What stocks have insiders bought the most?

Every row is built from SEC Form 4 filings with transaction code P — an open-market or private purchase paid for with the insider’s own money. Purchases made under a pre-arranged 10b5-1 plan, option exercises, stock awards and dividend reinvestments are excluded, because none of them tells you the insider chose to buy at this price on this day.

Share counts flatter low-priced stocks. Ranking by the dollars actually spent puts a $2 million purchase of a $400 stock and a $2 million purchase of a $4 stock on the same footing, which is the comparison most readers want when they ask “where are insiders putting real money?”

RSG tops the last 30 days table at $561.7M. The largest single buyer was CASCADE INVESTMENT, L.L.C., and the volume-weighted average purchase price was $218.49; the stock has since moved +1.7% from that level. Hover or focus the bar for the full detail card, including the 52-week-low context.

A single large purchase can be an estate-planning move, a director topping up to meet an ownership guideline, or a founder who simply has the cash. Three or more insiders buying in the same window is harder to explain away, which is why the chart marks those rows separately. Historically, cluster buys have been a stronger signal than solo buys — but the word is historically; past patterns are not a forecast.

The badge beside each ticker is the Insider Score (IQS), our 0–100 rating of how meaningful the buying is once we account for who bought, how much relative to their existing stake, the company’s track record after past insider buys, and the market backdrop. Green is 75 or above; gold is 50–74. Companies without enough history carry no badge.

“% since purchase” compares the current price with the volume-weighted average price the insiders paid over the period. A negative figure means the stock is trading below where insiders bought — the market currently disagrees with them. A large positive figure means most of the move has already happened.

It does not show sales, so a company can appear here while other insiders are selling; check the company page for the net picture. It does not know why anyone bought. And the 30- and 90-day windows are calendar windows, so a filing that lands on the boundary can move a company several places from one refresh to the next.

The aggregates are rebuilt every Friday after the close, and the “Updated” date at the top of the page is the timestamp of that rebuild. Form 4 filings themselves arrive intraday on the live insider trades feed.