Updated Apr 26, 2026 · 798 articles
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Educational guides about 13F filings, insider trading, institutional investing, and how to track smart money moves.
How to Read 13D/G Rows When Counts Look Like Zero
Zero-looking 13D/G rows are verification prompts, not automatic exit signals. Here is how to cross-check them with 13F and Form 4 data.
Sarah MitchellHow to Check Data-Center News Against Holder Depth
A practical checklist for pairing AI infrastructure headlines with institutional holder depth, active-manager signals, and the next 13F refresh.
Sarah MitchellHow To Use Options-Heavy Holder Lists Without Overreading Them
Market-maker positions can make a holder list look more aggressive than it really is, especially in volatile product-cycle stocks.
Sarah MitchellHow To Read 13D/G Confluence in Chip Stocks
13D/G confluence can sharpen a chip-stock news read, but only when it is separated from passive ownership and market-maker inventory.
Sarah MitchellHow To Audit AUM Swings Before Copying a Mega-Bank 13F
Large bank 13F swings can reflect custody, client and reporting effects before they reveal a clean investment thesis.
Sarah MitchellHow to Separate Market-Maker 13F Exposure From Conviction
Trading-firm 13Fs can show huge reported value without implying a long-only stock-picking thesis.
Sarah MitchellHow to Read Founder Sales With Beneficial Ownership
Founder sales can look alarming until you compare Form 4 activity with 13D/G beneficial ownership.
Sarah MitchellHow to Check Market News Against Active Holder Depth
A market headline becomes more useful when you test whether active holders are already present in the stock.
Sarah MitchellHow to Use Remaining Ownership After Insider Sales
The share count after an insider sale often matters more than the sale headline itself.
Sarah MitchellHow to Test Auto Show News Against 13F Ownership
Auto-show headlines reveal product strategy; holder data reveals whether institutions are positioned for the outcome.
Sarah MitchellHow to Read Active Holder Depth in Small-Cap Semiconductors
Small semiconductor stocks can look thin until you separate passive scale from active specialist ownership.
Sarah MitchellHow to Compare Airline Fuel News With Holder Depth
Fuel-cost headlines move airline stocks quickly, but holder depth shows whether institutions actually reposition after the shock.
Sarah MitchellHow to Read 13D/G Exit Filings Without False Signals
13D/G exit filings can look dramatic, but investors need to compare them with holder tables, amendments and reporting thresholds before calling an ownership exit.
Sarah MitchellHow to Read Multi-Class Insider Sales Without False Exit Claims
How to Read Multi-Class Insider Sales Without False Exit Claims with a practical checklist for separating ownership structure from headline narrative.
Sarah MitchellHow to Use CEO Succession News With Holder Depth
How to Use CEO Succession News With Holder Depth with a practical checklist for separating ownership structure from headline narrative.
Sarah MitchellHow to Tell a Platform 13F From a Stock-Picking Portfolio
How to Tell a Platform 13F From a Stock-Picking Portfolio with a practical checklist for separating ownership structure from headline narrative.
Sarah MitchellHow to Check Insider Sales Against Beneficial Ownership
Form 4 sale rows can mislead unless investors check Table I, Table II and 13D/G ownership records.
Sarah MitchellHow to Avoid Overreading Mega-Filer 13F Positions
Mega-filer 13Fs are structure maps first and stock-picking signals second.
Sarah MitchellHow to Read Active Holder Count After a Stock News Event
Active holder count helps separate durable institutional sponsorship from passive ownership after a headline.
Sarah MitchellHow to Use Share Counts After a Stock Headline
A practical guide to reading ownership data without confusing passive exposure, price moves, or mechanical insider transactions for conviction.
Sarah Mitchell