13F Insight
Alex Rivera

Alex Rivera

Breaking News Editor

Breaking News Editor at 13F Insight. First to report on major SEC filings, institutional moves, and regulatory developments.

SEC filings news13D/G activist filingsForm 4 insider transactionsMarket-moving regulatory eventsReal-time institutional flowsInsider trading patterns

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 (677)