Altarock Partners

Rating #59

Mark Massey

Altarock Partners

Portfolio value

$4.13B

Stocks

8

Performance

1 Year

-1.10%

Stock Holdings

$

%

1Y

3Y

5Y

10Y

Mark Massey’s Portfolio: Q1 2026

Top8 stocks: 99.99% of the portfolio

Mark Massey’s Trades: Q1 2026

Adds

New Buys

Sold Outs

Cuts

AMZN logo
AMZN

Share Count Chg. (%)

Add +3.46%

Price Paid
$220.17
Buy Value
$55.79M
Portfolio % Change

5.09ppt

MCO logo
MCO

Share Count Chg. (%)

Add +5.84%

Price Paid
$473.05
Buy Value
$22.49M
Portfolio % Change

0.96ppt

Mark Massey’s Holdings: Q1 2026

Company Name
Primary Industry
Avg. price paid
sort
Share Count Chg. (%)
sort
No of shares held
sort
Market value
sort
Portfolio % Change
sort
% of Ownership
sort
Holding period
sort
Last Transaction
Retail-Catalog & Mail-Order
$164.40

Add +3.46%

7.57M
$1.58B

38.20%

5.09ppt

0.07%
17 Quarters
Q1 2026
Other Aircraft Equipment
$424.95

Cut -6.21%

909.17K
$1.05B

25.54%

0.26ppt

1.56%
46 Quarters
Q1 2026
Prepackaged Software
$320.78

Cut -10.32%

1.87M
$691.31M

16.75%

-2.99ppt

0.03%
20 Quarters
Q1 2026
Consumer Credit Reporting
$351.56

Add +5.84%

862.04K
$376.06M

9.11%

0.96ppt

0.48%
46 Quarters
Q1 2026
Other Business Services
$371.70

Cut -3.51%

522.84K
$261.24M

6.33%

0.27ppt

0.06%
46 Quarters
Q1 2026
Other Business Services
$216.46

Cut -3.48%

498.68K
$150.72M

3.65%

0.10ppt

0.03%
46 Quarters
Q1 2026
Computer Programming & Data
$82.60

Cut -74.38%

43.39K
$12.48M

0.30%

-0.74ppt

0.00%
26 Quarters
Q1 2026
Hotels & Motels
$250.12

Cut -97.17%

15.34K
$4.66M

0.11%

-2.94ppt

0.01%
6 Quarters
Q1 2026
gainifypowered-by-sp
Socials
Send us an emailFollow us on XConnect with us on LinkedInFollow us on InstagramFollow us on ThreadsCheck us out on TrustpilotFollow us on YouTubeFind us on Google Maps
Market data is sourced from S&P Global Market Intelligence. All insights and analysis are developed by Gainify. Copyright © 2026, S&P Global Market Intelligence. All rights reserved.
View Data Providers

NEWSLETTER

Gainify provides tools and content designed to help users explore and understand the world of investing. All information available through our platform is for educational and informational use only. It is not intended as financial, investment or legal advice, and should not be treated as a recommendation or endorsement of any investment approach.
Our content is general in nature and does not account for your personal financial circumstances. Any investment decisions you make are your responsibility. We strongly recommend speaking with a licensed financial advisor or professional before acting on any information found on Gainify. Before using Gainify, please review our Terms of Service.
© 2026 Gainify. All rights reserved.