Mark Massey Holdings Activity

AltaRock Partners Portfolio 13F

AltaRock Partners has disclosed a total of 7 changes to the portfolio in the latest (2025 Q1) SEC report(s): increased the number of shares of 2, decreased the number of shares of 4 and completely sold out 1 position(s).

What stocks is Mark Massey buying now?

In the recent quarter Mark Massey has purchased 2 securities: (MSFT) MICROSOFT CORP (added shares +36.32%) and (HLT) HILTON WORLDWIDE HOLDINGS IN (added shares +199.97%).

What does Mark Massey invest in?

Mark Massey's top 5 holdings (by % of portfolio) are (TDG) TRANSDIGM GROUP INC (27.26%), (AMZN) AMAZONCOM INC (19.9%), (MSFT) MICROSOFT CORP (19.46%), (GOOGL) ALPHABET INC-CL A (10.74%) and (MCO) MOODY'S CORP (8.9%).

In the latest report(s) the following changes have been made to the top investments: (TDG) TRANSDIGM GROUP INC (reduced shares -2.06%), (AMZN) AMAZONCOM INC (reduced shares -1.44%), (MSFT) MICROSOFT CORP (added shares +36.32%) and (GOOGL) ALPHABET INC-CL A (reduced shares -0.76%).

History
Ticker
Stock
%
Activity
Share
Change
% change to
Portfolio
Reported
Price*
% difference
Current Price
% of
Portfolio
2016 Q2 (8 results)
CHTR
CHARTER COMMUNICATIONS INC-A
buy
+547,937
+22.76%
$228.64
78.80% $408.81
22.76%
BRK.B
BERKSHIRE HATHAWAY INC CL-B
buy
+208,147
+8.30%
$144.79
235.50% $485.77
0.00%
9999826D
LIBERTY GLOBAL PLC LILAC - C
+765.99%
+352,700
+2.08%
$32.49
-
2.35%
LBTYK
LIBERTY GLOBAL PLC- C
+25.20%
+457,950
+3.70%
$28.65
64.01% $10.31
18.36%
MCO
MOODY'S CORP
-4.60%
-30,101
-0.81%
$93.71
435.26% $501.59
16.89%
TDG
TRANSDIGM GROUP INC
-39.86%
-291,067
-13.94%
$263.69
476.68% $1,520.64
21.04%
IBKR
INTERACTIVE BROKERS GRO-CL A
-73.53%
-80,000
-0.13%
$8.85
525.90% $55.41
0.00%
9876540D
FORMER CHARTER COMMUNICATION
-100.00%
-557,331
-20.50%
$202.43
-
0.00%
2016 Q1 (5 results)
MCO
MOODY'S CORP
+23.44%
+133,264
+3.51%
$96.56
419.46% $501.59
18.51%
LBTYK
LIBERTY GLOBAL PLC- C
+17.88%
+294,837
+2.96%
$37.56
72.55% $10.31
19.50%
9876540D
FORMER CHARTER COMMUNICATION
+14.36%
+70,000
+2.61%
$202.43
-
0.00%
V
VISA INC-CLASS A SHARES
+12.82%
+32,100
+0.45%
$76.48
364.24% $355.05
3.98%
TDG
TRANSDIGM GROUP INC
+5.03%
+34,972
+1.42%
$220.34
590.13% $1,520.64
29.66%
2015 Q4 (4 results)
LBTYK
LIBERTY GLOBAL PLC- C
+37.82%
+655,869
+5.44%
$40.77
74.71% $10.31
19.81%
MCO
MOODY'S CORP
+14.68%
+107,860
+2.20%
$100.34
399.89% $501.59
17.18%
TDG
TRANSDIGM GROUP INC
+12.16%
+75,380
+3.50%
$228.45
565.63% $1,520.64
32.29%
9876540D
FORMER CHARTER COMMUNICATION
-2.77%
-13,900
-0.52%
$183.10
-
18.14%
2015 Q3 (8 results)
9999826D
LIBERTY GLOBAL PLC LILAC - C
buy
+35,224
+0.38%
$34.25
-
0.38%
LBTYK
LIBERTY GLOBAL PLC- C
+63.92%
+676,170
+6.61%
$41.02
74.87% $10.31
16.95%
MCO
MOODY'S CORP
+57.31%
+267,595
+6.26%
$98.20
410.78% $501.59
17.19%
9876540D
FORMER CHARTER COMMUNICATION
+56.11%
+140,513
+7.55%
$175.85
-
21.01%
TDG
TRANSDIGM GROUP INC
+42.95%
+139,681
+9.43%
$212.41
615.90% $1,520.64
31.38%
MA
MASTERCARD INC - A
+2.10%
+8,300
+0.18%
$90.12
523.54% $561.94
8.67%
V
VISA INC-CLASS A SHARES
-10.59%
-29,660
-0.49%
$69.66
409.69% $355.05
4.16%
IBKR
INTERACTIVE BROKERS GRO-CL A
-17.82%
-23,600
-0.06%
$9.87
461.34% $55.41
0.26%
2015 Q2 (7 results)
IBKR
INTERACTIVE BROKERS GRO-CL A
buy
+107,247
+0.44%
$10.39
433.18% $55.41
0.44%
9876540D
FORMER CHARTER COMMUNICATION
+312.44%
+243,235
+13.29%
$171.25
-
17.54%
TDG
TRANSDIGM GROUP INC
+87.11%
+201,871
+14.47%
$224.67
576.83% $1,520.64
31.07%
LBTYK
LIBERTY GLOBAL PLC- C
+31.67%
+254,400
+4.11%
$50.63
79.64% $10.31
17.08%
MA
MASTERCARD INC - A
+26.85%
+83,700
+2.50%
$93.48
501.13% $561.94
11.79%
MCO
MOODY'S CORP
+8.03%
+27,585
+1.19%
$107.96
364.61% $501.59
16.08%
V
VISA INC-CLASS A SHARES
-18.84%
-65,000
-1.39%
$67.15
428.74% $355.05
6.00%
2015 Q1 (7 results)
9876540D
FORMER CHARTER COMMUNICATION
buy
+77,850
+7.51%
$193.12
-
7.51%
MCO
MOODY'S CORP
+98.80%
+214,800
+11.14%
$103.80
383.23% $501.59
22.42%
LBTYK
LIBERTY GLOBAL PLC- C
+69.24%
+276,097
+8.18%
$49.81
79.30% $10.31
20.00%
TDG
TRANSDIGM GROUP INC
+49.44%
+63,249
+8.38%
$218.72
595.25% $1,520.64
25.33%
V
VISA INC-CLASS A SHARES
+32.02%
+83,700
+2.74%
$65.41
442.82% $355.05
11.28%
MA
MASTERCARD INC - A
+20.02%
+52,000
+2.25%
$86.39
550.47% $561.94
13.46%
DPZ
DOMINO'S PIZZA INC
-100.00%
-76,498
-3.60%
$94.17
378.48% $450.60
0.00%
39 of 232

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.