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Side-by-side financial comparison of West Pharmaceutical Services (WST) and WATTS WATER TECHNOLOGIES INC (WTS). Click either name above to swap in a different company.

West Pharmaceutical Services is the larger business by last-quarter revenue ($805.0M vs $677.3M, roughly 1.2× WATTS WATER TECHNOLOGIES INC). West Pharmaceutical Services runs the higher net margin — 16.4% vs 14.7%, a 1.7% gap on every dollar of revenue. On growth, WATTS WATER TECHNOLOGIES INC posted the faster year-over-year revenue change (21.4% vs 7.5%). West Pharmaceutical Services produced more free cash flow last quarter ($175.0M vs $6.6M). Over the past eight quarters, West Pharmaceutical Services's revenue compounded faster (7.6% CAGR vs 6.5%).

West Pharmaceutical Services, Inc. is a designer and manufacturer of injectable pharmaceutical packaging and delivery systems. Founded in 1923 by Herman O. West and J.R. Wike of Philadelphia, the company is headquartered in Exton, Pennsylvania. In its early years of development, West produced rubber components for packaging injectable drugs, providing a sterile environment for the producers of penicillin and insulin.

AERCO International, Inc. is a manufacturer and supplier of commercial condensing boilers, high efficiency water heating equipment and energy recovery systems in the HVAC/plumbing industry across a variety of markets including education, lodging, government, office buildings, healthcare, industrial and multifamily housing. In 1949, AERCO introduced the industry's first semi-instantaneous, tankless steam-to-water water heater. In 1988, AERCO introduced the first condensing and fully modulating...

WST vs WTS — Head-to-Head

Bigger by revenue
WST
WST
1.2× larger
WST
$805.0M
$677.3M
WTS
Growing faster (revenue YoY)
WTS
WTS
+13.9% gap
WTS
21.4%
7.5%
WST
Higher net margin
WST
WST
1.7% more per $
WST
16.4%
14.7%
WTS
More free cash flow
WST
WST
$168.4M more FCF
WST
$175.0M
$6.6M
WTS
Faster 2-yr revenue CAGR
WST
WST
Annualised
WST
7.6%
6.5%
WTS

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
WST
WST
WTS
WTS
Revenue
$805.0M
$677.3M
Net Profit
$132.1M
$99.6M
Gross Margin
37.8%
48.1%
Operating Margin
19.5%
19.6%
Net Margin
16.4%
14.7%
Revenue YoY
7.5%
21.4%
Net Profit YoY
1.5%
34.6%
EPS (diluted)
$1.82
$2.97

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
WST
WST
WTS
WTS
Q1 26
$677.3M
Q4 25
$805.0M
$625.1M
Q3 25
$804.6M
$611.7M
Q2 25
$766.5M
$643.7M
Q1 25
$698.0M
$558.0M
Q4 24
$748.8M
$540.4M
Q3 24
$746.9M
$543.6M
Q2 24
$702.1M
$597.3M
Net Profit
WST
WST
WTS
WTS
Q1 26
$99.6M
Q4 25
$132.1M
$83.7M
Q3 25
$140.0M
$82.2M
Q2 25
$131.8M
$100.9M
Q1 25
$89.8M
$74.0M
Q4 24
$130.1M
$67.5M
Q3 24
$136.0M
$69.1M
Q2 24
$111.3M
$82.0M
Gross Margin
WST
WST
WTS
WTS
Q1 26
48.1%
Q4 25
37.8%
49.5%
Q3 25
36.6%
48.8%
Q2 25
35.7%
50.6%
Q1 25
33.2%
48.8%
Q4 24
36.5%
46.7%
Q3 24
35.4%
47.3%
Q2 24
32.8%
47.7%
Operating Margin
WST
WST
WTS
WTS
Q1 26
19.6%
Q4 25
19.5%
18.2%
Q3 25
20.8%
18.2%
Q2 25
20.1%
21.0%
Q1 25
15.3%
15.7%
Q4 24
21.3%
16.5%
Q3 24
21.6%
17.1%
Q2 24
18.0%
18.7%
Net Margin
WST
WST
WTS
WTS
Q1 26
14.7%
Q4 25
16.4%
13.4%
Q3 25
17.4%
13.4%
Q2 25
17.2%
15.7%
Q1 25
12.9%
13.3%
Q4 24
17.4%
12.5%
Q3 24
18.2%
12.7%
Q2 24
15.9%
13.7%
EPS (diluted)
WST
WST
WTS
WTS
Q1 26
$2.97
Q4 25
$1.82
$2.50
Q3 25
$1.92
$2.45
Q2 25
$1.82
$3.01
Q1 25
$1.23
$2.21
Q4 24
$1.78
$2.02
Q3 24
$1.85
$2.06
Q2 24
$1.51
$2.44

Balance Sheet & Financial Strength

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

Metric
WST
WST
WTS
WTS
Cash + ST InvestmentsLiquidity on hand
$791.3M
$374.7M
Total DebtLower is stronger
$202.8M
$197.8M
Stockholders' EquityBook value
$3.2B
$2.1B
Total Assets
$4.3B
$2.9B
Debt / EquityLower = less leverage
0.06×
0.09×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
WST
WST
WTS
WTS
Q1 26
$374.7M
Q4 25
$791.3M
$405.5M
Q3 25
$628.5M
$457.7M
Q2 25
$509.7M
$369.3M
Q1 25
$404.2M
$336.8M
Q4 24
$484.6M
$386.9M
Q3 24
$490.9M
$303.9M
Q2 24
$446.2M
$279.4M
Total Debt
WST
WST
WTS
WTS
Q1 26
$197.8M
Q4 25
$202.8M
Q3 25
$202.7M
Q2 25
$202.6M
Q1 25
$202.6M
Q4 24
$202.6M
Q3 24
$202.6M
Q2 24
$205.8M
Stockholders' Equity
WST
WST
WTS
WTS
Q1 26
$2.1B
Q4 25
$3.2B
$2.0B
Q3 25
$3.1B
$2.0B
Q2 25
$2.9B
$1.9B
Q1 25
$2.7B
$1.8B
Q4 24
$2.7B
$1.7B
Q3 24
$2.8B
$1.7B
Q2 24
$2.6B
$1.6B
Total Assets
WST
WST
WTS
WTS
Q1 26
$2.9B
Q4 25
$4.3B
$2.9B
Q3 25
$4.1B
$2.7B
Q2 25
$4.0B
$2.6B
Q1 25
$3.6B
$2.5B
Q4 24
$3.6B
$2.4B
Q3 24
$3.7B
$2.4B
Q2 24
$3.5B
$2.4B
Debt / Equity
WST
WST
WTS
WTS
Q1 26
0.09×
Q4 25
0.06×
Q3 25
0.07×
Q2 25
0.07×
Q1 25
0.08×
Q4 24
0.08×
Q3 24
0.07×
Q2 24
0.08×

Cash Flow & Capital Efficiency

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

Metric
WST
WST
WTS
WTS
Operating Cash FlowLast quarter
$251.1M
$17.9M
Free Cash FlowOCF − Capex
$175.0M
$6.6M
FCF MarginFCF / Revenue
21.7%
1.0%
Capex IntensityCapex / Revenue
9.5%
Cash ConversionOCF / Net Profit
1.90×
0.18×
TTM Free Cash FlowTrailing 4 quarters
$468.9M
$317.3M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
WST
WST
WTS
WTS
Q1 26
$17.9M
Q4 25
$251.1M
$154.7M
Q3 25
$197.2M
$122.4M
Q2 25
$177.1M
$69.7M
Q1 25
$129.4M
$55.2M
Q4 24
$190.1M
$139.5M
Q3 24
$180.1M
$90.7M
Q2 24
$165.0M
$85.3M
Free Cash Flow
WST
WST
WTS
WTS
Q1 26
$6.6M
Q4 25
$175.0M
$140.3M
Q3 25
$133.9M
$110.9M
Q2 25
$101.9M
$59.5M
Q1 25
$58.1M
$45.6M
Q4 24
$85.2M
$127.5M
Q3 24
$98.8M
$84.3M
Q2 24
$64.8M
$78.5M
FCF Margin
WST
WST
WTS
WTS
Q1 26
1.0%
Q4 25
21.7%
22.4%
Q3 25
16.6%
18.1%
Q2 25
13.3%
9.2%
Q1 25
8.3%
8.2%
Q4 24
11.4%
23.6%
Q3 24
13.2%
15.5%
Q2 24
9.2%
13.1%
Capex Intensity
WST
WST
WTS
WTS
Q1 26
Q4 25
9.5%
2.3%
Q3 25
7.9%
1.9%
Q2 25
9.8%
1.6%
Q1 25
10.2%
1.7%
Q4 24
14.0%
2.2%
Q3 24
10.9%
1.2%
Q2 24
14.3%
1.1%
Cash Conversion
WST
WST
WTS
WTS
Q1 26
0.18×
Q4 25
1.90×
1.85×
Q3 25
1.41×
1.49×
Q2 25
1.34×
0.69×
Q1 25
1.44×
0.75×
Q4 24
1.46×
2.07×
Q3 24
1.32×
1.31×
Q2 24
1.48×
1.04×

Financial Flow Comparison

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

Revenue Breakdown by Segment

WST
WST

Proprietary Products$661.8M82%
Contract Manufactured Products$143.2M18%
Affiliated Entity$3.3M0%

WTS
WTS

segment net$517.8M76%
Other$159.5M24%

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