Ma Investment Partnership, LP
HILLSBOROUGH, CA
$561m in 13 US stocks at the end of 30 June 2026. The top 10 are 97.5% of the money. It changed about 20.6% of the portfolio this quarter.
Value
$561m
Stocks
13
Top 10 share
97.5%
Turnover
20.6%
What changed this quarter
New
Bought for the first time this quarter.
- Silicon Motion TechnologySIMO5.9% of the fund
- Victoria's SecretVSXY3.0% of the fund
- BandwidthBAND1.1% of the fund
Added
Bought more of a stock they already held.
- NvidiaNVDA14.3% of the fund+100%
- RedditRDDT6.2% of the fund+100%
Cut
Sold some of their stake.
None this quarter.
Sold out
Sold their entire stake.
None this quarter.
Holdings
- Silicon Motion TechnologySIMO
- Share
- 5.9%
- Value
- $33m
- Shares
- 100,000
New
- Alibaba Group HldgBABA
- Share
- 1.7%
- Value
- $10m
- Shares
- 100,000
Held
- Sound GroupSOGP
- Share
- 0.2%
- Value
- $1m
- Shares
- 100,000
Held
| Company | Share of fund | Value | Shares | Change |
|---|---|---|---|---|
| SandiskSNDK | 40.5% | $227m | 100,000 | Held |
| NvidiaNVDA | 14.3% | $80m | 400,000 | +100% |
| Advanced Micro DevicesAMD | 10.3% | $58m | 100,000 | Held |
| RedditRDDT | 6.2% | $35m | 200,000 | +100% |
| Vertiv HoldingsVRT | 6.0% | $33m | 100,000 | Held |
| Silicon Motion TechnologySIMO | 5.9% | $33m | 100,000 | New |
| Bloom EnergyBE | 5.4% | $30m | 100,000 | Held |
| Viavi SolutionsVIAV | 4.3% | $24m | 500,000 | Held |
| Victoria's SecretVSXY | 3.0% | $17m | 200,000 | New |
| Alibaba Group HldgBABA | 1.7% | $10m | 100,000 | Held |
| LemonadeLMND | 1.2% | $7m | 100,000 | Held |
| BandwidthBAND | 1.1% | $6m | 100,000 | New |
| Sound GroupSOGP | 0.2% | $1m | 100,000 | Held |
Over time and by industry
Value over time
Dec '25
Jun '26
Value is up 390.0% since 31 December 2025.
Where the money is
Technology70.5%
Industrials11.4%
Media & telecom6.2%
Retail & consumer3.0%
Financial services1.2%
Other7.8%
From the fund's 13F filings. They list US stocks and options only, 45 days after each quarter, and leave out cash, bonds, shorts and foreign shares.