Support & Resistance — the Foundation

7.1 What support & resistance actually are

Support is a price level below the current price where buying interest has historically emerged strongly enough to reverse a decline. Resistance is the mirror above: a price where selling has repeatedly overwhelmed buying.

These are not lines; they are zones. Price rarely turns at exactly the previous swing high or low — it turns within a few points of it. Draw S/R as narrow rectangles (5–10 points wide on Nifty daily; 20–30 points on BankNifty), not as single lines. This one shift eliminates most of the "the level held for a while, then broke by 3 points, then reversed" frustration.

7.2 How to find levels — the six sources

1. Prior swing highs and lows — the most durable levels. Multi-month swing highs on the daily chart matter for weeks. Weekly swings matter for months
2. Prior day's high, low, and close — the freshest intraday levels. Updated every night. Essential for intraday traders
3. Round numbers — 25,000 / 25,500 / 26,000 on Nifty. Psychological, not fundamental, but very real
4. Moving averages as dynamic S/R — EMA 20 and EMA 50 on daily; EMA 20 on 15-min. Price often bounces off these in a trending market
5. Fibonacci retracement levels — 38.2%, 50%, 61.8% of the last swing. Best used when the swing being retraced was clean and directional
6. Trendlines — dynamic S/R along a moving line. See TA Ch 2 for drawing rules

7.3 Level quality — not all levels are equal

Levels vary in strength. A level's quality depends on:

• Number of prior touches — 2+ touches = valid level. 4+ touches = strong level. 6+ touches = major level often about to break
• Timeframe of formation — weekly-chart levels are stronger than daily; daily stronger than intraday. Always identify levels on the higher timeframe first
• Recency — recent levels (last few months) matter more than levels from 5 years ago. Old levels can still work but need confirmation
• Alignment — a price where a swing high, an EMA, and a round number all cluster is a very strong level. "Confluence" is real

7.4 Using S/R in a trading strategy

The three ways levels are used in price action strategies:

Reversal at the level

Wait for a price action reversal pattern (pin bar, engulfing, morning/evening star) to form AT the level. Enter on trigger, stop beyond the level. Target the next opposing level.

Breakout of the level

Wait for a decisive close through the level with volume expansion. Enter on the close (aggressive) or on the retest of the broken level (patient). Stop back inside the level. Target the next same-direction level.

Range trading between levels

When price is bounded between two well-tested levels, buy at support, sell at resistance until one side breaks. Best used in a neutral market bias (see Ch 6).

7.5 Role reversal — the polarity rule

When price breaks a support level decisively and closes below it, that former support tends to act as resistance on any subsequent retest. And vice versa — broken resistance becomes support.

This "polarity flip" is one of the most reliable structural principles in price action. It's the mechanical basis for the classic retest entry:

1. Level breaks with a strong close beyond it
2. Price pulls back to retest the broken level
3. Reversal pattern forms at the retest (pin bar, engulfing)
4. Enter on trigger; stop beyond the retest extreme; target the next same-direction level

7.6 On the chart

Nifty daily. Zoom in and try to draw 3–5 horizontal S/R zones based on the six sources above. Look for confluences — where a prior swing overlaps with a round number, or where an EMA and a swing high line up. Those are the levels worth remembering.

7.7 Confluence math — when multiple level sources agree

A single S/R level is useful. Two or three levels at the same price is a wall. The math on "confluence" is empirical — traders who cluster levels at the same price track it as a quality signal.

Practical Nifty examples of high-confluence levels:

• 25,000 — round number + likely prior swing + likely 200-day MA in various regimes = 3-source confluence
• Prior all-time high — psychological level + long-term swing + often near a Fibonacci extension of the last multi-year swing = 3-source
• Yesterday's low + VWAP + prior week's low (intraday) — three same-day tracked levels can converge

7.8 Level "quality" — the five-factor grading rubric

Not all levels marked on the chart are worth trading. Grade each level before you commit real capital:

A Grade-A level with 5-for-5 factors is genuinely rare — you might find 2-3 per year on Nifty daily. When one appears, it deserves your full attention.

7.9 The retest entry — the highest-quality pattern in price action

Direct breakout entries are 50-60% reliable. Retest entries (waiting for price to break a level, then pull back to test the broken level, then reject the retest) are 70-75% reliable. Why:

1. The break itself is confirmed. No guessing about whether the level held
2. Polarity is confirmed in real time. The retest either holds (confirming the flip) or fails (confirming the break was fake)
3. Stop is objectively defined. Stop goes just beyond the retest low/high — no ambiguity
4. Emotional patience filters out impulse trades. The trade requires waiting; the wait itself is a quality filter

Full retest-entry checklist:

1. Level breaks with volume expansion (bar closes decisively beyond the level)
2. Wait 3-15 bars for the pullback (varies by timeframe — 15-min intraday: 5-10 bars; daily: 3-8 bars)
3. Price returns to the broken level. Ideally overshoots slightly then reverses
4. Reversal candle forms at the retest — bullish engulfing, pin bar, or hammer
5. Enter at the reversal candle's high (long) / low (short) break
6. Stop just beyond the retest extreme (wick end)
7. Target the next same-direction level

7.10 Dynamic vs static S/R — combining moving averages with horizontal levels

Static levels (prior swings, round numbers) don't move. Dynamic levels (moving averages, VWAP, trendlines) shift with price. The most reliable S/R zones are where the two agree.

When looking for a setup, first plot the static levels. Then overlay the moving averages you use. Any zone where static and dynamic converge within 0.3% of price = premium setup zone.