Updated May 23, 2026 · 798 articles
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Educational guides about 13F filings, insider trading, institutional investing, and how to track smart money moves.
Dividend-Growth Investing: Reading an Income 13F
Owning companies that raise dividends yearly is different from chasing the highest yield. Here's what dividend-growth investing is and how to spot it in a 13F.
Sarah MitchellWhy Active Funds Hold S&P 500 and Nasdaq ETFs
Why would a stock-picker own the index it's trying to beat? Index ETFs in active 13Fs are usually beta sleeves or cash management. Here's how to read them.
Sarah MitchellWhat a 13F Does Not Show: The Blind Spots
A 13F is only a slice of a fund's portfolio. It hides shorts, cash, bonds, and foreign holdings. Here's what 13F filings leave out — and how to read them anyway.
Sarah MitchellWhy a 13F Is Already Weeks Old When You Read It
A 13F reports holdings as of quarter-end and can be filed 45 days later — so it's a rear-view mirror. Here's how the reporting lag works and when it matters.
Sarah MitchellValue vs Growth: Reading a Fund's Style From Its 13F
A fund's holdings reveal whether it's a value or growth investor — often in the first few names. Here's how to read style from a 13F, with real examples.
Sarah MitchellHow to Read a Sovereign Wealth Fund's 13F
Sovereign wealth funds like Temasek and Norges Bank file 13Fs too. Here's what makes them different from index funds and hedge funds — and how to read their holdings.
Sarah MitchellConvertible Securities in a 13F: The Hybrid Holding
Some 13F lines aren't stocks — they're convertible bonds, with a coupon and maturity. Here's what convertibles are, why they appear in 13Fs, and how to read them.
Sarah MitchellHolding Companies in a 13F: When 30% Isn't Concentrated
A 30% stake in Berkshire Hathaway looks extreme but isn't — it's a diversified portfolio in one line. Here's how holding companies change 13F concentration math.
Sarah MitchellWhy Most Large 13Fs Own the Same Megacaps
Nvidia, Microsoft, Apple, Alphabet anchor book after book across very different managers. Here's why large 13Fs cluster in megacaps — and what the exceptions reveal.
Marcus ChenHow to Read an ESG Fund's 13F Holdings
ESG and responsible funds screen stocks on values as well as returns. Here's how that screening shapes a 13F — and what the filing can and can't tell you.
Sarah MitchellWhat Is Quality Investing? How to Read a Quality 13F
Quality investors own durable, profitable businesses and hold them for years. Here's what quality investing means and how to recognize a quality 13F.
Sarah MitchellBeyond Chips: Spotting the AI-Power Trade in 13Fs
Institutions are broadening the AI trade from chips into power and infrastructure. Here's how to spot the AI-power chain in 13F filings, with real examples.
Marcus ChenNew, Add, Trim, Exit: Reading 13F Position Changes
A 13F's 'bought' and 'sold' hide four very different moves. Here's how to read new positions, adds, trims, and exits — and which carry the most signal.
Sarah MitchellLow Turnover: What a Mostly-Flat 13F Is Telling You
When a fund holds its positions flat and the value still drops, that's market beta, not selling. Here's how to read low turnover and 'held roughly flat' 13Fs.
Sarah MitchellQuant vs Discretionary Funds: How to Tell Them Apart in a 13F
A quant fund and a discretionary fund can own the same stocks but mean very different things by it. Here's how to tell them apart from a 13F — and why it matters.
Marcus ChenHow to Read a Fund's Sector Tilt From Its 13F
A fund's sector tilt — where it overweights the market — is a compact summary of its style and bets. Here's how to spot one from the holdings, with real examples.
Marcus ChenBeneficial vs Direct Ownership: How Much Insiders Really Own
A Form 4 can show an insider holding a few thousand shares while they actually control tens of millions. Here's how to read direct vs beneficial ownership.
Sarah MitchellExercise-and-Sell on a Form 4: Why It Looks Worse Than It Is
An option exercise paired with a same-day sale can make an insider's share count look near-zero. Here's how to read exercise-and-sell Form 4 filings correctly.
Sarah MitchellThe Mega-Bet: When a Fund Puts a Third in One Stock
Some hedge funds put 30% or more of their book in a single stock - by conviction, not control. That outsized bet is the purest signal of conviction, and of risk. Here is how to read it.
Sarah MitchellHow to Spot a Defensive 13F: Reading a Risk-Off Book
No single line proves a manager has turned cautious, but a constellation - cash, staples, utilities, gold, trimmed growth - does. Here is how to read a risk-off posture in a 13F.
Sarah Mitchell