All the Greeks together — playground
Move the price, the clock and the volatility yourself and watch the premium and Greeks react.
Your options lab
Below is an interactive pricing model for the NIFTY 22400 call and put. Move the three sliders and watch everything update. There's no wrong move — break it, reset it, try again.
Try it yourself
22,400 Call
ATM₹175.12
- Delta
- 0.53
- Gamma
- 0.00099
- Theta
- -13.54
- Vega
- 12.34
22,400 Put
ATM₹147.21
- Delta
- -0.47
- Gamma
- 0.00099
- Theta
- -9.56
- Vega
- 12.34
Five experiments to try
Do these in order. Each one should give you a small "aha".
- 1
Drag the days slider from 7 down to 0
Both premiums shrink even though NIFTY didn’t move. Watch theta get bigger (more negative) as you approach expiry — the melt speeds up. At 0 days only intrinsic value is left.
- 2
Reset. Move NIFTY to 22,600
The call gains, the put loses. The call’s delta rises toward 1, the put’s toward 0. The call’s green (intrinsic) bar appears.
- 3
Now set days to 1 and move NIFTY between 22,300 and 22,500
Delta jumps around wildly near the strike. That is gamma at its peak — the reason expiry days are so dramatic.
- 4
Reset. Drag volatility from 13% to 25%
Both the call AND the put get much more expensive, with no change in NIFTY. That’s vega — and the blue time-value bar is what grew.
- 5
Set NIFTY far away (22,000) and days to 30
The OTM call is cheap and almost all blue (time value). Its delta is small: it barely reacts to NIFTY. Lottery ticket territory.
The Greeks cheat sheet
| Greek | Measures | Buyer | Seller | Largest when… |
|---|---|---|---|---|
| Delta | Move per 1-point NIFTY move | Call +, put − | Call −, put + | Deep ITM (close to ±1) |
| Gamma | Change in delta per point | + (helps) | − (hurts) | ATM, close to expiry |
| Theta | Value lost per day | − (costs) | + (earns) | ATM, close to expiry |
| Vega | Move per 1% change in IV | + (helps) | − (hurts) | ATM, far from expiry |
The big trade-off
Look at the buyer and seller columns. They're mirror images, and there's no free lunch:
Option buyer
- Long gamma: big moves are your friend.
- Long vega: rising fear is your friend.
- Pays theta every day for those benefits.
Option seller
- Collects theta every day.
- Short gamma: big moves hurt, fast.
- Short vega: a panic hurts even before the price moves.
Every strategy in the next module is a different way of choosing which of these forces you want on your side — and how much of the opposite you're willing to carry.
Quick check
You expect NIFTY to sit quietly in a range for the next week and IV to drift lower. Which Greeks do you want on your side?