Enpro (NPO) Options Chain

NYSE: NPOIndustrialsMetal FabricationsUSD

311.45+3.77 (+1.23%)

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

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 68
Share price: $311.45
Put/call ratio (OI): 1.10
Put/call ratio (volume): 0.92
ATM implied volatility: 42.4%
Expected move: ±$57.00
Open interest (C / P): 156 / 172

NPO options summary

The NPO options chain for the December 18, 2026 expiration lists 39 call and 35 put contracts, with 68 days until expiration. Open interest stands at 156 calls and 172 puts, a put/call ratio of 1.10, which is fairly balanced between calls and puts. At-the-money implied volatility near the $310.00 strike is 42.4%, which implies the market expects a move of about ±$57.00 (18.3%) in Enpro stock by expiration.

The most open interest sits at the $290.00 call (31 contracts) and the $195.00 put (30 contracts).

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

NPO options chain · December 18, 2026

NPO 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
2	1	—	198.50	176.20	180.20	120.00	0.00	0.00	0.95	50.0%	1	0
2	1	365.2%	200.20	231.30	235.00	125.00	0.00	0.00	1.80	50.0%	2	0
0	1	—	173.00	0.00	0.00	130.00	0.00	2.25	0.90	107.9%	1	8
—	—	—	—	—	—	135.00	0.00	2.30	0.95	104.0%	1	6
1	1	—	179.00	156.30	160.50	140.00	0.00	2.40	1.10	100.7%	1	12
1	—	184.0%	163.80	179.00	183.20	145.00	0.00	2.45	1.30	97.1%	1	9
1	—	233.3%	220.80	187.50	191.70	150.00	0.00	1.50	0.50	85.7%	1	8
4	3	194.7%	187.80	174.50	179.00	155.00	0.00	2.70	1.10	91.1%	1	7
—	—	—	—	—	—	160.00	0.00	2.85	1.30	88.4%	1	7
4	1	212.5%	211.80	173.00	177.50	165.00	0.00	3.00	1.45	85.6%	1	5
1	—	110.7%	113.87	144.90	148.80	170.00	0.00	3.20	1.70	83.2%	1	4
2	1	—	196.60	130.70	134.10	175.00	0.00	2.90	2.10	78.2%	1	3
—	—	—	—	—	—	180.00	0.00	3.00	2.40	75.4%	1	2
1	—	162.5%	147.00	146.60	150.20	185.00	0.00	3.20	2.40	73.1%	—	2
2	1	157.7%	142.40	141.90	145.50	190.00	0.40	4.50	1.80	76.7%	1	2
1	—	139.1%	105.80	133.00	136.40	195.00	0.70	2.60	2.20	67.2%	1	30
2	1	171.2%	183.10	139.60	144.20	200.00	0.50	3.60	3.10	67.2%	—	1
1	—	140.1%	124.40	123.00	127.30	210.00	—	—	—	—	—	—
—	—	—	—	—	—	220.00	3.60	6.70	11.10	70.7%	—	1
1	1	193.3%	94.00	132.50	135.90	230.00	—	—	—	—	—	—
2	1	114.2%	92.70	89.00	92.90	250.00	6.10	9.60	8.10	59.3%	18	15
—	—	—	—	—	—	260.00	4.30	7.00	3.88	50.0%	6	20
1	—	100.6%	51.24	71.90	75.40	270.00	5.70	9.00	7.47	48.4%	1	1
1	1	51.1%	76.57	43.50	46.10	280.00	8.10	11.50	9.84	47.0%	1	7
31	4	143.3%	52.99	82.80	86.70	290.00	—	—	—	—	—	—
2	1	52.0%	62.50	32.00	35.20	300.00	—	—	—	—	—	—
—	—	—	—	—	—	310.00	19.60	22.10	30.94	42.4%	1	1
NPO $311.45
3	6	46.2%	16.47	18.20	21.20	320.00	24.80	27.70	37.13	42.4%	1	8
5	6	45.4%	12.99	13.40	17.00	330.00	—	—	—	—	—	—
11	6	44.6%	21.07	10.70	13.40	340.00	100.40	103.90	89.00	157.3%	1	0
3	1	44.1%	14.40	7.00	10.50	350.00	54.00	57.50	45.01	57.7%	1	1
8	6	43.8%	13.31	5.50	8.20	360.00	38.40	41.50	67.45	—	8	8
11	10	43.0%	11.50	3.50	6.10	370.00	128.60	131.70	115.50	170.2%	1	0
0	1	42.9%	3.50	3.30	4.70	380.00	—	—	—	—	—	—
0	1	12.5%	13.26	0.00	0.00	390.00	77.70	81.00	90.70	38.7%	—	2
0	1	12.5%	11.07	0.00	0.00	400.00	—	—	—	—	—	—
1	—	58.4%	3.30	4.60	8.20	410.00	68.60	72.00	103.80	—	—	1
3	1	73.9%	2.65	9.40	12.50	420.00	75.60	79.00	112.40	—	—	1
25	1	45.7%	0.70	0.60	1.60	430.00	—	—	—	—	—	—
2	—	50.2%	3.60	0.45	1.95	440.00	—	—	—	—	—	—
3	2	76.3%	25.40	6.00	10.60	450.00	—	—	—	—	—	—
14	—	75.4%	22.90	5.00	9.10	460.00	0.00	0.00	157.50	—	—	0
—	—	—	—	—	—	490.00	183.50	187.00	154.50	82.1%	—	0
0	—	54.0%	2.05	0.00	1.50	500.00	—	—	—	—	—	—
1	—	58.7%	1.50	0.00	1.70	520.00	213.50	216.80	183.50	88.9%	1	0
3	1	62.2%	1.90	0.00	1.70	540.00	233.50	236.70	203.50	93.1%	1	0

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 NPO put/call ratio?

For the December 18, 2026 expiration, the NPO put/call ratio based on open interest is 1.10 (172 puts vs 156 calls), and 0.92 based on today's volume. A ratio above 1 means more puts than calls.

What is NPO's implied volatility?

At-the-money implied volatility for NPO options expiring December 18, 2026 is about 42.4%, an annualized estimate of how much the market expects Enpro stock to move.

How many NPO option expiration dates are there?

NPO has 4 listed expiration dates, from Oct 16, 2026 to Mar 19, 2027.

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.