Savvy traders use a wide range of tools to analyze the market. The Relative Strength Index (RSI) is one of the most popular indices for sniffing out trend strength and momentum limits.
Currently, the RSI indicates that Bitcoin has become oversold, indicating that the recent sell-off has been too intense and that the price may see a relieving rebound. But don’t bet on the farm: Oversold data doesn’t portend a full-blown bull market.
Mechanical engineer and renowned technical analyst J. Welles Wilder Jr invented RSI in 1978 and revealed the formula and explanation in his book “New Concepts in Technical Trading Systems”.
This indicator measures price movements over a 14-day period, producing a value that fluctuates between 0 and 100. Readings below 30 indicate that prices have fallen more than they have risen over the past 14 days, which is a sign of strong bearish momentum.
Followers of Wilder and the RSI call this oversold: The market has plunged too far, too fast relative to recent normal levels, setting the stage for a mean reversion or rebound.
Markets often rebound when the RSI becomes oversold, although a reading below 30 by itself only indicates what has happened recently.
The logic behind this oversold bounce is simple: Trader interpretation turns it into a self-fulfilling prophecy, as enough trading desks and algorithms flood into the oversold bounce, causing it to occur.
This is especially true when an oversold reading occurs when an asset trades close to a key support level (a price level when buyers previously stepped in to stem the decline).
This is exactly what is happening with Bitcoin right now.
The chart shows BTC’s daily price fluctuations in candlestick format, with the lower pane showing the 14-day RSI. A candlestick chart visually captures an asset’s price movement over a period of time, such as a day or an hour, showing the open, close, high, and low in a single compact shape similar to the candles we use in our daily lives.
The RSI has dropped below 30, indicating oversold conditions, while Bitcoin is trading close to the $73,000 to $75,000 support zone. The decline in April 2025 failed in this range, and the bull market in early 2024 stalled in this same range. This cemented its status as a key battleground for buying and selling over the past two years.
Therefore, a self-fulfilling prophecy may come true, causing prices to rebound significantly.
That said, a rebound is not guaranteed, nor does a potential rebound necessarily signal the start of a new bull market. Like any other indicator, the RSI can generate false signals.
Also, context is important. Historically, oversold data have only led to weak rallies within broader bearish trends, as in 2022. The last time that happened, in November, triggered a multi-week consolidation that eventually gave way to a deeper sell-off last month.
