Options Greeks Explained for DeFi

Options Greeks Explained for DeFi

The Greeks are essential metrics for understanding how option prices change. Whether trading on Lyra, Dopex, or any options protocol, the Greeks help you assess risk and select strategies.

What Are the Greeks?

Greeks measure option sensitivity to various factors:

• Delta: Price sensitivity
• Gamma: Delta's rate of change
• Theta: Time decay
• Vega: Volatility sensitivity
• Rho: Interest rate sensitivity (less relevant in crypto)

Delta: Direction Sensitivity

What Delta Measures

How much option price changes when underlying moves $1:

• Call Delta: 0 to +1
• Put Delta: 0 to -1

Delta Examples

ETH Call with 0.50 Delta:

• ETH rises $100 → Option rises ~$50
• ETH falls $100 → Option falls ~$50

Delta as Probability

Delta approximates probability of finishing ITM:

• 0.30 Delta ≈ 30% chance of expiring ITM
• 0.70 Delta ≈ 70% chance of expiring ITM

Using Delta

10 options × 0.50 Delta = 5 ETH equivalent exposure

To hedge 1 ETH long:

• Buy puts with -1 total Delta
• Or sell calls with +1 total Delta

Gamma: Delta's Acceleration

What Gamma Measures

How much Delta changes when underlying moves $1:

• Always positive for long options
• Highest for ATM options near expiration

Gamma Example

ETH Call:

• Delta: 0.50
• Gamma: 0.05
• If ETH rises $1: New Delta = 0.55

Gamma Risk

High gamma near expiration:

• Options become very sensitive
• Small moves = large P&L changes
• Critical for option sellers

Gamma Trading

• Long gamma: Profit from big moves
• Short gamma: Profit from stability

Theta: Time Decay

What Theta Measures

How much option value decreases per day:

• Always negative for long options
• Represents the cost of holding

Theta Example

Option with -$5 Theta:

• Loses $5 per day from time decay
• All else equal

Theta Characteristics

• Accelerates near expiration
• Highest for ATM options
• The premium seller's friend

Theta Strategy Implications

• Theta works against you
• Need price movement to profit
• Shorter expirations = faster decay

• Theta works for you
• Time passage = profit
• Earn premium as theta decays

Vega: Volatility Sensitivity

What Vega Measures

How much option price changes with 1% IV change:

• Always positive for long options
• Critical in volatile crypto markets

Vega Example

Option with $2 Vega:

• IV rises 1% → Option rises $2
• IV falls 1% → Option falls $2

Volatility Impact

Crypto IV often ranges 50-150%:

• High IV = Expensive options
• Low IV = Cheap options
• IV crush after events

Vega Strategies

• Buy options before expected volatility
• Profit when IV increases
• Pre-announcement plays

• Sell options when IV is high
• Profit when IV decreases
• Post-event plays

Greeks in Practice

Reading an Options Chain

Typical display shows:

• Strike, Bid/Ask, Delta, Gamma, Theta, Vega, IV
• Use Greeks to compare options

Strategy Selection

• High Delta: More directional exposure
• Watch Theta: Time works against
• Check Vega: IV crush risk

• Collect Theta decay
• Manage Delta exposure
• Short Vega: Prefer high IV entry

• Delta neutral (call + put)
• Long Gamma: Profit from moves
• Long Vega: Profit from IV rise

Greeks for DeFi Protocols

Lyra

• Displays all Greeks
• AMM prices based on Greeks
• Dynamic fee adjustment

Dopex

• Greeks shown for options
• SSOV strategies use Greeks
• Automated management

Premia

• Full Greeks display
• Greeks-based pricing
• Portfolio Greeks tracking

Practical Tips

For Beginners

1. Focus on Delta first
2. Understand Theta's impact
3. Learn Vega before trading volatile periods

For Intermediate

1. Manage portfolio Greeks
2. Hedge specific Greeks
3. Trade volatility directly

For Advanced

1. Delta-neutral strategies
2. Gamma scalping
3. Volatility arbitrage

Analyze options Greeks across DeFi protocols on Fensory.