Core & Main (CNM) Options Chain

NYSE: CNMConsumer DiscretionaryDurable GoodsUSD

40.35-0.02 (-0.05%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Expiration date

Expiration: Nov 20, 2026
Days to expiration: 40
Share price: $40.35
Put/call ratio (OI): 1.73
Put/call ratio (volume): 35.67
ATM implied volatility: 34.8%
Expected move: ±$4.65
Open interest (C / P): 62 / 107

CNM options summary

The CNM options chain for the November 20, 2026 expiration lists 3 call and 5 put contracts, with 40 days until expiration. Open interest stands at 62 calls and 107 puts, a put/call ratio of 1.73, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $40.00 strike is 34.8%, which implies the market expects a move of about ±$4.65 (11.5%) in Core & Main stock by expiration.

The most open interest sits at the $45.00 call (51 contracts) and the $37.50 put (54 contracts).

Summary generated from market data by MetaCap's automated system. Methodology

CNM options chain · November 20, 2026

CNM calls and puts by strike price. Shaded cells are in the money.
Calls							Puts
OI	Vol	IV	Last	Bid	Ask	Strike	Bid	Ask	Last	IV	Vol	OI
—	—	—	—	—	—	32.50	—	—	0.25	—	—	—
—	—	—	—	—	—	37.50	0.65	0.85	0.75	37.5%	74	54
—	—	—	2.02	—	—	40.00	1.45	1.70	1.40	34.8%	30	45
CNM $40.35
—	—	—	—	—	—	42.50	2.80	3.20	3.30	35.0%	1	6
51	2	58.3%	0.35	0.35	1.50	45.00	4.10	6.20	3.00	59.4%	2	2
11	1	50.9%	0.75	0.00	1.35	47.50	—	—	—	—	—	—

In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.

Frequently asked questions

What is the CNM put/call ratio?

For the November 20, 2026 expiration, the CNM put/call ratio based on open interest is 1.73 (107 puts vs 62 calls), and 35.67 based on today's volume. A ratio above 1 means more puts than calls.

What is CNM's implied volatility?

At-the-money implied volatility for CNM options expiring November 20, 2026 is about 34.8%, an annualized estimate of how much the market expects Core & Main stock to move.

How many CNM option expiration dates are there?

CNM has 6 listed expiration dates, from Oct 16, 2026 to Jan 21, 2028.

What does "in the money" mean?

A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.