RGEN vs. SNDK

Last updated Apr 2, 2026

Compare and contrast key facts about Repligen Corporation (RGEN) and Sandisk Corp (SNDK).

Performance

RGEN vs. SNDK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Repligen Corporation (RGEN) and Sandisk Corp (SNDK). The values are adjusted to include any dividend payments, if applicable.

RGEN vs. SNDK - Yearly Performance Comparison

	2026 (YTD)	2025
RGEN Repligen Corporation	-27.79%	-0.53%
SNDK Sandisk Corp	191.82%	388.44%

Fundamentals

Market Cap RGEN : $6.69B SNDK : $108.07B
EPS RGEN : $0.86 SNDK : -$6.94
PS Ratio RGEN : 9.06 SNDK : 11.64
PB Ratio RGEN : 3.18 SNDK : 10.58
Total Revenue (TTM) RGEN : $738.25M SNDK : $8.93B
Gross Profit (TTM) RGEN : $386.41M SNDK : $3.11B
EBITDA (TTM) RGEN : $161.65M SNDK : -$589.00M

Returns By Period

In the year-to-date period, RGEN achieves a -27.79% return, which is significantly lower than SNDK's 191.82% return.

RGEN

• 1D: 0.42%
• 1M: -5.32%
• YTD: -27.79%
• 6M: -18.85%
• 1Y: -7.92%
• 3Y*: -11.09%
• 5Y*: -9.55%
• 10Y*: 15.96%

SNDK

• 1D: 9.03%
• 1M: 11.90%
• YTD: 191.82%
• 6M: 471.94%
• 1Y: 1,339.89%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

Return for Risk

RGEN vs. SNDK — Risk / Return Rank

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

RGEN

RGEN Risk / Return Rank: 32
RGEN Sharpe Ratio Rank: 32
RGEN Sortino Ratio Rank: 31
RGEN Omega Ratio Rank: 31
RGEN Calmar Ratio Rank: 34
RGEN Martin Ratio Rank: 33

SNDK

SNDK Risk / Return Rank: 99
SNDK Sharpe Ratio Rank: 100
SNDK Sortino Ratio Rank: 99
SNDK Omega Ratio Rank: 98
SNDK Calmar Ratio Rank: 100
SNDK Martin Ratio Rank: 100

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.

RGEN vs. SNDK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Repligen Corporation (RGEN) and Sandisk Corp (SNDK). 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.

	RGEN	SNDK	Difference
Sharpe ratio Return per unit of total volatility	-0.17	13.55	-13.72
Sortino ratio Return per unit of downside risk	0.10	5.32	-5.23
Omega ratio Gain probability vs. loss probability	1.01	1.77	-0.76
Calmar ratio Return relative to maximum drawdown	-0.19	35.26	-35.45
Martin ratio Return relative to average drawdown	-0.45	88.02	-88.47
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RGEN vs. SNDK - Sharpe Ratio Comparison

The current RGEN Sharpe Ratio is -0.17, which is lower than the SNDK Sharpe Ratio of 13.55. The chart below compares the historical Sharpe Ratios of RGEN and SNDK, 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

	RGEN	SNDK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.17	13.55	-13.72
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.19	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.35	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.09	10.44	-10.36

Correlation

The correlation between RGEN and SNDK is 0.30, 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

RGEN vs. SNDK - Dividend Comparison

Neither RGEN nor SNDK has paid dividends to shareholders.

Tickers have no history of dividend payments

Drawdowns

RGEN vs. SNDK - Drawdown Comparison

The maximum RGEN drawdown since its inception was -98.28%, which is greater than SNDK's maximum drawdown of -47.50%. Use the drawdown chart below to compare losses from any high point for RGEN and SNDK.

Drawdown Indicators

	RGEN	SNDK	Difference
Max Drawdown Largest peak-to-trough decline	-98.28%	-47.50%	-50.78%
Max Drawdown (1Y) Largest decline over 1 year	-36.07%	-37.86%	+1.79%
Max Drawdown (5Y) Largest decline over 5 years	-66.41%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-66.41%	—	—
Current Drawdown Current decline from peak	-63.51%	-10.28%	-53.23%
Average Drawdown Average peak-to-trough decline	-63.36%	-15.40%	-47.96%
Ulcer Index Depth and duration of drawdowns from previous peaks	15.43%	15.39%	+0.04%

Volatility

RGEN vs. SNDK - Volatility Comparison

The current volatility for Repligen Corporation (RGEN) is 14.23%, while Sandisk Corp (SNDK) has a volatility of 30.47%. This indicates that RGEN experiences smaller price fluctuations and is considered to be less risky than SNDK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RGEN	SNDK	Difference
Volatility (1M) Calculated over the trailing 1-month period	14.23%	30.47%	-16.24%
Volatility (6M) Calculated over the trailing 6-month period	28.35%	80.77%	-52.42%
Volatility (1Y) Calculated over the trailing 1-year period	47.91%	100.02%	-52.11%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	49.99%	97.99%	-48.00%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	45.62%	97.99%	-52.37%

Financials

RGEN vs. SNDK - Profitability Comparison

The chart below illustrates the profitability comparison between Repligen Corporation and Sandisk Corp over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

RGEN - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Repligen Corporation reported a gross profit of 104.00M and revenue of 197.91M. Therefore, the gross margin over that period was 52.6%.

SNDK - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Sandisk Corp reported a gross profit of 1.54B and revenue of 3.03B. Therefore, the gross margin over that period was 50.9%.

RGEN - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Repligen Corporation reported an operating income of 18.00M and revenue of 197.91M, resulting in an operating margin of 9.1%.

SNDK - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Sandisk Corp reported an operating income of 1.07B and revenue of 3.03B, resulting in an operating margin of 35.2%.

RGEN - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Repligen Corporation reported a net income of 13.00M and revenue of 197.91M, resulting in a net margin of 6.6%.

SNDK - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Sandisk Corp reported a net income of 803.00M and revenue of 3.03B, resulting in a net margin of 26.6%.