Ether Broke Below $300 as the ICO Economy Faced a Stress Test

Ether broke below $300 on August 13, 2018, establishing a new low for 2018 and putting the financing model around Ethereum-based token sales under fresh pressure. CoinDesk’s Ethereum Price Index recorded the break at 16:50 UTC and placed ether at $289.16 later in the session, 9.6% below its daily open.

Kraken’s exchange report for August 13 independently showed ether at $289.60, down 9.38%, with $42 million of ETH turnover. The same report put bitcoin at $6,284, down only 0.58%, on $74.9 million of BTC turnover. Those figures describe Kraken’s venue-wide daily snapshot across its supported crypto and fiat markets; the surviving report does not specify the precise cutoff time or how its displayed dollar price was aggregated, so it should not be read as a universal close.

A break with broader meaning

The $300 threshold was not a protocol event. Ethereum continued producing blocks, and the price move did not itself show a failure of consensus, smart contracts or settlement. Its importance was financial: ether was not merely a traded asset in 2018. It was also the common funding currency for many initial coin offerings and the native asset used to pay for computation on Ethereum.

That made a sharp fall capable of reaching beyond speculative portfolios. Token issuers that had raised ether faced a lower dollar value for any unsold treasury holdings, while projects with expenses denominated in fiat could feel pressure to convert more of those holdings. The claim that ICO treasury selling caused the decline was widely discussed on August 13, but the available contemporaneous sources did not establish a verified amount of issuer selling or prove causation. It remained a plausible feedback-loop interpretation, not a measured fact.

The relative move was nevertheless clear. Using Kraken’s reported daily changes, ether underperformed bitcoin by 8.80 percentage points on August 13. CoinDesk also reported 24-hour losses above 5% for EOS, bitcoin cash and cardano, and placed aggregate cryptocurrency capitalization just above $205 billion after a daily high of $219.4 billion. That aggregate came from CoinMarketCap and combined assets and venues with differing liquidity; it was an indicative market snapshot, not the value of a regulated consolidated tape.

What the data did—and did not—show

Two contemporaneous measurements converged closely: CoinDesk’s multi-venue index put ether at $289.16 after the break, while Kraken showed $289.60 in its daily report. Their decline estimates, 9.6% and 9.38%, also aligned despite different measurement methods. CoinDesk said the sub-$300 print was the first since November 12, 2017. Ars Technica separately described ether near $290 and down 9% over 24 hours, while bitcoin had lost about 1% in the same comparison.

The evidence therefore supports a market milestone: ether crossed a price level it had held throughout 2018 and fell much faster than bitcoin during the measured window. It does not support a single-cause explanation, a global closing price, or a claim that every exchange printed the same low. Cryptocurrency markets traded continuously, venue prices differed, and contemporaneous reports used different snapshots.

For August 13, the institutional signal was the widening gap between Ethereum’s continuing utility as a token-issuance and smart-contract platform and the deteriorating market value of its native asset. The break below $300 made treasury management, funding durability and liquidity—not only protocol ambition—central questions for the Ethereum economy.