HEDGE
Risk Management · Portfolio Theory

Protecting What
You've Built

Markets go down. Always have, always will. Understanding how to defend a portfolio against sharp declines — without killing your upside — is one of the most valuable skills in finance.

−57%
S&P 500 peak-to-trough, 2008–09 crisis
−34%
S&P 500 crash in just 33 days, Feb–Mar 2020
4×
Longer to recover if you ride a 50% loss vs. hedging it
1–3%
Typical annual cost of systematic put protection
Six Core Strategies

Your Downside Defense Toolkit

Each strategy trades off protection cost, upside retention, and complexity. Click any card to explore in depth.

01 / 06
🛡️
Protective Put
Buy a put option against a stock you own. Establishes a floor below which your losses cannot grow.
Put Options
02 / 06
🔗
Collar Strategy
Buy a put + sell a call. The call premium offsets the put cost, creating a no-cost (or low-cost) range.
Options Combo
03 / 06
📊
Bear Put Spread
Buy a higher-strike put, sell a lower-strike put. Caps both your protection and your cost.
Vertical Spread
04 / 06
🌍
Diversification
Combining assets with low or negative correlations naturally smooths portfolio volatility.
Asset Allocation
05 / 06
⚖️
Inverse ETFs & Futures
Hold instruments that rise when the market falls. Think VIX calls, S&P futures, or SH/SPXS ETFs.
Active Hedge
06 / 06
🔒
Stop-Loss Orders
Automatically sell a position when it falls to a trigger price. Simple, but vulnerable to gaps and whipsaws.
Risk Rules
Interactive Simulator

See the Hedge in Action

Adjust your portfolio size and hedge parameters. Choose a market scenario to see how each strategy performs.

Protective Put Simulator
Live Model
Portfolio Value $500,000
Protection Level 5% OTM
Put Premium 2.0%
Market Scenario
Unhedged
With Protective Put
Breakeven
Portfolio Value
$500,000
Unhedged P&L
$0
Hedged P&L
$0
Hedge Savings
$0
Strategy Comparison at a Glance
Strategy Cost Upside Cap? Complexity Best For
Protective Put High (annual premium) No — unlimited upside Low Short-term event risk (earnings, macro)
Collar Low to zero (net) Yes — call caps gains Medium Long-term holders who will sacrifice upside
Bear Put Spread Medium (reduced premium) Partially — protection capped too Medium Budget-conscious protection in defined range
Diversification Very low (rebalancing) No Low Long-term structural risk reduction
Inverse ETFs / Futures High (daily decay, slippage) No — profitable in crashes High Active traders with tactical bearish view
Stop-Loss Orders Near zero No Low Retail investors; simple rule-based discipline
Historical Stress Tests

What Happened in Real Crashes

A $100,000 portfolio — hedged vs. unhedged — across three of the worst modern drawdowns.

🏦
Global Financial Crisis
2007–2009
Market peak-to-trough−56.8%
Unhedged $100K−$56,800
Protective Put (5% OTM)−$14,200
Collar (0–10% range)−$10,000
Diversified (60/40)−$22,000
Loss Reduction vs. Unhedged
Protective Put: 75%
60/40 Diversify: 61%
🦠
COVID-19 Crash
Feb–Mar 2020
Market peak-to-trough−33.9%
Unhedged $100K−$33,900
Protective Put (5% OTM)−$9,500
Collar (0–10% range)−$8,000
Diversified (60/40)−$16,000
Loss Reduction vs. Unhedged
Protective Put: 72%
60/40 Diversify: 53%
📈
Fed Rate Hike Bear Market
2022
Market peak-to-trough−25.4%
Unhedged $100K−$25,400
Protective Put (5% OTM)−$8,100
Collar (0–10% range)−$7,000
Diversified (60/40)−$16,100
Loss Reduction vs. Unhedged
Protective Put: 68%
60/40 Diversify: 37%
⚖️
Connecting to Put-Call Parity
Recall from your options module that puts and calls on the same underlying are linked. This has a direct implication for hedging:
S + P = C + Ke−rT
Stock + Put = Call + PV(Strike)
A protective put (S + P) is equivalent to a long call plus a risk-free bond. This means buying portfolio insurance is economically identical to holding a leveraged bullish position — you're paying for the optionality in both cases. When puts are expensive (high implied volatility), hedging is costly. When IV is low, it's a cheaper time to buy protection.
Knowledge Check

Test Your Understanding

Four questions — click an answer to see instant feedback.

1. You own 200 shares of SPY at $520. You buy 2 put contracts at the $500 strike for $4.50 each. What is your maximum loss on the stock position (ignoring premium)?
A. $104,000 (full stock value)
B. $4,000 (from $520 down to $500)
C. $900 (just the premium)
D. Unlimited
2. A collar involves buying a put and selling a call on the same underlying. What does the sold call do to your position?
A. Increases your downside protection
B. Caps your upside and offsets the put cost
C. Eliminates all portfolio risk
D. Increases your hedging cost
3. When implied volatility (IV) is high — say, during a market crisis — what happens to the cost of buying protective puts?
A. Puts become cheaper because the market is pricing in more movement
B. Puts become more expensive as higher IV inflates premiums
C. Put prices are unaffected by IV
D. Puts become cheaper because they are likely to be ITM
4. A bear put spread involves buying a put at $100 and selling a put at $85 on the same stock. What is the maximum profit on this spread?
A. Unlimited — as the stock falls to zero
B. $15 per share (the spread width)
C. $15 minus the net premium paid
D. Equal to the net premium paid