WEX vs ACIW Stock Comparison

Wex and Aci Worldwide Prices as of Oct 27, 2026 Peers: Industry group
WEX WEX Inc.
$186.17 +4.4% 1M +15.7% 1Y
Market cap
$6.39B
P/E
18.4x
Revenue (TTM)
$2.79B
Div. yield
–
Payment Processing Technology
7 wins
ACIW Aci Worldwide, Inc.
$54.66 +10.4% 1M +8.9% 1Y
Market cap
$5.53B
P/E
24.6x
Revenue (TTM)
$1.82B
Div. yield
–
Payment Processing Technology
4 wins

Head to Head

11 decided of 12

Wex leads on 7 of the 12 questions below (Wex 7, Aci Worldwide 4). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionWEXACIWLeader
Larger companyMarket capitalisation $6.39B $5.53B WEX
Cheaper on earningsLower P/E, profitable companies only 18.4x 24.6x WEX
Cheaper on forward earningsLower price / next fiscal year consensus EPS 8.7x 19.7x WEX
Faster revenue growthRevenue growth, trailing twelve months +7.5% +7.0% WEX
More profitableNet margin, trailing twelve months 12.6% 12.4% WEX
Better return on capitalReturn on invested capital 7.8% 10.8% ACIW
Less leveragedLower net debt / EBITDA -0.7x 1.9x WEX
Higher dividend yieldTrailing dividend yield — — –
Better 1-year returnPrice return, last 12 months +15.7% +8.9% WEX
Better 5-year returnAnnualised price return, 5 years +3.0%/yr +12.0%/yr ACIW
Less volatileAnnualised volatility, 1 year 41.7% 34.9% ACIW
Higher overall scoreMean of the five percentile scores vs peers 54/100 68/100 ACIW

Percentile Scorecard

WEXACIW

Each axis is the mean percentile of its metrics against the company's industry group. 100 is the best in the group, 50 the middle.

Scores by Axis

AxisWEXACIW
Valuation 71 #29 of 99 77 #24 of 99
Growth 46 #51 of 94 69 #30 of 94
Profitability 72 #26 of 90 80 #19 of 90
Financial Health 32 #72 of 105 60 #43 of 105
Shareholder Returns 47 #33 of 61 57 #27 of 61
Overall 54 68
  • WEX ranked among 109 companies in Fintech
  • ACIW ranked among 109 companies in Fintech

Price Performance

Price return, split-adjusted, before dividends. Click a name to hide or show it.

Returns

PeriodWEXACIWSPY
1 month +4.4%+10.4% -0.2%
3 months +1.8%-8.9% +3.9%
6 months +22.1%+24.4% +8.2%
Year to date +25.0%+14.3% +12.9%
1 year +15.7%+8.9% +12.3%
3 years +14.0%+176.8% +87.4%
3 years, per year +4.5%+40.4% +23.3%
5 years +15.7%+76.4% +67.9%
5 years, per year +3.0%+12.0% +10.9%
10 years +65.1%+192.3% +261.1%
10 years, per year +5.1%+11.3% +13.7%

Risk

MeasureWEXACIWSPY
Volatility, 1Y 41.7%34.9% 12.7%
Downside volatility, 1Y 44.6%36.5% 12.7%
Beta vs S&P 500, 1Y 0.290.35 1.00
Return / volatility, 1Y 0.380.25 0.97
Max drawdown, 5Y -53.2%-44.2% -25.4%
From 52-week high -8.4%-9.2% -1.2%
52-week high $203.22$60.18 $779.14
52-week low $126.86$38.47 $631.97

Valuation History

Weekly multiples on trailing twelve-month fundamentals. Negative or extreme readings (a loss year, a collapsed denominator) are left out so the chart stays readable.

MultipleWEXACIW
P/E now vs peer median 18.4xmedian 20.0x 24.6xmedian 20.0x
P/S now vs peer median 2.3xmedian 2.3x 3.0xmedian 2.3x
EV/EBITDA now vs peer median 5.4xmedian 17.5x 17.5xmedian 17.5x
P/FCF now vs peer median 58.9xmedian 15.9x 17.8xmedian 15.9x
P/B now vs peer median 4.7xmedian 2.0x 3.7xmedian 2.0x
PEG now vs peer median 0.66median 1.03 0.51median 1.03

Financial History

Reported figures by fiscal period, placed on the calendar year (or quarter) each period ended in, so companies with different fiscal years line up.

Trailing twelve monthsWEXACIW
Revenue $2.79B $1.82B
Gross profit $1.66B $893.35M
Operating income $711.30M $338.68M
Net income $350.80M $225.69M
Free cash flow $108.50M $311.41M
R&D – $179.52M
EPS (diluted) $10.05 $2.22
Cash & equivalents $1.16B $167.40M
Total debt $5.36B $822.18M
Shares (diluted) 34.90M 101.68M
Enterprise value -$15.31B $4.81B

All Metrics

58 metrics · best in bold

Bold marks the best reading: the lowest positive value for multiples, leverage and payout, the highest for everything else. The bar under each value is its percentile against that company's own peers. Hover a value for its rank and the peer median.

Valuation

12 metrics
MetricWEXACIW
P/E 18.4x 24.6x
P/FCF 58.9x 17.8x
P/Operating cash flow 24.3x 16.8x
P/S 2.3x 3.0x
P/B 4.7x 3.7x
P/Tangible book 22.0x 3.7x
EV/EBITDA 5.4x 17.5x
EV/EBIT 7.9x 18.3x
EV/Revenue 2.0x 3.4x
EV/FCF 52.0x 19.9x
EV/Operating cash flow 21.5x 18.8x
PEG (3Y EPS CAGR) 0.66 0.51

Growth

14 metrics
MetricWEXACIW
Revenue growth (1Y) 7.5% 7.0%
Revenue CAGR (3Y) 4.2% 9.9%
Gross profit growth (1Y) 7.5% 4.5%
Gross profit CAGR (3Y) 3.9% 10.6%
Operating income growth (1Y) 6.5% 0.1%
Operating income CAGR (3Y) 13.2% 34.9%
Net income growth (1Y) 14.5% -10.1%
Net income CAGR (3Y) 19.1% 44.8%
EPS growth (1Y) 12.9% -7.1%
EPS CAGR (3Y) 28.0% 48.0%
Operating cash flow growth (1Y) -38.1% 6.9%
Operating cash flow CAGR (3Y) -37.9% 35.3%
Free cash flow growth (1Y) -61.8% 6.0%
Free cash flow CAGR (3Y) -51.8% 37.8%

Profitability

14 metrics
MetricWEXACIW
Gross margin 59.6% 49.1%
EBITDA margin 37.3% 19.4%
Operating margin 25.5% 18.6%
Pretax margin 17.4% 16.8%
Net margin 12.6% 12.4%
FCF margin 3.9% 17.1%
Operating cash flow margin 9.4% 18.1%
Return on equity 26.8% 15.1%
Return on assets 2.2% 7.3%
Return on invested capital 7.8% 10.8%
Return on capital employed 15.3% 14.3%
Asset turnover 0.2x 0.6x
Cash conversion (OCF / net income) 0.7x 1.5x
Stock comp / revenue 4.3% 4.3%

Financial Health

11 metrics
MetricWEXACIW
Debt / assets 32.5% 26.6%
Debt / equity 4.0x 0.5x
Net debt / EBITDA -0.7x 1.9x
Debt / FCF 49.4x 2.6x
Liabilities / assets 91.9% 51.6%
Equity / assets 8.1% 48.4%
Interest coverage 3.1x 6.4x
Current ratio 1.0x 1.6x
Quick ratio 1.0x 2.0x
Cash ratio 0.5x 0.2x
Altman Z-score 0.82 4.05

Shareholder Returns

7 metrics
MetricWEXACIW
Dividend yield – –
Net buyback yield 1.0% 3.0%
Shareholder yield 1.0% 3.0%
Payout ratio (earnings) – –
Payout ratio (FCF) – –
Dividend growth (1Y) – –
Dividend CAGR (3Y) – –

Analyst Estimates

Solid lines are reported fiscal-year results; dashed lines are the consensus for the years ahead. Hover a year for the analysts' high and low, and how each result compared with its estimate.

ConsensusWEXACIW
Forward P/E 8.7xFY2026 19.7xFY2026
EPS, next fiscal year $21.31FY2026 $2.77FY2026
EPS growth, next FY +32.4%FY2026 +28.2%FY2026
EPS growth, the year after -6.7% +12.6%
Revenue, next fiscal year $2.97BFY2026 $1.81BFY2026
Revenue growth, next FY +11.5%FY2026 +3.0%FY2026
Revenue growth, the year after -3.1% +20.2%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersWEXACIW
Held by institutions 100.0% 100.0%
Institutions holding 417 378
Change in shares held, QoQ +2.5% +3.5%
Institutions buying 189 198
Institutions selling 166 130
Buyers to sellers 1.14 1.52

Return Correlation

Daily returns, last 12 months

1.00 means two stocks move in lockstep, 0 that they move independently. Pairs below about 0.5 diversify each other.

WEXACIW
WEX 1.00 0.43
ACIW 0.43 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, WEX and ACIW?

Wex (WEX) is the largest by market capitalisation: Wex (WEX) $6.39B, Aci Worldwide (ACIW) $5.53B.

Which stock is cheaper, WEX and ACIW?

Wex (WEX) trades on the lowest price-to-earnings ratio (Wex (WEX) 18.4x, Aci Worldwide (ACIW) 24.6x). On next year's consensus earnings, Wex (WEX) is cheapest (Wex (WEX) 8.7x, Aci Worldwide (ACIW) 19.7x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Wex (WEX) grew revenue fastest over the trailing twelve months: Wex (WEX) +7.5%, Aci Worldwide (ACIW) +7.0%.

Which company is more profitable?

Wex (WEX) has the highest net margin (Wex (WEX) 12.6%, Aci Worldwide (ACIW) 12.4%). On return on invested capital, Aci Worldwide (ACIW) leads (Wex (WEX) 7.8%, Aci Worldwide (ACIW) 10.8%).

Which stock has performed better?

Over the past year Wex (WEX) returned the most: Wex (WEX) +15.7%, Aci Worldwide (ACIW) +8.9%. Over five years, Aci Worldwide (ACIW) compounded fastest (Wex (WEX) +3.0%/yr, Aci Worldwide (ACIW) +12.0%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Aci Worldwide (ACIW) has been the steadiest (Wex (WEX) 41.7%, Aci Worldwide (ACIW) 34.9%). Volatility measures how widely the price swings, not the risk of the business.

Do WEX and ACIW move together?

Their daily returns over the past year have a correlation of 0.43, a moderate positive relationship. Holding both diversifies more than two closely linked stocks would.

Which is the better stock, WEX and ACIW?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Wex (WEX) leads on 7. Business Quant does not give investment advice; use the comparison as a starting point for your own research.

Data from SEC filings, exchange prices and consensus estimates, via Business Quant. Percentile scores compare each company with its own peer group, so two companies' scores are each relative to different peers unless you rank against the whole market. Price returns exclude dividends. Nothing on this page is investment advice.