ERO vs. RDDT

Last updated Jul 11, 2026

ERO (Ero Copper Corp) and RDDT (Reddit, Inc.) are both stocks. ERO operates in Copper (Basic Materials), while RDDT operates in Internet Content & Information (Communication Services). Over the past year, ERO returned 69.40% vs 34.17% for RDDT. At a 0.22 correlation, their price movements are largely independent.

Performance

ERO vs. RDDT - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Ero Copper Corp (ERO) and Reddit, Inc. (RDDT). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ERO achieves a -9.58% return, which is significantly higher than RDDT's -15.02% return.

ERO

• 1D: 2.08%
• 1M: -7.65%
• 6M: -12.61%
• YTD: -9.58%
• 1Y: 69.40%
• 3Y*: 7.17%
• 5Y*: 4.29%
• 10Y*: —

RDDT

• 1D: -2.48%
• 1M: 12.74%
• 6M: -20.13%
• YTD: -15.02%
• 1Y: 34.17%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

ERO vs. RDDT - Yearly Performance Comparison

	2026 (YTD)	2025	2024
ERO Ero Copper Corp	-9.58%	109.87%	-29.13%
RDDT Reddit, Inc.	-15.02%	40.64%	247.74%

Correlation

The correlation between ERO and RDDT is 0.10, 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	0.10
Correlation (All Time) Calculated using the full available price history since Mar 21, 2024	0.22

The correlation between ERO and RDDT shifts across timeframes, from 0.10 (1 year) to 0.22 (all time), reflecting how their relationship changes across market environments.

Fundamentals

Market Cap ERO : $2.67B RDDT : $37.62B
EPS ERO : $2.79 RDDT : $3.49
PE Ratio ERO : 9.16 RDDT : 55.97
PS Ratio ERO : 2.89 RDDT : 16.01
PB Ratio ERO : 2.44 RDDT : 12.44
Total Revenue (TTM) ERO : $925.20M RDDT : $2.47B
Gross Profit (TTM) ERO : $394.67M RDDT : $2.26B
EBITDA (TTM) ERO : $528.87M RDDT : $655.01M

Return for Risk

ERO vs. RDDT — Risk / Return Rank

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

ERO

ERO Risk / Return Rank: 77
ERO Sharpe Ratio Rank: 82
ERO Sortino Ratio Rank: 76
ERO Omega Ratio Rank: 75
ERO Calmar Ratio Rank: 79
ERO Martin Ratio Rank: 76

RDDT

RDDT Risk / Return Rank: 62
RDDT Sharpe Ratio Rank: 64
RDDT Sortino Ratio Rank: 65
RDDT Omega Ratio Rank: 61
RDDT Calmar Ratio Rank: 61
RDDT Martin Ratio Rank: 58

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.

ERO vs. RDDT - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Ero Copper Corp (ERO) and Reddit, Inc. (RDDT). 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.

	ERO	RDDT	Difference
Sharpe ratio: Return per unit of total volatility	1.28	0.54	+0.74
Sortino ratio: Return per unit of downside risk	1.76	1.22	+0.54
Omega ratio: Gain probability vs. loss probability	1.23	1.14	+0.09
Calmar ratio: Return relative to maximum drawdown	1.94	0.67	+1.27
Martin ratio: Return relative to average drawdown	4.11	1.18	+2.93

ERO vs. RDDT - Sharpe Ratio Comparison

The current ERO Sharpe Ratio is 1.28, which is higher than the RDDT Sharpe Ratio of 0.54. The chart below compares the historical Sharpe Ratios of ERO and RDDT, 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

ERO vs. RDDT - Drawdown Comparison

The maximum ERO drawdown since its inception was -67.17%, which is greater than RDDT's maximum drawdown of -61.41%. Use the drawdown chart below to compare losses from any high point for ERO and RDDT.

Drawdown Indicators

	ERO	RDDT	Difference
Max Drawdown Largest peak-to-trough decline	-67.17%	-61.41%	-5.76%
Max Drawdown (1Y) Largest decline over 1 year	-37.97%	-54.99%	+17.02%
Max Drawdown (3Y) Largest decline over 3 years	-59.84%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-60.24%	—	—
Current Drawdown Current decline from peak	-32.74%	-27.84%	-4.90%
Average Drawdown Average peak-to-trough decline	-27.05%	-24.77%	-2.28%
Ulcer Index Depth and duration of drawdowns from previous peaks	17.91%	31.23%	-13.32%

Volatility

ERO vs. RDDT - Volatility Comparison

The current volatility for Ero Copper Corp (ERO) is 19.21%, while Reddit, Inc. (RDDT) has a volatility of 23.65%. This indicates that ERO experiences smaller price fluctuations and is considered to be less risky than RDDT based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ERO	RDDT	Difference
Volatility (1M) Calculated over the trailing 1-month period	19.21%	23.65%	-4.44%
Volatility (6M) Calculated over the trailing 6-month period	48.83%	50.05%	-1.22%
Volatility (1Y) Calculated over the trailing 1-year period	57.64%	67.81%	-10.17%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	55.15%	81.35%	-26.20%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	59.39%	81.35%	-21.96%

Dividends

ERO vs. RDDT - Dividend Comparison

Neither ERO nor RDDT has paid dividends to shareholders.

Tickers have no history of dividend payments

Financials

ERO vs. RDDT - Profitability Comparison

The chart below illustrates the profitability comparison between Ero Copper Corp and Reddit, Inc. over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

ERO - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jul 2026, Ero Copper Corp reported a gross profit of 103.33M and revenue of 259.52M. Therefore, the gross margin over that period was 39.8%.

RDDT - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jul 2026, Reddit, Inc. reported a gross profit of 607.14M and revenue of 663.41M. Therefore, the gross margin over that period was 91.5%.

ERO - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jul 2026, Ero Copper Corp reported an operating income of 90.17M and revenue of 259.52M, resulting in an operating margin of 34.7%.

RDDT - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jul 2026, Reddit, Inc. reported an operating income of 182.91M and revenue of 663.41M, resulting in an operating margin of 27.6%.

ERO - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jul 2026, Ero Copper Corp reported a net income of 107.26M and revenue of 259.52M, resulting in a net margin of 41.3%.

RDDT - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jul 2026, Reddit, Inc. reported a net income of 203.98M and revenue of 663.41M, resulting in a net margin of 30.8%.

Frequently Asked Questions

Can I hold both ERO and RDDT in my portfolio?

ERO and RDDT have a correlation of 0.10, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ERO or RDDT?

RDDT has higher volatility (23.65%) compared to ERO (19.21%). In terms of maximum drawdown, ERO dropped -67.17% vs RDDT's -61.41%.

Which has better risk-adjusted returns?

ERO currently has the higher Sharpe Ratio (1.28 vs 0.54), 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.