Collar Option Strategy Singapore: Protecting Stock Gains Without Paying Full Price for Insurance
How Singapore investors combine a protective put and a covered call to hedge an existing stock position at little or no net cost.
Last updated: October 2026
A collar is an options strategy where an investor who owns shares simultaneously buys a protective put (to limit downside) and sells a covered call (to help fund the put’s cost), creating a defined range — a floor and a ceiling — for the position’s value until expiry.
Not financial advice. All figures for educational reference only. Data as at October 2026.
Key Takeaways
- A collar combines an owned stock position, a protective put (downside floor), and a covered call (funds the put, sets an upside ceiling).
- A ‘zero-cost collar’ is structured so the premium received from the call roughly offsets the premium paid for the put, making the hedge nearly free to put on.
- The strategy caps both potential losses and potential gains for the duration of the options, trading away upside for downside protection.
- Collars are commonly used by Singapore investors holding a large concentrated position — such as employer stock from an ESOP — who want to protect gains without selling and triggering a taxable or liquidity event.
- Unlike a simple protective put, a collar reduces or eliminates the net cost of insurance by giving up some upside potential.
What Is Collar Option Strategy?
A collar is a hedging strategy, not primarily an income or speculative strategy, designed to protect an existing stock holding from a significant decline while minimising the out-of-pocket cost of that protection. It is built on top of a stock position the investor already owns, rather than being a standalone options trade.
The strategy has two components layered on the existing stock position: buying a put option below the current price, which acts as insurance by giving the investor the right to sell at the strike price no matter how far the stock falls; and selling a call option above the current price, which generates premium income that is used to offset — partially or fully — the cost of the put.
When the call premium received roughly equals the put premium paid, the structure is called a “zero-cost collar,” since there is little to no net cash outlay to establish the hedge. The trade-off is that the investor caps their potential upside at the call strike for the duration of the position, in exchange for that nearly free downside protection.
How Does It Work in Singapore?
Collars are particularly relevant for Singapore investors or professionals holding concentrated single-stock positions — most commonly employees with a large allocation of employer stock from an Employee Stock Ownership Plan (ESOP) or Restricted Stock Units (RSUs) who want to protect unrealised gains without triggering a sale (and the associated tax or lock-up restrictions) before a planned vesting or liquidity window.
Example on a hypothetical USD 150 stock position: an investor buys a protective put at a USD 140 strike for USD 4.50 and sells a covered call at a USD 165 strike for USD 4.20, for a net cost of just USD 0.30 per share (USD 30 per 100-share collar) — a near-zero-cost hedge. Their position value is now effectively locked between USD 140 and USD 165 until the options expire, regardless of how far the stock moves outside that range.
| Stock Price at Expiry | Collared Outcome |
|---|---|
| Above USD 165 (call strike) | Shares called away at USD 165; upside capped there |
| Between USD 140 and USD 165 | Both options expire worthless; keep shares at market value |
| Below USD 140 (put strike) | Put protects value; can sell at USD 140 regardless of market price |
Source: Standard options collar mechanics, illustrative figures.
Worked Example
A Singapore-based professional holds 1,000 shares of their US employer’s stock, currently worth USD 80 per share (USD 80,000 total), with a six-month lock-up before they can sell freely. Worried about volatility before the lock-up ends, they build a collar: buying 10 put contracts at a USD 72 strike for USD 2.50 each (USD 2,500 total) and selling 10 call contracts at a USD 92 strike for USD 2.30 each (USD 2,300 total), for a net cost of just USD 200.
If the stock drops to USD 60 before the lock-up ends, the put protects their position’s value at USD 72 per share — USD 72,000 instead of USD 60,000, a USD 12,000 difference funded almost entirely by the near-zero-cost hedge. If the stock instead rallies to USD 100, their gains are capped at USD 92 per share when the shares are called away, missing out on USD 8,000 of additional upside they would have had unhedged.
Advantages of Collar Option Strategy
Low or zero net cost. A well-structured collar can hedge significant downside risk for little to no out-of-pocket premium.
Protects concentrated positions without selling. Useful for employees or founders holding large single-stock positions subject to lock-ups or tax considerations around selling.
Defined, known range of outcomes. Both the floor and ceiling are set in advance, removing much of the uncertainty around the position’s near-term value.
Flexible structuring. Investors can adjust strike distances to favour more downside protection or more retained upside, depending on their risk tolerance.
Widely available on liquid large-cap stocks. Most heavily-traded US stocks have sufficiently liquid options markets to build an efficient collar.
Risks and Limitations
Caps upside potential. The biggest trade-off — if the stock rallies strongly, gains beyond the call strike are forfeited entirely.
Shares can be called away. If the stock rises above the call strike, the investor may be forced to sell shares they wanted to continue holding, potentially triggering unwanted tax events.
Requires an existing stock position. Unlike a standalone options strategy, a collar only makes sense layered on top of shares the investor already owns.
Temporary protection only. The hedge expires with the options; rolling the collar forward requires repeating the structure and incurs new transaction costs.
Complexity for a three-part position. Managing stock, a long put, and a short call simultaneously requires more active oversight than a single-leg strategy.
Collar vs Protective Put Alone
| Feature | Collar | Protective Put Alone |
|---|---|---|
| Net cost of hedge | Low to zero (call premium offsets put) | Full put premium paid out of pocket |
| Upside potential | Capped at call strike | Unlimited |
| Downside protection | Floored at put strike | Floored at put strike |
| Best for | Investors willing to cap upside for cheaper protection | Investors wanting to retain full upside despite higher cost |
Source: Standard options hedging strategy comparison.
The Bottom Line
A collar lets Singapore investors holding a meaningful stock position — particularly concentrated employer stock — protect against a sharp decline at little or no net cost, in exchange for giving up gains beyond a set ceiling. It is insurance, not a growth strategy, and should be evaluated against how much upside the investor is willing to sacrifice for peace of mind.
Frequently Asked Questions
What is a zero-cost collar?
Who typically uses a collar strategy?
Can my shares be forced to sell in a collar?
Is a collar the same as a covered call?
How long does a collar protect a position for?
Holding a large stock position and considering a hedge? Compare options-capable brokers.