Insider Buying/Selling

Officers, directors and 10%+ owners file a Form 4 within two business days of trading their own company's stock. Open-market-style activity over the trailing 90 days, across the S&P 500.
Loading...
Net Insider $ Flow
…
Buy $ minus sell $, trailing 90 days
Buy $ / Sell $
…
Total dollar volume, both directions
Companies Net Buying
…
Of companies with any activity
Cluster-Buy Signals
…
2+ insiders buying, zero sellers

Net insider $ flow by sector, trailing 90 days

Buy $ minus sell $ across Common Stock transactions, pooled across each sector's constituents.

Cluster buying

Companies with 2+ distinct insiders buying and no insiders selling in the window. The clearest signal in this data.
Symbol Sector Buyers Shares Bought $ Bought
Loading…

Largest individual purchases

Single largest priced open-market-style buys, by dollar value
Date Symbol Executive Title Shares Price Value
Loading…

Largest individual sales

Shown for completeness. Insider selling is common and often reflects diversification, taxes or a pre-scheduled 10b5-1 plan, not a bearish view (see methodology).
Date Symbol Executive Title Shares Price Value
Loading…

All companies with activity

Every S&P 500 name with at least one qualifying transaction in the trailing 90 days.
Show full list
Symbol Sector Buy $▾ Sell $▾ Net $▾ Buys▾ Sells▾ Buyers▾
Loading insider transactions data…

Methodology

Data. The universe is the S&P 500. For each company, Alpha Vantage's INSIDER_TRANSACTIONS endpoint returns each Form 4 line item filed by officers, directors and 10%+ owners: company, filer, security type, transaction date, shares, price, and whether it was an acquisition or disposal. Only transactions in the trailing 90 days as of the last refresh are counted.

What's filtered. Raw Form 4 data is mostly routine equity-compensation activity: RSUs vesting, options being exercised, and the automatic tax-withholding sale after a vest. None of that is a decision to buy or sell. This page keeps only security_type = Common Stock transactions with a positive share price. RSU vesting and stock awards report a blank or zero price, so that removes most of the noise. It is a partial fix. A pre-scheduled 10b5-1 plan sale (automatic periodic sales set up months earlier) reports a normal price and looks the same as a discretionary sale. Be skeptical of the sell side of this data for that reason.

Buys vs. sells. Insider buying doesn't have that problem, because nothing automatic makes an executive spend their own cash on more stock. Research such as Lakonishok & Lee (2001), Are Insider Trades Informative?, finds insider purchases carry more signal than sales. The page reflects that. Cluster buying (2+ distinct insiders buying, no sellers) is the headline signal, the largest individual purchases get their own table, and the largest sales appear only for completeness, with a caveat.

Sector and company name come from Sector Beeswarm. Refreshes weekly (Saturday morning). One company's insider filings are sparse enough that a trailing-90-day total rarely changes day to day.

Source: Alpha Vantage: INSIDER_TRANSACTIONS