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 (662)
- News
BP’s Q1 2026 Profit Spike Came With a Deep Holder Base, Not a Thin Oil Trade
BP’s first-quarter profit more than doubled as oil prices surged, but the more durable signal is how many active institutions were already sitting in the name before the headline hit.
- News
Erasca Sank on a Trial Death Headline, but the Ownership Data Says Specialist Capital Was Already Crowding the Story
Erasca fell sharply on April 28, 2026 after Reuters highlighted a patient death in an early-stage trial. The deeper angle is that specialist biotech holders and multiple recent 13D and 13G filings had already made ERAS a closely watched ownership story.
- News
Balu Balakrishnan’s Power Integrations Sales Were Small, Planned and Timed Around a Restructuring Quarter
Power Integrations director Balu Balakrishnan sold about $1.24M of POWI stock between January 29 and February 10, 2026. The better read is that the sales followed vesting mechanics and arrived alongside a restructuring and earnings reset, not a dramatic ownership exit.
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Oracle Slid on OpenAI Growth Worries, but the Better Test Is Whether Active Holders Still Treat It Like an AI Infrastructure Core
Oracle shares fell on April 28, 2026 after a Reuters report tied the move to worries about OpenAI missing internal targets. The ownership angle is that Oracle still sits inside a deep active-holder base, not just passive benchmark money.
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Jayshree Ullal Sold Arista Shares Days Before Q1 Results, but the More Important Number Is What She Still Owns
Arista CEO Jayshree Ullal sold stock on April 21, 2026, just ahead of the company’s May 5 earnings date. The stronger signal is that she still reported 17.78 million shares after the sale.
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GM Raised 2026 Guidance, but the Bigger Ownership Signal Is How Deep the Active Holder Base Still Runs
GM beat expectations and lifted 2026 guidance on April 28, 2026. The sharper 13F angle is that the stock still sits inside a broad active-holder base, not just passive index ownership.
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Charles Schwab Insider Sales Still Leave Charles Schwab With a Massive Stake, and That Distinction Matters More Than the Tape
Charles Schwab sold stock again in late April 2026, but Form 4 and ownership context show this was not an exit story. He still controls tens of millions of Class A and derivative-linked shares.
- News
Coca-Cola Raised Its 2026 EPS Outlook, but the More Durable Signal Is the Berkshire-Shaped Holder Base Behind It
Coca-Cola reported stronger first-quarter 2026 results on April 28, 2026 and lifted comparable EPS guidance. The deeper angle is how concentrated long-duration ownership still supports the name.
- News
Albertsons’ Washington BOGO Lawsuit Hits a Holder Base With Real Active Ownership
Washington's April 27 lawsuit over allegedly deceptive BOGO promotions is a consumer-risk story, but Albertsons' holder map shows the stock is still backed by more than passive index ownership.
- News
FedEx’s MD-11 Return Plan Lands in a Holder Base Built for Operational Patience
FedEx's plan to bring MD-11 freighters back by May 31 is an operational story, but the ownership base matters because active institutions have stayed in the stock through the reset.
- News
Charles Schwab’s April 27 Sale Still Needs the Table II Cross-Check
Charles Schwab sold shares again on April 27, 2026, but the headline number matters less than what remained in both Class A and indirect holdings after the trade.
- News
Eric Yuan’s April Zoom Sales Need the Ownership Cross-Check
Eric Yuan sold Zoom shares on April 13-14, 2026, but the more important question is what remained once the filing is checked against broader ownership context.
- News
Verizon’s Q1 Beat Hit a Holder Base Deep Enough to Matter
Verizon’s first positive Q1 postpaid phone net adds in 13 years mattered, but the stronger signal is that the quarter landed in a stock with a very deep institutional holder base.
- News
Eli Lilly’s Ajax Deal Lands in One of the Market’s Deepest Healthcare Holder Bases
Lilly’s up-to-$2.3 billion Ajax acquisition adds a new oncology angle, but the ownership signal is that the deal landed inside a remarkably deep institutional holder base.
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AMD's New Ryzen 9 Launch Arrived With a Strong Institutional Holder Map Already in Place
AMD launched the Ryzen 9 9950X3D2 Dual Edition on April 22, 2026. The data angle is that the product news landed in a stock already owned by one of the market’s deepest semiconductor holder bases.
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Martine Rothblatt's April UTHR Sale Needs the Option and Beneficial Ownership Context
Martine Rothblatt sold stock after an April 2026 option exercise, but the filing reads very differently once you separate the exercise-and-sell mechanics from the remaining ownership picture.
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Marc Benioff's Salesforce Filings Still Need the Ownership Check Before You Call Them Selling Pressure
Marc Benioff remains one of the market’s most prolific sellers of CRM stock, but the latest read still requires share-class and beneficial-ownership context before investors overstate the signal.
- News
Domino's Soft Q1 Landed in a Holder Base Still Anchored by Berkshire
Domino’s reported first-quarter 2026 results on April 27 and reset parts of its sales outlook. The ownership data shows the stock still sits in a deep holder base anchored by Berkshire Hathaway.
- News
Meta's Blocked Manus Deal Lands in One of the Market's Deepest Ownership Bases
China ordered Meta to unwind the Manus acquisition on April 27, 2026. The news matters because META sits inside one of the deepest institutional ownership maps in the market, not because one deal defines the thesis.
- News
Verizon’s Q1 Beat Landed In One Of The Deepest Holder Bases In U.S. Telecom
Verizon raised guidance after first-quarter 2026 results, and the ownership data shows why the market reaction matters: few telecom names carry a holder base this deep.