Costco (COST) Protective Put Calculator

Calculator · free · no signup · COST

Price a protective put, zero-cost collar, or put spread on Costco. Annual cost, max loss, upside cap, tax treatment, auto-filled from current COST option chain.

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About Costco

Costco (COST) is a public Other company, incorporated in Washington and headquartered in Issaquah, WA.

Equity grants at Costco typically include restricted stock units (RSUs).

Costco Wholesale Corporation is an American multinational corporation that operates a chain of membership-only big-box warehouse club retail stores. As of 2025, Costco is the third-largest retailer in the world, and as of August 2024, the world's largest retailer of beef, poultry, organic produce, and wine, with just under a third of American consumers regularly shopping at Costco warehouses. As of 2026, Costco is ranked 12th on the Fortune 500 rankings of the largest United States corporations by total revenue, and is also ranked as the largest grocery retailer in Canada.

Source: Wikipedia (CC BY-SA 4.0)

Jim Sinegal and Jeff Brotman opened the first Costco warehouse in Seattle in 1983, and the company merged with Price Club, the format's originator, in 1993. The economics are unusual: gross margin on goods is held deliberately low, roughly eleven percent, and membership fees supply the majority of operating profit, which aligns the company with members rather than suppliers. Kirkland Signature private label carries a large share of sales. Employee pay and retention run well above retail norms. Headquarters are in Issaquah, Washington.

Sources: costco.com · en.wikipedia.org

Equity comp at Costco

  • RSUs use single-trigger vesting: shares become yours as each portion vests on schedule, and the value is taxed as ordinary income at that point. No IPO or acquisition is required.

Researched 2026-08-17.

OptionsAhoy is an independent tool and is not affiliated with, endorsed by, or sponsored by Costco.

A protective put caps your downside on the COST position at a chosen floor; a zero-cost collar pays for that floor by capping the upside. This calculator prices both structures off the current COST option chain, with annual cost, max loss, and tax-treatment notes.

All Costco tools → · Use the generic Protect Your Stock Calculator for any company.

Costco equity questions

How much does it cost to hedge COST stock?
The cost of a protective put depends on how far below the current price you set the floor, how long the protection lasts, and COST's option-implied volatility. A zero-cost collar lowers that cost by selling away some upside. The calculator above prices both structures off the current COST option chain and shows the annual cost, maximum loss, and tax treatment.
Does Costco grant ISOs, NSOs, or RSUs?
Equity compensation at Costco typically takes the form of restricted stock units (RSUs). Restricted stock units are taxed as ordinary income when they vest.
Do Costco RSUs use double-trigger vesting?
No. Costco restricted stock units (RSUs) use single-trigger vesting: each tranche becomes yours as it vests on schedule, taxed as ordinary income at that point, with no liquidity event required.
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