Bitcoin Surges 36% Since August 18 While Gold and Stocks Remain Stagnant: A Shift in Correlation?

Sep 26, 2026
bitcoin-surges-36%-since-august-18-while-gold-and-stocks-remain-stagnant:-a-shift-in-correlation?

Sam Daodu

5 min read

Quick Read

  • Bitcoin surged 36% while SPY flatlined and gold dropped 1.4%, yet the 90-day correlation still ties BTC to gold at a six-year high.

  • Two of Bitcoin’s three rally drivers reverse quickly. Treasury buybacks and short squeezes fall into this category, making sustained spot ETF inflows the only durable demand signal.

  • Five-year yields approaching 5%, a 17-year high, challenge Bitcoin’s rally; holding above $80,875 as yields rise would signal a genuine correlation break.

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Bitcoin (CRYPTO: BTC) has surged by 36% since August 18, 2026, while the two assets it typically moves in sync with have shown little movement. Over the same period, the SPDR S&P 500 ETF Trust (NYSEARCA: SPY) returned only 0.05%, and SPDR Gold Shares (NYSEARCA: GLD) dropped 1.4%. This significant gap has led to renewed discussions about whether the established correlation between Bitcoin, stocks, and gold is coming to an end.

Now priced near $84,000, Bitcoin’s remarkable rise raises the question: Can five weeks of divergence be enough to declare the long-standing relationship with these assets over, or is this a short-term anomaly that might revert to the historical trend?

A line chart titled 'BTCUSD Bitcoin/United States Dollar -2.04%, GC1 Gold 45.51%, SI1 Silver 46.97%'. The chart displays percentage changes for three assets over time, with the x-axis ranging from early 2019 to late 2021 and the y-axis from -80% to +100%. A blue line representing BTCUSD shows a significant initial drop followed by a recovery, ending at -2.04%. A red line for GC1 Gold consistently rises, finishing at +45.51%. An orange line for SI1 Silver also shows a strong upward trend, ending slightly higher than gold at +46.97%.

Koyfin

A Five-Week Window and a 90-Day Window Can Disagree, and They Do

A close-up image showing a large, gold-colored Bitcoin coin with intricate circuit board engravings, positioned centrally and partially obscuring a slightly faded and draped American flag. The blue field with white stars of the flag is visible on the left, and the red and white stripes are visible on the right. Subtle green and red line graphs are faintly visible in the background, particularly over the flag's stripes.

creativetan / Shutterstock.com

Correlation is a statistic ranging from minus one to plus one, which describes how two assets have moved in relation to each other over a specific period. A score of plus one means they move together perfectly, zero indicates no relationship, and minus one shows they move in opposite directions. Since correlation can vary across time frames, a five-week correlation reading may differ from a 90-day reading, and both can be valid.

Currently, Bitcoin’s performance over the five weeks leading to September 23 shows a rise against a flat stock market and a declining gold price—this occurs in a calm context, with the VIX index, which measures expected stock market volatility, closing at 14.21, below the 15 mark that typically indicates stability.

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However, the 90-day correlation shows Bitcoin at a six-year high with gold as of mid-September. Both views have their merits, but the longer 90-day trend presents a stronger case against the shorter five-week divergence.

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