Alex Rivera
Breaking News Editor
Breaking News Editor at 13F Insight. First to report on major SEC filings, institutional moves, and regulatory developments.
A note from Alex
Hey, I'm Alex. I spent three and a half years at Bloomberg writing breaking-news pieces about the kind of trades that move tickers in after-hours, and what I learned is that the news cycle moves a lot faster than the explanations do.
That's the gap I'm here to close. When a major insider files a Form 4 at 4:31pm, you should know about it by 5:00 — not in tomorrow's morning newsletter. And you should know what's actually new about it, not just that it happened.
I'll keep my pieces short, my numbers exact, and my opinions out of the lede. If something I wrote ages badly, I'll say so on the record.
Articles by Alex Rivera (827)
- News
Saudi Arabia's Public Investment Fund Holds 6.2% of Take-Two Interactive Per 13G Filing — a $3.6 Billion Gaming Bet
Saudi Arabia's Public Investment Fund disclosed a 6.2% stake (11.4M shares) in Take-Two Interactive in a Schedule 13G/A filed December 31, 2025 — continuing the kingdom's aggressive push into gaming.
- News
Elliott Investment Management Filed a 13D/A on Triple Flag Precious Metals — the Activist Fund's Latest Mining Target
Elliott Investment Management filed a Schedule 13D/A amendment on Triple Flag Precious Metals Corp on December 31, 2025, signaling continued activist engagement with the precious metals streaming company.
- Research
BlackRock's $5.9 Trillion Q4 2025 Filing Has 50,216 Positions — More Than Any Other 13F Filer on Earth
BlackRock's Q4 2025 13F reports $5.92 trillion across a record 50,216 positions. NVDA leads at 6.13%, but the real story is the breadth: 50,000+ line items mapping every corner of U.S. equities.
- News
The Biggest BlackRock Insider Sale of 2025: Laurence Fink Unloaded $30M in Two Days
BlackRock Chairman and CEO Laurence Fink sold 20,858 shares of BLK stock over July 24-25, 2025, for approximately $30.2 million at prices near $1,125 per share — his largest sale window since selling $44M in August 2022.
- News
LendingTree Founder Douglas Lebda Holds Just 7,500 Shares While TREE Sits Near Multi-Year Lows
Douglas Lebda, who founded LendingTree and sold $272.8M in career insider transactions, now holds only 7,500 directly-held shares worth roughly $257K as TREE trades near $34 — a fraction of the $70+ levels where his RSUs vested months earlier.
- News
iHeartMedia CEO Robert Pittman Has Bought $6.3M in IHRT Stock Per Form 4 — Most Recently in March 2026
Robert Pittman, Chairman and CEO of iHeartMedia, has reported $6.3M in career open-market purchases against just $1.4M in sales. His latest buy in March 2026 continues a pattern of conviction buying.
- News
Tim Cook Has Sold Over $1.2 Billion in Apple Stock Per Form 4 Records — All Compensation-Driven
Apple CEO Tim Cook has reported $1.21B in career Form 4 sales. His latest transactions in late 2025 included both Apple stock sales and a Nike board-related filing.
- News
Jamie Dimon Has Sold $462M in JPMorgan Stock but Also Bought $66M — a Rare Two-Way Insider Record
JPMorgan CEO Jamie Dimon has sold $461.7M in career Form 4 transactions but also bought $65.7M — making him one of the few mega-bank CEOs with significant open-market purchases on record.
- News
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.
- News
Mark 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.
- Research
Legal & 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.
- Research
UBS 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.
- Research
Charles 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.
- Research
Northern 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.
- News
$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.
- News
Michael 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.
- News
Jeff 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.
- News
Phil 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.
- News
Lilly 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.
- News
Martine Rothblatt Sold About $1.5M in United Therapeutics Stock During December 2025 While Exercising Options
United Therapeutics CEO Martine Rothblatt exercised options and sold UTHR shares worth ~$1.5M across December 17-19, 2025 at prices around $505-$511 per share.