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
$1.0M in FFIV Stock Sold by CEO François Locoh-Donou as F5 Pushes Its AI Security Platform
F5 CEO François Locoh-Donou disclosed a fresh March sale after the company raised FY2026 expectations and expanded its AI-era application security platform.
- News
Okta Co-Founder Todd McKinnon Sold $1.0M in Class A Shares — But Form 4 Still Shows a 6.38M Derivative Stake
Todd McKinnon's latest Okta sales came days after the company's FY2026 results, but Form 4 Table II still reports 6,383,887 derivative/indirect shares.
- News
Two Wayfair Co-Founders Sold Nearly $17M on the Same Days. Coincidence or 10b5-1 Cadence?
Wayfair co-founders Niraj Shah and Steven Conine executed near-identical stock sales on March 23-24, totaling about $8.4M each, after similar December waves.
- News
TMUS: CEO G. Michael Sievert Keeps a Quarterly Selling Cadence as Blocks Drop to 15,000 Shares
T-Mobile CEO G. Michael Sievert has continued a repeatable two-day selling cadence in TMUS, with block size stepping down from 22,500 shares in 2025 windows to 15,000 shares in February 2026.
- News
$10M PANW Insider Buy by CEO Nikesh Arora — A Rare Open-Market Reversal After September's $72.6M Sales
Palo Alto Networks CEO Nikesh Arora bought nearly $10.0M of PANW in the open market on March 27, a rare insider buy after heavy September selling at much higher prices.
- News
AvePoint Executives Logged March Tax Sales After Stock Grants, Not Open-Market Selling
AvePoint executives Brian Brown, Tianyi Jiang, and Xunkai Gong reported about $278K of March 2026 code F dispositions after grants and vesting activity, a pattern that looks mechanical rather than bearish.
- News
Two ConnectOne Bancorp Executives Logged March Tax Sales After Equity Vesting
ConnectOne Bancorp insiders Frank Sorrentino III and Laura Criscione reported roughly $623K of code F dispositions on March 20 and March 23, 2026, a pattern that reads as tax settlement rather than open-market selling.
- News
Outset Medical CEO Leslie Trigg Kept Selling Small Lots Into a 2026 Margin-Rebuild Story
Outset Medical CEO Leslie Trigg continued a small-lot selling pattern into early 2026 even as the company pointed to better margins and a stronger cash runway.
- News
KYN Chairman Jim Baker Bought Another 25,000 Shares as Energy Infrastructure Stayed in Focus
Jim Baker added 25,000 more KYN shares in March 2026, extending a steady run of open-market purchases in Kayne Anderson Energy Infrastructure Fund.
- News
Three AMETEK Executives Logged Same-Week Tax Sales After Fresh Stock Awards
AMETEK insiders David Zapico, John Hardin, and Tony Ciampitti all reported March 2026 code F tax withholdings after new equity awards, a compensation event that reads differently from open-market selling.
- Research
ARK Invest's $15B Q4 Filing: Tesla at 8.7%, NVIDIA at 1.6%, and the Conviction Gap That Defines Cathie Wood
ARK's Q4 2025 13F reveals a $15.07B portfolio where Tesla commands 8.7% and NVIDIA sits at just 1.6%. After an AUM trough of $7.09B in Q1 2025, the fund has doubled back to $15B — and the innovation thesis hasn't budged.
- Research
Optiver's $268.81B 13F Prints a 61.58% Top-5 Cluster — Why WhaleScore 81 Matters for a Market Maker
Optiver Holding B.V.’s Q4 2025 filing shows $268.81B in 13F AUM and a 61.58% top-5 concentration anchored by index-linked exposure, offering a high-conviction read on market-making inventory structure.
- Research
Raymond James' $321.41B Q4 Build: ETF Core, Mega-Cap Overlay, Relentless Scale
Raymond James reported $321.41B in Q4 2025, with VOO and AGG as the top anchors and a broad mega-cap equity layer pushing AUM to a new cycle high.
- Research
CPPIB's $149.52B Q4 Portfolio: Big Tech at Scale Without a Concentration Trap
Canada Pension Plan Investment Board closed Q4 2025 at $149.52B with a top-5 concentration of just 20.1%, pairing mega-cap tech exposure with unusually broad diversification.
- Research
PNC's $166.63B Q4 Filing Is Really an Eli Lilly Story: One Stock at 33.57%
PNC Financial Services reported $166.63B in Q4 2025, but the dominant signal is a $54.94B Eli Lilly stake at 33.57% weight. The filing combines steady AUM expansion with unusually high single-name concentration.
- Research
Deutsche Bank’s $307.09B Q4 2025 Build: A Relentless Mega-Cap Engine Led by NVDA and MSFT
Deutsche Bank AG reached $307.09B in Q4 2025 13F assets, with NVDA and MSFT at the top of a broad mega-cap stack and a three-quarter acceleration in AUM.
- Research
Baillie Gifford's $120.34B Q4 Reset: Growth Conviction Stayed, AUM Fell 10.9%
Baillie Gifford closed Q4 2025 at $120.34B after a -10.9% QoQ AUM move, while top holdings remained concentrated in global growth names like NVDA, MELI, and AMZN.
- Research
Marshall Wace’s $109.85B Q4 2025 Surprise: A 22.13% IVV Position Towers Over Mega-Cap Bets
Marshall Wace ended Q4 2025 at $109.85B with a 22.13% IVV position, while NVDA, AMZN, AAPL, and MSFT sit far smaller, reshaping how to read the fund’s risk posture.
- Research
D. E. Shaw's $182.42B Q4 Pivot: A Quant Giant Scaling Risk, Not Concentration
D. E. Shaw reported $182.42B in Q4 2025 with 5,839 holdings and only 18.8% in its top 10 positions, signaling breadth-first scaling.
- Research
Janus Henderson's $223B Q4 2025 13F: Apple at #5 Is Their Loudest Active Call
Janus Henderson demoted Apple to fifth place behind NVIDIA, Microsoft, Amazon, and Alphabet — a 2.9% underweight versus passive benchmarks that reveals the firm's biggest active conviction.