Mark Massey recent buys & sells (2026 Q3)
AltaRock Partners
AltaRock Partners Portfolio Changes
Purchase & sale details
- Portfolio value:
- $4.21B (-$26M)
- Previous value:
- $4.24B
- # of changes:
- 7
- New positions:
- 0
- Reported for:
- 30 Sep 2026 (Q3)
- Latest filing date:
- 13 Nov 2026
AltaRock Partners has disclosed a total of 7 changes to the portfolio in the latest (2026 Q3) SEC report(s): increased the number of shares of 1 and decreased the number of shares of 6 position(s).
What stocks is Mark Massey buying now?
In the recent quarter Mark Massey has bought (MSFT) Microsoft Corp (added shares +13.13%).
In the latest report(s) the following changes have been made to the top investments: (MSFT) Microsoft Corp (added shares +13.13%), (AMZN) Amazon.com Inc (reduced shares -15.79%), (TDG) Transdigm Group Incorporated (reduced shares -3.71%), (MA) Mastercard Inc (reduced shares -7.91%) and (V) Visa Inc, CL-A (reduced shares -7.98%).
7 results
| History | Ticker | Name |
% or activity |
Shares change |
Shares held after* |
% change to portfolio |
Reported price* |
% difference current price* |
% of portfolio |
Held since* | Held for* |
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
Microsoft Corp
|
+13.13%
|
+306,540
|
2,641,022
|
+3.73%
|
$512.90
|
+2.24%($524.40)
|
32.15%
|
2021 Q2
|
~5.50 years
|
|
|
|
Transdigm Group Incorporated
|
-3.71%
|
-32,499
|
843,256
|
-0.83%
|
$1,082.60
|
+13.13%($1,224.72)
|
21.67%
|
2014 Q4
|
~12.00 years
|
|
|
|
Alphabet Inc, CL-A
|
-5.48%
|
-2,300
|
39,694
|
-0.02%
|
$344.08
|
-14.02%($295.85)
|
0.32%
|
2019 Q4
|
~7.00 years
|
|
|
|
Mastercard Inc
|
-7.91%
|
-60,481
|
704,026
|
-0.79%
|
$551.47
|
+19.79%($660.59)
|
9.21%
|
2014 Q4
|
~12.00 years
|
|
|
|
Visa Inc, CL-A
|
-7.98%
|
-66,758
|
769,712
|
-0.57%
|
$359.33
|
+18.66%($426.37)
|
6.56%
|
2014 Q4
|
~12.00 years
|
|
|
|
Amazon.com Inc
|
-15.79%
|
-905,000
|
4,824,972
|
-5.32%
|
$249.15
|
+6.72%($265.90)
|
28.53%
|
2022 Q1
|
~4.75 years
|
|
|
|
Moodys Corp
|
-56.06%
|
-169,655
|
132,969
|
-1.82%
|
$454.13
|
+12.57%($511.21)
|
1.43%
|
2014 Q4
|
~12.00 years
|
|
Insights | News
Insight
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Consensus shift · 2026 Q3
Insight
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Consensus shift · 2026 Q3
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Outsized position · 2026 Q3
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Outsized position · 2026 Q3
* Shares, change to shares, sold shares, shares held after: split-adjusted.
* Reported price: this doesn't represent the actual buy or sell price. It is the split-adjusted price of the security as of the last day of the reported period.
* Current price: this can be a delayed price and may not reflect the real-time market value, however it is too close.
* Value or Price: If the security is completely sold out, we show the reported value (or price) prior to the actual period.
* Held since / Held for: calculated since the latest "new buy" position. If the security was previously exited and re-entered, only the most recent holding period is counted. 2013 Q2 is the earliest period we have data for, so "2013 Q2*" means "2013 Q2 or earlier".