Ma Investment Partnership, LP

In its 13F for Q2 2026 (holdings as of June 30, 2026, filed August 17, 2026), Ma Investment Partnership, LP reported 13 stock positions worth $561.4 million. Its top holding was Sandisk (SNDK) at 40.5% of the portfolio, followed by Nvidia (NVDA, 14.3%) and Advanced Micro Devices (AMD, 10.3%). Compared with Q1 2026, it opened 3 new positions and added to 2. The biggest buy was a new position in Silicon Motion Technol-ADR (SIMO).

Most Recent 13F
Q2 2026
Location
HILLSBOROUGH, CA
CIK
0001536336
Portfolio Value
$561.4M (Q2 2026)
SEC Filing
0001536336-26-000005 ↗ filed Aug 17, 2026

Holdings Value

0$200.0M$400.0M$600.0M Q4 2025: $114.6M Q4 2025 Q1 2026: $208.0M Q1 2026 Q2 2026: $561.4M $561.4M Q2 2026

Holdings 13 stocks · $561.4M

SNDK Sandisk Corp. 40.50% 100,000 $227.4M No change
NVDA Nvidia Corp. 14.26% 400,000 $80.0M Add +100.0%
AMD Advanced Micro Devices 10.35% 100,000 $58.1M No change
RDDT Reddit Inc. Class A 6.18% 200,000 $34.7M Add +100.0%
VRT Vertiv Holdings Co. Class A 5.96% 100,000 $33.5M No change
SIMO Silicon Motion Technol-ADR 5.94% 100,000 $33.3M New
BE Bloom Energy Corp. Class A 5.39% 100,000 $30.3M No change
VIAV Viavi Solutions Inc. 4.25% 500,000 $23.9M No change
VSXY Victoria's Secret & Co. 2.97% 200,000 $16.7M New
BABA Alibaba Group Holding-SP ADR 1.71% 100,000 $9.6M No change
LMND Lemonade Inc. 1.16% 100,000 $6.5M No change
BAND Bandwidth Inc. Class A 1.13% 100,000 $6.3M New
SOGP Sound Group Inc. 0.20% 100,000 $1.1M No change

Portfolio Sells Q1 2026 → Q2 2026

None this quarter.

Portfolio Buys Q1 2026 → Q2 2026

SIMO Silicon Motion Technol-ADR New 5.94% +5.94
VSXY Victoria's Secret & Co. New 2.97% +2.97
BAND Bandwidth Inc. Class A New 1.13% +1.13
RDDT Reddit Inc. Class A Add +100.0% 6.18% −0.29
NVDA Nvidia Corp. Add +100.0% 14.26% −2.52

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 13$561.4MSNDK, NVDA, AMD, RDDT, VRT
Q1 2026 10$208.0MSNDK, NVDA, VRT, AMD, VIAV
Q4 2025 8$114.6MAMD, SNDK, BABA, VRT, BE