Oriental Harbor Investment Master Fund 13F: Portfolio & Holdings
In its most recent SEC Form 13F-HR filing (as of Q1 2026), Oriental Harbor Investment Master Fund (SEC CIK 0002046333) reported 12 positions with a combined market value of $1.1 billion. The Hong Kong-based hedge fund maintains a highly concentrated portfolio with a Communication Services sector tilt, which represents 44.4% of its exposure.
Its largest holdings are Alphabet Cl C (GOOG) at 30.5%, Nvidia Corporation Com (NVDA) at 19.8%, and Apple (AAPL) at 7.7%.
The largest exit was Bank Montreal Que (FNGU) . See the fund’s full Q1 2026 buys, sells, and portfolio changes →
Based on published SEC 13F filings, Oriental Harbor Investment Master Fund's closest peer funds by portfolio overlap are KEYWISE CAPITAL MANAGEMENT (HK) Ltd (83.5%), Greenbrier Partners Capital Management, LLC (70.6%), and BlueSpruce Investments, LP (66.5%).
- 13F AUM
- $1.1B
- Equity Positions
- 12
- Top-10 Concentration
- 97.6%
- Largest Sector · 44.4%
- Communication Services
- Longest-Held Position · 7 qtrs
- AAPL
- Median Holding Period
- 2 Qtrs
What are Oriental Harbor Investment Master Fund’s largest 13F holdings as of Q1 2026?
Largest 13F positions disclosed by Oriental Harbor Investment Master Fund, ranked by portfolio weight. Full multi-quarter history and the broader institutional holder base for each ticker linked per row.
| # | Issuer | Ticker | Sector | Weight | Position Value | Detail |
|---|---|---|---|---|---|---|
| 1 | ALPHABET CL C | GOOG | Communication Services | 30.5% | $345.6M | Position History All Holders |
| 2 | NVIDIA CORPORATION COM | NVDA | Technology | 19.8% | $224.2M | Position History All Holders |
| 3 | APPLE | AAPL | Technology | 7.7% | $87.4M | Position History All Holders |
| 4 | PROSHARES TR | TQQQ | Unknown | 7.2% | $81.8M | Position History All Holders |
| 5 | ALPHABET CL A NEW | GOOGL | Communication Services | 7.0% | $79.7M | Position History All Holders |
| 6 | META PLATFORMS INC | META | Communication Services | 6.9% | $78.3M | Position History All Holders |
| 7 | TESLA | TSLA | Consumer Cyclical | 6.5% | $74.1M | Position History All Holders |
| 8 | TAIWAN SEMIC-ADR NEW | TSM | Technology | 6.3% | $70.9M | Position History All Holders |
| 9 | AMAZON.COM | AMZN | Consumer Cyclical | 3.3% | $37.8M | Position History All Holders |
| 10 | DIREXION SHS ETF TR | GGLL | Unknown | 2.3% | $25.6M | Position History All Holders |
View Oriental Harbor Investment Master Fund's Q1 2026 portfolio changes and trading report →
Portfolio composition
Sectors, concentrations, and a tap-through treemap of every position in the fund's latest 13F.
Holding period analytics
Distribution of holding periods for all 25 stocks the fund has ever held (up to selected quarter):
Which Funds Hold a Similar Portfolio to Oriental Harbor Investment Master Fund?
Ranked by percentage of the peer fund's 13F equity portfolio that overlaps with Oriental Harbor Investment Master Fund's positions in Q1 2026.
| # | Fund | Shared Positions | Overlap % |
|---|---|---|---|
| 1 | KEYWISE CAPITAL MANAGEMENT (HK) Ltd | 4 | 83.5% |
| 2 | Greenbrier Partners Capital Management, LLC | 5 | 70.6% |
| 3 | BlueSpruce Investments, LP | 4 | 66.5% |
| 4 | Newlands Management Operations LLC | 6 | 66.3% |
| 5 | Voyager Global Management LP | 5 | 65.8% |
| 6 | Altimeter Capital Management, LP | 4 | 63.9% |
| 7 | Horiko Capital Management LLC | 7 | 63.5% |
| 8 | H&H International Investment, LLC | 6 | 60.8% |
| 9 | M & L Capital Management Ltd | 2 | 50.8% |
| 10 | Appaloosa LP | 6 | 49.1% |
How Has Oriental Harbor Investment Master Fund's AUM Changed Over Time?
Quarterly 13F-reported AUM for Oriental Harbor Investment Master Fund, derived from aggregate reported position market values disclosed to the U.S. SEC.
| Quarter | 13F AUM (USD) | QoQ Change |
|---|---|---|
| Q3 2024 | $969M | — |
| Q4 2024 | $995M | +0.0B |
| Q1 2025 | $868M | -0.1B |
| Q2 2025 | $1.6B | +0.7B |
| Q3 2025 | $1.3B | -0.3B |
| Q4 2025 | $1.3B | +0.0B |
| Q1 2026 | $1.1B | -0.2B |
Methodology & FAQ
How We Track Oriental Harbor Investment Master Fund Holdings
Our data is systematically aggregated directly from quarterly Form 13F-HR disclosures submitted to the U.S. Securities and Exchange Commission (SEC).
- Who Must File (Reporting Threshold): This dataset includes filings from U.S. institutional investment managers, hedge funds, mutual funds, university endowments, and family offices managing at least $100 million in Section 13(f) securities (including equities, options, convertibles, ETFs, and warrants).
- What is Included (Data Scope): By regulation, 13F filings include long positions in U.S. exchange-listed stocks, ETFs, shares of closed-end investment companies, and convertible debt, as defined in the SEC's official Section 13(f) securities list . For listed options (calls/puts) the reported value is based on the notional value.
- Portfolio Weight Explained (Metric Definition): “Portfolio Weight” shows how much of a fund's total reported 13F portfolio value (excluding listed options) is allocated to a specific position on the reporting date.
- How to Use This Data (Interpretation): Quarter-over-quarter changes in shares and portfolio weight reflect a combination of active trading and market price movements. These are descriptive metrics of fund allocation, not explicit buy or sell signals.
What does Oriental Harbor Investment Master Fund's 13F filing disclose about their portfolio?
A Form 13F-HR filed by Oriental Harbor Investment Master Fund with the U.S. SEC discloses all long positions in Section 13(f) securities — U.S.-listed equities, ETFs, closed-end funds, and listed put/call options — held at quarter-end with a market value of at least $200,000 or 10,000 or more shares. Pactolio aggregates these filings to surface the manager’s reported portfolio weights, share counts, and quarter-over-quarter portfolio changes in a structured format. The filing represents a point-in-time snapshot of disclosed long-side exposure, not a real-time or complete view of the fund’s total book.
How do you measure conviction in Oriental Harbor Investment Master Fund's portfolio allocations?
Conviction is measured by portfolio weight — the percentage of Oriental Harbor Investment Master Fund’s total reported 13F market value allocated to a given position — rather than by absolute share count or dollar value alone. A position representing a disproportionately large share of the fund’s disclosed book signals high-conviction allocation, regardless of whether it ranks among the fund’s largest absolute holdings.
What is excluded from Oriental Harbor Investment Master Fund's 13F — short positions, swaps, and derivatives?
SEC Form 13F requires disclosure of long positions only. Specifically excluded are: short interest, total return swaps, credit default swaps, and all OTC derivatives — none of which appear in 13F filings regardless of position size. Listed put and call options must be disclosed but are excluded from portfolio weight calculations on this platform so that reported weights reflect direct equity exposure and remain comparable across filers. This means Oriental Harbor Investment Master Fund’s 13F represents the reported long book, which may differ materially from its net economic exposure.
When is Oriental Harbor Investment Master Fund's 13F data available, and how large is the reporting lag?
Investment managers must submit Form 13F within 45 calendar days of each quarter-end (the T+45 deadline). Pactolio ingests filings directly from SEC EDGAR as they are published — managers who file early appear in our system before the deadline, while late filers are captured on their actual filing date. The quarter label shown at the top of this page reflects the most recently processed 13F cycle for Oriental Harbor Investment Master Fund. The inherent reporting lag means the data always reflects positions as of the prior quarter-end, not current holdings.
Who must file a Form 13F with the SEC, and does Oriental Harbor Investment Master Fund qualify?
Under SEC Rule 13f-1, any investment manager — including hedge funds, family offices, registered investment advisers, pension funds, and university endowments — that exercises investment discretion over $100 million or more in Section 13(f) securities at any point during a calendar year must file Form 13F for that year. Oriental Harbor Investment Master Fund meets this threshold, which is why its holdings are publicly disclosed and accessible on this platform. The $100 million threshold is evaluated on a rolling basis, meaning new filers can enter and existing filers can exit the disclosure regime as AUM crosses that boundary.