Rounding Bottom (Saucer)

A Rounding Bottom is the bullish mirror image of the rounding top. Also known as a “saucer bottom,” it signals a gradual shift from downtrend to uptrend. Key features:

• A long, shallow trough that looks like a “U” shape.
• Price makes marginally lower lows that flatten out and eventually become higher lows.
• Volume typically declines during the descent, bottoms out with price, then increases on the recovery side.
• Confirmation occurs when price breaks above the resistance line (the rim of the saucer).

The rounding bottom often spans weeks or months, making it a long-term reversal base.

The rounding bottom reflects accumulation and gradual buyer dominance:

• Early trough: Sellers maintain control, but downward momentum slows. Bears are still active, though less aggressive.
• Mid-trough: Volume contracts as both buyers and sellers step aside. Price flattens, reflecting indifference and fatigue.
• Late trough: Buyers re-emerge, quietly absorbing supply. Each pullback is shallower, producing higher lows.
• Breakout: When price clears the rim of the saucer, it signals demand has firmly overtaken supply, often sparking strong rallies.

This psychology shows a shift from apathy to optimism, often without a clear catalyst until breakout.

Bulkowski’s research:

• Upward breakout frequency: ~66%.
• Failure rate: ~14%.
• Average rise after breakout: ~30%.
• Throwback frequency: ~58%.
• Target met rate: ~65%.

Though not as dramatic as other bottoms, rounding bottoms are highly reliable for medium- to long-term reversals.

Entry:

• Conservative: Buy on breakout above saucer rim.
• Aggressive: Enter near higher lows inside trough.

Stop loss: Below the lowest point of the trough (conservative) or just under breakout point (aggressive).

Targets: Minimum = depth of the saucer projected upward. Secondary = prior resistance zones.

Invalidation: Breakdown below the trough’s low invalidates the reversal.

• Patience required: Traders often abandon the setup because it takes so long to develop.
• Weak volume: If breakout occurs without volume, the move often stalls.
• Flat tops: If the rim of the saucer is poorly defined, breakout confirmation is unclear.
• Time factor: The longer the base, the more powerful the eventual breakout.
• False optimism: Mid-trough rallies may fail before the true bottom forms.

• If the trough is sharp and “V”-shaped — not a true saucer bottom.
• If overall market remains strongly bearish.
• If breakout occurs on weak volume.
• If timeframe is too short to establish a meaningful base.