Mark Massey

Investor and portfolio manager known for his value investing approach and his focus on identifying undervalued securities with strong growth potential across various sectors.

Explore Mark Massey's largest investments on Profit.com, including companies like Amazon.com Inc, Transdigm Group Incorporated, and Microsoft Corporation, and their significance in his portfolio.

Mark Massey’s portfolio updates are typically published quarterly through SEC 13F filings, which provide detailed information about their holdings, including recent buys and sells. Additionally, real-time updates on insider trades are available through Form 4 filings, offering a more timely view of their trading activity.

Mark Massey currently invests in companies such as Amazon.com Inc, Transdigm Group Incorporated, and Microsoft Corporation, focusing on sectors like Consumer Cyclical and Industrials.

The largest holding in Mark Massey’s portfolio is Amazon.com Inc, accounting for 32.21% of their total investments.

One of Mark Massey’s most profitable investments is Alphabet Inc Class A, which has generated a return of 33.04% over the past year.

As of 18 Sep 2026, Mark Massey’s portfolio is valued at approximately $4.24B, based on the latest filings available on Profit.com.

Yes, you can use Profit.com to follow Mark Massey’s portfolio and gain insights to build your own investment portfolio.

You can follow Mark Massey’s portfolio updates on Profit.com, which provides notifications on the latest portfolio transactions as soon as they’re available.

Stay up-to-date with Mark Massey’s latest trades by following their portfolio on Profit.com. Enable notifications to receive real-time alerts on their newest buy and sell transactions.