Understand strategy selection by view & IV — Hinglish notes

5.4.13 · Stock-Market › Options Strategies

IV ka direction jitna importance kyun hota hai?

Formula IV Rank — "high vs low" number nikalna

Hume ek tarika chahiye yeh kehne ka ki "is stock ke liye IV high hai". Raw IV 40% ek bond ETF ke liye bahut bada hai lekin ek meme stock ke liye bahut chhota. Isliye stock ki apni 1-saal ki range ke against normalise karo.

Pichhle ek saal mein:

$I V_{n o w}$ = current implied volatility
$I V_{min}, I V_{ma x}$ = window mein sabse low/highest IV

Hume $[0, 1]$ mein ek number chahiye jo floor par $0$ ho aur ceiling par $1$ . Natural linear map yeh hai: $IV Rank = \frac{I V _{n o w} - I V _{min}}{I V _{ma x} - I V _{min}}$ Yeh form kyun? Floor subtract karo taaki range ka bottom $0$ par map ho; span se divide karo taaki top $1$ par map ho. Yeh sirf ek min–max rescaling hai.

IV Rank $> 0.5$ → "high IV" → premium selling ki taraf lean karo (net short options).
IV Rank $< 0.5$ → "low IV" → premium buying ki taraf lean karo (net long options).

Dono axes ko combine kaise karein

Figure — Understand strategy selection by view & IV

Formula Selection matrix (ise cold yaad karo)

View \ IV	Low IV (buy premium)	High IV (sell premium)
Bullish	Long Call / Bull Call (debit) spread	Short Put / Bull Put (credit) spread
Bearish	Long Put / Bear Put (debit) spread	Short Call / Bear Call (credit) spread
Neutral	Long Straddle/Strangle (buy vol)	Iron Condor / Short Straddle (sell vol)

Diagonal symmetry kyun hai? Bullish-low-IV aur Bullish-high-IV dono price rise hone par profit karte hain, lekin pehla long vega hai (chahta hai IV upar jaye) aur doosra short vega hai (chahta hai IV neeche jaye). Same view, opposite volatility bet.

Worked examples

Common mistake Classic errors ko steel-man karo

"Main bullish hoon, isliye hamesha calls khareedunga." Kyun sahi lagta hai: Long calls sabse simple tarika hai upside express karne ka aur inki risk capped hoti hai. Clean lagta hai. Fix: Agar IV Rank high hai, call overpriced hai; IV crush tumhe loss de sakta hai ek aisi stock par jo upar gayi. High IV mein tum premium bechte ho (short put / bull put spread) taaki vol tumhare liye kaam kare.

"High premium = high reward, isliye selling hamesha better hai." Kyun sahi lagta hai: Mota credit free money jaisa lagta hai. Fix: High premium matlab high expected movement — market bada risk price kar rahi hai. Undefined-risk sells (naked options) blast ho sakte hain. Defined-risk spreads use karo (iron condor, credit spread) taaki tail move tumhe barbad na kare.

"IV 40% hai toh high hai." Kyun sahi lagta hai: 40% bada lagta hai. Fix: "High" sirf stock ki apni history ke against meaningful hai — raw number nahi, IV Rank/Percentile use karo.

Recall Feynman: 12-saal ke bacche ko explain karo

Option kharidna ek chhata kharidne jaisa hai. View tumhara guess hai ki baarish hogi ki nahi (price upar/neeche). IV yeh hai ki aaj dukaan chhate ke liye kitna charge kar rahi hai. Agar sab storm se dare hue hain, chhate mehnge hain (high IV) — smart kaam yeh hai ki tum woh dukaan bano jo chhate bech rahi hai. Agar aasman saaf hai aur chhate bilkul saste hain (low IV), tum kharid lo kyunki kuch bhi nahi lagta. Isliye hamesha do sawal poocho: "Baarish hogi kya?" AUR "Kya chhate aaj saste hain ya mehnge?"

Flashcards

Har option strategy ko define karne wale do independent axes kya hain?

Direction (market view) aur Volatility (IV regime — cheap vs expensive).

IV Rank ka formula

IV Rank = \frac{I V _{n o w} - I V _{min}}{I V _{ma x} - I V _{min}}

ek look-back window pe (usually 1 year).

IV Rank 0.85 ka matlab kya action bias hai?

High IV → net SELLER of premium bano (short vega, theta collect karo).

IV Rank 0.15 ka matlab kya action bias hai?

Low IV → net BUYER of premium bano (long vega, sasta leverage).

Bullish + Low IV → best structure?

Long call / Bull Call debit spread (long vega, sasta leverage).

Bullish + High IV → best structure?

Short put / Bull Put credit spread (short vega, fat premium collect karo).

Bearish + High IV → best structure?

Short call / Bear Call credit spread.

Neutral + High IV → best structure?

Iron Condor ya Short Straddle (vol becho, IV crush + theta se profit karo).

Neutral + Low IV → best structure?

Long Straddle/Strangle (vol kharedo, expansion se profit karo).

IV crush kya hai aur long calls ko kyun hurt karta hai?

Event ke baad IV mein sharp drop; negative vega se option prices girte hain, isliye long call paisa khо sakta hai chahe stock upar gaya ho.

Raw IV (jaise 40%) "high" kehne ke liye kaafi kyun nahi hai?

"High" stock ki apni historical range ke relative meaningful hai — IV Rank/Percentile use karo, raw number nahi.

Same bullish view, low vs high IV — kya flip hota hai?

Vega ka sign: low IV → long vega (chahte ho IV upar jaye); high IV → short vega (chahte ho IV neeche jaye).

High IV mein naked options ki jagah defined-risk credit spreads kyun prefer karein?

High premium bade expected moves signal karta hai; defined-risk spreads tail-risk loss cap karte hain.

Connections

Implied Volatility — woh input jo IV axis define karta hai.
IV Rank vs IV Percentile — "high vs low" measure kaise karein.
Option Greeks — Vega — kyun buying/selling IV changes par react karta hai.
Option Greeks — Theta — time decay premium sellers ko favour karta hai.
Bull Call Spread / Bull Put Spread — IV ke hisaab se bullish structures.
Iron Condor / Long Straddle — IV ke hisaab se neutral structures.
IV Crush — earnings trap jisse yeh note bachata hai.