First Interstate BancSystem (FIBK) - Market capitalization

Market cap: £2.63 Billion

As of December 2025 First Interstate BancSystem has a market cap of £2.63 Billion. This makes First Interstate BancSystem the world's 3662th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.

Market cap history of First Interstate BancSystem from 2010 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	£2.63 B	-2.36%
2024	£2.69 B	7.48%
2023	£2.51 B	-24.77%
2022	£3.33 B	78.05%
2021	£1.87 B	0.56%
2020	£1.86 B	-10.76%
2019	£2.08 B	19.6%
2018	£1.74 B	4.37%
2017	£1.67 B	8.1%
2016	£1.54 B	73.67%
2015	£0.89 B	8.92%
2014	£0.81 B	7.74%
2013	£0.75 B	83.76%
2012	£0.41 B	14.7%
2011	£0.36 B	-14.73%
2010	£0.42 B

End of Day market cap according to different sources

On Dec 4th, 2025 the market cap of First Interstate BancSystem was reported to be:

£2.59 Billion

by Nasdaq

£2.60 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Zions Bancorporation ZION	£6.14 B	133.09%	🇺🇸 USA
Glacier Bancorp GBCI	£4.12 B	56.46%	🇺🇸 USA
Western Alliance Bancorporation WAL	£7.06 B	168.24%	🇺🇸 USA
National Bank Holdings NBHC	£1.09 B	-58.53%	🇺🇸 USA
U.S. Bancorp USB	£59.83 B	2,171.23%	🇺🇸 USA
Heartland Financial USA HTLF	£2.08 B	-21.01%	🇺🇸 USA
Wells Fargo WFC	£215.84 B	8,093.29%	🇺🇸 USA

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Market capitalization of First Interstate BancSystem (FIBK)

Market cap: £2.63 Billion