Free NotebookLM Prompts for Stock Analysis: Like Having a Personal Analyst Team, 10x Faster /By Longtunman
Every year, public companies release annual reports that average 200 to 500 pages. Meanwhile, every quarter, they announce earnings results along with future business outlooks.
For diligent investors who want to study 10 different companies thoroughly, this could mean reading thousands of pages. Such a task could take weeks or even months.
By the time you finish, the stock price might have already reflected all the good news.
This doesn't even account for the thousands of companies listed specifically in the U.S. stock market.
So, how should we prompt NotebookLM to act as a personal analyst team—one that spots what others might miss and helps retail investors understand businesses faster than ever?
Longtunman will reveal the techniques.
The standout feature of NotebookLM is that it uses only the data you provide, without pulling external information. This makes it perfect for reading financial statements.
Therefore, before prompting, you must upload the annual reports (Form 10-K) or quarterly reports (Form 10-Q). You can even upload reports from several consecutive years to allow NotebookLM to perform a more detailed and accurate trend analysis.
Now, it’s time to prompt. Here are the prompts categorized by essential stock analysis domains:
1. Business Model Deep Dive
To understand how the company makes money and whether it holds a competitive edge.
- "Summarize the revenue breakdown by product category and geography, and identify which segment has the highest gross profit margin."
This examines revenue and profit composition to see if the company is robust. Some companies have high revenue but low profit, or rely too heavily on a single product, which is risky.
- "Identify the main suppliers or raw material sources and analyze the company’s bargaining power or available backup options."
This checks the supply chain to see if the company is being "suffocated" by suppliers. If a major supplier raises prices, profits could vanish instantly.
- "Analyze the core customer base. Is there a dependency on any single customer for more than 10% of total revenue? Are customer contracts typically short-term or long-term?"
This looks at customer concentration. If a major client stops buying, the company could collapse overnight.
- "Identify what the company claims as its competitive advantages, such as patents, concessions, brand, or economies of scale."
This identifies the "Moat" to see if there are barriers against competitors. Without a moat, rivals will eventually enter and trigger a race to the bottom on pricing.
2. Financial Health Check
To evaluate performance and determine if the numbers are real or "window-dressed."
- "Analyze the trends in revenue and net profit over the past period. Have they increased or decreased, and for what reasons?"
This looks at past performance to help forecast the company's future trajectory.
- "Compare net profit with Cash Flow from Operations (CFO). If there is a significant discrepancy, identify which accounting items are responsible."
This compares profit to actual cash. Accounting profits can be manipulated, but cash is much harder to fake. If profits grow but no cash enters the company, it might be "phantom profit" or an inability to collect from customers.
- "Analyze the cash conversion cycle by extracting the Days Sales Outstanding (DSO), Days Inventory Outstanding (DIO), and Days Payable Outstanding (DPO) for the past 3 years."
This measures efficiency in money management. A short or negative cycle means the company is very skilled at using other people’s money to generate profit.
- "Summarize all interest-bearing debt, identifying the ratio of short-term vs. long-term debt, and check for any D/E Ratio covenants that must not be exceeded."
This examines debt structure. If a company violates bank conditions, loans might be recalled immediately, which is often the start of a crisis.
- "Find and summarize any special items, such as gains from asset sales, impairment charges, or foreign exchange losses."
This identifies one-time items. Beginners often fall into the trap of stocks with "exploding profits" that actually came from selling land or currency gains—things that won't happen again next year.
3. Vision and Growth Plans
To estimate the company's future value, as stock prices generally follow earnings growth.
- "Summarize the investment budget for new projects, specifying project goals, expected launch dates, and estimated incremental revenue."
This looks at Capital Expenditure (CAPEX). Today's investment is tomorrow's revenue. If a company invests nothing, expecting the stock to grow several-fold is nearly impossible.
- "Compare the plans previously announced by management with their actual current performance. Have they met their targets?"
This checks the management's track record. If they promised big things last year but delivered nothing this year, they might just be "selling a dream."
- "Identify the future industry outlook as assessed by management and the strategies the company will use to gain market share."
This gauges market direction. Even a great company will struggle if it's in a dying industry.
4. Risk Discovery
To assess potential downsides.
- "What is the auditor’s opinion on the financial statements?"
This checks the integrity of the numbers. No matter how good the results look, if an auditor expresses doubt or lack of confidence, that is a major red flag.
- "Summarize the top 3 risk factors that could severely impact revenue and the company’s plans to manage those risks."
Management is legally required to disclose risks. This information is often more truthful than what is found in marketing materials.
- "Summarize any ongoing lawsuits, including the amount claimed and the likelihood of having to set aside reserves for damages."
This evaluates potential liabilities. Some lawsuits could cost more than a company’s entire annual profit.
- "Identify any changes in accounting policies, auditor changes, or resignations of directors/senior executives over the past year."
These are "danger signals." If insiders—who know the business best—are resigning in unison, there is usually bad news hidden beneath the surface.
In conclusion, these are just a few guidelines on how investors can use NotebookLM to help analyze and summarize annual reports and financial statements. It significantly reduces "homework" time and increases business analysis efficiency.
The true power of NotebookLM goes far beyond this; it depends on your prompting techniques and your creativity in asking follow-up questions to dig even deeper.