Three Inside Up and Down

The Three Inside Up and Three Inside Down are three-candle reversal patterns that directly address the primary weakness of the standalone harami: ambiguity about follow-through. Where the harami signals indecision and leaves traders guessing, these patterns add a mandatory confirmation candle that resolves the question mechanically. The Three Inside Up is a bullish reversal pattern that appears after downtrends; its bearish mirror image, the Three Inside Down, forms at the top of uptrends. Both perform best on daily and 4-hour charts at well-defined support and resistance levels.

How to Identify Three Inside Up and Down

1. Large first candle with a full real body — Day 1 is a strong directional candle in the direction of the prevailing trend. For the Three Inside Up, Day 1 is bearish with a large real body and minimal wicks. The body should be at least 1.5x the average candle size over the prior 10 bars. A small-bodied first candle reduces the significance of the harami that follows.

2. Day 2 is a harami inside the first candle’s body — The second candle opens and closes entirely within Day 1’s real body (open to close range), closing in the opposite direction. For the Three Inside Up, Day 2 is a bullish candle. Volume should contract on Day 2, reflecting a pause in selling pressure rather than active buying.

3. Day 3 closes beyond the first candle’s body — This is the confirmation requirement. For the Three Inside Up, Day 3 must close above Day 1’s open price — the top of Day 1’s real body. A close above Day 1’s shadow but not its body does not qualify. For the Three Inside Down, Day 3 closes below Day 1’s open (the bottom of Day 1’s real body). Volume should expand on Day 3, ideally exceeding the 20-bar average by at least 1.2x.

4. Pattern appears after a defined trend move at a named level — The Three Inside Up performs best after a 3-5 day pullback, ideally touching a prior swing low, the 20 EMA, the 200 SMA, or a round number. A pattern that forms mid-range in a sideways market has roughly 50% reliability — no edge over a coin flip.

Entry Rules

1. Wait for Day 3 to close — Never enter on Day 2. The harami alone has only 50-55% reversal accuracy. The third candle’s close is the sole criterion that separates a confirmed reversal from an unconfirmed setup. Entering on Day 2 exposes the trade to full Day 1 range risk with no confirmation.

2. Verify the closing level — Confirm Day 3 closes beyond Day 1’s real body, not just its shadow. Check the actual open price of Day 1, not the high. This is the most commonly misapplied rule in pattern identification.

3. Require volume expansion on Day 3 — Day 3 volume should be at least 1.2x the 20-bar average. A Day 3 close on below-average volume signals weak follow-through and increases false-signal probability.

4. Require confluence — The pattern should appear at a prior swing low, moving average, or round number. Trading the pattern in the middle of a range without confluence reduces the 65% accuracy rate significantly.

5. Enter at Day 3 close or Day 4 open — Entering at the Day 3 close captures the best price. If using a next-day limit order, set it at or below Day 3’s close to avoid chasing an opening gap.

Exit Rules and Targets

1. Primary target: nearest resistance level — For the Three Inside Up, identify the nearest significant resistance: the prior swing high, a round number, or a major moving average above the current price. This is the first profit-taking level.

2. Secondary target: measured move — Calculate the height of Day 1’s real body and project it upward from Day 3’s close. This gives a measured move target. If Day 1 spans $8 (open to close), add $8 to Day 3’s close for the secondary target.

3. Trail to break-even at 1R — Once the trade advances 1R (the distance from entry to stop), move the stop to break-even. This locks in a risk-free trade and allows the position to run toward the measured move target.

4. Exit on close below Day 2’s high — For the Three Inside Up, a daily close back below Day 2’s high (the midpoint of the reversal structure) signals pattern failure. Exit immediately rather than waiting for the stop to be hit.

Target Calculation: Measure the distance from Day 1’s open to Day 1’s close (the real body height). For the Three Inside Up, add this distance to Day 3’s close price. For example, if Day 1 spans $8 and Day 3 closes at $509.50, the measured move target is $517.50.

Stop Loss Placement

Two placement options exist, with meaningful differences in risk/reward.

The conservative stop goes below the Day 2 low (Three Inside Up) or above the Day 2 high (Three Inside Down). This placement uses the harami candle as a buffer — if price retreats past Day 2’s extreme, the reversal thesis is compromised. This stop typically results in R:R ratios of 1.5:1 to 2:1.

The aggressive stop goes below the Day 3 low (Three Inside Up). Since Day 3 is the confirmation candle, a close back below its low questions the momentum behind the breakout. This tighter stop can push R:R to 2.5:1 or better but allows less room for intraday noise. Use the aggressive stop only when Day 3 shows strong volume (1.5x average or more) and the pattern appears at a major confluence level.

Practical Example

SPY pulls back 5 days from $520 to $500, approaching the round-number support at $500 — also a prior swing low. Day 1: SPY opens at $508 and closes at $501, printing a large bearish candle (real body: $7). Day 2: Opens at $503, rallies to close at $506 — a bullish inside candle fully contained within Day 1’s range. Day 2 volume comes in at 0.7x the 20-bar average, consistent with a healthy harami. Day 3: Opens at $505 and rallies strongly to close at $509.50 — clearing Day 1’s $508 open by $1.50. Day 3 volume is 1.6x the 20-bar average.

Entry triggers at $509.50. Conservative stop goes below Day 2’s low at $502.50 — $7.00 risk per share. Primary target is $520 (prior high): $10.50 reward. Risk/reward: 1.5:1. On a $25,000 account risking 2% ($500), position size is 71 shares ($500 / $7.00). Potential gain at the $520 target: $745.50. The measured move target (Day 1 body of $7, projected from $509.50) points to $516.50 as an intermediate level to watch for partial profit-taking.

Best Timeframes for Three Inside Up and Down

Daily charts produce the most reliable Three Inside Up and Down signals, where the three-candle structure spans approximately one week and institutional participation is highest. Thomas Bulkowski’s research (Encyclopedia of Candlestick Charts, 2008) places the Three Inside Up in the top third of bullish reversal patterns by reliability, with approximately 65% accuracy in defined downtrends on daily charts. The 4-hour chart is the next most reliable timeframe and suits active swing traders working shorter holding periods. Below the 1-hour chart, noise significantly degrades pattern quality and the accuracy rate falls toward 50%. Weekly charts work well for position traders and tend to produce larger measured moves, though setups are rare. Accuracy on all timeframes drops sharply in choppy, low-trend environments — the market condition filter matters as much as the pattern itself.

Common Mistakes

1. Entering on Day 2 — This is the most common and costly mistake. Day 2 is a harami with only 50-55% reversal accuracy. Traders who enter on Day 2 experience the full volatility of an unconfirmed setup and face larger stop distances relative to the eventual R:R. Wait for Day 3’s close unconditionally.

2. Confusing shadow clearance with body clearance — Day 3 must close above Day 1’s open (body), not Day 1’s high (shadow). Checking the wrong price level inflates the pattern count and includes many failed setups. Always reference the real body boundary.

3. Trading the pattern in choppy markets — The 65% accuracy figure applies to patterns in defined trends. In sideways, ranging conditions the rate drops to near-random. Before entering, confirm the prior trend with a 10-period ADX reading above 20 or a visible sequence of lower lows.

4. Ignoring volume on Day 3 — A Day 3 close on below-average volume signals weak commitment to the reversal. High-quality setups show volume contracting on Day 2 and expanding on Day 3. When Day 3 volume is below average, reduce position size by 50% or skip the trade entirely.

5. No confluence requirement — A Three Inside Up that forms in the middle of a range, with no nearby support, significant moving average, or round number below it, performs materially worse than one at a named level. Always identify the nearest confluence before committing to the trade.

How to Journal Three Inside Up and Down Trades

Journal Field	What to Record	Why It Matters
Pattern Type	Three Inside Up / Three Inside Down	Filter and review pattern trades separately
Third Candle Close	Price vs. Day 1 open (body clearance in $)	Track how much clearance correlates with success
Volume Signature	Day 1/2/3 volume relative to 20-bar average	Identify which volume profiles produce best outcomes
Stop Type	Conservative (Day 2 low) or Aggressive (Day 3 low)	Compare R:R and win rates by stop placement
Confluence Level	Specific level type (swing low, 200 SMA, round number)	Measure pattern accuracy by confluence quality
Market Condition	Trending / Choppy / Ranging	Quantify how much market context affects accuracy
Setup Quality	Rate 1-5	Identify which quality tiers are worth trading

After 50+ tagged trades in JournalPlus, the filtering and tagging tools let you compare win rates for conservative vs. aggressive stop placements, for patterns at named support levels vs. mid-range, and for high-volume vs. low-volume Day 3 confirmations. This kind of segmentation turns the general 65% accuracy figure into a personal benchmark — and reveals whether the pattern works better for your specific markets and timeframes. Most traders find that 80-90% of their Three Inside Up gains come from 30-40% of setups, almost always the ones at strong confluence with expanding Day 3 volume.

For related candlestick patterns, see Engulfing, Morning Star, Evening Star, and Dark Cloud Cover. For stop and target methodology applicable to these setups, the Piercing Line and Hammer guides cover complementary reversal confirmation approaches.