Stock market today: insider buys and sells, Monday, September 21, 2026
Corporate insiders filed 17 open-market purchases worth $213M and 161 sales worth $252M. The S&P 500 (SPY) rose 1.6% on the day.
Biggest insider buys
- Buy
LEN 10% Owner Berkshire Hathaway Inc bought $93.1M of LEN at $76.39 — largest purchase by this insider in our records.
- Buy
LEN 10% Owner Berkshire Hathaway Inc bought $37.7M of LEN at $77.97.
- Buy
LEN 10% Owner Berkshire Hathaway Inc bought $32.6M of LEN at $79.41 — largest purchase by this insider in our records.
- Buy
LEN 10% Owner Berkshire Hathaway Inc bought $21.0M of LEN at $78.41 — first open-market purchase in our records.
- Buy
LEN 10% Owner Berkshire Hathaway Inc bought $12.4M of LEN at $77.23.
- Buy
LEN 10% Owner Berkshire Hathaway Inc bought $5.4M of LEN at $78.09.
- Buy
LEN 10% Owner Berkshire Hathaway Inc bought $4.0M of LEN at $77.06.
- Buy
LEN 10% Owner Berkshire Hathaway Inc bought $2.5M of LEN at $74.80.
- Buy
LEN 10% Owner Berkshire Hathaway Inc bought $1.4M of LEN at $76.62.
- Buy
CRM Director David Blair Kirk bought $999K of CRM at $239.33 — largest purchase by this insider in our records; raises the stake by 29%.
Biggest insider sales
| Stock | Insider | Value | Plan |
|---|---|---|---|
| SNDKSandisk Corp | David GoeckelerCEO, Chair | $15.1M | 10b5-1 |
| DELLDell Technologies Inc. | David Alan KennedyCFO | $13.5M | — |
| ANETArista Networks, Inc. | Andreas Bechtolsheim10% Owner | $11.6M | 10b5-1 |
| WDAYWorkday, Inc. | David A Duffield10% Owner | $9.2M | 10b5-1 |
| ANETArista Networks, Inc. | Andreas Bechtolsheim10% Owner | $7.8M | 10b5-1 |
| SNDKSandisk Corp | David GoeckelerCEO, Chair | $7.2M | 10b5-1 |
| WDAYWorkday, Inc. | David A Duffield10% Owner | $6.8M | 10b5-1 |
| SNDKSandisk Corp | David GoeckelerCEO, Chair | $6.5M | 10b5-1 |
| ANETArista Networks, Inc. | Andreas Bechtolsheim10% Owner | $6.4M | 10b5-1 |
| CRWDCrowdStrike Holdings, Inc. | Cary DavisDirector | $6.1M | — |
Biggest moves among these stocks
Share-price change on the day, for stocks with insider filings.
Filing dates are when the SEC received each Form 4; trades can be up to two business days earlier. Facts from public filings, not investment advice.