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FIBK
First Interstate BancSystem, Inc. Common Stock (DE)
stock NASDAQ

At Close

Aug 14, 2026 3:59:57 PM EDT

39.16USD+0.824%(+0.32)884,389

0.00Bid 0.00Ask 0.00Spread

Pre-market

Aug 14, 2026 8:43:30 AM EDT

38.90USD+0.154%(+0.06)877

After-hours

Aug 14, 2026 4:57:30 PM EDT

38.79USD-0.945%(-0.37)600

OverviewOption ChainHistoricalExchangesShortsMore

Expiration Dates

ITM/OTM for Sep 18, 2026View All Dates

Calls ITM	Calls OTM	Puts ITM	Puts OTM
44	99	0	54

Puts

Calls

Puts

Calls

Puts

Calls

In the Money (ITM)

Calls

Strike	Price	Change	Vol	OI	Last	Contract Name
55.00 C	0	0%	0			FIBK260918C00055000
50.00 C	0	0%	0			FIBK260918C00050000
45.00 C	0.27	-64.00%	40	60	07-21	FIBK260918C00045000
40.00 C	0.36	-52.00%	1	39	08-10	FIBK260918C00040000
35.00 C	4.49	+83.27%	1	32	07-30	FIBK260918C00035000
30.00 C	9.49	+69.46%	10	5	07-17	FIBK260918C00030000
25.00 C	13.75	0%	2	1	02-17	FIBK260918C00025000
22.50 C	18.50	+23.75%	3	4	02-06	FIBK260918C00022500
20.00 C	18.60	+16.40%	10	2	08-03	FIBK260918C00020000

Puts

Strike	Price	Change	Vol	OI	Last	Contract Name
55.00 P	0	0%	0			FIBK260918P00055000
50.00 P	12.60	-3.67%	2	0	02-17	FIBK260918P00050000
45.00 P	9.45	0%	1	0	06-17	FIBK260918P00045000
40.00 P	5.00	0%	1	0	06-17	FIBK260918P00040000
35.00 P	0.40	-33.33%	6	6	08-11	FIBK260918P00035000
30.00 P	0.70	-17.65%	12	32	06-18	FIBK260918P00030000
25.00 P	0.30	-70.00%	1	14	05-18	FIBK260918P00025000
22.50 P	0.55	-38.89%	1	2	04-15	FIBK260918P00022500
20.00 P	0	0%	0			FIBK260918P00020000