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Technical analyst John Bollinger says Ethereum and Solana are showing bullish “W” bottom patterns and hinted that a similar setup on Bitcoin’s chart could indicate a big move for the crypto market.
The “W” bottom is a bullish reversal signal that often precedes sharp upward moves. Bollinger, who invented the Bollinger Bands volatility indicator, said the formation has yet to appear on Bitcoin’s chart and told his 254k followers in an X post that it’s “Gonna be time to pay attention soon.”
Pseudonymous trader and analyst “Satoshi Flipper” observed in an X post that the last time Bollinger told his followers to pay attention was in July 2024, when Bitcoin went on to skyrocket from $49K to $110K.
The last time John said to pay attention was July of 2024 and $BTC pumped from $49k to $110k https://t.co/0Vjgysayds pic.twitter.com/cETAMLiDzk
— Satoshi Flipper (@SatoshiFlipper) October 18, 2025
ETH And SOL Recover From Weekly Losses, While Bitcoin Starts To Climb
Bollinger’s comments follow a volatile month for crypto, with a record $19 billion in liquidations on Oct. 10 after US President Donald Trump announced additional 100% tariffs on China’s exports.
Ethereum and Solana have since rebounded modestly from recent losses, while on-chain data from Santiment suggests Bitcoin, ETH, and XRP are now in undervalued territory, a setup that has historically preceded market recoveries.
Data from CoinMarketCap shows that SOL’s price has climbed 3% in the past week, while ETH is up more than 2%.
But Bitcoin remains more than 4% in the red even after climbing a fraction of a percent in the last 24 hours to trade at $107,080.07 as of 1:00 a.m. EST.
BTC price (Source: CoinMarketCap)
BTC, XRP And ETH Present Buying Opportunities
As Bollinger urges traders and analysts to pay attention to the crypto markets for a possible big move, on-chain intelligence and sentiment platform Santiment says that several cryptos recently dipped into undervalued territory.
In an Oct. 17 post on X, Santiment said that the Mean Value to Realized Value (MVRV) of the top cryptos by market cap “has jumped into negative range” after the recent crypto market bloodbath.
📉 With the past week of crypto’s bloodbath, the MVRV (Mean Value to Realized Value) of top caps has jumped into negative range. Average returns of wallets active in the past 30 days implies that a recovery for XRP (especially) is likely:
👍 Bitcoin $BTC: Average trader returns… pic.twitter.com/AgPpUnba8A
— Santiment (@santimentfeed) October 17, 2025
The MVRV is a key on-chain metric used to evaluate whether a crypto is overvalued or undervalued relative to its historical cost basis.
The “MV,” or market value, represents the current market cap of a crypto, which is its supply multiplied by its price.
Meanwhile, the “RV,” or realized value, is the aggregate of all coins based on the price at which they last moved on-chain, reflecting the realized cost basis of all holders.
Santiment said in its post that the MVRV for Bitcoin is around -5.8%. The indicator also stands at -8.4% for Ethereum. The platform then highlighted XRP for its MVRV of -15.3%.
An MVRV above 1% suggests holders are in profit. Conversely, a reading below 1% shows that holders are at a loss.
According to Santiment, those MVRV readings suggest that a market rebound is approaching.
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