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Side-by-side financial comparison of ADTRAN Holdings, Inc. (ADTN) and FIRST INTERSTATE BANCSYSTEM INC (FIBK). 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 $291.6M, roughly 1.1× ADTRAN Holdings, Inc.). FIRST INTERSTATE BANCSYSTEM INC runs the higher net margin — 34.8% vs -1.2%, a 36.0% gap on every dollar of revenue. On growth, ADTRAN Holdings, Inc. posted the faster year-over-year revenue change (20.1% vs 19.8%). Over the past eight quarters, FIRST INTERSTATE BANCSYSTEM INC's revenue compounded faster (13.7% CAGR vs 13.5%).

Adtran, Inc. is an American fiber networking and telecommunications company headquartered in Huntsville, Alabama. It is a vendor of both residential and enterprise networking equipment, along with administrative software for network management and deployment. Its customers include communications service providers, governments, enterprises and utilities.

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.

ADTN vs FIBK — Head-to-Head

Bigger by revenue
FIBK
FIBK
1.1× larger
FIBK
$313.0M
$291.6M
ADTN
Growing faster (revenue YoY)
ADTN
ADTN
+0.3% gap
ADTN
20.1%
19.8%
FIBK
Higher net margin
FIBK
FIBK
36.0% more per $
FIBK
34.8%
-1.2%
ADTN
Faster 2-yr revenue CAGR
FIBK
FIBK
Annualised
FIBK
13.7%
13.5%
ADTN

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
ADTN
ADTN
FIBK
FIBK
Revenue
$291.6M
$313.0M
Net Profit
$-3.6M
$108.8M
Gross Margin
39.0%
Operating Margin
1.5%
44.5%
Net Margin
-1.2%
34.8%
Revenue YoY
20.1%
19.8%
Net Profit YoY
92.2%
108.8%
EPS (diluted)
$-0.02
$1.07

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.

Revenue
ADTN
ADTN
FIBK
FIBK
Q4 25
$291.6M
$313.0M
Q3 25
$279.4M
$250.5M
Q2 25
$265.1M
$248.3M
Q1 25
$247.7M
$247.0M
Q4 24
$242.9M
$261.3M
Q3 24
$227.7M
$251.9M
Q2 24
$226.0M
$244.3M
Q1 24
$226.2M
$242.2M
Net Profit
ADTN
ADTN
FIBK
FIBK
Q4 25
$-3.6M
$108.8M
Q3 25
$-10.3M
$71.4M
Q2 25
$-20.5M
$71.7M
Q1 25
$-11.3M
$50.2M
Q4 24
$-46.1M
$52.1M
Q3 24
$-33.3M
$55.5M
Q2 24
$-49.7M
$60.0M
Q1 24
$-330.8M
$58.4M
Gross Margin
ADTN
ADTN
FIBK
FIBK
Q4 25
39.0%
Q3 25
38.3%
Q2 25
37.3%
Q1 25
38.4%
Q4 24
36.9%
Q3 24
36.5%
Q2 24
36.0%
Q1 24
31.1%
Operating Margin
ADTN
ADTN
FIBK
FIBK
Q4 25
1.5%
44.5%
Q3 25
-1.0%
37.0%
Q2 25
-5.0%
37.7%
Q1 25
-1.6%
26.9%
Q4 24
-6.9%
25.5%
Q3 24
-11.5%
28.9%
Q2 24
-17.0%
32.1%
Q1 24
-153.1%
31.7%
Net Margin
ADTN
ADTN
FIBK
FIBK
Q4 25
-1.2%
34.8%
Q3 25
-3.7%
28.5%
Q2 25
-7.7%
28.9%
Q1 25
-4.5%
20.3%
Q4 24
-19.0%
19.9%
Q3 24
-14.6%
22.0%
Q2 24
-22.0%
24.6%
Q1 24
-146.2%
24.1%
EPS (diluted)
ADTN
ADTN
FIBK
FIBK
Q4 25
$-0.02
$1.07
Q3 25
$-0.12
$0.69
Q2 25
$-0.24
$0.69
Q1 25
$-0.14
$0.49
Q4 24
$-0.58
$0.50
Q3 24
$-0.38
$0.54
Q2 24
$-0.63
$0.58
Q1 24
$-4.20
$0.57

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
ADTN
ADTN
FIBK
FIBK
Cash + ST InvestmentsLiquidity on hand
$95.7M
Total DebtLower is stronger
$146.3M
Stockholders' EquityBook value
$145.8M
$3.4B
Total Assets
$1.2B
$26.6B
Debt / EquityLower = less leverage
0.04×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ADTN
ADTN
FIBK
FIBK
Q4 25
$95.7M
Q3 25
$93.7M
Q2 25
$106.3M
Q1 25
$101.3M
Q4 24
$76.0M
Q3 24
$88.5M
Q2 24
$111.2M
Q1 24
$106.8M
Total Debt
ADTN
ADTN
FIBK
FIBK
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
Stockholders' Equity
ADTN
ADTN
FIBK
FIBK
Q4 25
$145.8M
$3.4B
Q3 25
$141.6M
$3.4B
Q2 25
$169.6M
$3.4B
Q1 25
$138.9M
$3.4B
Q4 24
$127.0M
$3.3B
Q3 24
$205.6M
$3.4B
Q2 24
$213.6M
$3.2B
Q1 24
$260.8M
$3.2B
Total Assets
ADTN
ADTN
FIBK
FIBK
Q4 25
$1.2B
$26.6B
Q3 25
$1.2B
$27.3B
Q2 25
$1.2B
$27.6B
Q1 25
$1.2B
$28.3B
Q4 24
$1.2B
$29.1B
Q3 24
$1.3B
$29.6B
Q2 24
$1.3B
$30.3B
Q1 24
$1.3B
$30.1B
Debt / Equity
ADTN
ADTN
FIBK
FIBK
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
ADTN
ADTN
FIBK
FIBK
Operating Cash FlowLast quarter
$42.2M
$305.6M
Free Cash FlowOCF − Capex
$30.6M
FCF MarginFCF / Revenue
10.5%
Capex IntensityCapex / Revenue
4.0%
Cash ConversionOCF / Net Profit
2.81×
TTM Free Cash FlowTrailing 4 quarters
$98.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ADTN
ADTN
FIBK
FIBK
Q4 25
$42.2M
$305.6M
Q3 25
$12.2M
$91.7M
Q2 25
$32.2M
$68.1M
Q1 25
$43.2M
$78.5M
Q4 24
$2.4M
$355.0M
Q3 24
$43.3M
$89.9M
Q2 24
$19.9M
$82.3M
Q1 24
$37.9M
$87.6M
Free Cash Flow
ADTN
ADTN
FIBK
FIBK
Q4 25
$30.6M
Q3 25
$4.2M
Q2 25
$27.5M
Q1 25
$35.8M
Q4 24
$-895.0K
Q3 24
$37.1M
Q2 24
$8.4M
Q1 24
$24.4M
FCF Margin
ADTN
ADTN
FIBK
FIBK
Q4 25
10.5%
Q3 25
1.5%
Q2 25
10.4%
Q1 25
14.4%
Q4 24
-0.4%
Q3 24
16.3%
Q2 24
3.7%
Q1 24
10.8%
Capex Intensity
ADTN
ADTN
FIBK
FIBK
Q4 25
4.0%
Q3 25
2.9%
Q2 25
1.8%
Q1 25
3.0%
Q4 24
1.4%
Q3 24
2.7%
Q2 24
5.1%
Q1 24
6.0%
Cash Conversion
ADTN
ADTN
FIBK
FIBK
Q4 25
2.81×
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

ADTN
ADTN

Subscriber Solutions$96.2M33%
Optical Networking Solutions$81.8M28%
Access Aggregation Solutions$64.6M22%
Services And Support$48.9M17%

FIBK
FIBK

Segment breakdown not available.

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