ARM vs. PLTR

Last updated Jun 16, 2026

ARM (Arm Holdings plc American Depositary Shares) and PLTR (Palantir Technologies Inc.) are both stocks. Both are in the Technology sector — ARM in Semiconductors, PLTR in Software - Infrastructure. Over the past year, ARM returned 204.35% vs -1.96% for PLTR. At a 0.41 correlation, their price movements are largely independent.

Performance

ARM vs. PLTR - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Arm Holdings plc American Depositary Shares (ARM) and Palantir Technologies Inc. (PLTR). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ARM achieves a 277.41% return, which is significantly higher than PLTR's -24.21% return.

ARM

• 1D: 8.33%
• 1M: 97.24%
• YTD: 277.41%
• 6M: 231.71%
• 1Y: 204.35%
• 3Y*: —
• 5Y*: —
• 10Y*: —

PLTR

• 1D: 5.25%
• 1M: 0.54%
• YTD: -24.21%
• 6M: -26.49%
• 1Y: -1.96%
• 3Y*: 102.18%
• 5Y*: 40.28%
• 10Y*: —

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

ARM vs. PLTR - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
ARM Arm Holdings plc American Depositary Shares	277.41%	-11.39%	64.16%	33.95%
PLTR Palantir Technologies Inc.	-24.21%	135.03%	340.48%	10.06%

Correlation

The correlation between ARM and PLTR is 0.24, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.24
Correlation (All Time) Calculated using the full available price history since Sep 14, 2023	0.41

The correlation between ARM and PLTR shifts across timeframes, from 0.24 (1 year) to 0.41 (all time), reflecting how their relationship changes across market environments.

Fundamentals

Market Cap ARM : $440.60B PLTR : $346.33B
EPS ARM : $0.85 PLTR : $0.89
PE Ratio ARM : 487.28 PLTR : 151.59
PEG Ratio ARM : 16.72 PLTR : 0.88
PS Ratio ARM : 89.53 PLTR : 66.20
PB Ratio ARM : 53.17 PLTR : 40.99
Total Revenue (TTM) ARM : $4.92B PLTR : $5.22B
Gross Profit (TTM) ARM : $4.66B PLTR : $4.39B
EBITDA (TTM) ARM : $1.37B PLTR : $2.01B

Return for Risk

ARM vs. PLTR — Risk / Return Rank

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

ARM

ARM Risk / Return Rank: 92
ARM Sharpe Ratio Rank: 95
ARM Sortino Ratio Rank: 93
ARM Omega Ratio Rank: 91
ARM Calmar Ratio Rank: 92
ARM Martin Ratio Rank: 88

PLTR

PLTR Risk / Return Rank: 39
PLTR Sharpe Ratio Rank: 40
PLTR Sortino Ratio Rank: 38
PLTR Omega Ratio Rank: 38
PLTR Calmar Ratio Rank: 41
PLTR Martin Ratio Rank: 40

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.

ARM vs. PLTR - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Arm Holdings plc American Depositary Shares (ARM) and Palantir Technologies Inc. (PLTR). 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.

	ARM	PLTR	Difference
Sharpe ratio: Return per unit of total volatility	2.97	-0.04	+3.01
Sortino ratio: Return per unit of downside risk	3.43	0.30	+3.14
Omega ratio: Gain probability vs. loss probability	1.44	1.04	+0.40
Calmar ratio: Return relative to maximum drawdown	4.96	-0.05	+5.01
Martin ratio: Return relative to average drawdown	9.74	-0.09	+9.84

ARM vs. PLTR - Sharpe Ratio Comparison

The current ARM Sharpe Ratio is 2.97, which is higher than the PLTR Sharpe Ratio of -0.04. The chart below compares the historical Sharpe Ratios of ARM and PLTR, 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

ARM vs. PLTR - Drawdown Comparison

The maximum ARM drawdown since its inception was -53.97%, smaller than the maximum PLTR drawdown of -84.62%. Use the drawdown chart below to compare losses from any high point for ARM and PLTR.

Drawdown Indicators

	ARM	PLTR	Difference
Max Drawdown Largest peak-to-trough decline	-53.97%	-84.62%	+30.65%
Max Drawdown (1Y) Largest decline over 1 year	-41.47%	-38.22%	-3.25%
Max Drawdown (3Y) Largest decline over 3 years	—	-40.61%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-79.14%	—
Current Drawdown Current decline from peak	0.00%	-34.98%	+34.98%
Average Drawdown Average peak-to-trough decline	-21.30%	-40.27%	+18.97%
Ulcer Index Depth and duration of drawdowns from previous peaks	21.07%	21.35%	-0.28%

Volatility

ARM vs. PLTR - Volatility Comparison

Arm Holdings plc American Depositary Shares (ARM) has a higher volatility of 37.61% compared to Palantir Technologies Inc. (PLTR) at 17.72%. This indicates that ARM's price experiences larger fluctuations and is considered to be riskier than PLTR based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ARM	PLTR	Difference
Volatility (1M) Calculated over the trailing 1-month period	37.61%	17.72%	+19.89%
Volatility (6M) Calculated over the trailing 6-month period	58.29%	38.70%	+19.59%
Volatility (1Y) Calculated over the trailing 1-year period	69.43%	51.17%	+18.26%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	76.67%	65.49%	+11.18%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	76.67%	69.76%	+6.91%

Dividends

ARM vs. PLTR - Dividend Comparison

Neither ARM nor PLTR has paid dividends to shareholders.

Tickers have no history of dividend payments

Financials

ARM vs. PLTR - Profitability Comparison

The chart below illustrates the profitability comparison between Arm Holdings plc American Depositary Shares and Palantir Technologies Inc. over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

ARM - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Arm Holdings plc American Depositary Shares reported a gross profit of 1.39B and revenue of 1.49B. Therefore, the gross margin over that period was 93.1%.

PLTR - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Palantir Technologies Inc. reported a gross profit of 1.42B and revenue of 1.63B. Therefore, the gross margin over that period was 86.8%.

ARM - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Arm Holdings plc American Depositary Shares reported an operating income of 440.00M and revenue of 1.49B, resulting in an operating margin of 29.5%.

PLTR - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Palantir Technologies Inc. reported an operating income of 754.00M and revenue of 1.63B, resulting in an operating margin of 46.2%.

ARM - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Arm Holdings plc American Depositary Shares reported a net income of 313.00M and revenue of 1.49B, resulting in a net margin of 21.0%.

PLTR - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Palantir Technologies Inc. reported a net income of 870.53M and revenue of 1.63B, resulting in a net margin of 53.3%.

Frequently Asked Questions

Can I hold both ARM and PLTR in my portfolio?

ARM and PLTR have a correlation of 0.24, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ARM or PLTR?

ARM has higher volatility (37.61%) compared to PLTR (17.72%). In terms of maximum drawdown, ARM dropped -53.97% vs PLTR's -84.62%.

Which has better risk-adjusted returns?

ARM currently has the higher Sharpe Ratio (2.97 vs -0.04), 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.