How do you construct an equity collar and what are the tradeoffs?

An equity collar is one of the most practical hedging strategies in derivatives. It's widely used by corporate executives, concentrated stock holders, and institutional investors. The key tradeoff is accepting capped upside in exchange for cheap (or free) downside protection.

Collar Construction

• Own the underlying stock
• Buy an OTM put (sets the floor)
• Sell an OTM call (sets the ceiling, generates premium to offset put cost)

Detailed Example — Valmont Industries Executive Hedge

CEO of Valmont Industries holds 50,000 shares at $100/share ($5M position). She wants to protect against a significant decline but is restricted from selling shares for 12 months.

Collar construction (12-month options):

• Buy $90 put: Premium = $3.50/share ($175,000 total)
• Sell $115 call: Premium = $3.20/share ($160,000 total)
• Net cost: $0.30/share ($15,000 total) = 0.3% of the position

Payoff at Expiration:

The CEO's effective range is $90-$115 (a -10% to +15% range) for just $0.30/share.

Zero-Cost Collar:

By adjusting strikes, you can make the put premium exactly equal the call premium:

• Widen the put strike lower (cheaper protection) and/or
• Lower the call strike (collect more premium but cap upside sooner)

For Valmont: A $88 put / $112 call combination might produce a zero-cost collar.

Why Collars Are Popular:

1. Low cost — The call premium finances most or all of the put
2. Regulatory-friendly — Often permitted even when outright selling isn't (executive lock-up periods)
3. Defined risk — Both maximum gain and maximum loss are known upfront
4. Tax deferral — In many jurisdictions, collars don't trigger a taxable sale

Tradeoffs and Risks:

1. Capped upside — If the stock surges, you don't participate above the call strike
2. Opportunity cost — If the stock stays flat, you paid $0.30 for nothing
3. Assignment risk — American-style calls may be exercised early around ex-dividend dates
4. Tax complexity — The IRS may treat very tight collars as constructive sales

Exam Tip: CFA Level II may present collar parameters and ask for the maximum gain, maximum loss, or breakeven. Maximum gain = Call strike - Stock price - Net premium. Maximum loss = Stock price - Put strike + Net premium.

Practice collar strategies in our CFA Level II Derivatives question bank.