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Side-by-side financial comparison of Amphastar Pharmaceuticals, Inc. (AMPH) and Mueller Water Products, Inc. (MWA). Click either name above to swap in a different company.

Mueller Water Products, Inc. is the larger business by last-quarter revenue ($318.2M vs $183.1M, roughly 1.7× Amphastar Pharmaceuticals, Inc.). Mueller Water Products, Inc. runs the higher net margin — 13.6% vs 13.3%, a 0.2% gap on every dollar of revenue. On growth, Mueller Water Products, Inc. posted the faster year-over-year revenue change (4.6% vs -1.8%). Mueller Water Products, Inc. produced more free cash flow last quarter ($44.0M vs $24.6M). Over the past eight quarters, Amphastar Pharmaceuticals, Inc.'s revenue compounded faster (3.2% CAGR vs -5.1%).

Amphastar Pharmaceuticals is a publicly traded American speciality pharmaceutical company. It was incorporated in May 2004 and primarily develops, manufactures, and sells inhalation and intranasal products.

Mueller Water Products, Inc. (MWP) is a publicly traded company headquartered in Atlanta, Georgia. It is one of the largest manufacturers and distributors of fire hydrants, gate valves, and other water infrastructure products in North America. MWP is made up of two business units—Mueller Co. and Mueller Technologies—that oversee more than a dozen brands and affiliates, including Echologics and Mueller Systems.

AMPH vs MWA — Head-to-Head

Bigger by revenue
MWA
MWA
1.7× larger
MWA
$318.2M
$183.1M
AMPH
Growing faster (revenue YoY)
MWA
MWA
+6.4% gap
MWA
4.6%
-1.8%
AMPH
Higher net margin
MWA
MWA
0.2% more per $
MWA
13.6%
13.3%
AMPH
More free cash flow
MWA
MWA
$19.4M more FCF
MWA
$44.0M
$24.6M
AMPH
Faster 2-yr revenue CAGR
AMPH
AMPH
Annualised
AMPH
3.2%
-5.1%
MWA

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
AMPH
AMPH
MWA
MWA
Revenue
$183.1M
$318.2M
Net Profit
$24.4M
$43.2M
Gross Margin
46.8%
37.6%
Operating Margin
19.4%
17.8%
Net Margin
13.3%
13.6%
Revenue YoY
-1.8%
4.6%
Net Profit YoY
-35.7%
22.4%
EPS (diluted)
$0.51
$0.27

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
AMPH
AMPH
MWA
MWA
Q4 25
$183.1M
$318.2M
Q3 25
$191.8M
$380.8M
Q2 25
$174.4M
$380.3M
Q1 25
$170.5M
$364.3M
Q4 24
$186.5M
$304.3M
Q3 24
$191.2M
$348.2M
Q2 24
$182.4M
$356.7M
Q1 24
$171.8M
$353.4M
Net Profit
AMPH
AMPH
MWA
MWA
Q4 25
$24.4M
$43.2M
Q3 25
$17.4M
$52.6M
Q2 25
$31.0M
$52.5M
Q1 25
$25.3M
$51.3M
Q4 24
$38.0M
$35.3M
Q3 24
$40.4M
$10.0M
Q2 24
$37.9M
$47.3M
Q1 24
$43.2M
$44.3M
Gross Margin
AMPH
AMPH
MWA
MWA
Q4 25
46.8%
37.6%
Q3 25
51.4%
36.8%
Q2 25
49.6%
38.3%
Q1 25
50.0%
35.1%
Q4 24
46.5%
33.8%
Q3 24
53.3%
31.8%
Q2 24
52.2%
36.8%
Q1 24
52.4%
36.9%
Operating Margin
AMPH
AMPH
MWA
MWA
Q4 25
19.4%
17.8%
Q3 25
13.2%
18.3%
Q2 25
24.2%
19.4%
Q1 25
21.9%
19.2%
Q4 24
24.2%
15.6%
Q3 24
29.8%
8.2%
Q2 24
30.3%
18.8%
Q1 24
27.9%
18.0%
Net Margin
AMPH
AMPH
MWA
MWA
Q4 25
13.3%
13.6%
Q3 25
9.0%
13.8%
Q2 25
17.8%
13.8%
Q1 25
14.8%
14.1%
Q4 24
20.4%
11.6%
Q3 24
21.1%
2.9%
Q2 24
20.8%
13.3%
Q1 24
25.1%
12.5%
EPS (diluted)
AMPH
AMPH
MWA
MWA
Q4 25
$0.51
$0.27
Q3 25
$0.37
$0.34
Q2 25
$0.64
$0.33
Q1 25
$0.51
$0.33
Q4 24
$0.74
$0.22
Q3 24
$0.78
$0.07
Q2 24
$0.73
$0.30
Q1 24
$0.81
$0.28

Balance Sheet & Financial Strength

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

Metric
AMPH
AMPH
MWA
MWA
Cash + ST InvestmentsLiquidity on hand
$282.8M
Total DebtLower is stronger
$608.7M
Stockholders' EquityBook value
$788.8M
$1.0B
Total Assets
$1.6B
$1.8B
Debt / EquityLower = less leverage
0.77×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
AMPH
AMPH
MWA
MWA
Q4 25
$282.8M
Q3 25
$276.2M
Q2 25
$231.8M
Q1 25
$236.9M
Q4 24
$221.6M
Q3 24
$250.5M
Q2 24
$217.8M
Q1 24
$289.6M
Total Debt
AMPH
AMPH
MWA
MWA
Q4 25
$608.7M
Q3 25
$608.6M
Q2 25
$607.7M
Q1 25
$603.9M
Q4 24
$601.6M
Q3 24
$596.4M
Q2 24
$586.9M
Q1 24
$594.0M
Stockholders' Equity
AMPH
AMPH
MWA
MWA
Q4 25
$788.8M
$1.0B
Q3 25
$776.7M
$981.7M
Q2 25
$757.5M
$929.0M
Q1 25
$751.3M
$873.6M
Q4 24
$732.3M
$834.1M
Q3 24
$727.7M
$810.1M
Q2 24
$713.3M
$791.6M
Q1 24
$672.4M
$754.5M
Total Assets
AMPH
AMPH
MWA
MWA
Q4 25
$1.6B
$1.8B
Q3 25
$1.7B
$1.8B
Q2 25
$1.6B
$1.7B
Q1 25
$1.6B
$1.7B
Q4 24
$1.6B
$1.6B
Q3 24
$1.5B
$1.6B
Q2 24
$1.5B
$1.6B
Q1 24
$1.6B
$1.5B
Debt / Equity
AMPH
AMPH
MWA
MWA
Q4 25
0.77×
Q3 25
0.78×
Q2 25
0.80×
Q1 25
0.80×
Q4 24
0.82×
Q3 24
0.82×
Q2 24
0.82×
Q1 24
0.88×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
AMPH
AMPH
MWA
MWA
Operating Cash FlowLast quarter
$32.9M
$61.2M
Free Cash FlowOCF − Capex
$24.6M
$44.0M
FCF MarginFCF / Revenue
13.4%
13.8%
Capex IntensityCapex / Revenue
4.5%
5.4%
Cash ConversionOCF / Net Profit
1.35×
1.42×
TTM Free Cash FlowTrailing 4 quarters
$121.2M
$173.8M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
AMPH
AMPH
MWA
MWA
Q4 25
$32.9M
$61.2M
Q3 25
$52.6M
$83.5M
Q2 25
$35.6M
$67.4M
Q1 25
$35.1M
$14.3M
Q4 24
$29.0M
$54.1M
Q3 24
$60.0M
$89.3M
Q2 24
$69.1M
$87.3M
Q1 24
$55.3M
$-5.7M
Free Cash Flow
AMPH
AMPH
MWA
MWA
Q4 25
$24.6M
$44.0M
Q3 25
$47.2M
$69.0M
Q2 25
$25.0M
$55.7M
Q1 25
$24.4M
$5.1M
Q4 24
$16.6M
$42.2M
Q3 24
$46.2M
$69.9M
Q2 24
$63.1M
$75.1M
Q1 24
$46.5M
$-15.8M
FCF Margin
AMPH
AMPH
MWA
MWA
Q4 25
13.4%
13.8%
Q3 25
24.6%
18.1%
Q2 25
14.3%
14.6%
Q1 25
14.3%
1.4%
Q4 24
8.9%
13.9%
Q3 24
24.1%
20.1%
Q2 24
34.6%
21.1%
Q1 24
27.1%
-4.5%
Capex Intensity
AMPH
AMPH
MWA
MWA
Q4 25
4.5%
5.4%
Q3 25
2.8%
3.8%
Q2 25
6.1%
3.1%
Q1 25
6.3%
2.5%
Q4 24
6.7%
3.9%
Q3 24
7.2%
5.6%
Q2 24
3.3%
3.4%
Q1 24
5.1%
2.9%
Cash Conversion
AMPH
AMPH
MWA
MWA
Q4 25
1.35×
1.42×
Q3 25
3.03×
1.59×
Q2 25
1.15×
1.28×
Q1 25
1.39×
0.28×
Q4 24
0.76×
1.53×
Q3 24
1.48×
8.93×
Q2 24
1.82×
1.85×
Q1 24
1.28×
-0.13×

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

AMPH
AMPH

Other Products$62.4M34%
Baqsimi$46.7M26%
Primatenemist$27.9M15%
Epinephrine$17.1M9%
Lidocaine$14.9M8%
Glucagon$14.1M8%

MWA
MWA

Water Flow Solutions$173.0M54%
Water Management Solutions$145.2M46%

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