ADP vs. VWELX

Last updated Jun 9, 2026

ADP (Automatic Data Processing, Inc.) is a stock, while VWELX (Vanguard Wellington Fund Investor Shares) is Diversified Portfolio fund actively managed by Vanguard. Over the past 10 years, ADP returned 12.50%/yr vs 9.87%/yr for VWELX. A 0.54 correlation means they provide meaningful diversification when combined.

Performance

ADP vs. VWELX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Automatic Data Processing, Inc. (ADP) and Vanguard Wellington Fund Investor Shares (VWELX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ADP achieves a -10.21% return, which is significantly lower than VWELX's 4.55% return. Over the past 10 years, ADP has outperformed VWELX with an annualized return of 12.50%, while VWELX has yielded a comparatively lower 9.87% annualized return.

ADP

• 1D: -1.24%
• 1M: 7.55%
• YTD: -10.21%
• 6M: -10.14%
• 1Y: -28.14%
• 3Y*: 4.26%
• 5Y*: 5.16%
• 10Y*: 12.50%

VWELX

• 1D: -2.02%
• 1M: -0.51%
• YTD: 4.55%
• 6M: 4.96%
• 1Y: 17.46%
• 3Y*: 14.67%
• 5Y*: 8.31%
• 10Y*: 9.87%

*Multi-year figures are annualized to reflect compound growth (CAGR)

ADP vs. VWELX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ADP Automatic Data Processing, Inc.	-10.21%	-10.18%	28.41%	-0.25%	-1.29%	42.60%	5.86%	32.71%	14.25%	16.54%
VWELX Vanguard Wellington Fund Investor Shares	4.55%	16.54%	14.73%	14.29%	-14.36%	18.99%	10.57%	22.51%	-3.43%	13.98%

Correlation

The correlation between ADP and VWELX is 0.10, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.10
Correlation (3Y) Calculated over the trailing 3-year period	0.29
Correlation (5Y) Calculated over the trailing 5-year period	0.51
Correlation (10Y) Calculated over the trailing 10-year period	0.57
Correlation (All Time) Calculated using the full available price history since Apr 7, 1983	0.54

Over the past year, the correlation between ADP and VWELX has dropped to 0.10 - well below their long-term average of 0.54, suggesting their price drivers have been diverging.

Return for Risk

ADP vs. VWELX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

ADP

ADP Risk / Return Rank: 8
ADP Sharpe Ratio Rank: 2
ADP Sortino Ratio Rank: 4
ADP Omega Ratio Rank: 6
ADP Calmar Ratio Rank: 15
ADP Martin Ratio Rank: 11

VWELX

VWELX Risk / Return Rank: 55
VWELX Sharpe Ratio Rank: 54
VWELX Sortino Ratio Rank: 50
VWELX Omega Ratio Rank: 54
VWELX Calmar Ratio Rank: 52
VWELX Martin Ratio Rank: 65

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

ADP vs. VWELX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Automatic Data Processing, Inc. (ADP) and Vanguard Wellington Fund Investor Shares (VWELX). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	ADP	VWELX	Difference
Sharpe ratio: Return per unit of total volatility	-1.16	2.09	-3.25
Sortino ratio: Return per unit of downside risk	-1.68	2.89	-4.56
Omega ratio: Gain probability vs. loss probability	0.80	1.39	-0.59
Calmar ratio: Return relative to maximum drawdown	-0.72	2.67	-3.39
Martin ratio: Return relative to average drawdown	-1.33	12.31	-13.63
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ADP vs. VWELX - Sharpe Ratio Comparison

The current ADP Sharpe Ratio is -1.16, which is lower than the VWELX Sharpe Ratio of 2.09. The chart below compares the historical Sharpe Ratios of ADP and VWELX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	ADP	VWELX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-1.16	2.09	-3.25
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.24	0.75	-0.51
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.51	0.86	-0.35
Sharpe Ratio (All Time) Calculated using the full available price history	0.54	0.84	-0.30

Drawdowns

ADP vs. VWELX - Drawdown Comparison

The maximum ADP drawdown since its inception was -59.51%, which is greater than VWELX's maximum drawdown of -36.12%. Use the drawdown chart below to compare losses from any high point for ADP and VWELX.

Drawdown Indicators

	ADP	VWELX	Difference
Max Drawdown Largest peak-to-trough decline	-59.51%	-36.12%	-23.39%
Max Drawdown (1Y) Largest decline over 1 year	-39.25%	-6.78%	-32.47%
Max Drawdown (3Y) Largest decline over 3 years	-40.78%	-11.98%	-28.80%
Max Drawdown (5Y) Largest decline over 5 years	-40.78%	-20.88%	-19.90%
Max Drawdown (10Y) Largest decline over 10 years	-40.78%	-25.33%	-15.45%
Current Drawdown Current decline from peak	-28.14%	-2.39%	-25.75%
Average Drawdown Average peak-to-trough decline	-12.59%	-3.92%	-8.67%
Ulcer Index Depth and duration of drawdowns from previous peaks	22.88%	1.47%	+21.41%

Volatility

ADP vs. VWELX - Volatility Comparison

Automatic Data Processing, Inc. (ADP) has a higher volatility of 9.30% compared to Vanguard Wellington Fund Investor Shares (VWELX) at 3.12%. This indicates that ADP's price experiences larger fluctuations and is considered to be riskier than VWELX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ADP	VWELX	Difference
Volatility (1M) Calculated over the trailing 1-month period	9.30%	3.12%	+6.18%
Volatility (6M) Calculated over the trailing 6-month period	20.42%	7.00%	+13.42%
Volatility (1Y) Calculated over the trailing 1-year period	24.35%	8.67%	+15.68%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.05%	11.17%	+10.88%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.48%	11.55%	+12.93%

Dividends

ADP vs. VWELX - Dividend Comparison

ADP's dividend yield for the trailing twelve months is around 2.83%, less than VWELX's 11.02% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ADP Automatic Data Processing, Inc.	2.83%	2.46%	1.96%	2.21%	1.83%	1.55%	2.08%	1.92%	2.14%	2.00%	2.10%	2.36%
VWELX Vanguard Wellington Fund Investor Shares	11.02%	11.46%	10.76%	6.01%	8.19%	8.64%	7.77%	4.67%	9.49%	5.82%	4.44%	7.03%

Frequently Asked Questions

Can I hold both ADP and VWELX in my portfolio?

ADP and VWELX have a correlation of 0.10, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ADP or VWELX?

ADP has higher volatility (9.30%) compared to VWELX (3.12%). In terms of maximum drawdown, ADP dropped -59.51% vs VWELX's -36.12%.

Which has better risk-adjusted returns?

VWELX currently has the higher Sharpe Ratio (2.09 vs -1.16), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.