John Steinhardt - Net Worth and Insider Trading
John Steinhardt Net Worth
The estimated net worth of John Steinhardt is at least $5 Million dollars as of 2025-04-29. John Steinhardt is the Director of MarketAxess Holdings Inc and owns about 21,712 shares of MarketAxess Holdings Inc (MKTX) stock worth over $5 Million. Details can be seen in John Steinhardt's Latest Holdings Summary section.
Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the final shares held after open market or private purchases and sales of common stock with a transaction code of "P" or "S" on Form 4, assuming that John Steinhardt has not made any transactions after 2019-02-05 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

Transaction Summary of John Steinhardt
John Steinhardt Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, John Steinhardt owns 1 companies in total, including MarketAxess Holdings Inc (MKTX) .
Click here to see the complete history of John Steinhardt’s form 4 insider trades.
Insider Ownership Summary of John Steinhardt
Ticker | Company | Transaction Date | Type of Owner |
---|---|---|---|
MKTX | MarketAxess Holdings Inc | 2019-02-05 | director |
John Steinhardt Latest Holdings Summary
John Steinhardt currently owns a total of 1 stock. John Steinhardt owns 21,712 shares of MarketAxess Holdings Inc (MKTX) as of February 5, 2019, with a value of $5 Million.
Latest Holdings of John Steinhardt
Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
---|---|---|---|---|---|
MKTX | MarketAxess Holdings Inc | 2019-02-05 | 21,712 | 218.63 | 4,746,895 |
Holding Weightings of John Steinhardt
John Steinhardt Form 4 Trading Tracker
According to the SEC Form 4 filings, John Steinhardt has made a total of 0 transactions in MarketAxess Holdings Inc (MKTX) over the past 5 years. The most-recent trade in MarketAxess Holdings Inc is the sale of 3,187 shares on February 5, 2019, which brought John Steinhardt around $687,181.
Insider Trading History of John Steinhardt
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John Steinhardt Trading Performance
John Steinhardt Ownership Network
Ownership Network List of John Steinhardt
Ownership Network Relation of John Steinhardt

John Steinhardt Owned Company Details
What does MarketAxess Holdings Inc do?
Who are the key executives at MarketAxess Holdings Inc?
John Steinhardt is the director of MarketAxess Holdings Inc. Other key executives at MarketAxess Holdings Inc include General Counsel Scott Pintoff , director & Chairman and CEO Richard M Mcvey , and Global Head of Sales Kevin M Mcpherson .
MarketAxess Holdings Inc (MKTX) Insider Trades Summary
Over the past 18 months, John Steinhardt made no insider transaction in MarketAxess Holdings Inc (MKTX). Other recent insider transactions involving MarketAxess Holdings Inc (MKTX) include a net sale of 5,632 shares made by Kevin M Mcpherson , a net sale of 1,500 shares made by Stephen P Casper , and a net sale of 1,200 shares made by Scott Pintoff .
In summary, during the past 3 months, insiders sold 0 shares of MarketAxess Holdings Inc (MKTX) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 58,949 shares of MarketAxess Holdings Inc (MKTX) were sold and 0 shares were bought by its insiders, resulting in a net sale of 58,949 shares.
MarketAxess Holdings Inc (MKTX)'s detailed insider trading history can be found in Insider Trading Tracker table.
MarketAxess Holdings Inc Insider Transactions
John Steinhardt Mailing Address
Above is the net worth, insider trading, and ownership report for John Steinhardt. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, John Steinhardt's mailing address is: New York Ny 10017.