First Interstate BancSystem, Inc. (FIBK) P/E Ratio History
Fairly ValuedTrading at 12.3x, near 5Y avg of 11.5x · 100th percentile · In line with own history · Data 2025–2026
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P/E Ratio Analysis
As of September 24, 2026, First Interstate BancSystem, Inc. (FIBK) trades at a price-to-earnings ratio of 12.3x, with a stock price of $36.02 and trailing twelve-month earnings per share of $3.35.
The current P/E is roughly in line with its 5-year average of 11.5x. Over the past five years, FIBK's P/E has ranged from a low of 10.9x to a high of 11.9x, placing the current valuation at the 100th percentile of its historical range.
Compared to the Financial Services sector median P/E of 13.9x, FIBK is roughly in line with its sector peers. The sector includes 804 companies with P/E ratios ranging from 0.0x to 157.5x.
The PEG ratio of 4.02 (P/E divided by 34% EPS growth) suggests the stock may be expensive relative to its earnings growth. Peter Lynch popularized the rule that a PEG below 1.0 indicates an attractive entry point.
Relative to the broader market, FIBK trades at a notable discount to the S&P 500 median P/E of 25.3x. Investors should consider the company's growth prospects, competitive position, and earnings quality when evaluating whether the current valuation is justified.
For a comprehensive intrinsic value estimate using discounted cash flow analysis, see our FIBK DCF Valuation Calculator →
Note: P/E ratio is just one valuation metric. It does not account for balance sheet strength, cash flow quality, or growth sustainability. Always conduct comprehensive due diligence before making investment decisions.
FIBK Cross-Benchmark Valuation
How does the current P/E compare to sector peers and the broader market?
FIBK P/E vs Peers
Community and retail regional banks peers sorted by market cap
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $6B | 22.2 | - | +18%Best | |
| $2B | 11.7 | 3.79 | +5% | |
| $8B | 12.5 | - | -10% | |
| $2B | 12.1 | 1.04 | +16% | |
| $2B | 16.3 | 1.99 | +16% | |
| $10B | 14.7 | 1.63 | +2% | |
| $8B | 14.2 | 1.73 | +13% | |
| $10B | 12.4 | 0.63Best | +12% | |
| $727M | 10.8Lowest | 2.05 | +3% | |
| $5B | 18.0 | 4.00 | +13% |
Lower P/E can signal a discount or weaker growth expectations; PEG adds growth context.
FIBK Historical P/E Data (2025–2026)
Quarterly P/E ratios calculated from closing price and TTM EPS
| Quarter | Period End | Price | TTM EPS | P/E Ratio | vs Avg |
|---|---|---|---|---|---|
| FY2026 Q2 | - | $38.56 | $3.25 | 11.9x | +3% |
| FY2026 Q1 | - | $33.40 | $3.07 | 10.9x | -5% |
| FY2025 Q4 | Dec 31 2025 | $34.60 | $2.95 | 11.7x | +2% |
Average P/E for displayed period: 11.5x
FIBK Chart Terminal
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Intrinsic Valuation
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Historical Returns
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Peer Comparison
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FIBK — Frequently Asked Questions
Quick answers to the most common questions about buying FIBK stock.
What is FIBK's P/E ratio?
First Interstate BancSystem, Inc. (FIBK) trailing twelve-month P/E ratio is 12.3x, based on TTM diluted EPS of $3.35. The 5-year average P/E is 11.5x and the historical range spans 10.9x to 11.9x.
Is FIBK stock overvalued or undervalued?
FIBK trades at 12.3x P/E, near its 5-year average of 11.5x. The 100th percentile ranking within the 10.9x–11.9x historical range places valuation within normal bounds.
Is FIBK stock expensive?
FIBK is fairly valued relative to its own history. The current P/E of 12.3x is near the 5-year average of 11.5x (100th percentile of historical range).
What is FIBK's historical P/E range?
Over the past 5 years, FIBK's P/E ratio has ranged from 10.9x to 11.9x, with a median of 11.7x and an average of 11.5x. The current P/E of 12.3x places the stock at the 100th percentile of this range. Full historical data spans 2025–2026.
How does FIBK's P/E compare to the S&P 500?
FIBK trades at 12.3x P/E versus the S&P 500 median of 25.3x. The 51% discount to the market suggests lower growth expectations or perceived higher risk.
How does FIBK's valuation compare to Financial Services peers?
First Interstate BancSystem, Inc. P/E of 12.3x compares to the Financial Services sector median of 13.9x. The discount suggests lower growth expectations, weaker margins, or higher perceived risk relative to peers. See the peer comparison table on this page for ticker-by-ticker P/E and PEG.
What is FIBK's PEG ratio?
FIBK PEG ratio is 4.02, based on a P/E of 12.3x and EPS growth of 34.2%. A PEG above 2.0 indicates a premium valuation relative to earnings growth — typically considered expensive.
What is FIBK's earnings yield?
FIBK earnings yield is 8.16%, the inverse of its 12.3x P/E ratio. Earnings yield represents the percentage of each dollar invested that the company earns. It can be compared directly to bond yields to assess relative attractiveness of stocks versus fixed income.