Updated Mar 10, 2026 · 2187 articles
Insights
Research, news and field guides on institutional positioning. Powered by real SEC filings — 13F, 13D/G, Form 4.
Sundar Pichai Sold Alphabet Stock Worth $795M in Career Form 4 Filings, With the Latest Batch in January 2026
Alphabet CEO Sundar Pichai has reported $794.9M in career stock sales per Form 4 data. His most recent filing from February 2026 covers January 2026 transactions.
Alex RiveraMark Zuckerberg Has Sold Over $20 Billion in Meta Stock Through Systematic 10b5-1 Plans Since 2012
Meta co-founder Mark Zuckerberg has reported $20.5B in career Form 4 sales, all executed through pre-arranged 10b5-1 trading plans. His most recent batch sold in October 2025.
Alex RiveraLegal & General's $451B Q4 2025 Filing Put 7.1% Into Nvidia — the Highest NVDA Weight Among Non-Concentrated Filers
UK's largest asset manager held $450.9B in Q4 2025 with Nvidia at 7.09% and Apple at 6.66%. The top-3 concentration of 19.3% is notably higher than comparable diversified managers.
Alex RiveraWells Fargo's $549B Q4 2025 Filing Built an ETF Fortress: SPY, IVV, QQQ, and ITOT Control 9.7% of the Book
Wells Fargo's Q4 2025 13F shows $549.1B across 6,616 holdings. Four ETFs (SPY, IVV, QQQ, ITOT) account for $53.8B — a 9.7% allocation to index wrappers that dwarfs the individual stock positions below.
Sarah MitchellWellington Management's $571B Q4 2025 Filing Hides a Healthcare Conviction Bet Beneath the Mega-Cap Surface
Wellington Management held $570.7B across 1,878 positions in Q4 2025. Eli Lilly and Merck sit at #7 and #8, giving healthcare a 4.1% share of the top-12 — unusual for a fund this size.
Marcus ChenUBS Group's $617B Q4 2025 Filing Cut SPY by Half While Quietly Accumulating Its Own Stock
UBS Group AG cut its SPY ETF position by more than half (from $27B to $12.3B) in Q4 2025 while growing its self-owned UBS stock to $6.8B — a restructuring that reshuffled the entire top-15.
Alex RiveraCharles Schwab Investment Management’s Q4 2025 13F Shows a $643.57B Fundamental Indexing Bet Hiding in Plain Sight
Charles Schwab Investment Management’s Q4 2025 13F pairs mega-cap leaders like NVIDIA and Apple with a striking sleeve of in-house fundamental index ETFs, revealing how the manager mixes market-cap exposure with rules-based reweighting.
Alex RiveraInvesco Q4 2025 Portfolio Analysis: The QQQ Parent’s $652B 13F Book Extends a 76% Two-Year Climb
Invesco’s Q4 2025 13F shows a $652.20B disclosed portfolio led by NVIDIA, Microsoft, and Apple, but the bigger story is a broad book that has grown 76% since Q3 2023.
Marcus ChenCitadel’s $666B Q4 Filing: Griffin Swapped a $43B QQQ CUSIP for a $36B Replacement While Ramping NFLX 1,598%
Citadel Advisors hit $666B in Q4 2025, up from $657B. The headline move: exiting a $43B QQQ position under CUSIP 04609e107 and opening a $36B replacement under 46090E103, while simultaneously ramping Netflix shares from 5.6M to 95.1M.
Marcus ChenNorthern Trust’s $784B Custody Book Accumulated Netflix (+883%) and ServiceNow (+400%) in Q4 2025
Northern Trust Corp’s Q4 2025 13F reveals a $784B portfolio with massive accumulation in Netflix (+883% shares) and ServiceNow (+400% shares), while the core remained anchored to NVDA, AAPL, and MSFT.
Alex RiveraSusquehanna’s $868B Options Book Added Gold and Ramped Netflix 857% in Q4 2025
Susquehanna International Group’s Q4 2025 13F reveals an $868B portfolio dominated by put-hedged ETF positions, with a massive 857% increase in Netflix shares and new gold exposure via AGQ, IAU, and Royal Gold.
Marcus Chen$15M in CRWD Stock Sold by CEO George Kurtz After CrowdStrike’s Best Year
CrowdStrike CEO George Kurtz sold approximately $15M in CRWD shares across two transactions in early February 2026. The sales, tied to RSU tax withholdings, came after CrowdStrike posted record FY2026 results with $5.25B in ARR.
Alex RiveraMichael Xie Exercised and Sold $28M of Fortinet While Holding 33M+ Shares Through Trusts
Fortinet co-founder and CTO Michael Xie exercised and sold $28M in FTNT stock on February 2, 2026, bringing his career dispositions to $5.84B. Despite showing zero directly-held shares per Form 4, Xie retains over 33 million shares through family trusts.
Alex RiveraHow to Spot a Sector Rotation in 13F Data Without Seeing One That Isn't There
Sector rotation — when institutions shift capital between sectors — is one of the most over-claimed signals in 13F analysis. This guide shows how to identify real rotations and avoid false positives.
Sarah MitchellHow to Use Stock Detail Pages to Find Who's Buying What — and What the Holder List Actually Shows
Stock detail pages on 13F Insight show which institutions hold a specific stock. This guide explains what the holder list means, how it's ranked, and what it can't tell you.
Sarah MitchellWhat Voting Authority Fields Mean in a 13F Filing — and Why Most Investors Ignore Them
Every 13F holding reports three voting authority fields: sole, shared, and none. These numbers reveal how much control a filer actually has over the shares they report.
Sarah MitchellHow to Read Form 4 Transaction Codes Without Confusing a Gift for a Sale
Form 4 transaction codes (P, S, M, G, A, F, C, J) tell very different stories about insider intent. This guide explains each code and why reading them wrong leads to bad conclusions.
Sarah MitchellJeff Bezos Gifted Over 1 Million Amazon Shares in November 2025 — Continuing a Pattern of Charitable Transfers
Jeff Bezos transferred approximately 1.06 million AMZN shares through gift transactions (code G) in November 2025, worth roughly $245M at market prices.
Alex RiveraPhil Knight Converted 4.5 Million Nike Class B Shares in December 2025 — the Latest Move in a Decade-Long Restructuring
Nike co-founder Phil Knight converted 4.5M NKE Class B shares to Class A in December 2025, continuing a pattern of annual share conversions for estate or trust planning.
Alex RiveraLilly Endowment Sold Eli Lilly Stock Worth Over $111B in Career Form 4 Value — and December 2025 Was Just the Latest Window
Lilly Endowment, the 10%-plus owner of Eli Lilly, has reported $111B+ in career Form 4 sell transactions. The December 2025 filing continues decades of systematic diversification.
Alex Rivera