AltaRock Partners
AltaRock Partners, managed by industry veteran Scott Reed, oversees approximately $4.13 billion in assets under management. Reed's background includes a strong focus on value-driven investment strategies, emphasizing long-term growth and capital preservation. The firm typically maintains a concentrated portfolio, reflecting its philosophy of investing in high-conviction ideas.
AUM figures shown are calculated by summing the reported market value of all positions in SEC 13F-HR filings — not the fund's actual assets under management.
- Excludes cash, bonds, private equity, short positions, and foreign-listed stocks not required to be reported.
- For PUT and CALL options, the reported Value is the notional value of the underlying shares — not the option premium paid. This significantly overstates the actual capital at risk.
- Actual fund AUM is typically higher and includes strategies, instruments, and positions that never appear in a 13F.
- 13F filings cover institutional managers with ≥$100M in 13F securities. Positions reflect end-of-quarter holdings, disclosed up to 45 days after the period ends.
Data sourced from SEC EDGAR. This tracker is for informational purposes only and does not constitute investment advice.
Portfolio Holdings
Top 8 positions
| Ticker | Issuer | Notional | Port % | @ Filing | Now (EOD) | Since Filing | Allocation |
|---|---|---|---|---|---|---|---|
| AMZN | $1.58B | 38.20% | $208.27 | $245.76 | +18.0% | 38.2% | |
| TDG | $1.05B | 25.54% | $1158.96 | $1328.67 | +14.6% | 25.5% | |
| MSFT | $691.3M | 16.75% | $369.37 | $389.31 | +5.4% | 16.8% | |
| MCO | $376.1M | 9.11% | $435.21 | $502.50 | +15.5% | 9.1% | |
| MA | $261.2M | 6.33% | $498.80 | $531.94 | +6.6% | 6.3% | |
| V | $150.7M | 3.65% | $301.61 | $352.19 | +16.8% | 3.6% | |
| GOOGL | $12.5M | 0.30% | $287.39 | $366.24 | +27.4% | 0.3% | |
| HLT | $4.7M | 0.11% | $303.94 | $341.73 | +12.4% | 0.1% |
Quarter-on-Quarter Activity
Q1 2026 vs. Q4 2025
New Positions
None this quarter
Exited Positions
None this quarter
Increased (2)
| Ticker | Issuer | Notional | Shares Δ | Since Filing |
|---|---|---|---|---|
| MCO | $-40.0M | +5.8% | +15.5% | |
| AMZN | $-112.2M | +3.5% | +18.0% |
Trimmed (6)
| Ticker | Issuer | Notional | Shares Δ | Since Filing |
|---|---|---|---|---|
| HLT | $-151.2M | -97.2% | +12.4% | |
| GOOGL | $-40.5M | -74.4% | +27.4% | |
| MSFT | $-315.8M | -10.3% | +5.4% | |
| TDG | $-235.5M | -6.2% | +14.6% | |
| MA | $-48.1M | -3.5% | +6.6% | |
| V | $-30.5M | -3.5% | +16.8% |
Quarter Activity
During the quarter, AltaRock Partners made no new acquisitions or exits in their portfolio. The fund increased its holdings in MCO and AMZN by $6 million and $4 million, respectively. Notably, the fund significantly reduced its positions in HLT and GOOGL by $97 million and $74 million, respectively, alongside smaller reductions in MSFT, TDG, and MA.
AI Commentary
<p>AltaRock Partners' portfolio is heavily concentrated in the technology and financial services sectors, with major holdings in Amazon.com Inc (AMZN) and TransDigm Group Inc (TDG) representing 38.2% and 25.5% of the portfolio respectively. Other significant investments include Microsoft Corp (MSFT) at 16.8%, Moody's Corp (MCO) at 9.1%, and MasterCard Inc (MA) at 6.3%. The fund's focus on large-cap, high-growth companies is evident, with a combined allocation of over 90% in just five companies, underscoring a high conviction in these sectors.</p> <p>The recent quarterly adjustments in AltaRock Partners' portfolio suggest a strategic shift in their investment focus. The fund increased its stake in Moody's Corp (MCO) by 6% and Amazon.com Inc (AMZN) by 4%, indicating a bolstered confidence in these companies. Conversely, significant reductions in Hilton Worldwide (HLT) by 97% and Alphabet Inc (GOOGL) by 74% signal a retreat from these positions. The decrease in Microsoft Corp (MSFT) by 10% and TransDigm Group Inc (TDG) by 6% might suggest a slight rebalancing or profit-taking strategy. These changes reflect a nuanced adjustment to the fund's exposure to certain industries and individual stock performances, possibly in response to evolving market conditions or sector outlooks.</p>