RPID vs. RRGB

Last updated Jun 5, 2026

RPID (Rapid Micro Biosystems Inc) and RRGB (Red Robin Gourmet Burgers, Inc.) are both stocks. RPID operates in Medical Devices (Healthcare), while RRGB operates in Restaurants (Consumer Cyclical). Over the past 3 years, RPID returned 24.55%/yr vs -28.95%/yr for RRGB. At a 0.20 correlation, their price movements are largely independent.

Performance

RPID vs. RRGB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Rapid Micro Biosystems Inc (RPID) and Red Robin Gourmet Burgers, Inc. (RRGB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RPID achieves a -31.38% return, which is significantly lower than RRGB's 9.38% return.

RPID

• 1D: 1.53%
• 1M: -19.76%
• YTD: -31.38%
• 6M: -50.62%
• 1Y: -44.26%
• 3Y*: 24.55%
• 5Y*: —
• 10Y*: —

RRGB

• 1D: 0.45%
• 1M: 25.50%
• YTD: 9.38%
• 6M: 8.58%
• 1Y: -31.85%
• 3Y*: -28.95%
• 5Y*: -32.42%
• 10Y*: -22.21%

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

RPID vs. RRGB - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
RPID Rapid Micro Biosystems Inc	-31.38%	222.22%	21.62%	-34.51%	-89.38%	-50.28%
RRGB Red Robin Gourmet Burgers, Inc.	9.38%	-26.23%	-55.97%	123.48%	-66.24%	-41.28%

Correlation

The correlation between RPID and RRGB is 0.09, 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	0.09
Correlation (3Y) Calculated over the trailing 3-year period	0.12
Correlation (All Time) Calculated using the full available price history since Jul 16, 2021	0.20

The correlation between RPID and RRGB shifts across timeframes, from 0.09 (1 year) to 0.20 (all time), reflecting how their relationship changes across market environments.

Fundamentals

EPS RPID : -$1.12 RRGB : -$1.27
PS Ratio RPID : 2.59 RRGB : 0.07
Total Revenue (TTM) RPID : $34.38M RRGB : $1.21B
Gross Profit (TTM) RPID : $5.80M RRGB : $323.96M
EBITDA (TTM) RPID : -$47.18M RRGB : $54.04M

Return for Risk

RPID vs. RRGB — Risk / Return Rank

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

RPID

RPID Risk / Return Rank: 17
RPID Sharpe Ratio Rank: 19
RPID Sortino Ratio Rank: 23
RPID Omega Ratio Rank: 24
RPID Calmar Ratio Rank: 13
RPID Martin Ratio Rank: 8

RRGB

RRGB Risk / Return Rank: 24
RRGB Sharpe Ratio Rank: 23
RRGB Sortino Ratio Rank: 24
RRGB Omega Ratio Rank: 25
RRGB Calmar Ratio Rank: 25
RRGB Martin Ratio Rank: 25

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.

RPID vs. RRGB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Rapid Micro Biosystems Inc (RPID) and Red Robin Gourmet Burgers, Inc. (RRGB). 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.

	RPID	RRGB	Difference
Sharpe ratio: Return per unit of total volatility	-0.51	-0.44	-0.08
Sortino ratio: Return per unit of downside risk	-0.35	-0.29	-0.05
Omega ratio: Gain probability vs. loss probability	0.96	0.97	-0.01
Calmar ratio: Return relative to maximum drawdown	-0.76	-0.49	-0.27
Martin ratio: Return relative to average drawdown	-1.40	-0.85	-0.55
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RPID vs. RRGB - Sharpe Ratio Comparison

The current RPID Sharpe Ratio is -0.51, which is comparable to the RRGB Sharpe Ratio of -0.44. The chart below compares the historical Sharpe Ratios of RPID and RRGB, 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

	RPID	RRGB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.51	-0.44	-0.08
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	-0.43	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	-0.30	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.44	-0.07	-0.37

Drawdowns

RPID vs. RRGB - Drawdown Comparison

The maximum RPID drawdown since its inception was -97.57%, roughly equal to the maximum RRGB drawdown of -97.24%. Use the drawdown chart below to compare losses from any high point for RPID and RRGB.

Drawdown Indicators

	RPID	RRGB	Difference
Max Drawdown Largest peak-to-trough decline	-97.57%	-97.24%	-0.33%
Max Drawdown (1Y) Largest decline over 1 year	-58.23%	-65.19%	+6.96%
Max Drawdown (3Y) Largest decline over 3 years	-58.23%	-83.59%	+25.36%
Max Drawdown (5Y) Largest decline over 5 years	—	-92.47%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-96.49%	—
Current Drawdown Current decline from peak	-91.98%	-95.23%	+3.25%
Average Drawdown Average peak-to-trough decline	-84.12%	-50.20%	-33.92%
Ulcer Index Depth and duration of drawdowns from previous peaks	31.63%	37.66%	-6.03%

Volatility

RPID vs. RRGB - Volatility Comparison

The current volatility for Rapid Micro Biosystems Inc (RPID) is 16.38%, while Red Robin Gourmet Burgers, Inc. (RRGB) has a volatility of 24.93%. This indicates that RPID experiences smaller price fluctuations and is considered to be less risky than RRGB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RPID	RRGB	Difference
Volatility (1M) Calculated over the trailing 1-month period	16.38%	24.93%	-8.55%
Volatility (6M) Calculated over the trailing 6-month period	63.65%	52.90%	+10.75%
Volatility (1Y) Calculated over the trailing 1-year period	86.70%	73.85%	+12.85%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	87.65%	75.59%	+12.06%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	87.65%	73.59%	+14.06%

Dividends

RPID vs. RRGB - Dividend Comparison

Neither RPID nor RRGB has paid dividends to shareholders.

Tickers have no history of dividend payments

Financials

Frequently Asked Questions

Can I hold both RPID and RRGB in my portfolio?

RPID and RRGB have a correlation of 0.09, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RPID or RRGB?

RRGB has higher volatility (24.93%) compared to RPID (16.38%). In terms of maximum drawdown, RPID dropped -97.57% vs RRGB's -97.24%.

Which has better risk-adjusted returns?

RRGB currently has the higher Sharpe Ratio (-0.44 vs -0.51), 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.