February 2025. Total blockchain-level requests, including transaction simulations, averaged an additional 350 million per month.
  • Since its January 2025 launch , the $GPS token has registered over $5B in total spot volume and $10B in derivatives volume in 2025. Monthly spot volume peaked in March 2025 at over $1.1B , while derivatives volume peaked the same month at over $4B.

More For You

How Much Longer Until We Consider the Bitcoin Power Law Model Invalid?

Power Law (Glassnode)

As the gap between spot bitcoin price and the power law widens, investors are left questioning whether mean reversion is coming or if another cornerstone model is approaching its end.

What to know:

  • Bitcoin has largely tracked its long standing power law trend this cycle, though it now trades about 32% below the model.
  • Earlier models like stock to flow have already failed, with its current implied valuation near $1.3 million per bitcoin