PSTG vs. STEM

Last updated Apr 1, 2026

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

Performance

PSTG vs. STEM - Performance Comparison

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

PSTG vs. STEM - Yearly Performance Comparison

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

Fundamentals

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

Returns By Period

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

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%

STEM

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

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

Return for Risk

PSTG vs. STEM — Risk / Return Rank

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

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

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

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.

PSTG vs. STEM - Risk-Adjusted Trends Comparison

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

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

PSTG vs. STEM - Sharpe Ratio Comparison

The current PSTG Sharpe Ratio is 0.50, which is higher than the STEM Sharpe Ratio of 0.21. The chart below compares the historical Sharpe Ratios of PSTG and STEM, 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

	PSTG	STEM	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.50	0.21	+0.30
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.43	-0.49	+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	0.26	-0.37	+0.63

Correlation

The correlation between PSTG and STEM 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

PSTG vs. STEM - Dividend Comparison

Neither PSTG nor STEM has paid dividends to shareholders.

Tickers have no history of dividend payments

Drawdowns

PSTG vs. STEM - Drawdown Comparison

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

Drawdown Indicators

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

Volatility

PSTG vs. STEM - Volatility Comparison

The current volatility for Pure Storage, Inc. (PSTG) is 13.55%, while Stem, Inc. (STEM) has a volatility of 30.31%. This indicates that PSTG experiences smaller price fluctuations and is considered to be less risky than STEM based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

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

Financials

PSTG vs. STEM - Profitability Comparison

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

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 - 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 - 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 - 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 - 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%.

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%.