# One investor made 59% of all S&P 500 insider stock purchases in the last 12 months

Published 2026-11-07 · By Pushbuild · Data: [SEC Form 4 Insider Trades](https://pushbuild.com/apis/sec-insider-trades.html)

**59%**One investor made · as of 2026-11-07

**Cascade Investment, L.L.C. bought $1.58 billion of Republic Services stock on the open market across 108 trades, 59% of the $2.68 billion that S&P 500 insiders spent buying their own companies' shares.** Berkshire Hathaway's $382.9 million of Lennar was a distant second.

“Section 16 of the Securities Exchange Act of 1934 requires senior executives, directors, and 10%+ shareholders (“insiders”) to make initial and ongoing filings about their company stock holdings”

— [SEC Insider Transactions Data Sets](https://www.sec.gov/data-research/sec-markets-data/insider-transactions-data-sets)

| Company | Open-market insider purchases | Trades | Buyers | Largest buyer |
| --- | --- | --- | --- | --- |
| Republic Services (RSG) | $1.58B | 108 | 2 | CASCADE INVESTMENT, L.L.C. |
| Lennar (LEN) | $382.9M | 29 | 1 | BERKSHIRE HATHAWAY INC |
| MGM Resorts (MGM) | $128.8M | 6 | 2 | IAC Inc. |
| Robinhood Markets (HOOD) | $55.3M | 3 | 1 | Malka Meyer |
| KKR & Co. (KKR) | $50.9M | 13 | 5 | NUTTALL SCOTT C |
| Rollins, Inc. (ROL) | $50.0M | 1 | 1 | R. Randall Rollins Voting Trust U/A dated August 25, 1994 |
| International Flavors & Fragrances (IFF) | $32.5M | 13 | 4 | FRIBOURG PAUL J |
| Norwegian Cruise Line Holdings (NCLH) | $30.9M | 17 | 13 | PAGLIUCA STEPHEN G |
| Salesforce (CRM) | $27.5M | 6 | 3 | Morfit G Mason |
| Nasdaq, Inc. (NDAQ) | $21.7M | 3 | 2 | INVESTOR AB |

Insiders at 163 S&P 500 companies bought stock at all. Officers and directors, as opposed to 10% owners, accounted for $568.9 million of the total.

## Caveats

Form 4 filings dated November 1, 2025 to November 6, 2026, transaction code P (open-market or private purchase) in common stock only, for current S&P 500 members. Duplicate rows from joint filers are counted once (same company, date, shares and price). "Insider" is the SEC's Section 16 definition: officers, directors and holders of more than 10% of a class of stock.

## Sources

- [SEC Insider Transactions Data Sets](https://www.sec.gov/data-research/sec-markets-data/insider-transactions-data-sets), read through the Pushbuild [SEC Form 4 Insider Trades API](https://pushbuild.com/apis/sec-insider-trades.html) on 2026-11-07

Data as of 2026-11-07. Every figure in this post is in the table above and the CSV below.

Download the data behind this post: [b6-sp500-insider-purchases-12m.csv](https://pushbuild.com/apis/analysis/data/b6-sp500-insider-purchases-12m.csv)

## Get this data

Every number in this post comes from the [SEC Form 4 Insider Trades](https://pushbuild.com/apis/sec-insider-trades.html). $0.0006 per row returned; every key gets $1 of free usage each month.

```
curl -X POST https://api.pushbuild.com/sec-insider-trades/run \
  -H "X-API-Key: YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"companies": ["GME"], "maxItems": 20}'
```

[API docs and key](https://pushbuild.com/apis/sec-insider-trades.html)[More analysis from this data](https://pushbuild.com/apis/analysis/api/sec-insider-trades/)Embed this chart

Free to reuse with the credit link. Paste this HTML into your page, or use the [SVG file](https://pushbuild.com/apis/analysis/sp500-insider-buying-cascade-republic-services/chart.svg).

Want a table like this in Google Sheets, refreshed on demand? Free script: [copy a web table into Google Sheets](https://pushbuild.com/free/scripts/website-table-to-sheets/).

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Header photo: [Unknown author](https://commons.wikimedia.org/wiki/File:Model_of_Edison_laboratory_at_Menlo_Park._(9ef4c2cfa2be4a518ae18ad6f88206e6).jpg), Public domain, via Wikimedia Commons.

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As of 2026-11-07. Source: https://pushbuild.com/apis/analysis/sp500-insider-buying-cascade-republic-services/