A rounding bottom (also called a saucer or U-shape) is a slow, gradual reversal from a downtrend to an uptrend. Its upside-down version, the rounding top (an inverted U or arc), marks a slow turn from an uptrend to a downtrend. These patterns usually develop over weeks or months and appear on stock, crypto and forex charts.
Rounding bottom (bullish)
Price falls, but the fall slows down; price moves sideways for a while near the low; then it gradually begins to rise. The smooth, curved shape shows selling pressure fading slowly and buyers gradually taking control, rather than a sudden turn.
Rounding top (bearish)
The mirror image: an uptrend loses momentum, flattens out, and gradually turns down. The curved top, sometimes called an arc, shows buying interest slowly drying up.
What beginners should notice
- These patterns are slow; they are easier to see on daily and weekly charts.
- Volume often falls near the middle of the curve and rises as the new trend begins.
- Traders often watch for a break of the level where the curve started (the “rim”) as confirmation.
- Because they form slowly, patience matters more than speed.
Rounding bottom vs V-shape
A rounding bottom turns slowly and smoothly. A V-shape reversal turns suddenly and sharply. The cup and handle also includes a rounded bottom, followed by a small handle.
See all patterns in our chart patterns guide.
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This article is for education only and is not investment advice. Trading shares, cryptocurrencies, forex and other markets involves risk, including the loss of capital.