Market Value Trend ($B)
47 periods
AltaRock Partners
13F Holdings and Portfolio Analysis
Mark Massey 2026 Q2 13F holdings, quarterly changes, portfolio value trend and position weight distribution.
AltaRock Partners Overview
AltaRock Partners held 8 stocks in 2026 Q2, with total market value around $4.24B.
AltaRock Partners's top five holdings in 2026 Q2: AMZN(Amazon.com, ...) 32.21%, TDG(TRANSDIGM GR...) 27.51%, MSFT(MICROSOFT CO...) 20.54%, MA(Mastercard I...) 9.26%, V(Visa Inc.) 6.77%.
- Portfolio Value
- $4.24B
- Current Holdings
- 8 stocks
- New / Increased
- 0 / 3
- Reduced / Exited
- 5 / 0
Current Holdings
| 1 | AMZNAmazon.com, ... | Common Stock | 1.37 | 32.21% | 5.73 -24.29% | -1.84 | $238.34 | $266.43 +11.79% | $186.66 | 4.50 | +$0.46B+42.74% | Reduced |
| 2 | TDGTRANSDIGM GR... | Common Stock | 1.17 | 27.51% | 0.88 -3.68% | -0.03 | $1332.04 | $1185.97 -10.97% | $424.95 | 11.75 | +$0.67B+179.09% | Reduced |
| 3 | MSFTMICROSOFT CO... | Common Stock | 0.87 | 20.54% | 2.33 +25.00% | +0.47 | $373.02 | $513.53 +37.67% | $330.69 | 5.25 | +$0.43B+55.29% | Increased |
| 4 | MAMastercard I... | Common Stock | 0.39 | 9.26% | 0.76 +46.22% | +0.24 | $513.60 | $595.30 +15.91% | $416.56 | 11.75 | +$0.14B+42.91% | Increased |
| 5 | VVisa Inc. | Common Stock | 0.29 | 6.77% | 0.84 +67.74% | +0.34 | $343.09 | $381.60 +11.22% | $267.57 | 11.75 | +$0.10B+42.62% | Increased |
| 6 | MCOMoody's Corp... | Common Stock | 0.14 | 3.23% | 0.30 -64.89% | -0.56 | $452.92 | $514.95 +13.70% | $351.80 | 11.75 | +$0.05B+46.38% | Reduced |
| 7 | GOOGLALPHABET INC... | Common Stock | 0.02 | 0.35% | 0.04 -3.22% | -0.00 | $357.37 | $346.59 -3.02% | $495.60 | 6.75 | -$0.01B-30.07% | Reduced |
| 8 | HLTHILTON WORLD... | Common Stock | 0.01 | 0.12% | 0.02 -0.91% | -0.00 | $330.46 | $321.85 -2.61% | $250.12 | 1.75 | +$0.00B+28.68% | Reduced |
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"Holding Period (yrs)" is the latest uninterrupted holding duration, calculated by dividing continuous reported quarters by 4.
Cost basis is an estimate and can differ materially from the actual cost, especially in edge cases.
Cost basis estimate: from the latest uninterrupted holding period, new or increased shares are added to the cost pool at the report price; reductions remove shares at the then-average cost. Example: buy 100 shares at $10 in Q1 and add 50 shares at $16 in Q2, estimated cost basis is (100 x 10 + 50 x 16) / 150 = $12 per share.
Return shows estimated dollar return on top and percentage return below. It uses the previous close when available, otherwise report price.
Security Type identifies common stock, funds, ADRs, derivatives, and convertible securities. A convertible security CUSIP is not its issuer's common-stock ticker.
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