Oriental Harbor Investment Master Fund
Regulatory profile
From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.
Portfolio style
Measured from the filed 13F common-share book for Jun 30, 2026, the newest measured quarter, never from the firm's own description.
Closest benchmark: the Nasdaq-100 as of 2026-06-30, active share 67.4%; sector active share 63.1% against the combined 13F book's sector weights.
Over time 8 measured quarters
How the bands are measured
Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.
Clone Performance
Build a hypothetical price-return history from this filer's public 13F holdings.
View clone backtestPortfolio Concentration
13 tracked positions · as of Sep 30, 2026 · Δ vs Jun 30, 2026Portfolio Trend
Sector Breakdown
As of Sep 30, 2026| Sector | % Portfolio | Value |
|---|---|---|
| Technology | 68.8% | $1,010,462,342 |
| Communication Services | 27.7% | $407,215,637 |
| Consumer Cyclical | 2.4% | $35,128,156 |
| Industrials | 1.1% | $15,913,919 |
Last Quarter's Activity
Export CSVAdded To
Positions the filer increased| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| NVDA | Nvidia Corp | +148,678 | 1,232,505 | $281,479,491 | |
| GOOG | Alphabet Inc. | +110,591 | 1,160,244 | $395,341,540 | |
| AMZN | Amazon Com Inc | +81,095 | 140,992 | $35,128,156 | |
| META | Meta Platforms, Inc. | +16,133 | 16,374 | $11,874,097 | |
| MU | Micron Technology Inc | +3,306 | 150,893 | $160,717,643 | |
| SNDK | Sandisk Corp | +1,483 | 78,759 | $137,031,996 | |
| TSM | Taiwan Semiconductor Manufacturing Co Ltd | +385 | 137,674 | $62,805,502 | |
| No positions match the current search. | |||||
Trimmed
Positions the filer reduced| Ticker | Company | Type | Shares | Value (USD) | % of Portfolio | History |
|---|---|---|---|---|---|---|
| GOOG |
Alphabet Inc.
Communication Services
|
Added | 1,160,244 | $395,341,540 | 26.92% | |
| NVDA |
Nvidia Corp
Technology
|
Added | 1,232,505 | $281,479,491 | 19.16% | |
| INTC |
Intel Corp
Technology
|
Reduced | 1,758,128 | $211,379,729 | 14.39% | |
| MU |
Micron Technology Inc
Technology
|
Added | 150,893 | $160,717,643 | 10.94% | |
| SNDK |
Sandisk Corp
Technology
|
Added | 78,759 | $137,031,996 | 9.33% | |
| AAPL |
Apple Inc.
Technology
|
NEW | 274,351 | $91,364,370 | 6.22% | |
| TSM |
Taiwan Semiconductor Manufacturing Co Ltd
Technology
|
Added | 137,674 | $62,805,502 | 4.28% | |
| AMD |
Advanced Micro Devices Inc
Technology
|
Reduced | 91,594 | $56,033,545 | 3.82% | |
| AMZN |
Amazon Com Inc
Consumer Cyclical
|
Added | 140,992 | $35,128,156 | 2.39% | |
| SPCX |
Space Exploration Technologies Corp
Industrials
|
NEW | 105,488 | $15,913,919 | 1.08% | |
| META |
Meta Platforms, Inc.
Communication Services
|
Added | 16,374 | $11,874,097 | 0.81% | |
| LITE |
Lumentum Holdings Inc.
Technology
|
Reduced | 9,804 | $9,522,233 | 0.65% | |
| AVGO |
Broadcom Inc.
Technology
|
Reduced | 364 | $127,833 | 0.01% |
Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.