ARRNF vs. ATAI

Last updated Jun 4, 2026

ARRNF (American Rare Earths Limited) and ATAI (Atai Life Sciences N.V.) are both stocks. ARRNF operates in Other Industrial Metals & Mining (Basic Materials), while ATAI operates in Biotechnology (Healthcare). Over the past 3 years, ARRNF returned 41.65%/yr vs 37.04%/yr for ATAI. At a 0.08 correlation, their price movements are largely independent.

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.

Returns By Period

In the year-to-date period, ARRNF achieves a 39.00% return, which is significantly higher than ATAI's 10.76% return.

ARRNF

• 1D: -7.33%
• 1M: 11.33%
• YTD: 39.00%
• 6M: 8.55%
• 1Y: 58.86%
• 3Y*: 41.65%
• 5Y*: 70.94%
• 10Y*: —

ATAI

• 1D: -5.82%
• 1M: 7.86%
• YTD: 10.76%
• 6M: 11.58%
• 1Y: 92.77%
• 3Y*: 37.04%
• 5Y*: —
• 10Y*: —

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

ARRNF vs. ATAI - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
ARRNF American Rare Earths Limited	39.00%	23.89%	41.25%	-11.60%	4.42%	550.00%
ATAI Atai Life Sciences N.V.	10.76%	207.52%	-5.67%	-46.99%	-65.14%	-60.77%

Correlation

The correlation between ARRNF and ATAI is 0.06, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.06
Correlation (3Y) Calculated over the trailing 3-year period	0.10
Correlation (All Time) Calculated using the full available price history since Jun 21, 2021	0.08

Fundamentals

Market Cap ARRNF : $162.68M ATAI : $1.62B
EPS ARRNF : -$0.02 ATAI : -$2.67
PB Ratio ARRNF : 3.38 ATAI : 8.15
Total Revenue (TTM) ARRNF : -$128.85K ATAI : $3.49M
Gross Profit (TTM) ARRNF : -$385.87K ATAI : $3.49M
EBITDA (TTM) ARRNF : -$12.72M ATAI : -$663.38M

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: 63
ARRNF Sharpe Ratio Rank: 57
ARRNF Sortino Ratio Rank: 73
ARRNF Omega Ratio Rank: 71
ARRNF Calmar Ratio Rank: 59
ARRNF Martin Ratio Rank: 54

ATAI

ATAI Risk / Return Rank: 73
ATAI Sharpe Ratio Rank: 75
ATAI Sortino Ratio Rank: 76
ATAI Omega Ratio Rank: 73
ATAI Calmar Ratio Rank: 73
ATAI Martin Ratio Rank: 66

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	0.47	1.16	-0.69
Sortino ratio: Return per unit of downside risk	1.93	2.07	-0.14
Omega ratio: Gain probability vs. loss probability	1.24	1.25	-0.02
Calmar ratio: Return relative to maximum drawdown	0.86	1.94	-1.09
Martin ratio: Return relative to average drawdown	1.21	3.16	-1.95
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 0.47, which is lower than the ATAI Sharpe Ratio of 1.16. The chart below compares the historical Sharpe Ratios of ARRNF and ATAI, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	ARRNF	ATAI	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.47	1.16	-0.69
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.23	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.18	-0.31	+0.49

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 (3Y) Largest decline over 3 years	-69.13%	-59.23%	-9.90%
Max Drawdown (5Y) Largest decline over 5 years	-83.01%	—	—
Current Drawdown Current decline from peak	-57.09%	-77.22%	+20.13%
Average Drawdown Average peak-to-trough decline	-46.24%	-79.77%	+33.53%
Ulcer Index Depth and duration of drawdowns from previous peaks	48.94%	29.45%	+19.49%

Volatility

ARRNF vs. ATAI - Volatility Comparison

American Rare Earths Limited (ARRNF) has a higher volatility of 23.12% compared to Atai Life Sciences N.V. (ATAI) at 16.28%. This indicates that ARRNF's price experiences larger fluctuations and is considered to be riskier 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	23.12%	16.28%	+6.84%
Volatility (6M) Calculated over the trailing 6-month period	49.61%	49.12%	+0.49%
Volatility (1Y) Calculated over the trailing 1-year period	126.38%	80.65%	+45.73%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	314.60%	83.69%	+230.91%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	290.52%	83.69%	+206.83%

Dividends

ARRNF vs. ATAI - Dividend Comparison

Neither ARRNF nor ATAI has paid dividends to shareholders.

Tickers have no history of dividend payments

Financials

Frequently Asked Questions

Can I hold both ARRNF and ATAI in my portfolio?

ARRNF and ATAI have a correlation of 0.06, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ARRNF or ATAI?

ARRNF has higher volatility (23.12%) compared to ATAI (16.28%). In terms of maximum drawdown, ARRNF dropped -83.01% vs ATAI's -94.77%.

Which has better risk-adjusted returns?

ATAI currently has the higher Sharpe Ratio (1.16 vs 0.47), 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.