The Microcap Minute Classroom. Module 5, chapter 1: What a deep dive is (and why most people skip the work) <div class="learn" markdown="1"> **What you will learn** - What a deep dive actually is: reasoning, not arithmetic - The three checks every real deep dive runs, in order - Why the company's own filings beat any summary website - Why most people never do one, and why that is your advantage </div> Imagine buying a used phone from a stranger. You can take the seller's word that it works, or you can switch it on, check the battery, look for cracks and test the camera yourself. Checking takes twenty minutes. Most people skip it, then act surprised when the battery dies in a month. A deep dive is the checking. It means reading a company's own reports, building the important numbers yourself, and only then deciding what the business is worth. Not a summary of the reports. Not a video about the reports. The reports themselves. Notice what a deep dive is not: arithmetic. Any ratio a formula produces, a screen computes faster than you can. The dive is the reasoning no screen reaches: what the business actually is, whether its advantage holds, what five years of filings say that one year never will. A paragraph a formula could have written belongs in a table. The reasoning always runs three checks, in this module's order. Business quality: eighteen plain questions about what the company makes, who buys it, who competes and what stops copycats (chapter 2). The moat: how deep, how long it lasts, and who is actually locked in (chapter 3). The forensic layer: what the accounts might be hiding (chapter 4). A dive that runs only one has a hole in it. In America, every listed company must file these reports with the Securities and Exchange Commission, or SEC, roughly the American cousin of SEBI in India. The big one is the 10-K: an annual report the law forces the company to write, covering the business, the risks and three years of audited accounts. Apple's 10-K for fiscal 2025 was filed on 31 October 2025, free for anyone on Earth on SEC.gov's system, called EDGAR. Between 10-Ks come the 10-Qs, shorter quarterly updates, and once a year the proxy statement, covering who owns the company and what the bosses are paid. Notice the shape: Item 1 describes the business, Item 1A lists the risks, Item 8 holds the accounts. Every US company follows this skeleton, so one 10-K teaches you all of them. Here is what a screen gives you for free, and it is genuinely useful: Notice how much is there: price, market value, ratios, all computed for you. And what is missing: where the numbers came from, and whether the year was unusual. A screen can tell you Apple's revenue was $416.2 billion in fiscal 2025 (about Rs 36 lakh crore). It cannot tell you the year before carried a one time tax charge of $10.2 billion that made growth look worse than it was; that sentence sits in a 10-K note on income taxes, and we open it in chapter 6. So why does almost nobody do this? It is slow: a proper first pass takes a weekend, not ten minutes. Filings look intimidating until you learn you only need five or six sections. And screens feel like knowledge: a ratio with two decimals looks precise even when the inputs were stitched together carelessly. In the Indian deep dive this module's Apple dive mirrors, the exported data disagreed with the audited accounts on eleven figures, including the one the analysis leaned on hardest. The person who reads the filing catches that; the person who reads the screen never knows. A twelve year old with a browser sees exactly what a New York fund manager sees. The filings are the level playing field, and almost nobody stands on it. One last thing, because it trips up every beginner: Apple's fiscal year ends on the last Saturday of September (the 10-K says exactly that), so fiscal 2025 ended on 27 September 2025. When this module says a year, it means Apple's year. <div class="try" markdown="1"> **Try it yourself** Go to sec.gov and open EDGAR's company search. Type "Apple" and find the company page (its SEC identity number, or CIK, is 0000320193). Open the most recent 10-K, search inside it for "total net sales", and check the 2025 figure is $416,161 million. You have just read your first line of a real filing. Ten minutes, free, no account needed. </div> <div class="takeaways" markdown="1"> **Key takeaways** - A deep dive is reasoning, not arithmetic: read the filings, build the key numbers, then form a view. - Every real dive runs three checks: business quality, the moat and how long it lasts, and the forensic layer. - The 10-K is the annual source of record; 10-Qs update it quarterly; the proxy covers ownership and pay. - The work is slow, and that is exactly why it still works. - Apple's fiscal year ends on the last Saturday of September, not in December. </div>. I am Ritu, a synthetic voice, and the words I am reading are Ayush Agrawal's.

# What a deep dive is (and why most people skip the work) <div class="learn" markdown="1"> **What you will learn** - What a deep dive actually is: reasoning, not arithmetic - The three checks every real deep dive runs, in order - Why the company's own filings beat any summary website - Why most people never do one, and why that is your advantage </div> Imagine buying a used phone from a stranger. You can take the seller's word that it works, or you can switch it on, check the battery, look for cracks and test the camera yourself. Checking takes twenty minutes. Most people skip it, then act surprised when the battery dies in a month. A deep dive is the checking. It means reading a company's own reports, building the important numbers yourself, and only then deciding what the business is worth. Not a summary of the reports. Not a video about the reports. The reports themselves. Notice what a deep dive is not: arithmetic. Any ratio a formula produces, a screen computes faster than you can. The dive is the reasoning no screen reaches: what the business actually is, whether its advantage holds, what five years of filings say that one year never will. A paragraph a formula could have written belongs in a table. The reasoning always runs three checks, in this module's order. Business quality: eighteen plain questions about what the company makes, who buys it, who competes and what stops copycats (chapter 2). The moat: how deep, how long it lasts, and who is actually locked in (chapter 3). The forensic layer: what the accounts might be hiding (chapter 4). A dive that runs only one has a hole in it. In America, every listed company must file these reports with the Securities and Exchange Commission, or SEC, roughly the American cousin of SEBI in India. The big one is the 10-K: an annual report the law forces the company to write, covering the business, the risks and three years of audited accounts. Apple's 10-K for fiscal 2025 was filed on 31 October 2025, free for anyone on Earth on SEC.gov's system, called EDGAR. Between 10-Ks come the 10-Qs, shorter quarterly updates, and once a year the proxy statement, covering who owns the company and what the bosses are paid. Notice the shape: Item 1 describes the business, Item 1A lists the risks, Item 8 holds the accounts. Every US company follows this skeleton, so one 10-K teaches you all of them. Here is what a screen gives you for free, and it is genuinely useful: Notice how much is there: price, market value, ratios, all computed for you. And what is missing: where the numbers came from, and whether the year was unusual. A screen can tell you Apple's revenue was $416.2 billion in fiscal 2025 (about Rs 36 lakh crore). It cannot tell you the year before carried a one time tax charge of $10.2 billion that made growth look worse than it was; that sentence sits in a 10-K note on income taxes, and we open it in chapter 6. So why does almost nobody do this? It is slow: a proper first pass takes a weekend, not ten minutes. Filings look intimidating until you learn you only need five or six sections. And screens feel like knowledge: a ratio with two decimals looks precise even when the inputs were stitched together carelessly. In the Indian deep dive this module's Apple dive mirrors, the exported data disagreed with the audited accounts on eleven figures, including the one the analysis leaned on hardest. The person who reads the filing catches that; the person who reads the screen never knows. A twelve year old with a browser sees exactly what a New York fund manager sees. The filings are the level playing field, and almost nobody stands on it. One last thing, because it trips up every beginner: Apple's fiscal year ends on the last Saturday of September (the 10-K says exactly that), so fiscal 2025 ended on 27 September 2025. When this module says a year, it means Apple's year. <div class="try" markdown="1"> **Try it yourself** Go to sec.gov and open EDGAR's company search. Type "Apple" and find the company page (its SEC identity number, or CIK, is 0000320193). Open the most recent 10-K, search inside it for "total net sales", and check the 2025 figure is $416,161 million. You have just read your first line of a real filing. Ten minutes, free, no account needed. </div> <div class="takeaways" markdown="1"> **Key takeaways** - A deep dive is reasoning, not arithmetic: read the filings, build the key numbers, then form a view. - Every real dive runs three checks: business quality, the moat and how long it lasts, and the forensic layer. - The 10-K is the annual source of record; 10-Qs update it quarterly; the proxy covers ownership and pay. - The work is slow, and that is exactly why it still works. - Apple's fiscal year ends on the last Saturday of September, not in December. </div>

That was chapter 1 of module 5. The text, the pictures and the exercise are on the lesson page. Thank you for listening.