STEM vs. PSTG

Last updated Apr 1, 2026

Compare and contrast key facts about Stem, Inc. (STEM) and Pure Storage, Inc. (PSTG).

Performance

STEM vs. PSTG - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Stem, Inc. (STEM) and Pure Storage, Inc. (PSTG). The values are adjusted to include any dividend payments, if applicable.

STEM vs. PSTG - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
STEM Stem, Inc.	-41.26%	24.79%	-84.46%	-56.60%	-52.87%	-7.28%	110.93%
PSTG Pure Storage, Inc.	-11.89%	9.08%	72.27%	33.26%	-17.79%	43.96%	27.31%

Fundamentals

Market Cap STEM : $75.05M PSTG : $20.43B
EPS STEM : $16.30 PSTG : $0.56
PE Ratio STEM : 0.54 PSTG : 105.96
PS Ratio STEM : 0.48 PSTG : 5.44
Total Revenue (TTM) STEM : $156.27M PSTG : $3.66B
Gross Profit (TTM) STEM : $59.96M PSTG : $2.58B
EBITDA (TTM) STEM : $171.02M PSTG : $313.25M

Returns By Period

In the year-to-date period, STEM achieves a -41.26% return, which is significantly lower than PSTG's -11.89% return.

STEM

• 1D: 7.15%
• 1M: -15.89%
• YTD: -41.26%
• 6M: -49.54%
• 1Y: 26.18%
• 3Y*: -57.28%
• 5Y*: -56.05%
• 10Y*: —

PSTG

• 1D: 3.60%
• 1M: -8.07%
• YTD: -11.89%
• 6M: -29.55%
• 1Y: 33.36%
• 3Y*: 32.28%
• 5Y*: 21.86%
• 10Y*: 15.11%

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

Return for Risk

STEM vs. PSTG — Risk / Return Rank

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

STEM

STEM Risk / Return Rank: 53
STEM Sharpe Ratio Rank: 49
STEM Sortino Ratio Rank: 64
STEM Omega Ratio Rank: 59
STEM Calmar Ratio Rank: 46
STEM Martin Ratio Rank: 47

PSTG

PSTG Risk / Return Rank: 60
PSTG Sharpe Ratio Rank: 60
PSTG Sortino Ratio Rank: 60
PSTG Omega Ratio Rank: 63
PSTG Calmar Ratio Rank: 58
PSTG Martin Ratio Rank: 58

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. PSTG - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Stem, Inc. (STEM) and Pure Storage, Inc. (PSTG). 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.

	STEM	PSTG	Difference
Sharpe ratio Return per unit of total volatility	0.21	0.50	-0.30
Sortino ratio Return per unit of downside risk	1.34	1.15	+0.19
Omega ratio Gain probability vs. loss probability	1.15	1.17	-0.02
Calmar ratio Return relative to maximum drawdown	0.18	0.67	-0.49
Martin ratio Return relative to average drawdown	0.36	1.53	-1.17
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. PSTG - Sharpe Ratio Comparison

The current STEM Sharpe Ratio is 0.21, which is lower than the PSTG Sharpe Ratio of 0.50. The chart below compares the historical Sharpe Ratios of STEM and PSTG, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	STEM	PSTG	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.21	0.50	-0.30
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.49	0.43	-0.92
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.30	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.37	0.26	-0.63

Correlation

The correlation between STEM and PSTG is 0.34, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Dividends

STEM vs. PSTG - Dividend Comparison

Neither STEM nor PSTG has paid dividends to shareholders.

Tickers have no history of dividend payments

Drawdowns

STEM vs. PSTG - Drawdown Comparison

The maximum STEM drawdown since its inception was -99.41%, which is greater than PSTG's maximum drawdown of -69.43%. Use the drawdown chart below to compare losses from any high point for STEM and PSTG.

Drawdown Indicators

	STEM	PSTG	Difference
Max Drawdown Largest peak-to-trough decline	-99.41%	-69.43%	-29.98%
Max Drawdown (1Y) Largest decline over 1 year	-72.31%	-42.26%	-30.05%
Max Drawdown (5Y) Largest decline over 5 years	-99.20%	-48.63%	-50.57%
Max Drawdown (10Y) Largest decline over 10 years	—	-69.43%	—
Current Drawdown Current decline from peak	-99.12%	-40.18%	-58.94%
Average Drawdown Average peak-to-trough decline	-78.48%	-24.42%	-54.06%
Ulcer Index Depth and duration of drawdowns from previous peaks	36.58%	18.47%	+18.11%

Volatility

STEM vs. PSTG - Volatility Comparison

Stem, Inc. (STEM) has a higher volatility of 30.31% compared to Pure Storage, Inc. (PSTG) at 13.55%. This indicates that STEM's price experiences larger fluctuations and is considered to be riskier than PSTG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	STEM	PSTG	Difference
Volatility (1M) Calculated over the trailing 1-month period	30.31%	13.55%	+16.76%
Volatility (6M) Calculated over the trailing 6-month period	78.86%	50.06%	+28.80%
Volatility (1Y) Calculated over the trailing 1-year period	127.80%	66.85%	+60.95%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	114.40%	51.26%	+63.14%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	118.33%	50.67%	+67.66%

Financials

STEM vs. PSTG - Profitability Comparison

The chart below illustrates the profitability comparison between Stem, Inc. and Pure Storage, Inc. over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

STEM - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Stem, Inc. reported a gross profit of 23.04M and revenue of 47.14M. Therefore, the gross margin over that period was 48.9%.

PSTG - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Pure Storage, Inc. reported a gross profit of 740.09M and revenue of 1.06B. Therefore, the gross margin over that period was 69.9%.

STEM - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Stem, Inc. reported an operating income of -8.35M and revenue of 47.14M, resulting in an operating margin of -17.7%.

PSTG - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Pure Storage, Inc. reported an operating income of 102.37M and revenue of 1.06B, resulting in an operating margin of 9.7%.

STEM - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Stem, Inc. reported a net income of -15.98M and revenue of 47.14M, resulting in a net margin of -33.9%.

PSTG - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Pure Storage, Inc. reported a net income of 100.25M and revenue of 1.06B, resulting in a net margin of 9.5%.