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Super Investors Ma Investment Partnership, LP
MI

Ma Investment Partnership, LP

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$561M
Positions
13
Quarter ended
June 30, 2026
Filed
August 17, 2026

Reported portfolio value by quarter (12 quarters reported)

$8.93B —
Q4 20 Q3 21 Q2 22 Q4 25 Q2 26

$149M in Q4 2020 → $561M now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
Sandisk Corp 40.5% Unchanged 100,000 $227M
Nvidia Corporation 14.3% Added 100% 400,000 $80M
Advanced Micro Devices Inc 10.3% Unchanged 100,000 $58.1M
Reddit Inc 6.2% Added 100% 200,000 $34.7M
Vertiv Holdings Co 6.0% Unchanged 100,000 $33.5M
Silicon Motion Technology Co 5.9% New 100,000 $33.3M
Bloom Energy Corp 5.4% Unchanged 100,000 $30.3M
Viavi Solutions Inc 4.3% Unchanged 500,000 $23.9M
VS Victorias Secret And Co 3.0% New 200,000 $16.7M
AG Alibaba Group Hldg Ltd 1.7% Unchanged 100,000 $9.6M
Lemonade Inc 1.2% Unchanged 100,000 $6.51M
Bandwidth Inc 1.1% New 100,000 $6.33M
Sound Group Inc 0.2% Unchanged 100,000 $1.12M

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 17, 2026

Company Action Shares changed Value of change % of portfolio
Nvidia Corporation Added +200,000 +$40M 14.3%
Silicon Motion Technology Co New +100,000 +$33.3M 5.9%
Reddit Inc Added +100,000 +$17.4M 6.2%
VS Victorias Secret And Co New +200,000 +$16.7M 3.0%
Bandwidth Inc New +100,000 +$6.33M 1.1%

Q1 2026

quarter ended March 31, 2026 · filed May 18, 2026

Company Action Shares changed Value of change % of portfolio
Nvidia Corporation New +200,000 +$34.9M 16.8%
Reddit Inc New +100,000 +$13.5M 6.5%
Advanced Micro Devices Inc Trimmed −50,000 −$10.2M 9.8%
Viavi Solutions Inc Added +300,000 +$9.98M 8.0%
AG Alibaba Group Hldg Ltd Trimmed −50,000 −$6.27M 6.0%

Q4 2025

quarter ended December 31, 2025 · filed May 18, 2026

Company Action Shares changed Value of change % of portfolio
Advanced Micro Devices Inc New +150,000 +$32.1M 28.0%
Sandisk Corp New +100,000 +$23.7M 20.7%
AG Alibaba Group Hldg Ltd New +150,000 +$22M 19.2%
Vertiv Holdings Co New +100,000 +$16.2M 14.1%
Bloom Energy Corp New +100,000 +$8.69M 7.6%
Lemonade Inc New +100,000 +$7.12M 6.2%
Viavi Solutions Inc New +200,000 +$3.56M 3.1%
Sound Group Inc New +100,000 +$1.16M 1.0%
0 0 Exited +0 — —

Q4 2022

quarter ended December 31, 2022 · filed February 14, 2023

Company Action Shares changed Value of change % of portfolio
SS SPDR S&P 500 ETF Tr Exited −25,000 −$8.93B —
0 0 New +0 — —

Q3 2022

quarter ended September 30, 2022 · filed November 14, 2022

Company Action Shares changed Value of change % of portfolio
SS SPDR S&P 500 ETF Tr New +25,000 +$8.93B 100.0%
0 0 Exited +0 — —

Q2 2022

quarter ended June 30, 2022 · filed August 08, 2022

No position changes this quarter.

Q1 2022

quarter ended March 31, 2022 · filed May 16, 2022

No position changes this quarter.

Q4 2021

quarter ended December 31, 2021 · filed February 15, 2022

Company Action Shares changed Value of change % of portfolio
Sea Ltd Exited −100,000 −$31.9M —
Snap Inc Exited −400,000 −$29.5M —
Roku Inc Exited −75,000 −$23.5M —
S Square Inc Exited −80,000 −$19.2M —
CH Crowdstrike Hldgs Inc Exited −50,000 −$12.3M —
Cloudflare Inc Exited −100,000 −$11.3M —
Advanced Micro Devices Inc Exited −100,000 −$10.3M —
Pinterest Inc Exited −200,000 −$10.2M —
TH Teledoc Health Inc Exited −59,200 −$7.51M —
PN Penn Natl Gaming Inc Exited −50,000 −$3.62M —

Showing the 10 largest of 13 changes.

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