Understand VWAP-based intraday strategies — Hinglish notes

4.6.14 · Stock-Market › Trading Strategies

VWAP exist kyun karta hai?

YEH kaunsi problem solve karta hai: Prices ka simple average (jaise har 1-minute close ka average) ek aisi candle ko — jisme 1 million shares hain — waise hi treat karta hai jaise 100 shares waali candle ko. Yeh misleading hai — 1-million-share candle wahin hai jahan real money haath badle. VWAP isko fix karta hai har price ko uski volume se weight karke, taaki yeh reflect kare ki bulk participation kahan hua.

Institutions kyun care karte hain: Ek fund jo 500,000 shares khareedta hai, order ek baar mein nahi daal sakta. Unki execution desk ko grade kiya jaata hai is basis par ki unhone VWAP par ya usse neeche kharida (buy ke liye) — VWAP ko beat karna matlab unhone better-than-average fill paayi. Isse VWAP ek self-reinforcing magnet ban jaata hai: sab isko dekhte hain, isliye price often iske taraf revert hoti hai.

VWAP ko scratch se derive karna

Hum chahte hain din bhar mein per share pay ki gayi average price. Agar $N$ trades hue:

Trade $i$ price $p_{i}$ par hua jiske saath volume $v_{i}$ tha.
Trade $i$ par kharch hua paisa = $p_{i} \cdot v_{i}$ .
Total kharch hua paisa = $\sum_{i} p_{i} v_{i}$ .
Total shares = $\sum_{i} v_{i}$ .

Average cost per share = total money ÷ total shares:

Trades ki count se kyun nahi, total volume se divide kyun? Kyunki hum per-share average chahte hain. Bars ki number se divide karne par har bar ko equal weight milegi regardless of size — bilkul wohi bias jo hum remove kar rahe hain.

Typical price $(H + L + C) /3$ kyun? Ek single bar ek range mein trade hua, ek price par nahi. $(H + L + C) /3$ bar ke centre of mass ka ek sasta estimate hai kyunki hamare paas har tick nahi hai.

VWAP Bands (standard-deviation envelopes)

Strategies banane ke liye hum bands add karte hain, Bollinger Bands ki tarah lekin VWAP ke around:

$σ = \frac{\sum _{i} v _{i} ( p _{i} - VWAP ) ^{2}}{\sum _{i} v _{i}}$

Bands $VWAP \pm k σ$ par kheenchi jaati hain (often $k = 1, 2$ ). Price ka band ke bahar jaana = statistically stretched → mean-reversion candidate.

Figure — Understand VWAP-based intraday strategies

Core Strategies

Worked Examples

Worked example Example 1 — Haath se VWAP compute karna

Ek stock par teen 5-min bars:

Bar	H	L	C	Volume
1	102	98	100	1000
2	106	104	105	500
3	101	99	100	3000

Step 1 — typical prices. Kyun? Humein har bar ke liye ek representative price chahiye. $p_{1} = (102 + 98 + 100) /3 = 100$ , $p_{2} = (106 + 104 + 105) /3 = 105$ , $p_{3} = (101 + 99 + 100) /3 = 100$ .

Step 2 — $p_{i} v_{i}$ . Kyun? Yeh har bar par kharch hua paisa hai. $100 \cdot 1000 = 100000$ , $105 \cdot 500 = 52500$ , $100 \cdot 3000 = 300000$ . Sum $= 452500$ .

Step 3 — total volume. $1000 + 500 + 3000 = 4500$ .

Step 4 — divide karo. $VWAP = 452500/4500 = 100.56$ .

Notice karo: Bar 2 ne 105 par trade kiya lekin uska volume tiny tha, isliye VWAP barely 100 se upar gaya. Bar 3 ka huge 3000-volume 100 par VWAP ko neeche anchor kiya. Volume weighting ka poora point yahi hai.

Common Mistakes

Recall Feynman: ek 12-saal ke bachche ko explain karo

Socho ek poore din mein bachche candy khareed rahe hain. Kuch 1 candy khareedते hain, kuch 100. Agar tum sirf labels par prices average karo, toh ek bachcha jo 1 mehengi candy khareedta hai woh utna hi count karega jitna woh bachcha jo 100 sasti candies khareedta hai — unfair! VWAP iske bajaaye poochhta hai: "Sabne jo total paisa kharch kiya woh jodo, saari khareedee gayi candies se divide karo." Isse din ki real average candy price milti hai. Traders phir kehte hain: agar candy us fair price ke upar bik rahi hai, toh thodi mehengi hai (shaayad wapas neeche aaye); neeche hai toh sasti hai. Aur kyunki sab ek hi fair-price line use karte hain, prices magnet ki tarah iske taraf khinchti rehti hain.

Active Recall

VWAP ka full form kya hai aur yeh kya measure karta hai?

Volume-Weighted Average Price — aaj traded har share ki average price per share, har price ko uske volume se weight karke.

VWAP formula likho.

VWAP = \frac{\sum p _{i} v _{i}}{\sum v _{i}}

, jahaan

p_{i} = (H_{i} + L_{i} + C_{i}) /3

, open se cumulative.

Volume se weight kyun karte hain, bar prices average kyun nahi karte?

True per-share average paane ke liye; equal-weighting low-liquidity bars ki taraf bias karta hai jo reflect nahi karti jahan real money trade hua.

Din bhar VWAP "stickier" kyun hota jaata hai?

Denominator

\sum v_{i}

bada hota jaata hai, isliye har naya bar cumulative average ko barely move karta hai.

VWAP ke upar price ka matlab kya hai?

Buyers in control hain (average buyer premium pay kar raha hai); bullish bias.

Reversion strategy: entry, target, kab use karo?

Range mein: lower band par buy karo / upper band par short karo; target = VWAP. Non-trending markets mein use karo.

Trend strategy mein VWAP kaise use hota hai?

Dynamic support/resistance ki tarah — uptrend mein VWAP tak pullbacks buy karo, downtrend mein VWAP tak rallies short karo.

Regular VWAP multi-day charts par useless kyun hai?

Yeh har session reset hota hai; sirf intraday participation measure karta hai. Anchored VWAP use karo instead.

VWAP bands kaise banate hain?

VWAP \pm k σ

jahaan

σ

VWAP ke around typical price ka volume-weighted std hai.

Early-morning VWAP unreliable kyun hota hai?

Tiny cumulative volume isse jumpy banata hai; ek single large trade isse swing kar sakta hai.

Connections

Volume analysis — VWAP price ka volume-weighted derivative hai.
Bollinger Bands — same $\pm k σ$ envelope idea, alag centre line.
Mean Reversion vs Trend Following — VWAP dono regimes ko feed karta hai.
Anchored VWAP — multi-day generalization.
Support and Resistance — VWAP dynamic S/R ki tarah kaam karta hai.
Institutional Order Execution — VWAP benchmark kyun hai yeh samajhne ke liye.
Typical Price (HLC/3) — per-bar price input.