Mark Massey Holdings Activity

AltaRock Partners Portfolio 13F

AltaRock Partners has disclosed a total of 8 changes to the portfolio in the latest (2026 Q1) SEC report(s): increased the number of shares of 2 and decreased the number of shares of 6 position(s).

What stocks is Mark Massey buying now?

In the recent quarter Mark Massey has purchased 2 securities: (AMZN) AMAZONCOM INC (added shares +3.46%) and (MCO) MOODY'S CORP (added shares +5.84%).

What does Mark Massey invest in?

Mark Massey's top 5 holdings (by % of portfolio) are (AMZN) AMAZONCOM INC (38.2%), (TDG) TRANSDIGM GROUP INC (25.54%), (MSFT) MICROSOFT CORP (16.75%), (MCO) MOODY'S CORP (9.11%) and (MA) MASTERCARD INC - A (6.33%).

In the latest report(s) the following changes have been made to the top investments: (AMZN) AMAZONCOM INC (added shares +3.46%), (TDG) TRANSDIGM GROUP INC (reduced shares -6.21%), (MSFT) MICROSOFT CORP (reduced shares -10.32%), (MCO) MOODY'S CORP (added shares +5.84%) and (MA) MASTERCARD INC - A (reduced shares -3.51%).

2022 Q4 (8 results)
AMZN
+71.35%
+2,350,336
+6.20%
$84.00
203.00% $254.52
14.90%
MCO
+3.53%
+8,926
+0.08%
$278.62
63.82% $456.44
2.29%
CHTR
-3.17%
-10,940
-0.12%
$339.10
61.47% $130.66
3.56%
V
-3.46%
-59,981
-0.39%
$207.76
55.07% $322.17
10.93%
TDG
-6.17%
-92,655
-1.83%
$629.65
94.99% $1,227.75
27.90%
GOOGL
-8.18%
-573,183
-1.59%
$88.23
317.32% $368.20
17.83%
MA
-8.27%
-27,153
-0.30%
$347.73
39.38% $484.66
3.29%
MSFT
-9.17%
-258,380
-1.95%
$239.82
79.73% $431.02
19.30%
2022 Q3 (8 results)
MCO
+104.86%
+129,298
+1.03%
$243.11
87.75% $456.44
2.01%
MA
+32.08%
+79,714
+0.74%
$284.34
70.45% $484.66
3.05%
V
+10.57%
+165,703
+0.96%
$177.65
81.35% $322.17
10.09%
AMZN
+7.49%
+229,614
+0.85%
$113.00
125.24% $254.52
12.19%
GOOGL
+3.56%
+241,000
+0.75%
$95.65
284.95% $368.20
21.93%
MSFT
+3.17%
+86,500
+0.66%
$232.90
85.07% $431.02
21.49%
TDG
+3.00%
+43,700
+0.75%
$524.82
133.94% $1,227.75
25.81%
CHTR
-40.71%
-237,146
-2.36%
$303.35
56.93% $130.66
3.43%
2022 Q2 (8 results)
AMZN
+20.41%
+519,500
+1.70%
$106.21
139.64% $254.52
10.04%
V
+4.83%
+72,300
+0.44%
$196.89
63.63% $322.17
9.53%
MSFT
+3.67%
+96,700
+0.77%
$256.83
67.82% $431.02
21.65%
TDG
+2.63%
+37,400
+0.62%
$536.67
128.77% $1,227.75
24.16%
GOOGL
+0.90%
+60,400
+0.20%
$108.96
237.91% $368.20
22.74%
MA
-1.11%
-2,800
-0.03%
$315.48
53.63% $484.66
2.42%
CHTR
-9.05%
-57,997
-0.84%
$468.53
72.11% $130.66
8.42%
META
-100.00%
-108,039
-0.74%
$222.36
186.96% $638.10
0.00%
2022 Q1 (6 results)
AMZN
buy
+2,544,920
+10.58%
$163.00
56.15% $254.52
10.58%
MSFT
+53.20%
+915,133
+7.19%
$308.31
39.80% $431.02
20.72%
GOOGL
+16.21%
+934,680
+3.31%
$139.07
164.76% $368.20
23.76%
TDG
+5.20%
+70,225
+1.17%
$651.54
88.44% $1,227.75
23.61%
CHTR
-52.53%
-708,929
-9.86%
$545.52
76.05% $130.66
8.91%
META
-79.58%
-421,150
-2.39%
$222.36
186.96% $638.10
0.00%
2021 Q4 (6 results)
V
+17,472.26%
+1,487,588
+8.50%
$216.71
48.66% $322.17
8.55%
MA
+42.55%
+75,000
+0.71%
$359.32
34.88% $484.66
2.38%
CHTR
+13.43%
+159,814
+2.75%
$651.97
79.96% $130.66
23.19%
TDG
+1.88%
+24,872
+0.42%
$636.28
92.96% $1,227.75
22.66%
GOOGL
+0.87%
+50,000
+0.19%
$144.85
154.19% $368.20
22.02%
META
-72.67%
-1,406,849
-12.47%
$336.35
89.71% $638.10
4.69%
2021 Q3 (6 results)
MSFT
+108.93%
+896,843
+6.82%
$281.92
52.89% $431.02
13.08%
TDG
+5.57%
+70,000
+1.18%
$624.57
96.58% $1,227.75
22.34%
CHTR
-1.23%
-14,850
-0.29%
$727.56
82.04% $130.66
23.35%
GOOGL
-10.64%
-680,800
-2.45%
$133.68
175.44% $368.20
20.62%
META
-13.38%
-299,144
-2.74%
$339.39
88.01% $638.10
17.72%
MCO
-46.07%
-105,358
-1.01%
$355.11
28.53% $456.44
1.18%
2021 Q2 (4 results)
MSFT
buy
+823,333
+6.17%
$270.90
59.11% $431.02
6.17%
TDG
+31.87%
+303,619
+5.44%
$647.29
89.68% $1,227.75
22.51%
CHTR
+16.70%
+172,374
+3.44%
$721.45
81.89% $130.66
24.05%
META
+2.64%
+57,500
+0.55%
$347.71
83.52% $638.10
21.51%
2021 Q1 (3 results)
META
+27.21%
+465,800
+5.21%
$294.53
116.65% $638.10
24.38%
CHTR
+15.36%
+137,451
+3.22%
$617.02
78.82% $130.66
24.21%
TDG
-7.11%
-72,962
-1.63%
$587.92
108.83% $1,227.75
21.29%
49 of 262

Shares, change to shares, sold shares - 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.

Value or Price - If the security is completely sold out, we show the reported value (or price) prior to the actual period.