Updated May 23, 2026 · 2142 articles
Insights
Research, news and field guides on institutional positioning. Powered by real SEC filings — 13F, 13D/G, Form 4.
Beyond 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 ChenMan Group Q1 2026: Rotating Within the Megacaps
The world's largest listed hedge fund added Microsoft and Eli Lilly while trimming Amazon and Nvidia in Q1 2026 — a measured rotation within its megacap book.
Marcus ChenFederated Hermes Q1 2026: Buying AI and the Power Grid
Federated Hermes added to AI chips (Nvidia, Broadcom) and the power behind them (GE Vernova +22%, Chevron) in Q1 2026 — buying the full AI-infrastructure chain.
Marcus ChenRenaissance Technologies Q1 2026: A Quant Book's Breadth
Renaissance's 13F holds just 14% in its top 10 and 86% in a long tail — a model-driven quant book. Q1 2026 moves like Nvidia +190% are signal rebalancing.
Marcus ChenLazard Q1 2026: Adding Across Tech and Infrastructure
Lazard broadly added in Q1 2026 — Nvidia +23%, American Tower +20%, Crown Castle +16% — barbelling AI growth with rate-sensitive infrastructure REITs.
Marcus ChenLoomis Sayles Q1 2026: A Concentrated Megacap-Growth Book
Loomis Sayles held nearly 10% of its $74.33B book in Nvidia and 38% in six megacap-growth leaders through a down quarter — growth conviction held flat.
Marcus ChenHarris Associates Q1 2026: Oakmark's Big Salesforce Add
Oakmark's Harris Associates lifted Salesforce 52% to its top holding in Q1 2026 while trimming energy — a value manager underwriting large-cap software.
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 MitchellMorningstar Founder Mansueto Keeps Trimming, Still Owns 37%
Morningstar Executive Chairman Joe Mansueto sold ~$3.72M in MORN in mid-May 2026 under a 10b5-1 plan, but still controls about 37.5% of the company.
Alex RiveraCloudflare's Co-Founders Keep Selling Into the AI Story
Cloudflare President Michelle Zatlyn sold ~$92.7M over six months alongside CEO Matthew Prince's ~$187.3M — structured founder selling as AI demand accelerates.
Alex RiveraArista's CEO and CTO Sell Into the AI Networking Boom
Arista Networks CEO Jayshree Ullal and CTO Kenneth Duda both exercised options and sold in May 2026 — plan-driven sales as the company doubled its AI revenue target.
Alex RiveraGQG Partners Q1 2026: A Big New Bet on Chevron
Rajiv Jain's GQG Partners lifted Chevron 631% and added to Petrobras in Q1 2026 — an energy pivot inside one of the most concentrated large 13F books.
Marcus ChenArtisan Partners Q1 2026: A Financials-Heavy Value Book
Artisan's focused ~330-name book leans hard into financials — Arch Capital, BNY Mellon, Schwab, Amex, Citi, Berkshire — and held steady through a -6.7% AUM quarter.
Marcus ChenTudor Q1 2026: Cutting Small-Caps, Doubling Gold
Paul Tudor Jones' macro fund trimmed its Russell 2000 and Nasdaq ETF sleeves while more than doubling gold and tripling Tesla in Q1 2026 — a clean risk rotation.
Marcus ChenEnsign Peak Q1 2026: A $53.67B Book That Barely Trades
The LDS Church's investment arm holds a concentrated megacap-tech core flat across roughly 1,700 positions. Its Q1 2026 AUM slide is market beta, not selling.
Marcus Chen