Insider Selling Is Near a Record. So Is Insider Buying. That's the Point.

Insider Selling Is Near a Record. So Is Insider Buying. That's the Point.

Here is the thing about the insider-trading mailbox in 2026: it produced two record-setting headlines that pointed in opposite directions, from the same forms, over the same six months. Corporate insiders sold $77.6 billion of their own stock in the first half of the year, up about 20 percent from a year earlier — the second-fastest selling pace in more than two decades, a statistic reported as "a classic red flag," because no one knows a company's prospects like the people inside it. At the same time, a record number of technology insiders bought their own stock on the open market: 28 executives inside the biggest technology ETF, double the count from the start of the year. Selling near the fastest pace on record, buying at a record pace. A prophecy machine that emits two contradictory headlines at once is not a prophecy machine. The filing system is the story.

The computer sold.

The cleanest single exhibit is Jeff Bezos. On the first Monday of August, Amazon's shares closed at a record high and the company's market value passed $3 trillion, on the back of a blowout second-quarter earnings report. The next morning the disclosure landed: Bezos, through Morgan Stanley, had filed a Form 144 to sell up to 15 million Amazon shares — about $4.1 billion — and the stock fell more than 2 percent. Jim Cramer called it a buzzkill. You can feel the market reading the tea: the founder is selling a fortune on the very day his company touches its largest value ever, so he must be telling us something.

Except the form explained the mechanism. The proposed sale sat inside a prearranged trading plan he adopted on November 14, 2025 — eight and a half months earlier, before the earnings report, before the $3 trillion crossing. A trade that was decided in November, by a schedule, cannot react to August's news, cannot size itself to August's valuation, cannot be quoting August's Bezos. The market read it as a quote anyway.

What the forms are for.

The question you actually want to answer first is: what sort of machine produces filings like that? It is a compliance machine. The regime that makes insiders confess their every trade — Form 4 and Form 144 in the United States; the dealings-notification rules that require "persons discharging managerial responsibilities" in Europe and the U.K. to file whenever they so much as touch their own shares — was built to catch people trading quietly on secrets. Its job is anti-cheating. But the law flips the incentive: since you may not trade on what you know, the prudent way to sell a giant position is to take the judgment out of the trade in advance — pre-arrange a plan, run it on a schedule, and pocket the affirmative defense. Rule 10b5-1 exists, at bottom, to let an insider say: "Officer, this sale isn't me, it's a computer." The trades that actually happen at scale are therefore, disproportionately, the trades engineered to contain no judgment at all — and then, by law, each one is filed and marketed to the rest of us as a knowing act.

Also, most insider selling was never a market opinion to begin with. It is compensation logistics. Executives are paid in stock, and a grant is only useful once you sell it. They sell to pay the tax on the grant, which produces the forms' strangest entries: when Nvidia's Jensen Huang "disposed of" roughly $80 million of stock in March, he did not decide to sell a single share — the company withheld 437,908 shares to cover his tax bill, and the data services log that as a disposition all the same. They sell to diversify, because the sensible move when your employer pays you in one enormous pile of your own company's shares is to turn a slice of that pile into something else. They give shares away (Bezos donated 220,200 Amazon shares to nonprofits in May). And they sell on schedules, because the 10b5-1 plan has become the preferred approach to executive trading, with adoption rising every year.

Read the aggregates in that light and the red flag dissolves into an accounting artifact of a long bull market. In March, one data shop put the aggregate insider buy/sell ratio at 0.24 — roughly four dollars sold for every dollar bought, the lowest in five years, against a historical median around 0.34. For the first half, buying came to about $6.9 billion against nearly $78 billion of selling. That asymmetry is not a mood. When the market sits at records, executives hold more shares worth more money, and the scheduled, tax-driven, diversification selling is bigger in dollar terms. The record pace of insider selling is largely a function of the record high of the stock market running through a compensation system denominated in shares. It's rent, not revelation.

To be fair, the red-flag reading is not pure superstition. Insiders choose when to adopt their plans and how much stock to put into them, so even a scheduled sale encodes something of a view at the moment of adoption — with the result that the SEC, in December 2022, added cooling-off periods and extra disclosure to the 10b5-1 rule, on the theory that the old version could be gamed. And the empirical literature is not symmetrical: researchers treat insider buying as the informative trade, the one that is rare and hard to fake, since nobody pre-arranges a purchase the way they pre-arrange a sale, while raw selling is read as weak, noisy evidence. Note what that does to the two 2026 records. The selling record is the plumbing. The buying record — the 28 tech executives, small change in dollars next to the billions going out — is the part that might actually mean something, and it is the record the market watches least.

Attention is the product.

Which brings you to the part of the machine that was always designed to profit from the confusion. A whole subscription industry — near-real-time insider alerts, dashboards, rankings — sits on top of filings you can download for free from a government database; it was an analytics shop, after all, that anointed the record in tech-insider buying. And here is the research detail that should make you uncomfortable about your own attention: a study covering three decades of insider trades found that insiders are more likely to sell, and to sell more, precisely when retail attention to a stock is hot — when the ticker is trending, when everyone is staring at the dashboard — and more likely to buy when attention has collapsed. Attention-driven buying pushes prices up temporarily; insiders sell into that; the trades earn abnormal returns. The retail investor refresh-looping the insider feed is, in that world, part of the liquidity that makes the insider's trade profitable. You are not reading the secret. You are the machine the secret runs on.

The whole arrangement works as designed, which is the quiet absurdity. A set of checks built to catch people trading on hidden information has become, for much of the market, a hotline to hidden information — one that mostly relays the things insiders were required to file, in the order required. The filings do contain real information, if you know where to look: open-market purchases; sales that were not pre-arranged; closed-period trades, like the director fined €60,000 for dealing while the dealing was banned. Those are judgment, and they are worth reading as judgment. The scheduled billions are a clock. A clock sells no matter what it thinks of the price, and it tells you the same answer it told you in November.