Mark Massey's AltaRock Partners reduced its Moodys Corp (MCO) position by 65% in 2026 Q2, according to the 13F-HR filed with the SEC on August 17, 2026. The stake went from 862K to 303K shares, worth about $137.1M, and from 9.11% to 3.23% of the reported portfolio.
What did the 2026 Q2 filing report for MCO?
As of June 30, 2026, from the 13F-HR filed August 17, 2026.
| Before | After | |
|---|---|---|
| Shares | 862K | 303K |
| Shares sold | -559K (65%) | |
| Reported value | $376.1M | $137.1M |
| Portfolio weight | 9.11% | 3.23% |
| Rank in portfolio | 6th of 8 |
How much did Mark Massey cut MCO?
Mark Massey sold 559K shares of MCO during 2026 Q2, cutting the stake from 862K to 303K. The reported value of the position fell by about $239M, from about $376.1M to about $137.1M.
Where does MCO sit in the Mark Massey portfolio?
MCO ranks 6th of 8 stock positions in the Mark Massey portfolio at 3.23%, below the fund's average stock position of 12%. The MCO cut was the 2nd largest of the quarter's 8 position changes by percent change to portfolio. The largest stock position is AMZN at 32.21%. Next come TDG at 27.51% and MSFT at 20.54%. The three largest stocks together are 80.26% of the book. Across the 2026 Q2 portfolio, Mark Massey reported 8 stock positions, with no position opened or closed. The total portfolio value is about $4.2B, up 3% from the prior quarter.
How long has Mark Massey held MCO?
Mark Massey first reported MCO in the quarter ended December 31, 2014. The weight peaked at 22.42% in 2015 Q1. Last quarter the fund had added to it by 6%. Every reported trade is on the Mark Massey MCO trade history page.
Did other funds buy or sell MCO in 2026 Q2?
Among the other tracked funds that had filed for 2026 Q2 as of August 17, 2026, 12 hold MCO. Of those, 1 added to the position this quarter and 3 trimmed it. The largest buyers of MCO this quarter were John Armitage and Bryan R. Lawrence. The largest sellers were Chuck Akre, Nicolai Tangen and William Von Mueffling. Every tracked holder of MCO is on the MCO ownership page.
FAQ
How many MCO shares did Mark Massey sell in 2026 Q2?
Mark Massey sold 559K shares of MCO, 65% of the position, leaving 303K shares.
What remains of the MCO position of Mark Massey?
Mark Massey still holds 303K shares of MCO, worth about $137.1M at June 30, 2026 prices.
How much of the Mark Massey portfolio is MCO now?
MCO is 3.23% of the Mark Massey portfolio, down from 9.11% a quarter earlier.
Did other funds trim MCO in 2026 Q2?
Among the 12 other tracked funds that hold MCO, 3 trimmed it in 2026 Q2 and 1 added to it.