Support, Resistance and the Open Range: Reading the Market's Daily Map
Before placing any trade, you need to know where the market has been defended and where it has been rejected. Support, resistance, and the opening range give you a map of those levels. This guide explains how to find them, use them, and trade with them.
- 1
Find where the market has bounced or been rejected before — these are your SR levels
Look at the chart from the previous few sessions. Wherever price has turned around multiple times is a significant level. If the market keeps bouncing upward from a certain price, that is support. If it keeps getting pushed back down from a certain price, that is resistance. Mark these levels before the market opens.
- 2
Note the Opening Range — the high and low of the first 15 minutes of the day
When the market opens, the first 15 minutes of trading creates a small range. The high of that range is the Opening Range High (ORH) and the low is the Opening Range Low (ORL). This range reflects the initial battle between buyers and sellers for the day. It is not random — it often forms near significant SR levels.
- 3
Wait for a breakout of the Opening Range
Once the first 15 minutes are over, watch whether the price breaks above the ORH or below the ORL. A break above the ORH suggests buyers are winning the early battle. A break below the ORL suggests sellers are in control. Do not trade the range itself — wait for the break.
- 4
Take the trade only when the breakout lines up with a pre-existing SR level
This is the core filter of the SR-OSR method. If the ORH happens to sit at a resistance level from yesterday — and price breaks through both at the same time — that is a stronger signal than either alone. The two layers of confirmation reduce false breakouts significantly.
What Is Support and Resistance?
Markets have memory. When price reaches a level where many traders previously bought, there is a natural tendency for buying to happen again there — this is support. When price reaches a level where selling pressure previously appeared, it tends to appear again — this is resistance. These levels are not magic lines. They are zones of collective memory and decision-making by thousands of market participants.
When the Opening Range high aligns with a prior resistance level, a breakout above both is a high-probability long entry.
A Simple Way to Think About It
Imagine price as a ball. Support is the floor — when the ball hits it, it bounces up. Resistance is the ceiling — when the ball hits it, it bounces back down. But floors can become ceilings and ceilings can become floors. When price breaks convincingly through a resistance level, that old resistance often becomes new support on the next pullback.
How to Identify SR Levels on a Chart
1. Look for Price Turning Points
A support level is any price where the market bounced upward at least twice. A resistance level is any price where the market was rejected downward at least twice. The more times a level has held, the stronger it is. A level that has been tested and held five times is far more significant than one that has held once.
2. Look at Round Numbers
Traders are psychologically drawn to round numbers — round numbers like 100, 105, 110, 23,000 on the index. These become natural magnets for order placement. Institutional traders set large limit orders at these levels. The result is that round numbers consistently act as support and resistance, often without any particular fundamental reason.
3. Look at Previous Day's High and Low
The previous day's high (PDH) and previous day's low (PDL) are among the most-watched levels in intraday trading. If today's price approaches the PDH and breaks through it, that is a significant bullish signal. If it stalls and reverses, the PDH is acting as resistance. These levels are used by traders across markets and timeframes, which is exactly why they tend to work.
SR Levels Work Because Enough Traders Believe in Them
SR is partly self-fulfilling. When millions of traders watch the same level, they all place orders near it — which creates the very support or resistance they were watching for. This does not make SR arbitrary. It makes it one of the most reliable tools available, because the self-reinforcing nature of collective behaviour at price levels is real and measurable.
What Is the Opening Range?
The opening range is the price range formed in the first 15 minutes after the market opens for the day. It represents the initial price discovery phase — the period when overnight orders, global market moves, and early intraday participants clash to find a fair opening value for the day.
The Opening Range High (ORH) and Opening Range Low (ORL) become the day's first significant levels. Studies across multiple markets show that the day's final high is often the same as the ORH roughly 30–40% of the time. The market's initial range contains a remarkable amount of information about where it intends to go.
Why 15 Minutes?
15 minutes is not the only valid opening range timeframe — some traders use 30 minutes or even 5 minutes. But 15 minutes has become a widely-used standard because it captures enough early trading to establish a meaningful range without waiting so long that you miss the first breakout move. Use the timeframe that fits your trading style, but be consistent.
The SR-OSR Method: Combining Both Filters
On its own, a break of the Opening Range gives a signal. On its own, a break of an SR level gives a signal. But when both happen at the same price at the same time — when the market breaks the ORH right at a previous resistance level — the signal is significantly stronger. This two-filter approach is the core of the SR-OSR method.
| Signal | What it means | Quality |
|---|---|---|
| Price breaks ORH alone | Buyers won the opening battle | Moderate — can be a false breakout |
| Price breaks a previous resistance alone | SR breach — potential trend change | Moderate — needs volume confirmation |
| Price breaks ORH that aligns with resistance | Buyers overwhelmed a defended level at a trigger | Strong — two filters aligned |
| Price breaks ORL that aligns with support | Sellers pushed through a defended floor | Strong — two filters aligned |
A Real Setup Example
the index closed yesterday at 22,240. The previous day's high was 22,310. Today, the index opens and in the first 15 minutes trades between 22,200 and 22,300. The ORH is 22,300 — just below the PDH of 22,310. At 9:30 AM, price breaks through 22,310 with expanding volume. This is an SR-OSR long signal: the ORH and the PDH aligned at the same zone, and both were broken together. The trade is a long position in the index or a index call option.
Trade Entry, Stop Loss, and Target
Entry
Enter when price closes a candle above the combined ORH/SR level (for a long trade) or below the combined ORL/SR level (for a short trade). Do not chase — if you miss the initial break candle, wait for a retest. Price often pulls back to the broken level before continuing, giving you a second, cleaner entry.
Stop Loss
Place your stop loss just below the breakout level for longs, or just above for shorts. A rule of thumb: if the breakout level is 22,310 and you go long, your stop is at 22,285 — below the level that would invalidate the breakout. If price re-enters the range, the trade idea is wrong. Exit without argument.
Target
Set your first target at the next significant SR level above (for longs) or below (for shorts). If no clear level exists, use a 1:1.5 or 1:2 risk-reward ratio — risk 25 points, target 37–50 points. Exit at least half your position at the first target and let the rest run with a trailing stop.
Practise This in the Simulator
The paper trading simulator on this site is built around the SR-OSR method. Every session replays real historical tick data from the index. Your job is to identify the opening range in the first few candles, mark the SR levels visible on the chart, and wait for a clean SR-OSR entry signal. Because the data is historical, you already know the outcome — but you do not know it yet. You are experiencing the trade as if it is live.
- Load a session and let the first 15 minutes play through. Note the ORH and ORL.
- Look at the previous candles and identify any SR levels near the opening range boundaries.
- Set your stop loss points and target points in the Trade Settings panel before entering.
- When a breakout aligns with an SR level, press Buy CE (bullish breakout) or Buy PE (bearish breakdown).
- Review your win rate in the Positions panel at the end of each session. Aim to understand why each trade worked or failed.
How to Get the Most from the Simulator
Run at least 20 sessions before drawing any conclusions about your performance. Trading is probabilistic — a handful of sessions tells you very little. After 20 sessions, look at your win rate and average profit versus average loss. If your win rate is above 45% and your average winner is larger than your average loser, your edge is positive. Refine from there.
Common Mistakes and How to Avoid Them
| Mistake | Why it hurts | The fix |
|---|---|---|
| Trading the opening range immediately at 9:15 | Too early — the range is not formed yet | Wait the full 15 minutes before any entry |
| Trading every ORH/ORL break without SR filter | High false-breakout rate without confirmation | Enter only when breakout aligns with an SR level |
| Placing stop too close to entry | Normal noise will stop you out of a valid trade | Give price room — stop below the breakout level |
| Chasing the move after missing the entry candle | Entering late means worse risk-reward | Wait for the retest of the broken level |
| Ignoring the broader market trend | A range breakout against a strong trend often fails | Check higher timeframe direction before entering |
Risk Disclosure
All trading involves risk of loss. Support and resistance levels are not guarantees — they represent zones of historical price action interest, not certainties. False breakouts are common and require stop losses to protect capital. All examples are for educational purposes only and do not constitute investment advice. Consult a licensed financial advisor before trading.
Key Takeaways
- Support is a price level where buyers have repeatedly stepped in. Resistance is where sellers have repeatedly appeared.
- The Opening Range (OR) is the high and low formed in the first 15 minutes of the trading session.
- A breakout of the Opening Range becomes significant when it aligns with a pre-existing SR level.
- SR-OSR trades combine two filters: a structural level from the past (SR) and a breakout trigger from today (OR).
- The opening range gives you the day's battle lines — a break above is bullish, a break below is bearish.
- Use the simulator to practice identifying SR levels and executing opening range breakout trades without risking real money.