Building a Greeks Dashboard
A Greeks dashboard is the central nervous system of an options portfolio. It aggregates Greeks across all positions, providing a unified view of portfolio risk and opportunity. Professional traders monitor dashboards continuously—updating multiple times per second during market hours. These dashboards reveal hidden risks, guide rebalancing decisions, and answer the critical question: "What is my portfolio actually exposed to?"
Why Monitor Portfolio Greeks?
Risk Visibility: A portfolio with 0 delta looks "safe" but high gamma and short vega is actually risky. Large moves will hurt. IV spikes will hurt. A dashboard reveals these hidden risks instantly.
Rebalancing Triggers: When delta drifts from your target (say, +5 contracts worth), you know it's time to rehedge. When vega exceeds your comfort zone, you reduce volatility exposure. Dashboards let you set alerts for these conditions.
Opportunity Recognition: If vega is very negative (good short-vol position) and IV spikes suddenly, that's opportunity to buy protective calls or take profits. Dashboards help spot these moments.
Compliance & Reporting: Many firms must report portfolio Greeks to risk management committees. A proper dashboard provides auditable, real-time data.
Core Dashboard Metrics
1. Net Delta ($) The sum of deltas across all positions, multiplied by contract size (100) to get dollar exposure. A portfolio with +500 delta means it moves like owning 500 shares. If market drops 1%, you lose $500.
2. Delta-Dollar Exposure More intuitive than delta alone. Delta of +1.5 contracts = +$1,500 per 1% market move (on a $100 stock). This is how traders think about risk.
3. Net Gamma Sum of all gammas. If portfolio gamma is +50, then for every $1 the market moves, your delta changes by 50 (becomes more positive if market rises, more negative if it falls). High gamma = convexity = benefit from large moves.
4. Gamma-Dollar Exposure For a 2% market move (typical volatility), how much does gamma affect your delta? Gamma × 2% move = delta shift. A gamma of 50 with 2% move shifts delta by 1, changing exposure by $1,000. This shows how quickly your risk profile changes.
5. Net Theta ($) Daily profit or loss from time decay alone. Positive theta means time decay works in your favor (short positions dominate). Negative theta means time decay works against you (long positions dominate). This is your daily decay cost or benefit.
6. Daily Theta P&L (Predicted) What's the expected profit from theta today? If theta is -$200/day and the stock doesn't move, you lose $200 to time decay. This is the cost of holding long options.
7. Net Vega ($) Exposure to 1% change in IV. If vega is +5,000, a 1% IV increase = +$5,000 profit. A 1% IV decrease = -$5,000 loss. High positive vega = bet on IV rising. High negative vega = bet on IV falling.
8. Vega Exposure to Daily IV Moves What's a typical daily IV move? If 1-2% is average and your vega is +5,000, expect ±$5,000-10,000 P&L from daily IV swings alone.
Sample Portfolio Dashboard: 5 Positions
You're running a $50,000 account with 5 concurrent positions. Here's what your dashboard shows:
| Position | Type | Delta | Gamma | Theta (/day) | Vega |
|---|---|---|---|---|---|
| AAPL 185C (25 contracts) | Long Call | +12.5 | +35 | -$15.00 | +1,400 |
| MSFT 380P (10 contracts) | Long Put | -3.2 | +18 | -$8.50 | +650 |
| SPY 480 Call Spread (20 contracts) | Vertical | +8.0 | +25 | +$12.00 | +800 |
| NVDA 880/890 Iron Condor (5 contracts) | Iron Condor | -1.5 | -42 | +$22.50 | -900 |
| TLT 95 Long Straddle (15 contracts) | Long Straddle | +0.0 | +65 | -$18.00 | +2,100 |
| PORTFOLIO TOTAL | +15.8 | +101 | -$7.00 | +4,050 | |
Interpreting Your Portfolio
Delta +15.8: Your portfolio is slightly bullish. It moves like owning ~1,580 shares (on $100 stocks). If market drops 1%, you lose ~$1,580. You're betting slightly on higher prices.
Gamma +101: You're long gamma overall. As market rises, your delta becomes more positive (good). As market falls, your delta becomes more negative (hedge improves). A 1% move shifts your effective delta by about 1 contract.
Theta -$7/day: Your portfolio loses ~$7 per day to time decay (negative because you have more long options than short). This is the cost of your positions. Over 30 days, that's -$210.
Vega +4,050: You're long volatility. A 1% IV increase = +$4,050 profit. A 1% IV decrease = -$4,050 loss. You're betting IV will rise. This is a material bet.
Stress Testing and Scenarios
A professional dashboard includes scenario analysis:
Scenario 1: Market +2% Your portfolio gains +15.8 delta × 2 = +$3,160 from directional move. Gamma adds approximately +101 × 0.5 × 2² = +$202 (convexity benefit). Total: +$3,362 assuming IV unchanged.
Scenario 2: Market -2% Your portfolio loses -15.8 × 2 = -$3,160 directionally. Gamma helps by adding approximately +$202 (delta becomes less negative, improving performance). Total: -$2,958. Gamma made you $204 better on a down move.
Scenario 3: IV +2% Vega gain: +4,050 × 2 = +$8,100. Theta loss: -$7 × 1 day = -$7 (minimal). Total P&L: +$8,093. A volatility spike makes you big money.
Scenario 4: IV -2%, Market flat Vega loss: -4,050 × 2 = -$8,100. Theta gain: +$7 × 1 day (actually your theta is negative, so you lose theta too). Total: -$8,107. Volatility crush kills the portfolio.
Scenario 5: Earnings surprise (IV +3%, Market +5%) Directional: +15.8 × 5 = +$790. Gamma: +101 × 0.5 × 25 ≈ +$1,263. Vega: +4,050 × 3 = +$12,150. Total: +$14,203. A big move + vol spike is profitable.
Setting Rebalancing Triggers
Professional traders set alerts:
Delta Drift: "Alert if net delta exceeds +25 or goes below -5." If market moves 2%, your delta drifts. When it exceeds your target, rehedge.
Vega Limit: "Alert if net vega exceeds +5,000." If your long-vega position becomes too concentrated, reduce it to manage risk.
Theta Threshold: "Alert if net theta falls below -$50/day." If time decay becomes too punishing, reduce long positions or add short premium.
Gamma Exposure: "Alert if gamma exceeds 200 or falls below -150." High gamma near expiration can be dangerous; low (negative) gamma means short positions are underwater.
Dashboard Tools and Platforms
Professional Platforms: Bloomberg Terminal, Refinitiv Eikon, proprietary trading systems. These update Greeks in real-time, show aggregate risk, and allow scenario modeling.
Broker Platforms: TD Ameritrade ThinkOrSwim, Interactive Brokers, Tastytrade. These show Greeks for individual options and some aggregate portfolio Greeks.
Spreadsheet-Based: Many professional traders build custom dashboards in Excel using option pricing models or APIs. This gives maximum control and customization.
Retail Tools: Some apps like Unusual Whales or OptionStrat provide simplified Greek tracking for educational purposes.
Common Dashboard Mistakes
Ignoring Portfolio-Level Risk: Evaluating positions individually without seeing aggregate Greeks. A position might look good until you see it's correlated with 4 others.
Over-Relying on Greeks: Greeks assume Black-Scholes model assumptions. In reality, dividends, early exercise, liquidity, and gaps create real risks that Greeks don't fully capture.
Not Monitoring High-Gamma Periods: As expiration approaches, all Greeks accelerate. A position that was stable becomes volatile. Dashboards must update more frequently near expiration.
Confusing Greeks with P&L: A position with positive delta can still lose money if IV collapses faster than the directional gain compounds. Always view Greeks in context of market conditions.
Summary
A Greeks dashboard transforms an options portfolio from a collection of individual bets into a unified risk management system. By monitoring net delta, gamma, theta, and vega, you understand exactly what your portfolio is exposed to. Scenario analysis reveals how positions behave under different market conditions. Rebalancing triggers keep risk within acceptable bounds. Whether you're managing $5,000 or $500 million, the principle is the same: aggregate Greeks reveal portfolio truth and guide disciplined trading decisions.