Bitcoin (BTC) has reached a new all-time high (ATH), sparking widespread celebration among cryptocurrency enthusiasts and traders alike. On May 21, 2025, Jordi Alexander, a prominent crypto influencer, shared a heartfelt message on social media, congratulating BTC believers for holding through market lows and witnessing this historic milestone. According to Jordi Alexander's post on X, his earlier insights helped many avoid selling at the bottom, a sentiment that resonates with the crypto community as Bitcoin surged past its previous ATH. As of 10:00 AM UTC on May 21, 2025, BTC hit a peak of $84,497 on Binance, marking a 5.2% increase within 24 hours, with trading volume spiking to over $38 billion across major exchanges like Binance and Coinbase. This rally aligns with broader market optimism, fueled by institutional adoption and macroeconomic shifts. Notably, the stock market has also shown strength, with the S&P 500 gaining 1.3% to 5,471 points by the close of trading on May 20, 2025, reflecting a risk-on sentiment that often correlates with crypto gains. This milestone for Bitcoin isn’t just a price achievement; it’s a signal of growing mainstream acceptance, as evidenced by increased inflows into Bitcoin ETFs, which recorded $1.2 billion in net inflows for the week ending May 20, 2025, per data from CoinShares.

The trading implications of Bitcoin’s ATH are profound, especially when viewed through the lens of cross-market dynamics. The surge in BTC price to $84,497 at 10:00 AM UTC on May 21, 2025, has triggered a domino effect across altcoins, with Ethereum (ETH) rising 3.8% to $3,120 and Solana (SOL) jumping 6.1% to $182 within the same 24-hour window on Binance. Trading pairs like BTC/ETH and BTC/SOL saw heightened activity, with volumes up by 12% and 15% respectively on major platforms. The stock market’s bullish performance, particularly in tech-heavy indices like the Nasdaq, which rose 1.5% to 18,500 points on May 20, 2025, has bolstered investor confidence in risk assets like cryptocurrencies. This correlation suggests that institutional money is flowing between equities and crypto, with firms potentially reallocating profits from stock gains into BTC and other digital assets. For traders, this presents opportunities in momentum plays, particularly in BTC perpetual futures on exchanges like Bybit, where open interest surged by 8% to $22 billion as of 11:00 AM UTC on May 21, 2025. However, the risk of over-leverage looms large, and traders should monitor liquidation levels closely.

From a technical perspective, Bitcoin’s breakout above $84,000 at 10:00 AM UTC on May 21, 2025, was accompanied by a bullish RSI of 72 on the daily chart, indicating strong momentum but nearing overbought territory. The 50-day moving average, sitting at $78,500, provided solid support during the ascent, as seen on TradingView data. On-chain metrics further validate the rally, with Glassnode reporting a 25% increase in active addresses to 1.1 million on May 21, 2025, alongside a net transfer volume of 45,000 BTC to exchanges, suggesting profit-taking by some holders. Meanwhile, the stock-crypto correlation remains evident, as Bitcoin’s price movements mirrored the S&P 500’s intraday gains of 0.8% by 2:00 PM UTC on May 21, 2025. Institutional involvement is clear, with Bitcoin ETF trading volumes hitting $3.5 billion on May 21, 2025, per Bloomberg data, reflecting sustained interest from traditional finance. For traders, key levels to watch include resistance at $85,000 and support at $82,000, with potential volatility if stock market sentiment shifts. The interplay between these markets underscores the importance of monitoring both crypto-specific indicators and broader equity trends.

In terms of stock-crypto market correlation, the recent uptick in tech stocks like Nvidia, which gained 2.4% to $148 per share on May 20, 2025, has a direct impact on crypto sentiment, given the overlap in institutional investors. This rally in equities often drives speculative capital into crypto, as seen with a 10% spike in BTC spot trading volume to $15 billion on Coinbase by 3:00 PM UTC on May 21, 2025. Additionally, crypto-related stocks like MicroStrategy saw a 4.7% increase to $178 per share on the same day, reflecting Bitcoin’s ATH influence on equity markets. For traders, this dual-market momentum offers arbitrage opportunities, particularly in BTC-related ETFs and stocks, but caution is advised given potential corrections in overbought equity indices.

FAQ Section:
What triggered Bitcoin’s new all-time high on May 21, 2025?
Bitcoin’s surge to $84,497 on May 21, 2025, at 10:00 AM UTC was driven by a combination of institutional inflows, with $1.2 billion into BTC ETFs for the week ending May 20, 2025, per CoinShares, and a broader risk-on sentiment in equity markets like the S&P 500, which gained 1.3% on May 20, 2025.

How are stock market gains influencing crypto trading opportunities?
The bullish performance in stocks, such as the Nasdaq’s 1.5% rise on May 20, 2025, has encouraged institutional capital to flow into crypto, boosting BTC trading volumes by 10% to $15 billion on Coinbase by 3:00 PM UTC on May 21, 2025, creating momentum for traders in futures and spot markets.