William Peterffy

Companies

• Interactive Brokers LLC - ATSBoard member May 21, 2020 to now¹

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• IBInteractive Brokers LLC - ATS IBKR10,126 shares²$871.1K at $86.03Jan 1, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Jan 1, 2026Granted 389 shares at $64.31 of Interactive Brokers LLC - ATS²
• Dec 31, 2025Granted 389 shares at $64.31 of Interactive Brokers LLC - ATS³
• Dec 31, 2024Granted 142 shares at $176.67 of Interactive Brokers LLC - ATS⁴
• Dec 31, 2023Granted 302 shares at $82.90 of Interactive Brokers LLC - ATS⁵
• Dec 31, 2022Granted 346 shares at $72.35 of Interactive Brokers LLC - ATS⁶
• Dec 31, 2021Granted 315 shares at $79.42 of Interactive Brokers LLC - ATS⁷