AOSL vs. ARM

Last updated Apr 1, 2026

Compare and contrast key facts about Alpha and Omega Semiconductor Limited (AOSL) and Arm Holdings plc American Depositary Shares (ARM).

Performance

AOSL vs. ARM - Performance Comparison

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

AOSL vs. ARM - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
AOSL Alpha and Omega Semiconductor Limited	11.86%	-46.50%	42.10%	-13.22%
ARM Arm Holdings plc American Depositary Shares	38.40%	-11.39%	64.16%	18.17%

Fundamentals

Market Cap AOSL : $660.72M ARM : $161.72B
EPS AOSL : -$3.45 ARM : $0.75
PS Ratio AOSL : 0.97 ARM : 34.58
PB Ratio AOSL : 0.81 ARM : 20.74
Total Revenue (TTM) AOSL : $685.88M ARM : $4.67B
Gross Profit (TTM) AOSL : $154.14M ARM : $4.46B
EBITDA (TTM) AOSL : $13.24M ARM : $1.05B

Returns By Period

In the year-to-date period, AOSL achieves a 11.86% return, which is significantly lower than ARM's 38.40% return.

AOSL

• 1D: 6.39%
• 1M: 5.47%
• YTD: 11.86%
• 6M: -20.74%
• 1Y: -10.86%
• 3Y*: -6.31%
• 5Y*: -8.47%
• 10Y*: 6.42%

ARM

• 1D: 10.46%
• 1M: 18.70%
• YTD: 38.40%
• 6M: 6.92%
• 1Y: 41.66%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

Return for Risk

AOSL vs. ARM — Risk / Return Rank

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

AOSL

AOSL Risk / Return Rank: 35
AOSL Sharpe Ratio Rank: 35
AOSL Sortino Ratio Rank: 37
AOSL Omega Ratio Rank: 38
AOSL Calmar Ratio Rank: 32
AOSL Martin Ratio Rank: 31

ARM

ARM Risk / Return Rank: 65
ARM Sharpe Ratio Rank: 67
ARM Sortino Ratio Rank: 68
ARM Omega Ratio Rank: 65
ARM Calmar Ratio Rank: 64
ARM Martin Ratio Rank: 62

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.

AOSL vs. ARM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Alpha and Omega Semiconductor Limited (AOSL) and Arm Holdings plc American Depositary Shares (ARM). 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.

	AOSL	ARM	Difference
Sharpe ratio Return per unit of total volatility	-0.15	0.71	-0.86
Sortino ratio Return per unit of downside risk	0.30	1.45	-1.15
Omega ratio Gain probability vs. loss probability	1.04	1.18	-0.14
Calmar ratio Return relative to maximum drawdown	-0.33	0.97	-1.30
Martin ratio Return relative to average drawdown	-0.63	1.95	-2.58
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

AOSL vs. ARM - Sharpe Ratio Comparison

The current AOSL Sharpe Ratio is -0.15, which is lower than the ARM Sharpe Ratio of 0.71. The chart below compares the historical Sharpe Ratios of AOSL and ARM, 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

	AOSL	ARM	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.15	0.71	-0.86
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.13	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.10	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.03	0.56	-0.54

Correlation

The correlation between AOSL and ARM is 0.46, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

AOSL vs. ARM - Dividend Comparison

Neither AOSL nor ARM has paid dividends to shareholders.

Tickers have no history of dividend payments

Drawdowns

AOSL vs. ARM - Drawdown Comparison

The maximum AOSL drawdown since its inception was -75.27%, which is greater than ARM's maximum drawdown of -53.97%. Use the drawdown chart below to compare losses from any high point for AOSL and ARM.

Drawdown Indicators

	AOSL	ARM	Difference
Max Drawdown Largest peak-to-trough decline	-75.27%	-53.97%	-21.30%
Max Drawdown (1Y) Largest decline over 1 year	-45.32%	-41.47%	-3.85%
Max Drawdown (5Y) Largest decline over 5 years	-75.27%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-75.27%	—	—
Current Drawdown Current decline from peak	-66.28%	-18.87%	-47.41%
Average Drawdown Average peak-to-trough decline	-43.26%	-22.29%	-20.97%
Ulcer Index Depth and duration of drawdowns from previous peaks	23.71%	20.67%	+3.04%

Volatility

AOSL vs. ARM - Volatility Comparison

The current volatility for Alpha and Omega Semiconductor Limited (AOSL) is 15.90%, while Arm Holdings plc American Depositary Shares (ARM) has a volatility of 23.62%. This indicates that AOSL experiences smaller price fluctuations and is considered to be less risky than ARM based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AOSL	ARM	Difference
Volatility (1M) Calculated over the trailing 1-month period	15.90%	23.62%	-7.72%
Volatility (6M) Calculated over the trailing 6-month period	49.99%	39.06%	+10.93%
Volatility (1Y) Calculated over the trailing 1-year period	73.13%	58.98%	+14.15%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	66.58%	72.68%	-6.10%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	61.47%	72.68%	-11.21%

Financials

AOSL vs. ARM - Profitability Comparison

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

AOSL - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Alpha and Omega Semiconductor Limited reported a gross profit of 34.82M and revenue of 162.26M. Therefore, the gross margin over that period was 21.5%.

ARM - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Arm Holdings plc American Depositary Shares reported a gross profit of 1.17B and revenue of 1.24B. Therefore, the gross margin over that period was 94.2%.

AOSL - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Alpha and Omega Semiconductor Limited reported an operating income of -13.57M and revenue of 162.26M, resulting in an operating margin of -8.4%.

ARM - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Arm Holdings plc American Depositary Shares reported an operating income of 191.00M and revenue of 1.24B, resulting in an operating margin of 15.4%.

AOSL - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Alpha and Omega Semiconductor Limited reported a net income of -13.29M and revenue of 162.26M, resulting in a net margin of -8.2%.

ARM - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Arm Holdings plc American Depositary Shares reported a net income of 223.00M and revenue of 1.24B, resulting in a net margin of 18.0%.