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Side-by-side financial comparison of ADTRAN Holdings, Inc. (ADTN) and Ultragenyx Pharmaceutical Inc. (RARE). Click either name above to swap in a different company.

ADTRAN Holdings, Inc. is the larger business by last-quarter revenue ($291.6M vs $207.3M, roughly 1.4× Ultragenyx Pharmaceutical Inc.). ADTRAN Holdings, Inc. runs the higher net margin — -1.2% vs -62.0%, a 60.8% gap on every dollar of revenue. On growth, Ultragenyx Pharmaceutical Inc. posted the faster year-over-year revenue change (25.9% vs 20.1%). ADTRAN Holdings, Inc. produced more free cash flow last quarter ($30.6M vs $-100.8M). Over the past eight quarters, Ultragenyx Pharmaceutical Inc.'s revenue compounded faster (38.0% 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.

Ultragenyx Pharmaceutical Inc. is an American biopharmaceutical company involved in the research and development of novel products for treatment of rare and ultra-rare genetic diseases for which there are typically no approved treatments and high unmet medical need. The company works with multiple drug modalities including biologics, small molecule, gene therapies, and ASO and mRNAs in the disease categories of bone, endocrine, metabolic, muscle and CNS diseases.

ADTN vs RARE — Head-to-Head

Bigger by revenue
ADTN
ADTN
1.4× larger
ADTN
$291.6M
$207.3M
RARE
Growing faster (revenue YoY)
RARE
RARE
+5.8% gap
RARE
25.9%
20.1%
ADTN
Higher net margin
ADTN
ADTN
60.8% more per $
ADTN
-1.2%
-62.0%
RARE
More free cash flow
ADTN
ADTN
$131.3M more FCF
ADTN
$30.6M
$-100.8M
RARE
Faster 2-yr revenue CAGR
RARE
RARE
Annualised
RARE
38.0%
13.5%
ADTN

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
ADTN
ADTN
RARE
RARE
Revenue
$291.6M
$207.3M
Net Profit
$-3.6M
$-128.6M
Gross Margin
39.0%
Operating Margin
1.5%
-54.7%
Net Margin
-1.2%
-62.0%
Revenue YoY
20.1%
25.9%
Net Profit YoY
92.2%
3.5%
EPS (diluted)
$-0.02
$-1.28

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
RARE
RARE
Q4 25
$291.6M
$207.3M
Q3 25
$279.4M
$159.9M
Q2 25
$265.1M
$166.5M
Q1 25
$247.7M
$139.3M
Q4 24
$242.9M
$164.6M
Q3 24
$227.7M
$139.5M
Q2 24
$226.0M
$147.0M
Q1 24
$226.2M
$108.8M
Net Profit
ADTN
ADTN
RARE
RARE
Q4 25
$-3.6M
$-128.6M
Q3 25
$-10.3M
$-180.4M
Q2 25
$-20.5M
$-115.0M
Q1 25
$-11.3M
$-151.1M
Q4 24
$-46.1M
$-133.2M
Q3 24
$-33.3M
$-133.5M
Q2 24
$-49.7M
$-131.6M
Q1 24
$-330.8M
$-170.7M
Gross Margin
ADTN
ADTN
RARE
RARE
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
RARE
RARE
Q4 25
1.5%
-54.7%
Q3 25
-1.0%
-106.9%
Q2 25
-5.0%
-64.8%
Q1 25
-1.6%
-102.6%
Q4 24
-6.9%
-74.3%
Q3 24
-11.5%
-94.6%
Q2 24
-17.0%
-79.1%
Q1 24
-153.1%
-151.9%
Net Margin
ADTN
ADTN
RARE
RARE
Q4 25
-1.2%
-62.0%
Q3 25
-3.7%
-112.8%
Q2 25
-7.7%
-69.0%
Q1 25
-4.5%
-108.5%
Q4 24
-19.0%
-80.9%
Q3 24
-14.6%
-95.7%
Q2 24
-22.0%
-89.5%
Q1 24
-146.2%
-156.8%
EPS (diluted)
ADTN
ADTN
RARE
RARE
Q4 25
$-0.02
$-1.28
Q3 25
$-0.12
$-1.81
Q2 25
$-0.24
$-1.17
Q1 25
$-0.14
$-1.57
Q4 24
$-0.58
$-1.34
Q3 24
$-0.38
$-1.40
Q2 24
$-0.63
$-1.52
Q1 24
$-4.20
$-2.03

Balance Sheet & Financial Strength

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

Metric
ADTN
ADTN
RARE
RARE
Cash + ST InvestmentsLiquidity on hand
$95.7M
$421.0M
Total DebtLower is stronger
Stockholders' EquityBook value
$145.8M
$-80.0M
Total Assets
$1.2B
$1.5B
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ADTN
ADTN
RARE
RARE
Q4 25
$95.7M
$421.0M
Q3 25
$93.7M
$202.5M
Q2 25
$106.3M
$176.3M
Q1 25
$101.3M
$127.1M
Q4 24
$76.0M
$174.0M
Q3 24
$88.5M
$150.6M
Q2 24
$111.2M
$480.7M
Q1 24
$106.8M
$112.3M
Stockholders' Equity
ADTN
ADTN
RARE
RARE
Q4 25
$145.8M
$-80.0M
Q3 25
$141.6M
$9.2M
Q2 25
$169.6M
$151.3M
Q1 25
$138.9M
$144.2M
Q4 24
$127.0M
$255.0M
Q3 24
$205.6M
$346.8M
Q2 24
$213.6M
$432.4M
Q1 24
$260.8M
$140.3M
Total Assets
ADTN
ADTN
RARE
RARE
Q4 25
$1.2B
$1.5B
Q3 25
$1.2B
$1.2B
Q2 25
$1.2B
$1.3B
Q1 25
$1.2B
$1.3B
Q4 24
$1.2B
$1.5B
Q3 24
$1.3B
$1.5B
Q2 24
$1.3B
$1.6B
Q1 24
$1.3B
$1.3B

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
RARE
RARE
Operating Cash FlowLast quarter
$42.2M
$-99.8M
Free Cash FlowOCF − Capex
$30.6M
$-100.8M
FCF MarginFCF / Revenue
10.5%
-48.6%
Capex IntensityCapex / Revenue
4.0%
0.5%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$98.0M
$-472.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ADTN
ADTN
RARE
RARE
Q4 25
$42.2M
$-99.8M
Q3 25
$12.2M
$-91.4M
Q2 25
$32.2M
$-108.3M
Q1 25
$43.2M
$-166.5M
Q4 24
$2.4M
$-79.3M
Q3 24
$43.3M
$-67.0M
Q2 24
$19.9M
$-77.0M
Q1 24
$37.9M
$-190.7M
Free Cash Flow
ADTN
ADTN
RARE
RARE
Q4 25
$30.6M
$-100.8M
Q3 25
$4.2M
$-92.7M
Q2 25
$27.5M
$-110.7M
Q1 25
$35.8M
$-167.8M
Q4 24
$-895.0K
$-79.5M
Q3 24
$37.1M
$-68.6M
Q2 24
$8.4M
$-79.0M
Q1 24
$24.4M
$-193.9M
FCF Margin
ADTN
ADTN
RARE
RARE
Q4 25
10.5%
-48.6%
Q3 25
1.5%
-58.0%
Q2 25
10.4%
-66.5%
Q1 25
14.4%
-120.5%
Q4 24
-0.4%
-48.3%
Q3 24
16.3%
-49.2%
Q2 24
3.7%
-53.7%
Q1 24
10.8%
-178.2%
Capex Intensity
ADTN
ADTN
RARE
RARE
Q4 25
4.0%
0.5%
Q3 25
2.9%
0.8%
Q2 25
1.8%
1.5%
Q1 25
3.0%
1.0%
Q4 24
1.4%
0.1%
Q3 24
2.7%
1.2%
Q2 24
5.1%
1.4%
Q1 24
6.0%
3.0%

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%

RARE
RARE

Royalty$105.6M51%
Products$101.7M49%

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