For nearly 14 years, one key market ratio moved almost exclusively in bitcoin’s favor. That long-running trend has now reversed, creating a potentially concerning signal for BTC bulls.

Bitcoin’s history of outperforming stocks and other assets helped strengthen the argument that it was one of the best stores of value available. However, a major chart now suggests that this advantage may be fading.

The chart tracks the S&P 500-to-bitcoin ratio, which shows how much BTC is required to buy the U.S. stock index.

Today, the S&P 500 can be purchased with roughly 0.12 BTC, compared with over 300 BTC in 2012. Since bitcoin began trading, the ratio has generally moved lower, while the 200-week simple moving average acted as a long-term barrier. There were short periods when stocks gained on bitcoin, pushing the ratio higher, but none resulted in a sustained break above that level.

Until now.

In recent weeks, the ratio has climbed above the 200-week moving average and held the breakout, marking the first meaningful shift above a level that had contained it for years. The same pattern is appearing in the Nasdaq-to-bitcoin ratio, which has also moved beyond its 200-week average for the first time.

That development has caught the attention of bitcoin investors. A sustained move above this major technical level suggests BTC’s historic ability to outperform equities may be weakening. If the trend continues, the argument that bitcoin is a superior store of value could face renewed challenges.

For macro traders, a ratio that no longer consistently favors bitcoin reduces the cryptocurrency’s appeal as an asset capable of dramatically improving portfolio returns. It also complicates the most aggressive forecasts for the next bull cycle, including projections of $300,000-plus BTC prices based heavily on previous market behavior.

However, the shift may also reflect bitcoin’s evolution into a more mature asset class.

Bitcoin’s biggest rallies occurred when the market was smaller, liquidity was thinner, and new demand could create massive price swings. With BTC now a trillion-dollar asset supported by spot ETFs, futures, options, and institutional products, repeating those extreme gains has become increasingly difficult.

In many ways, the same financial systems that have made bitcoin easier to access and trade may also be limiting the explosive moves that defined its earlier years.