tickdelta
tickdelta
Sign in

Tickdelta is free for now. Sign up and get Pro free

← Superinvestors

Mark Massey

AltaRock Partners · 13F-HR for Q2 2026 (quarter ending 2026-06-30), filed 2026-08-17 13F data can be up to 45 days old · filing ↗
Quarter: Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024
Portfolio
$4.2B
▼ 16% over 8 quarters
Stocks
8
0 option positions not counted
Bought
+$414.2M
0 new · 3 added
Sold
−$736.5M
0 sold out · 5 cut
Largest holdings
% of portfolio · = Q1 2026nowchange, pts
AMZNAmazon.Com Inc 32.2% −6.0
TDGTransdigm Group Inc 27.5% +2.0
MSFTMicrosoft Corp 20.5% +3.8
MAMastercard Inc-Class A 9.3% +2.9
VVisa Inc-Class A Shrs 6.8% +3.1
MCOMoodys Corp 3.2% −5.9
GOOGLAlphabet Inc-Cl A 0.4% +0.1
HLTHilton Worldwide 0.1% +0.0
What they did in Q2 2026 · dollars at the quarter-end price
SoldBought -$438.1MAMZN MSFT+$174.2M -$253.4MMCO MA+$124.1M -$44.5MTDG V+$115.9M -$499KGOOGL -$46KHLT
How the portfolio's mix changed · % of the money, last 8 quarters
0%50%100% AMZN: 32.2% nowTDG: 27.5% nowMSFT: 20.5% nowMA: 9.3% nowV: 6.8% nowMCO: 3.2% nowOther: 0.5% now AMZN 32%TDG 28%MSFT 21%MA 9%V 7%MCO 3% Q3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026 0%50%100% AMZN: 32.2% nowTDG: 27.5% nowMSFT: 20.5% nowMA: 9.3% nowV: 6.8% nowMCO: 3.2% nowOther: 0.5% now AMZN 32%TDG 28%MSFT 21%MA 9%V 7%MCO 3% Q4 2024Q2 2025Q4 2025Q2 2026

Every holding in Q2 2026

Stock% of portfolioSharesValuePriceActivity
AMZN Amazon.com Inc · COMM 32.21% 5.73M$1.4B238.34 Reduced -24.3%
TDG Transdigm Group Inc · COMM 27.51% 876K$1.2B1332.04 Reduced -3.7%
MSFT Microsoft Corp · COMM 20.54% 2.33M$870.8M373.02 Added +25.0%
MA Mastercard Inc-Class A · COMM 9.26% 765K$392.7M513.60 Added +46.2%
V Visa Inc-Class A Shrs · COMM 6.77% 836K$287.0M343.09 Added +67.7%
MCO Moodys Corp · COMM 3.23% 303K$137.1M452.92 Reduced -64.9%
GOOGL Alphabet Inc-Cl A · COMM 0.35% 42K$15.0M357.37 Reduced -3.2%
HLT Hilton Worldwide · COMM 0.12% 15K$5.0M330.46 Reduced -0.9%

From the information table of the 13F-HR (and any amendment for the same quarter), lines added up by CUSIP. Values are as reported by the manager. Changes compare share counts with the previous quarter on file; a share split between the two is detected and adjusted for.