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Big Insider Buying Puts These 2 Stocks on the Radar

The month’s largest open-market purchases

Last updated: October 7, 2026, 11:31 AM ET· 3 updates since first published

Size is the crudest signal in the filing record and also the hardest to fake. A seven-figure open-market purchase is money the buyer cannot get back on a whim, disclosed under a rule that makes hiding it a federal matter.

The data
TickerPriceInsidersBoughtvs paid %
LEN,LEN.B$79.741$595.3 million+0.5%
RSG$214.741$288.9 million-3.3%
Open-market purchases only (Form 4 code P).Source: SEC Form 4 filings · InsiderBuying.com

Latest updates

  1. October 7, 2026, 11:31 AM ET

    This list has been rebuilt on the latest data. LEN,LEN.B tops the radar at $595.3 million.

    The data
    TickerPriceInsidersBoughtvs paid %
    LEN,LEN.B$79.741$595.3 million+0.5%
    RSG$214.741$288.9 million-3.3%
    Open-market purchases only (Form 4 code P).Source: SEC Form 4 filings · InsiderBuying.com
  2. October 7, 2026, 11:00 AM ET

    The screen was rerun and the list changed. LEN,LEN.B tops the radar at $595.3 million.

  3. October 7, 2026, 10:26 AM ET

    Refreshed: LEN,LEN.B tops the radar at $595.3 million.

LENNAR CORP /NEW/ (LEN,LEN.B)

Form 4 filings record 1 insider buying $595.3 million of stock across 45 purchases, the most recent on October 2nd, 2026.

They paid an average of $79.35 a share, against a current 79.74 — +0.5% on what they paid. The largest single buyer on the filings is BERKSHIRE HATHAWAY INC.

Insider purchases are one of the few signals that cost the buyer money to send. It is not a forecast, and a purchase can be wrong; what it establishes is that someone with a statutory duty to disclose chose to take the position anyway.

At a glance
Insiders buying
1
Committed
$595.3 million
Avg paid
$79.35
Price now
$79.74
Source: SEC Form 4 filings · InsiderBuying.com

REPUBLIC SERVICES, INC. (RSG)

According to the filings, 1 insider buying $288.9 million of stock across 14 purchases, the most recent on September 11th, 2026.

They paid an average of $221.95 a share, against a current 214.74 — -3.3% on what they paid. The largest single buyer on the filings is CASCADE INVESTMENT, L.L.C..

Insider purchases are one of the few signals that cost the buyer money to send. It is not a forecast, and a purchase can be wrong; what it establishes is that someone with a statutory duty to disclose chose to take the position anyway.

At a glance
Insiders buying
1
Committed
$288.9 million
Avg paid
$221.95
Price now
$214.74
Source: SEC Form 4 filings · InsiderBuying.com
Previous picks & how they've done
October 7, 2026
  • LEN,LEN.B —
  • RSG —
October 7, 2026
  • LEN,LEN.B +0.0%
  • RSG +0.0%
October 7, 2026
  • LEN,LEN.B —
  • RSG —
Every prior version of this list, with what each name has done since it appeared.Source: Source: InsiderBuying.com published list history

The bottom line

A large purchase puts a name on the radar. What it is worth depends on everything the filing does not say. Not investment advice. Summarized from public SEC Form 4 and congressional disclosure data.

Large Insider Buys This Month — Form 4 Filings | InsiderBuying