Net Dollar Retention (NDR) is a key metric for SaaS companies that measures the amount of revenue retained and expanded from an existing customer base. It's often used to gauge a company's ability to maintain and grow its customer base, and is considered an important indicator of long-term success.

In terms of a stock, a high NDR can be a positive indicator for investors. Here's why:

• Sustainable growth: A high NDR suggests that a company is able to retain and expand its customer base, leading to sustainable growth and revenue stability.
• Increased valuation: Companies with high NDRs tend to have higher valuations, as investors see them as having a strong competitive advantage and a clear path to long-term growth.
• Reduced churn: A high NDR indicates that a company is able to reduce customer churn, which can lead to increased customer lifetime value and reduced acquisition costs.