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STEM vs. VWOB
Performance
Return for Risk
Drawdowns
Volatility
Dividends

STEM vs. VWOB

Last updated Jun 4, 2026

STEM (Stem, Inc.) is a stock, while VWOB (Vanguard Emerging Markets Government Bond ETF) is Emerging Markets Bonds fund tracking the Barclays USD Emerging Markets Government RIC Capped Index. Over the past 5 years, STEM returned -57.40%/yr vs 2.08%/yr for VWOB. At a 0.26 correlation, their price movements are largely independent.

Performance

STEM vs. VWOB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Stem, Inc. (STEM) and Vanguard Emerging Markets Government Bond ETF (VWOB). The values are adjusted to include any dividend payments, if applicable.

Loading charts...

Returns By Period

In the year-to-date period, STEM achieves a -39.93% return, which is significantly lower than VWOB's 1.54% return.

STEM

1D
-9.78%
1M
-10.76%
YTD
-39.93%
6M
-47.56%
1Y
-10.39%
3Y*
-56.34%
5Y*
-57.40%
10Y*
—

VWOB

1D
-0.31%
1M
1.13%
YTD
1.54%
6M
1.55%
1Y
10.87%
3Y*
9.39%
5Y*
2.08%
10Y*
3.53%
*Multi-year figures are annualized to reflect compound growth (CAGR)

STEM vs. VWOB - Yearly Performance Comparison

2026 (YTD)202520242023202220212020
STEM
Stem, Inc.		-39.93%24.79%-84.46%-56.60%-52.87%-7.28%110.93%
VWOB
Vanguard Emerging Markets Government Bond ETF		1.54%13.49%5.20%10.68%-17.39%-1.80%4.36%

Correlation

The correlation between STEM and VWOB is 0.27, which is low. Their price movements are largely independent, making them effective diversification partners.

Correlation
Correlation (1Y)
Calculated over the trailing 1-year period

0.27

Correlation (3Y)
Calculated over the trailing 3-year period

0.26

Correlation (5Y)
Calculated over the trailing 5-year period

0.27

Correlation (All Time)
Calculated using the full available price history since Oct 9, 2020

0.26

Compare stocks, funds, or ETFs

Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.

Stem, Inc.

Vanguard Emerging Markets Government Bond ETF

Often compared with STEM:
STEM vs. LTBRSTEM vs. ETNSTEM vs. NEESTEM vs. QDVE.DESTEM vs. XELSTEM vs. FLNCSTEM vs. DUK
Often compared with VWOB:
VWOB vs. EMBVWOB vs. BNDXVWOB vs. EMLCVWOB vs. VWOVWOB vs. VEMBXVWOB vs. EMHYVWOB vs. PCY

Return for Risk

STEM vs. VWOB — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.
STEM
STEM Risk / Return Rank: 4141
Overall Rank
STEM Sharpe Ratio Rank: 3737
Sharpe Ratio Rank
STEM Sortino Ratio Rank: 4949
Sortino Ratio Rank
STEM Omega Ratio Rank: 4747
Omega Ratio Rank
STEM Calmar Ratio Rank: 3636
Calmar Ratio Rank
STEM Martin Ratio Rank: 3636
Martin Ratio Rank
VWOB
VWOB Risk / Return Rank: 6060
Overall Rank
VWOB Sharpe Ratio Rank: 6262
Sharpe Ratio Rank
VWOB Sortino Ratio Rank: 6565
Sortino Ratio Rank
VWOB Omega Ratio Rank: 6767
Omega Ratio Rank
VWOB Calmar Ratio Rank: 4949
Calmar Ratio Rank
VWOB Martin Ratio Rank: 5858
Martin Ratio Rank
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.

STEM vs. VWOB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Stem, Inc. (STEM) and Vanguard Emerging Markets Government Bond ETF (VWOB). 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.

STEMVWOBDifference
Sharpe ratioReturn per unit of total volatility
-0.09
2.12

-2.21

Sortino ratioReturn per unit of downside risk
0.79
3.09

-2.29

Omega ratioGain probability vs. loss probability

1.09

1.41

-0.32

Calmar ratioReturn relative to maximum drawdown

-0.14

2.44

-2.58

Martin ratioReturn relative to average drawdown

-0.23

10.30

-10.53

Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

STEM vs. VWOB - Sharpe Ratio Comparison

The current STEM Sharpe Ratio is -0.09, which is lower than the VWOB Sharpe Ratio of 2.12. The chart below compares the historical Sharpe Ratios of STEM and VWOB, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

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Sharpe Ratios by Period

STEMVWOBDifference

Sharpe Ratio (1Y)

Calculated over the trailing 1-year period

-0.09

2.12

-2.21

Sharpe Ratio (5Y)

Calculated over the trailing 5-year period

-0.50

0.23

-0.73

Sharpe Ratio (10Y)

Calculated over the trailing 10-year period

—

0.38

—

Sharpe Ratio (All Time)

Calculated using the full available price history

-0.36

0.42

-0.77

Drawdowns

STEM vs. VWOB - Drawdown Comparison

The maximum STEM drawdown since its inception was -99.41%, which is greater than VWOB's maximum drawdown of -26.98%. Use the drawdown chart below to compare losses from any high point for STEM and VWOB.

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Drawdown Indicators

STEMVWOBDifference

Max Drawdown

Largest peak-to-trough decline

-99.41%

-26.98%

-72.43%

Max Drawdown (1Y)

Largest decline over 1 year

-72.31%

-4.48%

-67.83%

Max Drawdown (3Y)

Largest decline over 3 years

-95.98%

-7.71%

-88.27%

Max Drawdown (5Y)

Largest decline over 5 years

-99.20%

-26.98%

-72.22%

Max Drawdown (10Y)

Largest decline over 10 years

—

-26.98%

—

Current Drawdown

Current decline from peak

-99.10%

-0.36%

-98.74%

Average Drawdown

Average peak-to-trough decline

-79.12%

-4.78%

-74.34%

Ulcer Index

Depth and duration of drawdowns from previous peaks

45.79%

1.06%

+44.73%

Volatility

STEM vs. VWOB - Volatility Comparison

Stem, Inc. (STEM) has a higher volatility of 30.04% compared to Vanguard Emerging Markets Government Bond ETF (VWOB) at 1.72%. This indicates that STEM's price experiences larger fluctuations and is considered to be riskier than VWOB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

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Volatility by Period

STEMVWOBDifference

Volatility (1M)

Calculated over the trailing 1-month period

30.04%

1.72%

+28.32%

Volatility (6M)

Calculated over the trailing 6-month period

63.04%

4.17%

+58.87%

Volatility (1Y)

Calculated over the trailing 1-year period

121.65%

5.15%

+116.50%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

114.11%

9.18%

+104.93%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

117.40%

9.34%

+108.06%

Dividends

STEM vs. VWOB - Dividend Comparison

STEM has not paid dividends to shareholders, while VWOB's dividend yield for the trailing twelve months is around 5.85%.

PositionTTM20252024202320222021202020192018201720162015
STEM
Stem, Inc.		0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%
VWOB
Vanguard Emerging Markets Government Bond ETF		5.85%5.92%6.08%5.50%5.30%4.04%4.18%4.58%4.52%4.61%4.71%4.93%

Frequently Asked Questions

STEM and VWOB have a correlation of 0.27, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

STEM has higher volatility (30.04%) compared to VWOB (1.72%). In terms of maximum drawdown, STEM dropped -99.41% vs VWOB's -26.98%.

VWOB currently has the higher Sharpe Ratio (2.12 vs -0.09), 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.

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