Learn scalping setups and execution — Stock-Market notes

WHAT is scalping?

WHY it exists: Markets are not perfectly efficient on the micro-timescale. Order flow arrives in bursts, market makers must quote both sides, and stops/limits cluster at round numbers. These create repeatable micro-patterns — that is your edge.

HOW you win: Not by being right about direction over hours, but by

entering where risk is tiny and well-defined,
taking profit before the move fades,
keeping average win ≥ average loss × (loss-rate / win-rate).

The profitability condition (derive it, don't memorise)

Derivation from scratch (Why each term?):

Probability of a winning trade is $p$ ; each win nets $W$ . Expected contribution $= p\,W$ . Why? Expected value = probability × payoff, summed.
Probability of losing is $(1-p)$ ; each loss costs $L$ . Contribution $=-(1-p)L$ .
Every trade pays cost $c$ (spread + fees), win or lose, so subtract it once.

Rearranging for the minimum win-rate you need at reward:risk ratio $R = W/L$ :

E>0 \;\Rightarrow\; pW > (1-p)L + c

Ignoring $c$ for the clean bound and dividing by $L$ :

pR > 1-p \;\Rightarrow\; p > \frac{1}{1+R}

Core scalping SETUPS

1. Pullback-to-VWAP (trend continuation)

WHAT: In an uptrend price dips back to the VWAP (Volume-Weighted Average Price) and bounces.
WHY it works: VWAP is the "fair price" institutions benchmark against; they buy dips toward it. It becomes intraday support.
HOW: Enter long on the bounce, stop just below VWAP, target the prior high.

2. Opening-Range Breakout (ORB)

WHAT: Mark the high/low of the first 5–15 min. Trade the break.
WHY: The opening range absorbs overnight orders; a clean break signals which side won.
HOW: Buy break of range-high, stop at range mid, target = range height.

3. Round-number / level reclaim

WHAT: Fade or ride price at round numbers (e.g. ₹1000, 20000 on index).
WHY: Stop-loss and limit orders cluster at round numbers → predictable liquidity pockets.

Figure — Learn scalping setups and execution

EXECUTION — the part that actually makes money

Execution rules that follow directly:

Use limit orders to capture (not pay) the spread when possible. Why? Paying the spread on every entry is a guaranteed drag $s$ .
Trade only high-liquidity instruments. Why? Tight spread → small $s$ ; deep book → small $\sigma_{slip}$ .
Hard stop, always. Why? A single "let it run" loss can equal 10 wins because your $W$ is small.
Cut trading in chop. Why? Low $p$ regimes make $E<0$ regardless of skill.

Recall Feynman: explain to a 12-year-old

Imagine standing near an ice-cream cart on a hot day. You notice that every time the line gets short, one or two people quickly show up and buy. You grab an ice cream when the line is short and sell it to the next person for one rupee more, again and again. Each rupee is tiny, but you do it 50 times. That's scalping: many tiny sure-ish wins. But if you ever hold an ice cream too long, it melts (a big loss) and wipes out many rupees — so you always sell fast and never let one melt.

Active Recall

What is scalping?

A style holding positions seconds to minutes for tiny repeated profits, relying on high win-rate and low cost rather than large directional moves.

Expectancy formula per trade

E = pW - (1-p)L - c

; profitable when

E>0

Minimum win-rate at reward:risk R (ignoring cost)

p > \frac{1}{1+R}

Required win-rate at 1:1 reward:risk

More than 50% (and higher once spread+fees are added).

Why VWAP acts as intraday support in an uptrend

Institutions benchmark to VWAP and buy dips toward it, creating repeated demand.

Why do round numbers give scalping edges

Stop and limit orders cluster there, creating predictable liquidity pockets.

Why prefer limit orders in scalping

To capture the spread rather than pay it, reducing the cost term that dominates tiny trades.

Biggest killer of a scalping account

A single uncut loss that equals many small wins — hence a hard, pre-set stop.

Why is high win-rate alone not enough

If losers are large (low R), expectancy

pW-(1-p)L

can still be negative.

Opening-Range Breakout logic

Mark first 5–15 min high/low; break signals which side absorbed overnight orders; target ≈ range height.

Connections

VWAP — the fair-price anchor behind pullback scalps
Order-Flow-and-Liquidity — the imbalance you actually trade
Bid-Ask-Spread-and-Slippage — the cost that dominates scalp math
Risk-Management-Position-Sizing — daily loss limits and stop discipline
Expectancy-and-Edge — the master equation $E=pW-(1-p)L-c$
Trend-Following-vs-Mean-Reversion — setups sit on both sides

Concept Map

Hinglish (regional understanding)

Intuition Hinglish mein samjho

Scalping ka matlab hai bahut chhote-chhote profits, lekin baar-baar. Aap koi din bhar ka direction predict nahi kar rahe — aap sirf market ke micro-imbalances pakadte ho jo seconds/minutes me resolve ho jaate hain. Har trade ka edge chhota hota hai, par aap 30-50 baar karte ho, isliye total meaningful ban jaata hai. Setups jaise VWAP pullback, Opening-Range Breakout, aur round-number levels — yeh sab ek hi cheez dhoondte hain: aisa spot jahan buyers/sellers ka imbalance ho aur aapka stop sirf 2-3 ticks door ho.

Sabse important baat expectancy hai: $E = pW - (1-p)L - c$ . Yahan $c$ (spread + fees + slippage) scalping me bahut bada villain hai, kyunki aapka win $W$ khud chhota hota hai. Isliye 1:1 reward-risk pe aapko 50% se zyada, aur cost ke baad 55%+ win-rate chahiye. Iska seedha matlab: sasti execution, tight spread, high-liquidity stocks, aur limit orders use karo taaki spread pay karne ki jagah capture karo.

Sabse badi galti — "main fast in-out karta hoon isliye safe hoon" ya "meri win-rate high hai isliye profitable hoon". Nahi. Ek bhi loss jo aap cut nahi karte, woh 10 wins kha jaata hai kyunki wins chhote hain. Isliye hard stop pehle se set, aur ek daily loss limit rakho. Win-rate ki jagah expectancy $E$ track karo.

Yaad rakhne ka tareeka — SLICE: Spread tight, Liquidity high, Imbalance/setup present, Cost counted, Exit (stop+target) preset. Yeh checklist pass ho tabhi trade lo.

Test yourself — Trading Strategies

Connections