Dexcom (DXCM) Protective Put Calculator

Calculator · free · no signup · DXCM

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

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About Dexcom

Dexcom (DXCM) is a public Medical Device company, incorporated in Delaware and headquartered in San Diego, CA.

Last close: $89.6 per share (as of 2026-08-19).

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

Dexcom, Inc. is an American multinational healthcare company that develops, manufactures, produces and distributes a line of continuous glucose monitoring (CGM) systems for diabetes management. It operates internationally with global headquarters and R&D center in San Diego, California, U.S., and manufacturing facilities in Mesa, Arizona, U.S.; Batu Kawan, Malaysia; and Athenry, County Galway, Ireland.

Source: Wikipedia (CC BY-SA 4.0)

The company builds continuous glucose monitors, sensors worn on the body that report blood sugar every few minutes to a phone rather than requiring a fingerstick. Each sensor is replaced on a fixed cycle, so once a patient starts, the revenue is a subscription in everything but name. Growth has come from moving beyond type 1 diabetes into the far larger type 2 population and from insurance coverage expanding to match. Integration with insulin pumps makes the sensor part of an automated system rather than a standalone reader. Headquarters are in San Diego.

Sources: sec.gov · en.wikipedia.org

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

A protective put caps your downside on the DXCM 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 DXCM option chain, with annual cost, max loss, and tax-treatment notes.

Example: a 5,000-share DXCM position at $89.6 is worth $448,000. A 1-year 30%-OTM put on that position typically runs 2-4% of position value per year (about $8,960 to $17,920) before any premium offset from a short call. The calculator prices both structures off DXCM's current option chain so you see the actual cost for your chosen floor, tenor, and cap.

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

Dexcom equity questions

How much does it cost to hedge DXCM 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 DXCM'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 DXCM option chain and shows the annual cost, maximum loss, and tax treatment.
Does Dexcom grant ISOs, NSOs, or RSUs?
Equity compensation at Dexcom typically takes the form of restricted stock units (RSUs). Restricted stock units are taxed as ordinary income when they vest.
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