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Side-by-side financial comparison of FISERV INC (FISV) and Vistra Corp. (VST). Click either name above to swap in a different company.

FISERV INC is the larger business by last-quarter revenue ($5.3B vs $4.8B, roughly 1.1× Vistra Corp.). FISERV INC runs the higher net margin — 15.3% vs 4.8%, a 10.5% gap on every dollar of revenue. On growth, Vistra Corp. posted the faster year-over-year revenue change (31.2% vs 0.6%). FISERV INC produced more free cash flow last quarter ($1.5B vs $596.0M). Over the past eight quarters, Vistra Corp.'s revenue compounded faster (23.3% CAGR vs 4.0%).

Fiserv, Inc. is an American multinational financial technology company headquartered in Milwaukee, Wisconsin. The company processes debit and credit card transactions, loyalty programs, loans, electronic bill pay, wires and ACH transfers, check deposits, and ATM transactions on behalf of banking institutions. The company also produces debit and credit cards and point of sale terminals.

Vistra may refer to either of two companies:Vistra, a corporate services company based in Hong Kong Vistra Corp, an energy company based in Texas

FISV vs VST — Head-to-Head

Bigger by revenue
FISV
FISV
1.1× larger
FISV
$5.3B
$4.8B
VST
Growing faster (revenue YoY)
VST
VST
+30.6% gap
VST
31.2%
0.6%
FISV
Higher net margin
FISV
FISV
10.5% more per $
FISV
15.3%
4.8%
VST
More free cash flow
FISV
FISV
$906.0M more FCF
FISV
$1.5B
$596.0M
VST
Faster 2-yr revenue CAGR
VST
VST
Annualised
VST
23.3%
4.0%
FISV

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
FISV
FISV
VST
VST
Revenue
$5.3B
$4.8B
Net Profit
$811.0M
$233.0M
Gross Margin
Operating Margin
24.4%
9.9%
Net Margin
15.3%
4.8%
Revenue YoY
0.6%
31.2%
Net Profit YoY
-13.5%
-47.2%
EPS (diluted)
$1.51
$0.55

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
FISV
FISV
VST
VST
Q4 25
$5.3B
$4.8B
Q3 25
$5.3B
$4.8B
Q2 25
$5.5B
$3.8B
Q1 25
$5.1B
$4.3B
Q4 24
$5.3B
$3.7B
Q3 24
$5.2B
$4.3B
Q2 24
$5.1B
$3.6B
Q1 24
$4.9B
$3.2B
Net Profit
FISV
FISV
VST
VST
Q4 25
$811.0M
$233.0M
Q3 25
$792.0M
$652.0M
Q2 25
$1.0B
$327.0M
Q1 25
$851.0M
$-268.0M
Q4 24
$938.0M
$441.0M
Q3 24
$564.0M
$1.9B
Q2 24
$894.0M
$365.0M
Q1 24
$735.0M
$-35.0M
Operating Margin
FISV
FISV
VST
VST
Q4 25
24.4%
9.9%
Q3 25
27.3%
21.7%
Q2 25
30.7%
13.7%
Q1 25
27.2%
-2.8%
Q4 24
31.8%
16.4%
Q3 24
30.7%
59.6%
Q2 24
28.0%
22.5%
Q1 24
24.2%
2.7%
Net Margin
FISV
FISV
VST
VST
Q4 25
15.3%
4.8%
Q3 25
15.0%
13.6%
Q2 25
18.6%
8.7%
Q1 25
16.6%
-6.3%
Q4 24
17.9%
12.0%
Q3 24
10.8%
43.5%
Q2 24
17.5%
10.1%
Q1 24
15.1%
-1.1%
EPS (diluted)
FISV
FISV
VST
VST
Q4 25
$1.51
$0.55
Q3 25
$1.46
$1.75
Q2 25
$1.86
$0.81
Q1 25
$1.51
$-0.93
Q4 24
$1.63
$1.09
Q3 24
$0.98
$5.25
Q2 24
$1.53
$0.90
Q1 24
$1.24
$-0.24

Balance Sheet & Financial Strength

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

Metric
FISV
FISV
VST
VST
Cash + ST InvestmentsLiquidity on hand
$798.0M
$785.0M
Total DebtLower is stronger
$27.8B
$15.8B
Stockholders' EquityBook value
$25.8B
$5.1B
Total Assets
$80.1B
$41.5B
Debt / EquityLower = less leverage
1.08×
3.11×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
FISV
FISV
VST
VST
Q4 25
$798.0M
$785.0M
Q3 25
$1.1B
$602.0M
Q2 25
$999.0M
$458.0M
Q1 25
$1.2B
$561.0M
Q4 24
$1.2B
$1.2B
Q3 24
$1.2B
$905.0M
Q2 24
$1.2B
$1.6B
Q1 24
$1.2B
$1.1B
Total Debt
FISV
FISV
VST
VST
Q4 25
$27.8B
$15.8B
Q3 25
$28.9B
$15.8B
Q2 25
$28.1B
$15.5B
Q1 25
$27.0B
$15.4B
Q4 24
$23.7B
$15.4B
Q3 24
$24.1B
$13.9B
Q2 24
$24.4B
$13.9B
Q1 24
$23.8B
$14.7B
Stockholders' Equity
FISV
FISV
VST
VST
Q4 25
$25.8B
$5.1B
Q3 25
$25.1B
$5.2B
Q2 25
$25.2B
$4.8B
Q1 25
$25.9B
$4.8B
Q4 24
$27.1B
$5.6B
Q3 24
$27.8B
$5.4B
Q2 24
$28.2B
$5.6B
Q1 24
$28.8B
$5.7B
Total Assets
FISV
FISV
VST
VST
Q4 25
$80.1B
$41.5B
Q3 25
$79.4B
$38.0B
Q2 25
$81.5B
$38.1B
Q1 25
$80.4B
$38.2B
Q4 24
$77.2B
$37.8B
Q3 24
$79.8B
$37.9B
Q2 24
$93.4B
$39.1B
Q1 24
$92.7B
$38.2B
Debt / Equity
FISV
FISV
VST
VST
Q4 25
1.08×
3.11×
Q3 25
1.15×
3.02×
Q2 25
1.11×
3.22×
Q1 25
1.04×
3.20×
Q4 24
0.88×
2.77×
Q3 24
0.87×
2.56×
Q2 24
0.87×
2.49×
Q1 24
0.82×
2.60×

Cash Flow & Capital Efficiency

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

Metric
FISV
FISV
VST
VST
Operating Cash FlowLast quarter
$1.9B
$1.4B
Free Cash FlowOCF − Capex
$1.5B
$596.0M
FCF MarginFCF / Revenue
28.4%
12.4%
Capex IntensityCapex / Revenue
8.4%
17.4%
Cash ConversionOCF / Net Profit
2.40×
6.15×
TTM Free Cash FlowTrailing 4 quarters
$4.3B
$1.3B

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
FISV
FISV
VST
VST
Q4 25
$1.9B
$1.4B
Q3 25
$1.8B
$1.5B
Q2 25
$1.7B
$572.0M
Q1 25
$648.0M
$599.0M
Q4 24
$2.2B
$1.4B
Q3 24
$2.2B
$1.7B
Q2 24
$1.3B
$1.2B
Q1 24
$831.0M
$312.0M
Free Cash Flow
FISV
FISV
VST
VST
Q4 25
$1.5B
$596.0M
Q3 25
$1.3B
$1.0B
Q2 25
$1.2B
$-118.0M
Q1 25
$313.0M
$-169.0M
Q4 24
$1.8B
$923.0M
Q3 24
$1.8B
$1.0B
Q2 24
$993.0M
$698.0M
Q1 24
$411.0M
$-153.0M
FCF Margin
FISV
FISV
VST
VST
Q4 25
28.4%
12.4%
Q3 25
24.7%
21.1%
Q2 25
21.5%
-3.1%
Q1 25
6.1%
-4.0%
Q4 24
34.7%
25.2%
Q3 24
35.2%
23.4%
Q2 24
19.4%
19.4%
Q1 24
8.4%
-4.8%
Capex Intensity
FISV
FISV
VST
VST
Q4 25
8.4%
17.4%
Q3 25
9.6%
9.6%
Q2 25
8.7%
18.4%
Q1 25
6.5%
18.1%
Q4 24
7.6%
11.7%
Q3 24
7.7%
15.8%
Q2 24
6.8%
13.8%
Q1 24
8.6%
14.7%
Cash Conversion
FISV
FISV
VST
VST
Q4 25
2.40×
6.15×
Q3 25
2.28×
2.25×
Q2 25
1.62×
1.75×
Q1 25
0.76×
Q4 24
2.37×
3.07×
Q3 24
3.97×
0.90×
Q2 24
1.50×
3.28×
Q1 24
1.13×

Financial Flow Comparison

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

Revenue Breakdown by Segment

FISV
FISV

Small Business$1.7B32%
Products$1.0B19%
Digital Payments$960.0M18%
Issuing$792.0M15%
Enterprise$587.0M11%
Processing$265.0M5%
Affiliated Entity$18.0M0%

VST
VST

Retail Energy Charge In ERCOT$2.1B43%
Retail Energy Charge In Northeast Midwest$1.2B24%
East Segment$1.1B24%
Hedging Revenue Realized$170.0M4%
Revenue From Other Wholesale Contracts$116.0M2%
Transferable Production Tax Credit Revenues$78.0M2%
West Segment$77.0M2%
Intersegment Sales$25.0M1%

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