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%).

2015 Q3 (8 results)
9999826D
buy
+46,045
+0.38%
$34.25
-
0.38%
LBTYK
+63.92%
+676,170
+6.61%
$41.02
72.38% $11.33
16.95%
MCO
+57.31%
+267,595
+6.26%
$98.20
359.62% $451.35
17.19%
9876540D
+56.11%
+180,146
+7.55%
$175.85
-
21.01%
TDG
+42.95%
+186,242
+9.43%
$212.41
483.18% $1,238.74
31.38%
MA
+2.10%
+8,300
+0.18%
$90.12
444.91% $491.08
8.67%
V
-10.59%
-29,660
-0.49%
$69.66
364.50% $323.57
4.16%
IBKR
-17.82%
-23,600
-0.06%
$9.87
755.03% $84.40
0.26%
2015 Q2 (7 results)
IBKR
buy
+132,404
+0.44%
$10.39
712.13% $84.40
0.44%
9876540D
+312.44%
+243,235
+13.29%
$171.25
-
17.54%
TDG
+87.11%
+201,871
+14.47%
$224.67
451.36% $1,238.74
31.07%
LBTYK
+31.67%
+254,400
+4.11%
$50.63
77.62% $11.33
17.08%
MA
+26.85%
+83,700
+2.50%
$93.48
425.33% $491.08
11.79%
MCO
+8.03%
+34,699
+1.19%
$107.96
318.07% $451.35
16.08%
V
-18.84%
-65,000
-1.39%
$67.15
381.86% $323.57
6.00%
2015 Q1 (7 results)
9876540D
buy
+77,850
+7.51%
$193.12
-
7.51%
MCO
+98.80%
+214,800
+11.14%
$103.80
334.83% $451.35
22.42%
LBTYK
+69.24%
+328,687
+8.18%
$49.81
77.25% $11.33
20.00%
TDG
+49.44%
+76,666
+8.38%
$218.72
466.36% $1,238.74
25.33%
V
+32.02%
+83,700
+2.74%
$65.41
394.69% $323.57
11.28%
MA
+20.02%
+52,000
+2.25%
$86.39
468.44% $491.08
13.46%
DPZ
-100.00%
-76,498
-3.60%
$94.17
233.42% $313.99
0.00%
22 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.