Learn about OBV and volume indicators — Hinglish notes

3.4.12 · Stock-Market › Indicators & Oscillators

Volume Indicators Kyun Matter Karte Hain

Price batata hai kya hua. Volume batata hai kitna conviction us move ke peeche tha.

High volume + price rise = Strong buying pressure, sustainable trend
High volume + price fall = Strong selling pressure, momentum breakdown
Low volume move = Weak conviction, likely reversal ya consolidation

Volume indicators ka jawaab: "Kya yeh move real hai, ya ek head-fake?"

On-Balance Volume (OBV): First Principles se Derivation

Hum Kaun Si Problem Solve Kar Rahe Hain?

Raw volume data noisy hota hai—kya aaj ke 10M shares buying indicate karte hain ya selling? Hume ek cumulative metric chahiye jo volume ko har roz jeetnewali side ko assign kare.

Construction

Yeh observations se shuru karo:

Agar close > previous close → buyers jeete → volume tha buying pressure
Agar close < previous close → sellers jeete → volume tha selling pressure
Agar close = previous close → koi winner nahi → volume neutral hai (ignore karo)

Definition: OBV signed volumes ka running sum hai (share units mein).

OBV_{t} = OBV_{t - 1} + ⎩ ⎨ ⎧ + V_{t} - V_{t} 0 if C_{t} > C_{t - 1} if C_{t} < C_{t - 1} if C_{t} = C_{t - 1}

Jahaan:

$C_{t}$ = time $t$ par closing price
$V_{t}$ = time $t$ par trade hua volume (shares ki number)
$OBV_{0}$ = 0 (arbitrary starting point; sirf direction matter karta hai)

Yeh kyun kaam karta hai: Volume fuel hai. OBV track karta hai ki kaun si team (bulls ya bears) zyada fuel burn kar rahi hai. OBV ka absolute number meaningless hai—jo matter karta hai woh hai trend aur divergences.

Key OBV Patterns

1. Confirmation

2. Divergence (Sabse Powerful Signal)

Worked example Rising Price + Falling OBV (Bearish Divergence)

Setup: Stock ₹100 → ₹110 → ₹115 rise karta hai, lekin OBV peak karta hai (jis din price ₹110 hit ki thi us din +9M shares par) aur phir decline karta hai jabki price climb karti rehti hai.

Yeh kyun hota hai:

Price abhi bhi upar ja rahi hai, lekin down-days par volume badh raha hai
Smart money distribute kar raha hai (strength mein sell kar raha hai)
Retail top buy kar raha hai, lekin har din kam conviction ke saath

Step-by-step OBV change (OBV column millions of shares mein): | Day | Close | Volume | Direction | OBV Change | Running OBV | |---|-------|-----------|------------|----------| | 1 | ₹100 | 2M | — | — | 0 | | 2 | ₹105 | 3M | Up | +3M | +3M | | 3 | ₹108 | 2M | Up | +2M | +5M | | 4 | ₹110 | 4M | Up | +4M | +9M | | 5 | ₹109 | 5M | Down | −5M | +4M | | 6 | ₹112 | 2M | Up | +2M | +6M | | 7 | ₹115 | 1M | Up | +1M | +7M | Yeh step kyun? Day 5 ka large volume ek down-day par (5M shares) chhote up-days (2M, 1M) ko overwhelm kar deta hai. OBV +9M shares par peak kiya (Day 4 par, jab price ₹110 thi), lekin price ₹115 tak chalti rahi jabki OBV +7M tak gir gaya—classic distribution. Note: +9M ek volume total hai, rupee value nahi.

Action: Longs exit karo, reversal ke liye taiyar ho jao. Divergence aksar 5–15% correction se pehle aata hai.

Doosre Volume Indicators

Volume-Weighted Average Price (VWAP)

Kyun matter karta hai: Institutions VWAP ke paas execute karne ki koshish karte hain taaki market impact minimize ho. Agar price VWAP se baar baar bounce kare, toh yeh dynamic support/resistance ki tarah act kar raha hai.

Chaikin Money Flow (CMF)

Bar ke andar price location aur volume ko combine karta hai:

$CMF = \frac{\sum _{i = 1}^{n} [ \frac{( C _{i} - L _{i} ) - ( H _{i} - C _{i} )}{H _{i} - L _{i}} \times V _{i} ]}{\sum _{i = 1}^{n} V _{i}}$

Jahaan $H, L, C$ = high, low, close.

Intuition: Agar close high ke paas hai, toh buyers ne din control kiya—us din ka volume ek positive number se multiply karo. Agar close low ke paas hai, toh sellers ne control kiya—negative se multiply karo.

Range: −1 se +1 tak. 0 ke upar = accumulation, neeche = distribution.

Diagram: OBV Divergence in Action

Figure — Learn about OBV and volume indicators

Jo tum dekh rahe ho:

Top panel: Price higher highs bana raha hai
Bottom panel: OBV (share units mein) lower highs bana raha hai → bearish divergence → price reverse ho jaati hai

Common Mistakes

Active Recall Drills

Recall Feynman Explanation (Ek 12-Saal-Ke Bacche Ko Samjhao)

Imagine karo tum aur tumhare dost vote kar rahe ho ki cricket khelna hai ya padhna hai. Har roz tum votes count karte ho.

Agar cricket jeete, toh saare votes "cricket score" mein add karo.
Agar study jeete, toh saare votes "cricket score" se subtract karo.

Ek hafte baad, cricket score +30 hai. Matlab cricket overall jeet raha hai—bhaale study ne kuch din jeete hon, cricket ke total votes zyada the.

OBV stocks ke saath yahi karta hai: agar price upar jaye, toh hum us din trade hue shares ki number add karte hain (buyers jeete). Agar price neeche jaye, toh un shares ko subtract karte hain (sellers jeete). Running total dikhata hai ki time ke saath kaun battle jeet raha hai—buyers ya sellers. (Hum shares count karte hain, rupees nahi.)

Chhupa hua hissa yeh hai: kabhi kabhi price upar jaती rehti hai, lekin cricket score badhna band ho jaata hai. Matlab kam log cricket ke liye vote kar rahe hain bhaale woh abhi bhi "jeet" raha ho. Yeh sign hai ki cricket jaldi haar sakta hai!

Mnemonic & Memory Aids

Connections

Price-Action-Basics – Volume price moves ko confirm karta hai
Trend-Following-Strategies – OBV trend strength confirm karta hai
Support-and-Resistance – Divergence aksar key levels par hoti hai
Market-Breadth-Indicators – OBV single-stock analog hai Advance-Decline line ka
Accumulation-Distribution-Line – OBV jaisa hi lekin intraday price location weighs karta hai
Money-Flow-Index – OBV ke unlike, MFI rupee/price-weighted volume flow hai
MACD – Dono divergences dhundhte hain; stronger signals ke liye inhe combine karo

#flashcards/stock-market

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

On-Balance Volume. Yeh ek cumulative indicator hai jo up-days par share volume add karta hai aur down-days par share volume subtract karta hai taaki volume flow ki direction reveal ho (share-based, rupee-based nahi).

Tum day

t

ke liye OBV kaise calculate karte ho?

OBV_{t} = OBV_{t - 1} + sign (C_{t} - C_{t - 1}) \cdot V_{t}

. Volume add karo agar close previous close se zyada ho, subtract karo agar kam ho, ignore karo agar same ho.

Bearish OBV divergence kya hoti hai?

Price higher highs banata hai, lekin OBV lower highs banata hai. Yeh signal karta hai ki down-days par volume badh raha hai—smart money dwara distribution. Aksar reversal se pehle aata hai.

Bullish OBV divergence kya hoti hai?

Price lower lows banata hai, lekin OBV higher lows banata hai. Accumulation indicate karta hai—selling pressure exhaust ho gayi hai, buying volume secretly badh raha hai.

OBV ka absolute number meaningless kyun hota hai?

OBV ek arbitrary value se start hota hai (usually 0). Sirf trend direction aur divergences recent OBV history ke relative matter karte hain, magnitude nahi.

Kya OBV rupee/dollar money flow ka measure hai?

Nahi. OBV sirf share volume sum karta hai—yeh har share ki price ignore karta hai. Price-weighted (money) flow ke liye, VWAP ya Money Flow Index (MFI) use karo.

Flat price day par high volume kya indicate karta hai?

Indecision ya ek key support/resistance level par battle. Aksar breakout ya breakdown se pehle aata hai—koi side abhi jeeti nahi, lekin tension build ho rahi hai.

VWAP kya hai aur institutions kyun care karte hain?

Volume-Weighted Average Price. Yeh volume se weighted average price hai. Institutions ise benchmark ki tarah use karte hain execution quality measure karne ke liye—VWAP ke paas trading market impact minimize karti hai.

Kya tumhe bearish OBV divergence dekhte hi immediately short karna chahiye?

Nahi. Divergence days/weeks tak persist kar sakti hai. Short enter karne se pehle price confirmation ka wait karo jaise support ke neeche breakdown ya bearish reversal candle.