VBK vs. DLR

Last updated Jun 16, 2026

VBK (Vanguard Small-Cap Growth ETF) is Small Cap Growth Equities fund tracking the CRSP US Small Cap Growth Index, while DLR (Digital Realty Trust, Inc.) is a stock. Over the past 10 years, VBK returned 12.03%/yr vs 9.82%/yr for DLR. At a 0.48 correlation, their price movements are largely independent.

Performance

VBK vs. DLR - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Small-Cap Growth ETF (VBK) and Digital Realty Trust, Inc. (DLR). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VBK achieves a 18.24% return, which is significantly lower than DLR's 21.13% return. Over the past 10 years, VBK has outperformed DLR with an annualized return of 12.03%, while DLR has yielded a comparatively lower 9.82% annualized return.

VBK

• 1D: 1.71%
• 1M: 5.71%
• YTD: 18.24%
• 6M: 17.85%
• 1Y: 34.10%
• 3Y*: 16.97%
• 5Y*: 5.40%
• 10Y*: 12.03%

DLR

• 1D: 1.05%
• 1M: -1.26%
• YTD: 21.13%
• 6M: 22.57%
• 1Y: 9.04%
• 3Y*: 24.50%
• 5Y*: 6.84%
• 10Y*: 9.82%

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

VBK vs. DLR - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VBK Vanguard Small-Cap Growth ETF	18.24%	8.50%	16.50%	21.45%	-28.44%	5.66%	35.44%	32.75%	-5.70%	21.87%
DLR Digital Realty Trust, Inc.	21.13%	-10.07%	35.90%	39.95%	-41.00%	30.66%	20.37%	16.52%	-3.00%	19.80%

Correlation

The correlation between VBK and DLR is 0.44, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.44
Correlation (3Y) Calculated over the trailing 3-year period	0.50
Correlation (5Y) Calculated over the trailing 5-year period	0.51
Correlation (10Y) Calculated over the trailing 10-year period	0.42
Correlation (All Time) Calculated using the full available price history since Oct 29, 2004	0.48

The correlation between VBK and DLR has been stable across timeframes, ranging from 0.42 to 0.51 - a consistent structural relationship.

Return for Risk

VBK vs. DLR — Risk / Return Rank

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

VBK

VBK Risk / Return Rank: 59
VBK Sharpe Ratio Rank: 56
VBK Sortino Ratio Rank: 53
VBK Omega Ratio Rank: 51
VBK Calmar Ratio Rank: 66
VBK Martin Ratio Rank: 68

DLR

DLR Risk / Return Rank: 53
DLR Sharpe Ratio Rank: 56
DLR Sortino Ratio Rank: 50
DLR Omega Ratio Rank: 47
DLR Calmar Ratio Rank: 55
DLR Martin Ratio Rank: 57

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.

VBK vs. DLR - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Small-Cap Growth ETF (VBK) and Digital Realty Trust, Inc. (DLR). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	VBK	DLR	Difference
Sharpe ratio: Return per unit of total volatility	1.72	0.40	+1.32
Sortino ratio: Return per unit of downside risk	2.35	0.73	+1.62
Omega ratio: Gain probability vs. loss probability	1.29	1.08	+0.21
Calmar ratio: Return relative to maximum drawdown	2.99	0.54	+2.45
Martin ratio: Return relative to average drawdown	11.23	1.32	+9.91

VBK vs. DLR - Sharpe Ratio Comparison

The current VBK Sharpe Ratio is 1.72, which is higher than the DLR Sharpe Ratio of 0.40. The chart below compares the historical Sharpe Ratios of VBK and DLR, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

VBK vs. DLR - Drawdown Comparison

The maximum VBK drawdown since its inception was -58.68%, roughly equal to the maximum DLR drawdown of -56.80%. Use the drawdown chart below to compare losses from any high point for VBK and DLR.

Drawdown Indicators

	VBK	DLR	Difference
Max Drawdown Largest peak-to-trough decline	-58.68%	-56.80%	-1.88%
Max Drawdown (1Y) Largest decline over 1 year	-11.44%	-16.83%	+5.39%
Max Drawdown (3Y) Largest decline over 3 years	-27.54%	-29.40%	+1.86%
Max Drawdown (5Y) Largest decline over 5 years	-38.39%	-48.52%	+10.13%
Max Drawdown (10Y) Largest decline over 10 years	-38.70%	-48.52%	+9.82%
Current Drawdown Current decline from peak	-0.36%	-8.72%	+8.36%
Average Drawdown Average peak-to-trough decline	-10.14%	-11.13%	+0.99%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.04%	6.84%	-3.80%

Volatility

VBK vs. DLR - Volatility Comparison

Vanguard Small-Cap Growth ETF (VBK) and Digital Realty Trust, Inc. (DLR) have volatilities of 7.47% and 7.72%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VBK	DLR	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.47%	7.72%	-0.25%
Volatility (6M) Calculated over the trailing 6-month period	15.66%	16.32%	-0.66%
Volatility (1Y) Calculated over the trailing 1-year period	19.99%	22.82%	-2.83%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.60%	28.58%	-4.98%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.93%	28.20%	-5.27%

Dividends

VBK vs. DLR - Dividend Comparison

VBK's dividend yield for the trailing twelve months is around 0.44%, less than DLR's 2.64% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DLR Digital Realty Trust, Inc.	2.64%	3.15%	2.75%	3.63%	4.87%	2.62%	3.21%	3.61%	3.79%	3.27%	3.58%	4.50%
VBK Vanguard Small-Cap Growth ETF	0.44%	0.54%	0.54%	0.68%	0.55%	0.36%	0.44%	0.57%	0.79%	0.82%	1.08%	0.98%

Frequently Asked Questions

Can I hold both VBK and DLR in my portfolio?

VBK and DLR have a correlation of 0.44, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VBK or DLR?

DLR has higher volatility (7.72%) compared to VBK (7.47%). In terms of maximum drawdown, VBK dropped -58.68% vs DLR's -56.80%.

Which has better risk-adjusted returns?

VBK currently has the higher Sharpe Ratio (1.72 vs 0.40), 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.