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%).

History
Ticker
Stock
%
Activity
Share
Change
% change to
Portfolio
Reported
Price*
% difference
Current Price
% of
Portfolio
2024 Q3 (6 results)
MA
MASTERCARD INC - A
+132.19%
+353,000
+3.43%
$493.80
0.55% $491.08
6.03%
AMZN
AMAZONCOM INC
+30.82%
+1,272,860
+4.67%
$186.33
32.04% $246.03
19.83%
MCO
MOODY'S CORP
-1.88%
-20,461
-0.19%
$474.59
4.90% $451.35
9.97%
TDG
TRANSDIGM GROUP INC
-2.33%
-25,000
-0.70%
$1,427.13
13.20% $1,238.74
29.46%
GOOGL
ALPHABET INC-CL A
-16.70%
-668,205
-2.18%
$165.85
122.21% $368.53
10.89%
V
VISA INC-CLASS A SHARES
-37.11%
-660,000
-3.57%
$274.95
17.68% $323.57
6.06%
2024 Q2 (7 results)
FICO
FAIR ISAAC CORP
buy
+34,652
+1.06%
$1,488.66
23.60% $1,137.33
1.06%
MCO
MOODY'S CORP
+35.86%
+286,945
+2.49%
$420.93
7.23% $451.35
9.42%
MSFT
MICROSOFT CORP
+10.30%
+180,630
+1.66%
$446.95
6.77% $416.67
17.80%
AMZN
AMAZONCOM INC
-1.78%
-75,000
-0.30%
$193.25
27.31% $246.03
16.43%
GOOGL
ALPHABET INC-CL A
-6.60%
-283,000
-1.06%
$182.15
102.32% $368.53
15.00%
TDG
TRANSDIGM GROUP INC
-7.19%
-83,134
-2.19%
$1,277.61
3.04% $1,238.74
28.22%
CHTR
CHARTER COMMUNICATIONS INC-A
-98.81%
-498,843
-3.07%
$298.96
55.81% $132.12
0.04%
2024 Q1 (8 results)
MA
MASTERCARD INC - A
-0.73%
-1,961
-0.02%
$481.57
1.97% $491.08
2.76%
MCO
MOODY'S CORP
-1.30%
-10,500
-0.09%
$393.03
14.84% $451.35
6.76%
V
VISA INC-CLASS A SHARES
-2.67%
-48,770
-0.29%
$279.08
15.94% $323.57
10.67%
AMZN
AMAZONCOM INC
-5.19%
-230,174
-0.89%
$180.38
36.40% $246.03
16.30%
TDG
TRANSDIGM GROUP INC
-6.56%
-81,224
-2.15%
$1,231.60
0.58% $1,238.74
30.61%
GOOGL
ALPHABET INC-CL A
-11.83%
-574,720
-1.86%
$150.93
144.17% $368.53
13.90%
MSFT
MICROSOFT CORP
-11.88%
-236,528
-2.14%
$420.72
0.96% $416.67
15.86%
CHTR
CHARTER COMMUNICATIONS INC-A
-12.01%
-68,892
-0.43%
$290.63
54.54% $132.12
3.15%
2023 Q4 (8 results)
MCO
MOODY'S CORP
+135.35%
+466,201
+4.06%
$390.56
15.56% $451.35
7.06%
CHTR
CHARTER COMMUNICATIONS INC-A
+15.28%
+76,058
+0.66%
$388.68
66.01% $132.12
4.97%
AMZN
AMAZONCOM INC
-3.60%
-165,600
-0.56%
$151.94
61.93% $246.03
15.03%
MA
MASTERCARD INC - A
-4.09%
-11,457
-0.11%
$426.51
15.14% $491.08
2.56%
TDG
TRANSDIGM GROUP INC
-5.53%
-72,464
-1.64%
$1,011.60
22.45% $1,238.74
27.93%
GOOGL
ALPHABET INC-CL A
-7.59%
-399,392
-1.24%
$139.69
163.82% $368.53
15.14%
MSFT
MICROSOFT CORP
-9.98%
-220,798
-1.85%
$376.04
10.80% $416.67
16.70%
V
VISA INC-CLASS A SHARES
-12.07%
-250,867
-1.46%
$260.35
24.28% $323.57
10.61%
2023 Q3 (8 results)
MCO
MOODY'S CORP
+31.70%
+82,900
+0.66%
$316.17
42.76% $451.35
2.73%
CHTR
CHARTER COMMUNICATIONS INC-A
+24.59%
+98,237
+1.08%
$439.82
69.96% $132.12
5.48%
V
VISA INC-CLASS A SHARES
+4.88%
+96,744
+0.56%
$230.01
40.68% $323.57
11.97%
MSFT
MICROSOFT CORP
-2.66%
-60,529
-0.48%
$315.75
31.96% $416.67
17.49%
TDG
TRANSDIGM GROUP INC
-3.49%
-47,405
-1.00%
$843.13
46.92% $1,238.74
27.67%
MA
MASTERCARD INC - A
-4.77%
-14,059
-0.14%
$395.91
24.04% $491.08
2.78%
GOOGL
ALPHABET INC-CL A
-8.32%
-477,378
-1.56%
$130.86
181.62% $368.53
17.24%
AMZN
AMAZONCOM INC
-9.92%
-506,547
-1.61%
$127.12
93.54% $246.03
14.65%
2023 Q2 (5 results)
V
VISA INC-CLASS A SHARES
+20.21%
+333,152
+1.90%
$237.48
36.25% $323.57
11.30%
TDG
TRANSDIGM GROUP INC
-1.85%
-25,633
-0.55%
$894.17
38.54% $1,238.74
29.15%
MSFT
MICROSOFT CORP
-2.57%
-59,888
-0.49%
$340.54
22.36% $416.67
18.58%
GOOGL
ALPHABET INC-CL A
-8.69%
-545,817
-1.57%
$119.70
207.88% $368.53
16.49%
AMZN
AMAZONCOM INC
-12.93%
-758,170
-2.37%
$130.36
88.73% $246.03
15.99%
2023 Q1 (7 results)
CHTR
CHARTER COMMUNICATIONS INC-A
+19.43%
+65,000
+0.64%
$357.61
63.05% $132.12
3.91%
AMZN
AMAZONCOM INC
+3.91%
+220,581
+0.62%
$103.29
138.19% $246.03
16.59%
V
VISA INC-CLASS A SHARES
-1.55%
-26,000
-0.16%
$225.46
43.52% $323.57
10.18%
TDG
TRANSDIGM GROUP INC
-1.89%
-26,600
-0.54%
$737.05
68.07% $1,238.74
27.92%
MA
MASTERCARD INC - A
-2.16%
-6,500
-0.06%
$363.41
35.13% $491.08
2.93%
GOOGL
ALPHABET INC-CL A
-2.30%
-148,000
-0.42%
$103.73
255.28% $368.53
17.85%
MSFT
MICROSOFT CORP
-8.91%
-228,200
-1.80%
$288.30
44.53% $416.67
18.42%
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.