Mark Massey 13F Portfolio
 | Hedge Fund | Portfolio Manager | Performance 26Q2 | AUM (13F) | # of Holdings | Performance Rank | Allocation |
|---|---|---|---|---|---|---|---|
| Altarock Partners | Mark Massey | 10.56% | $4239761000 | 8 |
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Altarock Partners Holdings Map
Top 50 Altarock Partners Holdings
| Stock | Company Name | % of Portfolio | Δ % of Portf | Shares Owned | Calls/Puts | Value Owned | Trade Value | Latest Activity | Ownership Hist | Net Ownership Hist | Average Buy Price | Price History | Sector | Date |
|---|
Top 50 Options Holdings
| Stock | Company Name | Option Type | Shares | Value | Latest Activity | Average Buy Price | Ownership History | Net Ownership Hist | Sector | Date |
|---|
Largest Stock Buys since Q2 2026:
| Stock | Company Name | % of Portfolio | Δ % of Portf | Shares Owned | Calls/Puts | Value Owned | Trade Value | Latest Activity | Ownership Hist | Net Ownership Hist | Average Buy Price | Price History | Date |
|---|
Largest Stock Sells since Q2 2026:
| Stock | Company Name | % of Portfolio | Δ % of Portf | Shares Owned | Calls/Puts | Value Owned | Trade Value | Latest Activity | Ownership Hist | Net Ownership Hist | Average Buy Price | Price History | Date |
|---|
Sector Allocation over time
Portfolio Structure
Data Integrity at Scale
HedgeFollow applies mass data sanitization to improve accuracy, with over 1 million errors corrected across all 13F filings.
Filing-level errors
Filing-level errors affect the entire 13F submission.
| Error Type | Affected Quarter | Filing Accession Number | |
|---|---|---|---|
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🔒 Results are restricted to reps under the institutional plan This table contains any detected filing-level issues for this fund. Examples:
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Record-level errors
Record-level errors affect individual holdings.
| Error Type | Quarter | Cusip | Incorrect Value | Correct Value | Filing Number |
|---|---|---|---|---|---|
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🔒 Results are restricted to reps under the institutional plan This table contains any detected record-level issues for this fund. Examples:
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Includes access to filing diagnostics and additional institutional features.
Altarock Partners Performance History
| Performance Metric | 3-Year Annualized Return | 3-Year Cumulative Return | Compared to other Funds |
|---|
Performance vs S&P500
Performance compared to other Funds
AUM Reported to SEC
AUM reported here may differ from 13F AUM. Why?
| Investment Advisor | Discretionary AUM | Non-Discretionary AUM | Total AUM | Reporting Date |
|---|
AUM for US vs Foreign Investors
AUM for Fund Owners vs Investors
AUM by Client Type
Total AUM vs 13F AUM
Note
Firms may now customize their profile and review potential filing errors under the Institutional plan.
Address & Contact Info
| Investment Advisor | Business Address | Phone/Fax | Work Days/Hours |
|---|
Organization
| Investment Advisor | Organization Form | Org. State & Country | # of Employees | # of Employees in Research & Investment Advising |
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# of Clients by Category
Portfolio Management Services Provided
| Investment Advisor | For Individuals & Small Business | For Investment/BizDev Companies | For Institutions | For Hedge Funds & Other PIV |
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Other Investment Services Provided
| Investment Advisor | Financial Planning | Security Rating | Pension Consulting | Newsletters | Market Timing | Education | Advisor Selection | Other |
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Other Business Services Provided
| Investment Advisor | Broker/Dealer | Broker/Dealer Rep | Commodity Trading | Futures Merchant | Real Estate | Insurance | Bank | Trust | Municipal Advisor | Swap Dealer | Swap Participant | Accountant | Lawyer | Other |
|---|
Compensation Policy
| Investment Advisor | % of AUM Fees | Performance-Based | Hourly Fees | Subscription Fees | Fixed Fees | Commissions | Other |
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Owners & Executive Officers
| Name | Title | Control Person | % Ownership | Start Date | Type | Indirect Ownership Through |
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Websites/Socials
| Website/Social Address |
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