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Side-by-side financial comparison of FIRST INTERSTATE BANCSYSTEM INC (FIBK) and iRhythm Holdings, Inc. (IRTC). Click either name above to swap in a different company.
FIRST INTERSTATE BANCSYSTEM INC is the larger business by last-quarter revenue ($313.0M vs $208.9M, roughly 1.5× iRhythm Holdings, Inc.). FIRST INTERSTATE BANCSYSTEM INC runs the higher net margin — 34.8% vs 2.7%, a 32.1% gap on every dollar of revenue. On growth, iRhythm Holdings, Inc. posted the faster year-over-year revenue change (27.1% vs 19.8%). Over the past eight quarters, iRhythm Holdings, Inc.'s revenue compounded faster (25.8% CAGR vs 13.7%).
First Interstate BancSystem, Inc. is a financial holding company headquartered in Billings, Montana. It is the parent company of First Interstate Bank, a community bank with locations throughout 14 states within the Western and Midwestern United States. It is the largest bank based in Montana, as measured by total assets.
iRhythm Holdings is a digital healthcare company focused on cardiac care, developing and commercializing wearable ambulatory heart monitoring devices paired with AI-powered analytical tools. It primarily serves healthcare providers and patients across the United States, helping to detect undiagnosed arrhythmias such as atrial fibrillation through convenient long-term heart rhythm tracking that delivers actionable clinical insights.
FIBK vs IRTC — Head-to-Head
Income Statement — Q4 FY2025 vs Q4 FY2025
| Metric | | |
|---|---|---|
| Revenue | $313.0M | $208.9M |
| Net Profit | $108.8M | $5.6M |
| Gross Margin | — | 70.9% |
| Operating Margin | 44.5% | 1.1% |
| Net Margin | 34.8% | 2.7% |
| Revenue YoY | 19.8% | 27.1% |
| Net Profit YoY | 108.8% | 518.5% |
| EPS (diluted) | $1.07 | $0.18 |
Green = leading value per metric. Periods may differ when fiscal calendars don't align.
8-Quarter Revenue & Profit Trend
Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.
| Q4 25 | $313.0M | $208.9M | ||
| Q3 25 | $250.5M | $192.9M | ||
| Q2 25 | $248.3M | $186.7M | ||
| Q1 25 | $247.0M | $158.7M | ||
| Q4 24 | $261.3M | $164.3M | ||
| Q3 24 | $251.9M | $147.5M | ||
| Q2 24 | $244.3M | $148.0M | ||
| Q1 24 | $242.2M | $131.9M |
| Q4 25 | $108.8M | $5.6M | ||
| Q3 25 | $71.4M | $-5.2M | ||
| Q2 25 | $71.7M | $-14.2M | ||
| Q1 25 | $50.2M | $-30.7M | ||
| Q4 24 | $52.1M | $-1.3M | ||
| Q3 24 | $55.5M | $-46.2M | ||
| Q2 24 | $60.0M | $-20.1M | ||
| Q1 24 | $58.4M | $-45.7M |
| Q4 25 | — | 70.9% | ||
| Q3 25 | — | 71.1% | ||
| Q2 25 | — | 71.2% | ||
| Q1 25 | — | 68.8% | ||
| Q4 24 | — | 70.0% | ||
| Q3 24 | — | 68.8% | ||
| Q2 24 | — | 69.9% | ||
| Q1 24 | — | 66.3% |
| Q4 25 | 44.5% | 1.1% | ||
| Q3 25 | 37.0% | -4.4% | ||
| Q2 25 | 37.7% | -10.0% | ||
| Q1 25 | 26.9% | -20.5% | ||
| Q4 24 | 25.5% | -2.5% | ||
| Q3 24 | 28.9% | -34.1% | ||
| Q2 24 | 32.1% | -15.5% | ||
| Q1 24 | 31.7% | -28.9% |
| Q4 25 | 34.8% | 2.7% | ||
| Q3 25 | 28.5% | -2.7% | ||
| Q2 25 | 28.9% | -7.6% | ||
| Q1 25 | 20.3% | -19.3% | ||
| Q4 24 | 19.9% | -0.8% | ||
| Q3 24 | 22.0% | -31.3% | ||
| Q2 24 | 24.6% | -13.6% | ||
| Q1 24 | 24.1% | -34.6% |
| Q4 25 | $1.07 | $0.18 | ||
| Q3 25 | $0.69 | $-0.16 | ||
| Q2 25 | $0.69 | $-0.44 | ||
| Q1 25 | $0.49 | $-0.97 | ||
| Q4 24 | $0.50 | $-0.03 | ||
| Q3 24 | $0.54 | $-1.48 | ||
| Q2 24 | $0.58 | $-0.65 | ||
| Q1 24 | $0.57 | $-1.47 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | — | $583.8M |
| Total DebtLower is stronger | $146.3M | — |
| Stockholders' EquityBook value | $3.4B | $152.7M |
| Total Assets | $26.6B | $1.0B |
| Debt / EquityLower = less leverage | 0.04× | — |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | — | $583.8M | ||
| Q3 25 | — | $565.2M | ||
| Q2 25 | — | $545.5M | ||
| Q1 25 | — | $520.6M | ||
| Q4 24 | — | $535.6M | ||
| Q3 24 | — | $522.0M | ||
| Q2 24 | — | $561.5M | ||
| Q1 24 | — | $569.1M |
| Q4 25 | $146.3M | — | ||
| Q3 25 | $146.2M | — | ||
| Q2 25 | $252.0M | — | ||
| Q1 25 | — | — | ||
| Q4 24 | $132.2M | — | ||
| Q3 24 | $137.3M | — | ||
| Q2 24 | $383.4M | — | ||
| Q1 24 | $370.8M | — |
| Q4 25 | $3.4B | $152.7M | ||
| Q3 25 | $3.4B | $121.9M | ||
| Q2 25 | $3.4B | $103.7M | ||
| Q1 25 | $3.4B | $86.7M | ||
| Q4 24 | $3.3B | $90.9M | ||
| Q3 24 | $3.4B | $71.8M | ||
| Q2 24 | $3.2B | $99.2M | ||
| Q1 24 | $3.2B | $90.3M |
| Q4 25 | $26.6B | $1.0B | ||
| Q3 25 | $27.3B | $995.2M | ||
| Q2 25 | $27.6B | $964.0M | ||
| Q1 25 | $28.3B | $926.1M | ||
| Q4 24 | $29.1B | $931.4M | ||
| Q3 24 | $29.6B | $909.7M | ||
| Q2 24 | $30.3B | $919.2M | ||
| Q1 24 | $30.1B | $909.8M |
| Q4 25 | 0.04× | — | ||
| Q3 25 | 0.04× | — | ||
| Q2 25 | 0.07× | — | ||
| Q1 25 | — | — | ||
| Q4 24 | 0.04× | — | ||
| Q3 24 | 0.04× | — | ||
| Q2 24 | 0.12× | — | ||
| Q1 24 | 0.12× | — |
Cash Flow & Capital Efficiency
How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.
| Metric | | |
|---|---|---|
| Operating Cash FlowLast quarter | $305.6M | $26.2M |
| Free Cash FlowOCF − Capex | — | $14.5M |
| FCF MarginFCF / Revenue | — | 6.9% |
| Capex IntensityCapex / Revenue | — | 5.6% |
| Cash ConversionOCF / Net Profit | 2.81× | 4.70× |
| TTM Free Cash FlowTrailing 4 quarters | — | $34.5M |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $305.6M | $26.2M | ||
| Q3 25 | $91.7M | $34.9M | ||
| Q2 25 | $68.1M | $27.7M | ||
| Q1 25 | $78.5M | $-7.9M | ||
| Q4 24 | $355.0M | $19.2M | ||
| Q3 24 | $89.9M | $24.3M | ||
| Q2 24 | $82.3M | $11.8M | ||
| Q1 24 | $87.6M | $-52.0M |
| Q4 25 | — | $14.5M | ||
| Q3 25 | — | $20.1M | ||
| Q2 25 | — | $17.3M | ||
| Q1 25 | — | $-17.3M | ||
| Q4 24 | — | $12.4M | ||
| Q3 24 | — | $15.5M | ||
| Q2 24 | — | $3.4M | ||
| Q1 24 | — | $-61.8M |
| Q4 25 | — | 6.9% | ||
| Q3 25 | — | 10.4% | ||
| Q2 25 | — | 9.3% | ||
| Q1 25 | — | -10.9% | ||
| Q4 24 | — | 7.5% | ||
| Q3 24 | — | 10.5% | ||
| Q2 24 | — | 2.3% | ||
| Q1 24 | — | -46.8% |
| Q4 25 | — | 5.6% | ||
| Q3 25 | — | 7.7% | ||
| Q2 25 | — | 5.6% | ||
| Q1 25 | — | 5.9% | ||
| Q4 24 | — | 4.2% | ||
| Q3 24 | — | 6.0% | ||
| Q2 24 | — | 5.7% | ||
| Q1 24 | — | 7.4% |
| Q4 25 | 2.81× | 4.70× | ||
| Q3 25 | 1.28× | — | ||
| Q2 25 | 0.95× | — | ||
| Q1 25 | 1.56× | — | ||
| Q4 24 | 6.81× | — | ||
| Q3 24 | 1.62× | — | ||
| Q2 24 | 1.37× | — | ||
| Q1 24 | 1.50× | — |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
Revenue Breakdown by Segment
FIBK
Segment breakdown not available.
IRTC
| Commercial Payors | $111.7M | 53% |
| Centers For Medicare And Medicaid | $49.2M | 24% |
| Healthcare Institutions | $34.3M | 16% |
| Non Contracted Third Party Payors | $13.7M | 7% |
