NiSource (NI) Options Chain

NYSE: NIUtilitiesPower GenerationUSD

40.76+0.23 (+0.57%)

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

Expiration date

Expiration: Nov 20, 2026
Days to expiration: 40
Share price: $40.76
Put/call ratio (OI): 0.95
Put/call ratio (volume): 2.76
ATM implied volatility: 24.4%
Expected move: ±$3.29
Open interest (C / P): 687 / 655

NI options summary

The NI options chain for the November 20, 2026 expiration lists 9 call and 9 put contracts, with 40 days until expiration. Open interest stands at 687 calls and 655 puts, a put/call ratio of 0.95, which is fairly balanced between calls and puts. At-the-money implied volatility near the $40.00 strike is 24.4%, which implies the market expects a move of about ±$3.29 (8.1%) in NiSource stock by expiration.

The most open interest sits at the $50.00 call (279 contracts) and the $40.00 put (387 contracts).

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

NI options chain · November 20, 2026

NI 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
8	1	342.1%	25.30	22.70	26.10	22.50	—	—	—	—	—	—
0	2	—	21.90	0.00	0.00	25.00	0.00	0.75	0.05	102.3%	—	1
0	4	—	17.00	0.00	0.00	30.00	0.00	0.00	0.45	25.0%	2	0
13	1	44.1%	5.72	5.30	6.20	35.00	0.00	0.35	0.25	41.0%	124	181
80	20	25.7%	1.12	1.35	1.80	40.00	0.55	0.90	1.30	23.1%	1	387
NI $40.76
163	8	22.8%	0.09	0.05	0.15	45.00	4.20	5.40	4.76	48.6%	1	80
279	3	35.9%	0.02	0.00	0.10	50.00	9.00	10.50	10.74	53.4%	2	6
143	9	64.1%	0.10	0.00	0.75	55.00	0.00	0.00	11.14	—	2	0
1	1	78.2%	0.50	0.00	0.80	60.00	16.60	20.60	16.11	109.8%	1	0
—	—	—	—	—	—	65.00	0.00	0.00	17.85	—	2	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 NI put/call ratio?

For the November 20, 2026 expiration, the NI put/call ratio based on open interest is 0.95 (655 puts vs 687 calls), and 2.76 based on today's volume. A ratio above 1 means more puts than calls.

What is NI's implied volatility?

At-the-money implied volatility for NI options expiring November 20, 2026 is about 24.4%, an annualized estimate of how much the market expects NiSource stock to move.

How many NI option expiration dates are there?

NI has 4 listed expiration dates, from Oct 16, 2026 to Apr 16, 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.