Monolithic Power Systems Inc
MPWR · US
Monolithic Power Systems Inc is held by 5 of the 24 tracked investors in their latest 13F filings. The largest position is Norges Bank's at $1.0B, 0.10% of that portfolio. Versus the prior quarter, 2 added, 2 trimmed and 1 bought new.
Big investors holding this stock
Latest 13F of the 24 tracked investors. Common shares only.
| Investor | Value ($) | vs prior quarter |
|---|---|---|
| Norges Bank weight 0.10% · Q2 2026 |
1.0B | ▲ 3% |
| National Pension Service (Korea) weight 0.06% · Q2 2026 |
87.8M | ▼ 6% |
| Korea Investment Corporation weight 0.07% · Q2 2026 |
38.4M | ▲ 55% |
| Bridgewater Associates weight 0.02% · Q2 2026 |
4.3M | ▼ 74% |
| Baillie Gifford weight 0.00% · Q2 2026 |
0.0M | New |
Questions
Which big investors own Monolithic Power Systems Inc?
Norges Bank ($1.0B), National Pension Service (Korea) ($87.8M), Korea Investment Corporation ($38.4M), Bridgewater Associates ($4.3M), Baillie Gifford ($6,912), per their latest 13F filings.
Does Warren Buffett own Monolithic Power Systems Inc?
Berkshire Hathaway did not report it in its latest 13F.
Does Korea's National Pension Service own Monolithic Power Systems Inc?
Yes, $87.8M as of 2026-06-30 (0.06% of its US holdings).
Restated and computed from SEC (13F, 13D/G, Form 4) and DART filings and NPS public data. Filings describe a past date and may differ from current holdings (13F: quarter end, up to 45 days later). Not investment advice.
Sources: SEC EDGAR, DART, data.go.kr (NPS), OpenFIGI. See Methodology for how figures are computed.