Ethereum price breakout risks pullback with RSI at 86

Ethereum climbed about 3% to roughly $2,397 on Aug. 21, 2026, after opening at $2,327 and touching an intraday high near $2,448, according to crypto.news data. The move extended a breakout that had already carried ETH from below $2,000 to more than $2,300 within two sessions, clearing the $2,000 psychological barrier, the $2,250 resistance area and the $2,375 Murrey Math level on the 4-hour chart. The advance was attributed to US spot Ether ETF inflows, short liquidations and stronger risk appetite. The main caution flag: Ethereum's 14-day relative strength index jumped to 86.12, well above the 70 level commonly associated with overbought conditions.

Background

The sources describe a rally with several reinforcing drivers rather than a single cause. US spot Ether ETFs recorded $189 million in net inflows on Aug. 19, their strongest daily intake since October 2025, according to SoSoValue data, with BlackRock's ETHA accounting for about $122 million of that total. Those purchases arrived as Ethereum broke above $2,000, forcing traders with leveraged short positions to close their bets. CoinGlass data cited by Invezz showed more than $1 billion in Ether shorts were liquidated during the initial breakout, part of a wider crypto liquidation event that exceeded $3 billion. The supplied one-week CoinGlass heatmap shows ETH moving rapidly through liquidation clusters between $1,900 and $2,300. Macro conditions added another catalyst: the US Treasury announced it would at least double the maximum size of buybacks for longer-dated nominal securities from $2 billion to $4 billion per operation, beginning Sept. 9 and remaining in place through Nov. 4. Investors interpreted the announcement as support for bond-market liquidity, and Treasury yields and the US dollar subsequently weakened, helping Bitcoin, Ethereum and other risk assets extend gains. The sources also note the rally pushed ETH through levels that had limited gains since April.

What happened

According to crypto.news, Ethereum opened at $2,327 on Aug. 21 before climbing to $2,448 and settling near $2,397 at the time of writing, a 3% daily increase. That followed a much larger move that carried ETH from below $2,000 to more than $2,300 within two sessions, pushing through the $2,000 psychological barrier and the $2,250 resistance area, levels the source says had limited gains since April. ETH also cleared the $2,375 Murrey Math level on the 4-hour chart, although price was struggling to hold above it after a rejection near $2,450. Momentum on the shorter timeframe remained strong: the 4-hour Awesome Oscillator rose to 329.16 and printed an expanding series of green bars, which the source reads as upward momentum not yet meaningfully weakened. The daily chart told a different story. ETH was trading about 5.5% above the upper Bollinger Band at $2,272, while the indicator's middle band remained near $1,957. On flows, SoSoValue data cited by crypto.news showed US spot Ether ETFs took in $189 million net on Aug. 19, the strongest daily intake since October 2025, with BlackRock's ETHA contributing about $122 million. CoinGlass data cited by Invezz showed more than $1 billion in Ether shorts liquidated during the initial breakout, within a wider crypto liquidation event exceeding $3 billion. The supplied one-week CoinGlass heatmap shows ETH moving rapidly through liquidation clusters between $1,900 and $2,300. The source also cites the US Treasury's buyback announcement as a macro catalyst.

Market impact

The numbers in the sources sketch a market that moved fast and now sits far from its recent range. Ethereum's 3% daily gain to about $2,397 came after an intraday high near $2,448 and an open at $2,327. The daily chart showed ETH about 5.5% above the upper Bollinger Band at $2,272, with the middle band near $1,957. The 14-day RSI stood at 86.12, well above the 70 threshold commonly associated with overbought conditions. On the 4-hour chart, the Awesome Oscillator reached 329.16 with an expanding series of green bars. Flows were substantial: $189 million in net inflows to US spot Ether ETFs on Aug. 19, the strongest since October 2025, with BlackRock's ETHA at about $122 million. CoinGlass data cited by Invezz put Ether short liquidations above $1 billion during the initial breakout, inside a wider crypto liquidation event exceeding $3 billion. The CoinGlass heatmap identifies nearby liquidation concentrations between roughly $2,270 and $2,350. Resistance is cited between $2,448 and $2,500, with $2,625 and $2,750 beyond that and stronger reversal risk near $2,875. Downside references include $2,375, the $2,300–$2,250 area and the $2,000 level.

Why it matters

The sources frame the next few sessions as a test of whether the breakout holds. Daily momentum presents the main short-term risk: the RSI at 86.12 does not guarantee a reversal, per crypto.news, but shows prices advanced much faster than their recent trend. The CoinGlass heatmap identifies nearby liquidation concentrations between approximately $2,270 and $2,350, so a failure to clear $2,450 could send ETH back toward $2,375 and then the $2,300–$2,250 area, according to the source. The $2,000 level remains the larger breakout support, reinforced by the daily Bollinger Band midpoint near $1,957 and a dense heatmap cluster around $1,990, although a decline that deep would erase much of the latest advance. On the upside, crypto.news cites immediate resistance between $2,448 and $2,500, with a sustained break above $2,500 potentially exposing $2,625 and then $2,750, and stronger reversal risk near $2,875, though ETH would need additional demand to reach those levels after such a steep move. Analyst Ted Pillows identified $2,450 as the next resistance zone and said a weekly close above it could open a move toward $3,000.