An option chain lists every call and put for a stock, with prices, volume, open interest, and Greeks for each strike and expiration date.

As of Nov 4, 2026, Comfort Systems USA Inc (FIX) had 1.82K listed option contracts across 8 expiration dates, from Nov 20, 2026 to Jan 19, 2029.

Comfort Systems USA had 8 expiration dates as of Nov 4, 2026, 0 of them weekly. The nearest was Nov 20, 2026 and the furthest Jan 19, 2029.

2.72K Comfort Systems USA option contracts traded on Nov 4, 2026, and open interest was 23.85K contracts. Over the past 30 days, volume averaged 1.82K contracts per day. The FIX option volume chart shows volume by strike and expiration date.

Comfort Systems USA IV rank is 20, so its 30-day implied volatility of 72.3% is near the bottom of its one-year range. Over the past year it ranged from 46.3% on Nov 5, 2025 to 180.6% on Oct 16, 2026. See the FIX implied volatility history for a longer view.

Comfort Systems is a mechanical, electrical, and plumbing contractor with significant exposure to the AI infrastructure buildout, with data centers and semiconductor projects accounting for over half of its sales today.