MPWR
MONOLITHIC POWER SYSTEMS INCMarquee-fund ownership over time
This quarter's activity
New positions opened
Positions exited
Current holders
Sorted by tenure (longest first)| Fund | First disclosed | Held | Entry price | Latest close | Return on entry |
|---|---|---|---|---|---|
| Bridgewater Associates re-entered | Q4 2020 | 23Q | $295 | $1486 | +404% |
| Citadel Advisors | Q3 2024(8Q snapshot) | 7Q | $851 | $1486 | +75% |
| D.E. Shaw | Q3 2024(8Q snapshot) | 7Q | $851 | $1486 | +75% |
| AQR Capital Management | Q3 2024(8Q snapshot) | 7Q | $851 | $1486 | +75% |
| Two Sigma Investments | Q2 2026(8Q snapshot) | 1Q | $1550 | $1486 | -4% |
“Return on entry” is the price-only move from the fund's first disclosure to today — it ignores any adds, trims, or dividends. A fund that built its position over multiple quarters has a true cost basis somewhere between entry price and latest close; this figure is the upper bound.
Past holders
Funds that exited at some point| Fund | Last entry | Exited | Entry → Exit | Return |
|---|---|---|---|---|
| Millennium Management | Q3 2024 | Q2 2026 | → $1550 | +82% |
| Renaissance Technologies 2× in & out | Q4 2025 | Q1 2026 | → $1154 | +25% |
| Coatue Management | Q2 2025 | Q3 2025 | → $844 | +20% |
| Maverick Capital 3× in & out | Q1 2024 | Q2 2024 | → $730 | -0% |
Insider activity
Form 4 — officers, directors, 10%+ ownersFiled within two business days of each transaction by anyone with material insider status at MONOLITHIC POWER SYSTEMS INC. Pair with the holders table above as a sanity check: heavy insider buying alongside marquee-fund accumulation is the strongest accumulation signal; heavy insider selling alongside fund exits is the strongest distribution signal.
30d / 90d windows measured from Jun 3, 2026 — the most recent Form 4 on file — not from today.
- Form 40001214659-26-007138Jun 3, 2026
- Form 40001214659-26-007088Jun 2, 2026
- Form 40001214659-26-006933May 29, 2026
- Form 40001214659-26-006861May 28, 2026
- Form 40001214659-26-006804May 27, 2026
- Form 40001214659-26-006798May 27, 2026
- Form 40001214659-26-006625May 20, 2026
- Form 40001214659-26-006622May 20, 2026
- Form 40001214659-26-006583May 19, 2026
- Form 40001214659-26-006521May 15, 2026
- Form 40001214659-26-006498May 15, 2026
- Form 40001214659-26-005860May 8, 2026
- Form 40001214659-26-005858May 8, 2026
- Form 40001214659-26-005811May 8, 2026
- Form 40001214659-26-005690May 6, 2026
Fundamentals
XBRL · MONOLITHIC POWER SYSTEMS INCAnnual figures sourced directly from MONOLITHIC POWER SYSTEMS INC's 10-K / 10-Q filings via SEC EDGAR XBRL. Latest fiscal year and the year-over-year change, with up to ten years of history.
Recent SEC filings
10-K · 10-Q · 8-K · 13D/G · proxyThe most recent material filings for MONOLITHIC POWER SYSTEMS INC — earnings, material events, ownership disclosures, proxy statements. Form 4 insider activity is shown in the panel above.
- 10-QFORM 10-QMay 4, 2026
- 8-KFORM 8-KApr 30, 2026
- DEF 14AFORM DEF 14AApr 30, 2026
- 10-KFORM 10-KFeb 27, 2026
- 8-KFORM 8-KFeb 27, 2026
- 8-KFORM 8-KFeb 5, 2026
- 8-KFORM 8-KDec 12, 2025
- 8-KFORM 8-KNov 21, 2025
- 10-QFORM 10-QNov 5, 2025
- 8-KFORM 8-KOct 30, 2025
- 8-KFORM 8-KSep 11, 2025
- 10-QFORM 10-QAug 4, 2025
- 8-KFORM 8-KJul 31, 2025
- 8-KFORM 8-KJun 16, 2025
- 10-QFORM 10-QMay 5, 2025
Trade history
Every open→close lifecycle across tracked funds| Fund | Open date | Close date | Open price | Close price / current | Return |
|---|---|---|---|---|---|
| Two Sigma Investments | Q2 2026 | open | $1550 | $1486 | -4% |
| Bridgewater Associates | Q1 2026 | open | $1169 | $1602 | +37% |
| Renaissance Technologies | Q4 2025 | Q1 2026 | $921 | $1154 | +25% |
| Coatue Management | Q2 2025 | Q3 2025 | $705 | $844 | +20% |
| Bridgewater Associates | Q2 2025 | Q3 2025 | $729 | $857 | +18% |
| Citadel Advisors | Q3 2024 | open | $851 | $1486 | +75% |
| D.E. Shaw | Q3 2024 | open | $851 | $1486 | +75% |
| AQR Capital Management | Q3 2024 | open | $851 | $1486 | +75% |
| Millennium Management | Q3 2024 | Q2 2026 | $851 | $1550 | +82% |
| Renaissance Technologies | Q3 2024 | Q4 2024 | $812 | $594 | -27% |
| Maverick Capital | Q1 2024 | Q2 2024 | $733 | $730 | -0% |
| Bridgewater Associates | Q4 2023 | Q2 2024 | $498 | $703 | +41% |
| Maverick Capital | Q4 2022 | Q2 2023 | $378 | $403 | +7% |
| Bridgewater Associates | Q2 2022 | Q2 2023 | $419 | $390 | -7% |
| Bridgewater Associates | Q3 2021 | Q4 2021 | $449 | $543 | +21% |
| Bridgewater Associates | Q4 2020 | Q2 2021 | $295 | $305 | +3% |
| Maverick Capital | Q4 2019 | Q1 2021 | $152 | $373 | +145% |
- Covers only the 27 marquee funds tracked here, not the full institutional universe. A “0 holders” reading does not mean unowned.
- Heavy funds (Renaissance Technologies, Citadel Advisors, Soros Fund Management, Two Sigma Investments, D.E. Shaw, AQR Capital Management, Millennium Management, Point72 Asset Management) use 8-quarter snapshots, so their pre-2024 history is missing.
- “Current” reflects each fund's most recent 13F — filings lag the actual trade by up to 45 days; positions shown may have changed since.
- Cost = price at the entry filing date. Re-entered positions show the most recent open lot.
- Options, ADRs, and unmapped CUSIPs are excluded from the follower-backtest pipeline that produces these snapshots, so certain holding types won't appear here.