Updated Mar 9, 2026 · 660 articles
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Educational guides about 13F filings, insider trading, institutional investing, and how to track smart money moves.
What a Reset Quarter Looks Like in 13F Data
Some quarters are just maintenance. Others are portfolio resets. Here is how to tell the difference in 13F data.
Sarah MitchellHow to Read a First-Time 13F Without Inventing a Track Record
A first filing is a snapshot, not a pattern. Here is how to get useful signal from a new filer without pretending you already know its style.
Sarah MitchellHow to Read a 13F When ETFs Dominate the Top 10
ETF-heavy top holdings are not empty signal. They often tell you the actual allocation framework of the portfolio.
Sarah MitchellWhat Holdings Count Really Tells You in a 13F
Holdings count is not a trivia field. It changes how you should interpret concentration, diversification, and the usefulness of a manager's top positions.
Sarah MitchellHow to Use Historical Holdings Without Confusing Price Moves for Real Buying
A position can get bigger because the manager bought more shares, because the stock rallied, or both. Historical holdings help you tell the difference.
Sarah MitchellHow to Use Filer Groups to Compare Managers Without Chasing Noise
The fastest way to get misled by 13F data is to compare random managers with totally different mandates. Filer groups fix that.
Sarah MitchellConsensus vs Combined Holdings: What Each Tool Actually Tells You
Consensus holdings and combined holdings sound similar, but they answer different questions and can mislead you in different ways.
Sarah MitchellHow to Compare Two 13F Filings Using Top-Five Weight, Turnover, and Churn
A practical guide to comparing two institutional filings without getting trapped by holdings count, headline AUM, or one-off position anecdotes.
Sarah MitchellHow to Read ETF-Heavy 13Fs Without Confusing Convenience for Conviction
A practical guide to what ETF-heavy 13F filings really signal, where they help, and why broad wrappers do not automatically erase portfolio structure.
Sarah MitchellHow to Read Whale Scores: Measuring Institutional Investor Quality Without Worshipping Size Alone
A practical guide to what WhaleScore is actually trying to measure, where it helps, and why raw AUM alone is a bad shortcut for institutional quality.
Sarah MitchellWhat a 13D Filing Really Means: How to Read Activist Stakes, Passive Stakes, and Amendments
A practical explainer on how 13D and 13G filings work, why amendments matter, and how to read control intent without overreacting to every percentage point.
Sarah MitchellHow to Read a Big 13F AUM Jump Without Mistaking It for a New Investment Thesis
A huge AUM swing can look dramatic, but it does not always mean a manager suddenly changed its mind. Here's how to separate a portfolio reset from real conviction.
Sarah MitchellBenchmark Wrappers vs Direct Ownership: How to Read Both Together
A filing can own broad-market ETFs and the same flagship stocks directly. The right reading comes from looking at both layers together.
Sarah MitchellHow to Spot a Value-Growth Barbell in a 13F
Some managers balance value and growth explicitly through sleeves such as VTV and VUG. Here is how to recognize that structure.
Sarah MitchellHow to Read Trading-Firm 13Fs
Trading-firm filings often mix benchmark wrappers, tactical ETFs, and high-beta single names. They need a different reading than advisor or pension books.
Sarah MitchellHow to Read Custodian-Bank 13Fs
Custodian-bank filings often share the same market leaders, but subtle differences in breadth still matter.
Sarah MitchellHow to Read Pension and Sovereign 13Fs Without Expecting Hedge-Fund Behavior
Pension and sovereign-style filers often care more about hierarchy and durability than about flashy quarter-to-quarter trades.
Sarah MitchellHow to Read Defensive Stocks Inside a Growth-Heavy 13F
A defensive stock near the top of a growth-heavy filing often tells you the manager is shaping outcomes, not just chasing a single market narrative.
Sarah MitchellWhat Top-Three Concentration Tells You About a Fund
Top-three concentration is a fast way to understand whether the very front of a portfolio is doing too much of the work.
Sarah MitchellWhat SPY, IVV, and VOO Really Signal in a 13F
Broad-market ETF lines often say more about benchmark architecture than about a manager being passive or uninteresting.
Sarah Mitchell