# A Professional's Guide to Zero-Cost Portfolio Insurance with Collars ▴ Guide

**Published:** 2025-08-21
**Categories:** Guide

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## The Equilibrium of Risk

A [zero-cost collar](https://prime.greeks.live/area/zero-cost-collar/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite) establishes a defined operational range for an asset, creating a precise boundary for potential price fluctuations. This financial structure is engineered by holding a long position in an [underlying asset](https://prime.greeks.live/question/how-does-the-underlying-assets-volatility-and-liquidity-profile-affect-rfq-quote-dispersion/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite), purchasing a protective put option, and simultaneously selling a call option. The premium generated from selling the call option is calibrated to finance the purchase of the put option, resulting in a net-zero upfront cost for the position’s insurance component. This structure provides a floor for the asset’s value, securing it against significant downturns, while also setting a ceiling on its potential upside.

The collar serves as a system for managing uncertainty, allowing portfolio managers to quantify and cap their risk exposure on a specific holding. It transforms the open-ended risk profile of an asset into a controlled, predictable framework. This strategic application of derivatives allows for the deliberate shaping of return distributions, a core discipline in professional portfolio management.

Understanding the mechanics of a collar is foundational to its effective deployment. The [protective put](https://prime.greeks.live/area/protective-put/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite) option grants the holder the right to sell the asset at a predetermined [strike price](https://prime.greeks.live/guide/using-delta-and-volatility-to-pinpoint-your-optimal-strike-price/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite), establishing a minimum exit value. This acts as a definitive backstop against adverse market movements. Conversely, the short call option obligates the seller to deliver the asset at a different predetermined strike price if the market price rises above it.

This action caps the profit potential of the holding. The selection of these [strike prices](https://prime.greeks.live/question/how-does-volatility-skew-alter-the-optimal-strike-prices-in-a-collar/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite) for both the put and call options is a critical determinant of the strategy’s risk-reward profile. The relationship between the strike prices and the underlying asset’s price dictates the width of the collar, defining the range within which the asset’s value will float. A narrower collar offers tighter protection at the cost of more limited upside, while a wider collar allows for greater price movement in both directions.

The “zero-cost” aspect is achieved when the premium received from the [short call](https://prime.greeks.live/area/short-call/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite) precisely offsets the premium paid for the long put, creating a self-funding insurance mechanism. This financial engineering is a powerful tool for isolating and neutralizing specific market risks without incurring immediate capital outlay.

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## Calibrating the Protective Structure

Deploying a zero-cost collar is an exercise in strategic precision. It requires a clear-eyed assessment of an asset’s role within a portfolio and a definitive view on acceptable risk parameters. The process moves from theoretical understanding to tangible market execution, demanding a systematic approach to asset selection, strike calibration, and trade implementation. This is where the principles of [risk management](https://prime.greeks.live/area/risk-management/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite) are forged into a functional market position.

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## Asset Candidacy and Strategic Intent

The suitability of an asset for a collar strategy is determined by the investor’s objective. Collars are most effectively applied to positions that have experienced significant appreciation, concentrated single-stock holdings that pose a diversification risk, or assets entering a period of anticipated volatility. The primary intent is [capital preservation](https://prime.greeks.live/area/capital-preservation/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite).

An investor may wish to protect gains in a high-flying technology stock ahead of an earnings announcement or secure the value of a large, illiquid equity position without triggering a taxable event through an outright sale. The strategic decision to implement a collar is a proactive measure to impose stability on an otherwise volatile asset, locking in a valuation range that aligns with broader portfolio goals.

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## The Geometry of Strike Selection

The heart of the collar strategy lies in the meticulous selection of the put and call strike prices. This process defines the protective floor and the upside ceiling for the underlying asset. The choice of the put strike is a direct expression of risk tolerance; a strike price set 5% below the [current market price](https://prime.greeks.live/question/what-are-the-challenges-of-finding-options-block-liquidity-for-strikes-far-from-the-current-price/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite) offers a tighter safety net than one set 10% below. This decision directly impacts the cost of the [put option](https://prime.greeks.live/area/put-option/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite).

Consequently, the call strike must be calibrated to generate sufficient premium to fund this put. A more protective put requires a more valuable call to be sold, which typically means setting the call’s strike price closer to the current [market price](https://prime.greeks.live/question/could-a-different-market-structure-achieve-both-price-improvement-and-efficient-price-discovery-simultaneously/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite), thereby reducing the potential for further gains.

> During periods of moderate market volatility, a properly structured zero-cost collar can reduce a position’s maximum drawdown by over 75% compared to an unhedged holding.

The relationship between these variables is governed by options pricing models, with implied volatility playing a crucial role. Higher implied volatility increases the premiums for both puts and calls, potentially allowing for a wider collar ▴ a higher ceiling and a higher floor ▴ at zero cost. The final structure is a bespoke balance between the desired level of downside protection and the acceptable limit on upside participation.

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**Define the Protection Level** ▴ Determine the maximum acceptable loss on the underlying asset. This sets the strike price for the long put option (e.g. 90% of the current stock price).

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**Calculate the Put Premium** ▴ Based on the selected put strike, current market price, time to expiration, and implied volatility, determine the cost of the protective put.

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**Identify the Funding Call Strike** ▴ Search for a [call option](https://prime.greeks.live/area/call-option/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite) with the same expiration date whose premium matches the cost of the put. The strike price of this call becomes the ceiling for the position.

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**Analyze the Risk-Reward Profile** ▴ Evaluate the resulting collar. The floor is the put strike price, and the ceiling is the call strike price. Ensure this range aligns with the strategic objective for the asset.

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**Execute as a Single Transaction** ▴ For institutional-level execution, especially with large positions, the collar should be implemented as a single, multi-leg trade to eliminate execution risk between the components.

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## Execution Dynamics for Block Positions

For substantial positions, executing the two option legs of a collar separately introduces the risk of adverse price movements between trades, known as “leg risk.” A professional approach demands that the collar be executed as a single, unified transaction. This is accomplished through a Request for Quote ([RFQ](https://prime.greeks.live/area/rfq/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite)) system directed to multiple liquidity providers. An RFQ for a multi-leg options strategy allows a portfolio manager to request a firm, two-sided market for the entire collar structure from specialized market makers. This process ensures competitive pricing and guarantees that the “zero-cost” objective is met with precision.

The RFQ mechanism provides anonymity and access to deeper liquidity than what is visible on public exchanges, which is essential for executing large block trades without causing market impact or revealing strategic intent. This method transforms the execution from a speculative endeavor into a controlled, efficient implementation of a predefined risk management structure.

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## Beyond Static Defense Systems

Mastering the zero-cost collar moves beyond its application as a one-time protective measure for a single asset. It involves integrating the collar as a dynamic component within a comprehensive portfolio management framework. Advanced applications involve tailoring collar strategies to specific market conditions, managing them over time, and using them to sculpt the risk profile of the entire portfolio. This elevated use transforms the collar from a simple shield into a sophisticated tool for shaping long-term investment outcomes.

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## Dynamic Collar Management and Rolling

A collar is not a “set and forget” device. As the price of the underlying asset evolves and time passes, the collar’s effectiveness and positioning must be re-evaluated. Dynamic management involves adjusting the collar in response to market changes. For instance, if the underlying asset rallies significantly and approaches the short call strike, a manager might “roll” the position up and out.

This involves closing the existing collar and opening a new one with higher strike prices and a later expiration date. This action locks in some of the recent gains and re-establishes a new protective range at a higher valuation. Conversely, if the asset price falls, the manager might choose to roll the collar down to maintain a relevant level of protection. This active management requires a deep understanding of options pricing and a clear view of the market’s trajectory, turning a static hedge into an adaptive risk management system that systematically compounds gains while consistently defending capital.

The decision of when and how to adjust the strikes is where the true craft lies; it’s a judgment call on whether a recent price move represents a new valuation regime or a temporary fluctuation. This is the intellectual grappling at the core of active portfolio defense.

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## Collars in High and Low Volatility Regimes

The prevailing volatility environment critically influences the structure and attractiveness of a zero-cost collar. In high-volatility markets, option premiums are elevated across the board. This environment is highly advantageous for collar implementation. The rich premium from the sale of the call option can finance a more protective put, often allowing for a “wider” collar.

This means an investor can set a higher protective floor (e.g. a put strike at 95% of the stock price) and a higher upside ceiling (e.g. a call strike at 115%) for a net-zero cost. High volatility provides the raw material to construct more favorable protective structures. In low-volatility regimes, the opposite is true. With depressed option premiums, the income generated by the short call is minimal.

To finance a meaningful level of downside protection, the call strike must be set very close to the current asset price, severely capping upside potential. In such environments, the trade-off may become less appealing, and a manager might consider alternative hedging structures or accept a debit to establish a collar with a more desirable risk-reward profile. The ability to diagnose the volatility environment and understand its impact on options pricing is essential for deploying collars effectively and avoiding structurally weak hedges.

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## Systemic Risk Mitigation and Portfolio Overlay

The most sophisticated application of this strategy is its use as a portfolio-level overlay. Instead of collaring individual stocks, an institution can apply a zero-cost collar to a broad market index ETF that mirrors the portfolio’s overall systematic risk exposure. For example, a large-cap equity fund can purchase puts and sell calls on the S&P 500 to create a protective band around the entire portfolio’s value. This approach does not hedge the idiosyncratic risk of individual holdings but establishes a defined boundary for portfolio-wide drawdowns resulting from broad market declines.

Sizing this overlay correctly is paramount. The notional value of the options structure must be matched to the portfolio’s market beta to achieve the desired level of systemic protection. This technique is a powerful instrument for institutional investors and family offices looking to manage funded status or enforce strict risk budgets across their entire asset base. It represents a shift from asset-specific defense to a holistic system of portfolio risk governance, insulating the investment strategy from macroeconomic shocks and ensuring its resilience through turbulent market cycles.

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## The Mandate for Active Portfolio Design

The financial markets present a continuous stream of unstructured risk. A professional approach requires the imposition of deliberate structure upon this chaos. The zero-cost collar is a primary tool for this purpose, a mechanism that allows for the precise definition of outcomes. Its implementation is a declaration of intent ▴ to participate in market upside on your own terms while building a firewall against catastrophic loss.

It moves the practitioner from a passive recipient of market volatility to an active designer of their own risk exposure. This is the essential mindset shift. The future of sophisticated investing lies in this proactive engineering of portfolio dynamics, where risk is not merely avoided but is actively shaped, managed, and bounded. The tools are available; the mandate is to use them with strategic conviction.

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## Glossary

<a href="https://prime.greeks.live/area/zero-cost-collar/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
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## Zero-Cost Collar

Meaning ▴ The Zero-Cost Collar is a defined-risk options strategy involving the simultaneous holding of a long position in an underlying asset, the sale of an out-of-the-money call option, and the purchase of an out-of-the-money put option, all with the same expiration date. </a><a href="https://prime.greeks.live/question/how-does-the-underlying-assets-volatility-and-liquidity-profile-affect-rfq-quote-dispersion/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
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## Underlying Asset

High asset volatility and low liquidity amplify dealer risk, causing wider, more dispersed RFQ quotes and impacting execution quality. </a><a href="https://prime.greeks.live/area/protective-put/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
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## Protective Put

Meaning ▴ A Protective Put is a risk management strategy involving the simultaneous ownership of an underlying asset and the purchase of a put option on that same asset. </a><a href="https://prime.greeks.live/guide/using-delta-and-volatility-to-pinpoint-your-optimal-strike-price/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
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## Strike Price

Pinpoint your optimal strike price by engineering trades with Delta and Volatility, the professional's tools for market mastery. </a><a href="https://prime.greeks.live/question/how-does-volatility-skew-alter-the-optimal-strike-prices-in-a-collar/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
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## Strike Prices

Volatility skew forces a direct trade-off in a collar, compelling a narrower upside cap to finance the market's higher price for downside protection. </a><a href="https://prime.greeks.live/area/short-call/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
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## Short Call

Meaning ▴ A Short Call represents the sale of a call option, obligating the seller to deliver the underlying asset at a specified strike price if the option is exercised prior to or at expiration. </a><a href="https://prime.greeks.live/area/risk-management/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
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## Risk Management

Meaning ▴ Risk Management is the systematic process of identifying, assessing, and mitigating potential financial exposures and operational vulnerabilities within an institutional trading framework. </a><a href="https://prime.greeks.live/area/capital-preservation/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
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## Capital Preservation

Meaning ▴ Capital Preservation defines the primary objective of an investment strategy focused on safeguarding the initial principal amount against financial loss or erosion, ensuring the nominal value of the invested capital remains intact or minimally impacted over a defined period. </a><a href="https://prime.greeks.live/question/what-are-the-challenges-of-finding-options-block-liquidity-for-strikes-far-from-the-current-price/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
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## Current Market Price

The challenge of finding block liquidity for far-strike options is a function of market maker risk aversion and a scarcity of natural counterparties. </a><a href="https://prime.greeks.live/area/put-option/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
![Precision-engineered multi-vane system with opaque, reflective, and translucent teal blades. This visualizes Institutional Grade Digital Asset Derivatives Market Microstructure, driving High-Fidelity Execution via RFQ protocols, optimizing Liquidity Pool aggregation, and Multi-Leg Spread management on a Prime RFQ](https://options.greeks.live/wp-content/uploads/2025/07/precision-engineered-multi-vane-system-illustrating-institutional-digital-asset-derivatives-rfq-protocols-market-microstructure-optimized-liquidity-aggregation-prime-os-high-fidelity-execution.jpg)

## Put Option

Meaning ▴ A Put Option constitutes a derivative contract that confers upon the holder the right, but critically, not the obligation, to sell a specified underlying asset at a predetermined strike price on or before a designated expiration date. </a><a href="https://prime.greeks.live/question/could-a-different-market-structure-achieve-both-price-improvement-and-efficient-price-discovery-simultaneously/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
![A meticulously engineered mechanism showcases a blue and grey striped block, representing a structured digital asset derivative, precisely engaged by a metallic tool. This setup illustrates high-fidelity execution within a controlled RFQ environment, optimizing block trade settlement and managing counterparty risk through robust market microstructure](https://options.greeks.live/wp-content/uploads/2025/08/precision-engineered-institutional-digital-asset-derivatives-rfq-execution.jpg)

## Market Price

A system can achieve both goals by using private, competitive negotiation for execution and public post-trade reporting for discovery. </a><a href="https://prime.greeks.live/area/call-option/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
![Precision-engineered modular components, with teal accents, align at a central interface. This visually embodies an RFQ protocol for institutional digital asset derivatives, facilitating principal liquidity aggregation and high-fidelity execution](https://options.greeks.live/wp-content/uploads/2025/07/precision-engineered-institutional-digital-asset-derivatives-rfq-execution-interface-for-atomic-settlement.jpg)

## Call Option

Meaning ▴ A Call Option represents a standardized derivative contract granting the holder the right, but critically, not the obligation, to purchase a specified quantity of an underlying digital asset at a predetermined strike price on or before a designated expiration date. </a><a href="https://prime.greeks.live/area/rfq/?utm_source=options.greeks.live&utm_medium=referral&utm_campaign=satellite" class="glossary-item-box">
![A precision-engineered system component, featuring a reflective disc and spherical intelligence layer, represents institutional-grade digital asset derivatives. It embodies high-fidelity execution via RFQ protocols for optimal price discovery within Prime RFQ market microstructure](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-execution-intelligence-prime-os.jpg)

## Rfq

Meaning ▴ Request for Quote (RFQ) is a structured communication protocol enabling a market participant to solicit executable price quotations for a specific instrument and quantity from a selected group of liquidity providers. </a>

**Tags:** [Risk Management](https://options.greeks.live/area/risk-management/), [Capital Preservation](https://options.greeks.live/area/capital-preservation/), [Protective Put](https://options.greeks.live/area/protective-put/), [Volatility Hedging](https://options.greeks.live/area/volatility-hedging/), [RFQ](https://options.greeks.live/area/rfq/), [Portfolio Insurance](https://options.greeks.live/area/portfolio-insurance/)	

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Secure portfolio gains and define your risk with the precision of an institutional-grade option collar strategy.

- 
### [The Reason Professionals Use Collars for Low-Cost Portfolio Insurance](https://options.greeks.live/guide/the-reason-professionals-use-collars-for-low-cost-portfolio-insurance/)
![A conceptual image illustrates a sophisticated RFQ protocol engine, depicting the market microstructure of institutional digital asset derivatives. Two semi-spheres, one light grey and one teal, represent distinct liquidity pools or counterparties within a Prime RFQ, connected by a complex execution management system for high-fidelity execution and atomic settlement of Bitcoin options or Ethereum futures.](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-market-microstructure-2.jpg)

Professionals use collars to engineer low-cost portfolio protection, transforming market volatility into a strategic asset.

- 
### [A Professional’s Guide to Zero-Cost Collars for Stock Protection](https://options.greeks.live/guide/a-professionals-guide-to-zero-cost-collars-for-stock-protection/)
![A high-precision, dark metallic circular mechanism, representing an institutional-grade RFQ engine. Illuminated segments denote dynamic price discovery and multi-leg spread execution. This core system optimizes capital efficiency and mitigates counterparty risk for digital asset derivatives, ensuring atomic settlement.](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-protocol-execution-engine-7.jpg)

A Professional's Guide to Zero-Cost Collars: Engineer downside protection and define your asset's performance channel.

- 
### [A Trader’s Guide to Zero-Cost Portfolio Insurance Using Collars](https://options.greeks.live/guide/a-traders-guide-to-zero-cost-portfolio-insurance-using-collars/)
![A macro view reveals a robust metallic component, signifying a critical interface within a Prime RFQ. This secure mechanism facilitates precise RFQ protocol execution, enabling atomic settlement for institutional-grade digital asset derivatives, embodying high-fidelity execution.](https://options.greeks.live/wp-content/uploads/2025/07/core-secure-institutional-digital-asset-derivatives-rfq-trade-system-element.jpg)

Secure portfolio gains and neutralize downside volatility with the zero-cost collar, the professional's tool for strategic risk engineering.

- 
### [A Trader’s Guide to Zero-Cost Portfolio Insurance](https://options.greeks.live/guide/a-traders-guide-to-zero-cost-portfolio-insurance/)
![A central hub with a teal ring represents a Principal's Operational Framework. Interconnected spherical execution nodes symbolize precise Algorithmic Execution and Liquidity Aggregation via RFQ Protocol. This facilitates High-Fidelity Execution and Price Discovery within Digital Asset Derivatives Market Microstructure.](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-execution-microstructure-prime-os-price-liquidity-alpha.jpg)

Master the art of costless portfolio defense by defining your own risk boundaries.

- 
### [A Professional’s Guide to Hedging Downside Risk with Options](https://options.greeks.live/guide/a-professionals-guide-to-hedging-downside-risk-with-options/)
![Two off-white elliptical components separated by a dark, central mechanism. This embodies an RFQ protocol for institutional digital asset derivatives, enabling price discovery for block trades, ensuring high-fidelity execution and capital efficiency within a Prime RFQ for dark liquidity.](https://options.greeks.live/wp-content/uploads/2025/07/institutional-digital-asset-derivatives-rfq-protocol-engine-4.jpg)

Mastering options hedging transforms risk from a threat to be feared into a variable to be controlled and exploited.

- 
### [The Reason Top Investors Use Collars to Manage Volatility](https://options.greeks.live/guide/the-reason-top-investors-use-collars-to-manage-volatility/)
![A sleek, illuminated object, symbolizing an advanced RFQ protocol or Execution Management System, precisely intersects two broad surfaces representing liquidity pools within market microstructure. Its glowing line indicates high-fidelity execution and atomic settlement of digital asset derivatives, ensuring best execution and capital efficiency.](https://options.greeks.live/wp-content/uploads/2025/07/principals-rfq-protocol-high-fidelity-execution-digital-asset-derivatives-market-microstructure-price-discovery-alpha-generation.jpg)

Top investors use collars to convert volatility from a threat into a defined, manageable parameter, unlocking capital efficiency.

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---

**Original URL:** https://options.greeks.live/guide/a-professionals-guide-to-zero-cost-portfolio-insurance-with-collars/
