ARRNF vs. ATAI

Last updated Apr 1, 2026

Compare and contrast key facts about American Rare Earths Limited (ARRNF) and Atai Life Sciences N.V. (ATAI).

Performance

ARRNF vs. ATAI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Rare Earths Limited (ARRNF) and Atai Life Sciences N.V. (ATAI). The values are adjusted to include any dividend payments, if applicable.

ARRNF vs. ATAI - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
ARRNF American Rare Earths Limited	7.62%	23.89%	41.25%	-11.60%	4.42%	550.00%
ATAI Atai Life Sciences N.V.	-13.45%	207.52%	-5.67%	-46.99%	-65.14%	-60.77%

Fundamentals

Market Cap ARRNF : $125.95M ATAI : $1.11B
EPS ARRNF : -$0.02 ATAI : -$2.72
PB Ratio ARRNF : 2.61 ATAI : 5.01
Total Revenue (TTM) ARRNF : -$128.85K ATAI : $4.09M
Gross Profit (TTM) ARRNF : -$385.87K ATAI : $3.08M
EBITDA (TTM) ARRNF : -$12.72M ATAI : -$113.05M

Returns By Period

In the year-to-date period, ARRNF achieves a 7.62% return, which is significantly higher than ATAI's -13.45% return.

ARRNF

• 1D: 5.12%
• 1M: -11.37%
• YTD: 7.62%
• 6M: -17.22%
• 1Y: 25.56%
• 3Y*: 13.89%
• 5Y*: 62.41%
• 10Y*: —

ATAI

• 1D: 4.12%
• 1M: -2.48%
• YTD: -13.45%
• 6M: -33.08%
• 1Y: 160.29%
• 3Y*: 25.06%
• 5Y*: —
• 10Y*: —

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

Return for Risk

ARRNF vs. ATAI — Risk / Return Rank

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

ARRNF

ARRNF Risk / Return Rank: 56
ARRNF Sharpe Ratio Rank: 49
ARRNF Sortino Ratio Rank: 68
ARRNF Omega Ratio Rank: 64
ARRNF Calmar Ratio Rank: 50
ARRNF Martin Ratio Rank: 48

ATAI

ATAI Risk / Return Rank: 85
ATAI Sharpe Ratio Rank: 90
ATAI Sortino Ratio Rank: 88
ATAI Omega Ratio Rank: 84
ATAI Calmar Ratio Rank: 86
ATAI Martin Ratio Rank: 79

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.

ARRNF vs. ATAI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Rare Earths Limited (ARRNF) and Atai Life Sciences N.V. (ATAI). 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.

	ARRNF	ATAI	Difference
Sharpe ratio Return per unit of total volatility	0.20	1.89	-1.69
Sortino ratio Return per unit of downside risk	1.51	2.65	-1.14
Omega ratio Gain probability vs. loss probability	1.18	1.32	-0.14
Calmar ratio Return relative to maximum drawdown	0.32	2.93	-2.61
Martin ratio Return relative to average drawdown	0.52	5.49	-4.97
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ARRNF vs. ATAI - Sharpe Ratio Comparison

The current ARRNF Sharpe Ratio is 0.20, which is lower than the ATAI Sharpe Ratio of 1.89. The chart below compares the historical Sharpe Ratios of ARRNF and ATAI, 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

	ARRNF	ATAI	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.20	1.89	-1.69
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.20	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.16	-0.36	+0.52

Correlation

The correlation between ARRNF and ATAI is 0.09, 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

ARRNF vs. ATAI - Dividend Comparison

Neither ARRNF nor ATAI has paid dividends to shareholders.

Tickers have no history of dividend payments

Drawdowns

ARRNF vs. ATAI - Drawdown Comparison

The maximum ARRNF drawdown since its inception was -83.01%, smaller than the maximum ATAI drawdown of -94.77%. Use the drawdown chart below to compare losses from any high point for ARRNF and ATAI.

Drawdown Indicators

	ARRNF	ATAI	Difference
Max Drawdown Largest peak-to-trough decline	-83.01%	-94.77%	+11.76%
Max Drawdown (1Y) Largest decline over 1 year	-69.13%	-48.06%	-21.07%
Max Drawdown (5Y) Largest decline over 5 years	-83.01%	—	—
Current Drawdown Current decline from peak	-66.78%	-82.20%	+15.42%
Average Drawdown Average peak-to-trough decline	-45.82%	-79.80%	+33.98%
Ulcer Index Depth and duration of drawdowns from previous peaks	42.63%	25.66%	+16.97%

Volatility

ARRNF vs. ATAI - Volatility Comparison

The current volatility for American Rare Earths Limited (ARRNF) is 18.13%, while Atai Life Sciences N.V. (ATAI) has a volatility of 20.69%. This indicates that ARRNF experiences smaller price fluctuations and is considered to be less risky than ATAI based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ARRNF	ATAI	Difference
Volatility (1M) Calculated over the trailing 1-month period	18.13%	20.69%	-2.56%
Volatility (6M) Calculated over the trailing 6-month period	85.77%	53.14%	+32.63%
Volatility (1Y) Calculated over the trailing 1-year period	126.29%	85.60%	+40.69%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	314.40%	84.11%	+230.29%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	294.76%	84.11%	+210.65%

Financials