Security record · archived quarter

MPWR

Monolithic Power Systems, Inc. · Technology · Semiconductors

1,210.9 -3.1% mkt cap $59.51B quote delayed (FMP) · as of Oct 16 22:08 UTC · separate from filing data below

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024

163Tracked holders

+3Δ holders

37.39MShares held

$40.78BReported value

+6New positions

−4Exits

Stable Conviction score 36/100 How these are computed → Explain this at the Research Desk →

Momentum inputs (comparable managers): holder breadth +1.9% · share flow -6.9% · net new positions +1.2% · formula
Ownership fragmentation: more holders, smaller aggregate stake

All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026

Ownership over time

Quarter	Holders	Δ	Shares	Reported value	New	Exits
Q2 2026	164	+5	38.02M	$52.44B	+8	−4
Q1 2026	163	+3	37.39M	$40.78B	+6	−4
Q4 2025	159	0	43.73M	$37.89B	+3	−2
Q3 2025	18	+1	24.30M	$22.37B	+2	−2
Q2 2025	15	-3	21.56M	$15.77B	n/a	−3
Q1 2025	15	+2	7.50M	$4.35B	+2	n/a
Q4 2024	13	+2	7.31M	$4.33B	+2	n/a
Q3 2024	10	-2	4.86M	$4.49B	n/a	−2
Q2 2024	12	n/a	4.81M	$3.95B	n/a	n/a

Holder count

Who holds it · Q1 2026

#	Manager	Shares	Δ shares	Value	Their weight		Held
1	BlackRock ✦ (passive)	6.07M	+1.9%	$6.64B	0.1%	▲ Add	4	SEC ↗ ×22
2	Fidelity (FMR) ✦	4.40M	+10.7%	$4.81B	0.3%	▲ Add	4	SEC ↗ ×6
3	Vanguard Capital Management Llc	3.08M	n/a	$3.37B	0.1%	n/c	1	SEC ↗
4	Invesco Ltd.	2.52M	+0.2%	$2.75B	0.3%	▲ Add	2	SEC ↗ ×15
5	State Street Global Advisors ✦ (passive)	2.19M	+0.4%	$2.40B	0.1%	▲ Add	6	SEC ↗
6	Geode Capital Management ✦ (passive)	1.43M	+3.6%	$1.56B	0.1%	▲ Add	8	SEC ↗ ×2
7	T. Rowe Price ✦	1.26M	-25.3%	$1.38B	0.2%	▼ Trim	8	SEC ↗ ×2
8	Franklin Resources Inc	928.67K	-11.5%	$1.02B	0.2%	▼ Trim	2	SEC ↗ ×8
9	Morgan Stanley ✦	656.37K	+1.1%	$717.64M	0.0%	▲ Add	3	SEC ↗ ×15
10	First Trust Advisors Lp	591.35K	-15.7%	$646.56M	0.5%	▼ Trim	2	SEC ↗
11	Goldman Sachs Group ✦	568.06K	-4.3%	$621.09M	0.1%	▼ Trim	3	SEC ↗ ×5
12	Massachusetts Financial Services Co…	567.77K	-0.5%	$620.75M	0.2%	▼ Trim	2	SEC ↗ ×7
13	Barclays Plc	555.81K	-8.1%	$607.69M	0.2%	▼ Trim	2	SEC ↗ ×5
14	UBS Group AG	540.41K	+23.1%	$590.86M	0.1%	▲ Add	2	SEC ↗ ×5
15	JPMorgan Chase ✦	554.92K	+8.3%	$556.22M	0.0%	▲ Add	3	SEC ↗ ×16
16	Northern Trust Corp	489.12K	+1.1%	$534.78M	0.1%	▲ Add	2	SEC ↗ ×10
17	Royal Bank Of Canada	473.37K	+168.1%	$517.56M	0.1%	▲ Add	2	SEC ↗ ×14
18	Voya Investment Management Llc	393.56K	+15.8%	$429.85M	0.5%	▲ Add	2	SEC ↗ ×3
19	Bank Of America Corp /De/	382.16K	-30.5%	$417.84M	0.0%	▼ Trim	2	SEC ↗ ×7
20	Legal & General Group Plc	380.09K	+6.6%	$415.57M	0.1%	▲ Add	2	SEC ↗ ×3
21	Brown Advisory Inc	379.90K	-24.1%	$415.38M	0.7%	▼ Trim	2	SEC ↗ ×3
22	Charles Schwab Investment…	376.37K	+3.0%	$411.51M	0.1%	▲ Add	2	SEC ↗
23	Citigroup Inc	340.83K	+38.8%	$372.65M	0.2%	▲ Add	2	SEC ↗ ×3
24	UBS AM, a distinct business unit of…	302.20K	-5.2%	$330.42M	0.1%	▼ Trim	2	SEC ↗ ×12
25	Bank of New York Mellon Corp	289.83K	-1.8%	$316.89M	0.1%	▼ Trim	2	SEC ↗ ×20
26	Kayne Anderson Rudnick Investment…	266.67K	-9.3%	$291.56M	0.9%	▼ Trim	2	SEC ↗ ×2
27	Wellington Management ✦	250.51K	-34.9%	$273.90M	0.1%	▼ Trim	8	SEC ↗ ×4
28	Bnp Paribas Financial Markets	224.01K	-9.3%	$244.92M	0.2%	▼ Trim	2	SEC ↗
29	American Century Companies Inc	199.69K	-1.9%	$218.33M	0.1%	▼ Trim	2	SEC ↗
30	Raymond James Financial Inc	196.06K	-7.3%	$205.38M	0.1%	▼ Trim	2	SEC ↗ ×7
31	Deutsche Bank Ag\	181.73K	+4.2%	$198.69M	0.1%	▲ Add	2	SEC ↗ ×15
32	Principal Financial Group Inc	174.20K	+4.2%	$190.46M	0.1%	▲ Add	2	SEC ↗ ×4
33	California Public Employees…	159.66K	+88.2%	$174.56M	0.1%	▲ Add	2	SEC ↗
34	Amundi	158.91K	+22.7%	$173.73M	0.0%	▲ Add	2	SEC ↗ ×6
35	Hsbc Holdings Plc	158.87K	-60.4%	$173.51M	0.1%	▼ Trim	2	SEC ↗ ×7
36	Nuveen, LLC	155.85K	-3.4%	$170.40M	0.0%	▼ Trim	2	SEC ↗ ×3
37	Sei Investments Co	155.29K	-6.8%	$169.79M	0.2%	▼ Trim	2	SEC ↗ ×2
38	FIL Ltd	154.64K	-51.1%	$169.07M	0.1%	▼ Trim	2	SEC ↗
39	Dimensional Fund Advisors Lp	153.77K	+1.8%	$168.06M	0.0%	▲ Add	2	SEC ↗ ×5
40	Artisan Partners Limited Partnership	150.87K	-1.9%	$164.96M	0.3%	▼ Trim	2	SEC ↗
41	Neuberger Berman Group LLC	150.11K	-17.4%	$164.12M	0.1%	▼ Trim	2	SEC ↗ ×2
42	Nomura Asset Management…	147.97K	-10.4%	$161.78M	0.3%	▼ Trim	2	SEC ↗ ×2
43	Nomura Asset Management Co Ltd	146.88K	+25.5%	$160.59M	0.4%	▲ Add	2	SEC ↗ ×2
44	Swiss National Bank	140.54K	+7.1%	$153.66M	0.1%	▲ Add	2	SEC ↗
45	Healthcare Of Ontario Pension Plan…	135.94K	-33.0%	$148.63M	0.2%	▼ Trim	2	SEC ↗
46	Mitsubishi UFJ Asset Management…	131.58K	+10.8%	$143.87M	0.1%	▲ Add	2	SEC ↗
47	BNP Paribas Asset Management…	130.00K	+12.3%	$142.11M	0.2%	▲ Add	2	SEC ↗ ×3
48	Envestnet Asset Management Inc	125.86K	+1.0%	$137.60M	0.0%	▲ Add	2	SEC ↗
49	Allspring Global Investments…	118.81K	-22.5%	$133.00M	0.2%	▼ Trim	2	SEC ↗ ×3
50	Pictet Asset Management Holding SA	120.87K	-21.0%	$132.04M	0.1%	▼ Trim	2	SEC ↗
51	Ameriprise Financial Inc	119.42K	-10.6%	$130.58M	0.0%	▼ Trim	2	SEC ↗ ×6
52	Sumitomo Mitsui Trust Group, Inc.	114.46K	-3.8%	$125.15M	0.1%	▼ Trim	2	SEC ↗
53	Victory Capital Management Inc	111.99K	-2.6%	$122.45M	0.1%	▼ Trim	2	SEC ↗
54	Alliancebernstein L.P.	124.65K	-7.4%	$112.98M	0.0%	▼ Trim	2	SEC ↗
55	Rhumbline Advisers	102.11K	-2.0%	$111.64M	0.1%	▼ Trim	2	SEC ↗
56	Wells Fargo & Company/Mn	101.70K	+31.1%	$111.19M	0.0%	▲ Add	2	SEC ↗ ×5
57	Allianz Asset Management GmbH	96.47K	-33.8%	$105.48M	0.1%	▼ Trim	2	SEC ↗ ×6
58	Caisse De Depot Et Placement Du…	85.16K	-37.9%	$93.11M	0.1%	▼ Trim	2	SEC ↗
59	Mirae Asset Global Investments Co.…	83.26K	-3.9%	$91.04M	0.3%	▼ Trim	2	SEC ↗ ×2
60	ProShare Advisors LLC	81.44K	-18.1%	$89.04M	0.1%	▼ Trim	2	SEC ↗
61	Stifel Financial Corp	79.33K	-1.7%	$86.75M	0.1%	▼ Trim	2	SEC ↗ ×6
62	Ensign Peak Advisors, Inc	78.10K	-4.6%	$85.39M	0.2%	▼ Trim	2	SEC ↗
63	Baird Financial Group, Inc.	74.27K	-23.9%	$81.20M	0.1%	▼ Trim	2	SEC ↗ ×2
64	Adage Capital Partners ✦	73.65K	-5.4%	$80.53M	0.1%	▼ Trim	8	SEC ↗
65	Quantinno Capital Management LP	72.77K	+22.2%	$79.56M	0.1%	▲ Add	2	SEC ↗
66	California State Teachers…	72.36K	-2.3%	$79.12M	0.1%	▼ Trim	2	SEC ↗
67	Td Asset Management Inc	72.11K	-3.0%	$78.84M	0.1%	▼ Trim	2	SEC ↗ ×2
68	CIBC Bancorp USA Inc.	68.82K	n/a	$75.23M	0.1%	n/c	1	SEC ↗ ×3
69	LPL Financial LLC	67.94K	+6.0%	$74.29M	0.0%	▲ Add	2	SEC ↗
70	National Pension Service	67.72K	-9.1%	$74.04M	0.1%	▼ Trim	2	SEC ↗
71	Zurcher Kantonalbank (Zurich…	64.84K	-28.0%	$70.90M	0.2%	▼ Trim	2	SEC ↗
72	National Bank Of Canada /Fi/	63.63K	-49.3%	$69.58M	0.1%	▼ Trim	2	SEC ↗ ×3
73	Bamco Inc /Ny/	62.99K	-3.4%	$68.87M	0.2%	▼ Trim	2	SEC ↗
74	Russell Investments Group, Ltd.	54.07K	+15.7%	$58.55M	0.1%	▲ Add	2	SEC ↗ ×11
75	Canada Pension Plan Investment Board	53.34K	-23.5%	$58.32M	0.0%	▼ Trim	2	SEC ↗
76	Jones Financial Companies Lllp	53.95K	+2134.8%	$56.81M	0.0%	▲ Add	2	SEC ↗ ×2
77	Manufacturers Life Insurance…	49.65K	-7.8%	$54.29M	0.0%	▼ Trim	2	SEC ↗
78	Jennison Associates Llc	49.39K	-20.1%	$54.00M	0.0%	▼ Trim	2	SEC ↗
79	Federated Hermes, Inc.	48.56K	+139.4%	$53.10M	0.1%	▲ Add	2	SEC ↗ ×5
80	Bank Of Montreal /Can/	46.47K	-11.1%	$50.81M	0.0%	▼ Trim	2	SEC ↗ ×7
81	Universal- Beteiligungs- und…	46.52K	+14.7%	$50.77M	0.1%	▲ Add	2	SEC ↗
82	State Board Of Administration Of…	41.63K	-3.8%	$45.52M	0.1%	▼ Trim	2	SEC ↗
83	Mariner, LLC	41.16K	+1438.2%	$44.92M	0.1%	▲ Add	2	SEC ↗ ×3
84	Aviva Plc	40.87K	+2.5%	$44.69M	0.1%	▲ Add	2	SEC ↗
85	Aberdeen Group plc	39.42K	+4.6%	$43.10M	0.1%	▲ Add	2	SEC ↗ ×2
86	Pacer Advisors, Inc.	38.81K	-23.4%	$42.43M	0.1%	▼ Trim	2	SEC ↗
87	AQR Capital Management ✦	38.36K	-17.1%	$40.23M	0.0%	▼ Trim	8	SEC ↗ ×8
88	MIRAE ASSET GLOBAL ETFS HOLDINGS…	36.44K	+3.7%	$39.50M	0.1%	▲ Add	2	SEC ↗ ×3
89	Tidal Investments LLC	35.38K	+35.7%	$38.58M	0.1%	▲ Add	2	SEC ↗ ×2
90	Danske Bank A/S	32.67K	+33.8%	$35.72M	0.1%	▲ Add	2	SEC ↗ ×3
91	Swedbank AB	32.64K	-12.7%	$35.69M	0.0%	▼ Trim	2	SEC ↗ ×2
92	Squarepoint Ops LLC	32.42K	+1991.6%	$35.45M	0.1%	▲ Add	2	SEC ↗
93	Mitsubishi UFJ Trust & Banking Corp	31.91K	+7.8%	$34.89M	0.1%	▲ Add	2	SEC ↗ ×3
94	PFA Pension, Forsikringsaktieselskab	31.29K	-0.1%	$34.21M	0.1%	▼ Trim	2	SEC ↗
95	Blair William & Co/Il	30.56K	+123.9%	$33.41M	0.1%	▲ Add	2	SEC ↗
96	Susquehanna International Group, Llp	29.96K	-47.3%	$32.76M	0.0%	▼ Trim	2	SEC ↗
97	Schroder Investment Management Group	31.85K	n/a	$31.86M	0.0%	n/c	1	SEC ↗ ×3
98	Royal London Asset Management Ltd	28.95K	-1.3%	$31.66M	0.1%	▼ Trim	2	SEC ↗
99	New York State Common Retirement…	26.71K	0.0%	$29.20M	0.0%	Held	2	SEC ↗
100	Fifth Third Bancorp	25.81K	+53.4%	$28.22M	0.1%	▲ Add	2	SEC ↗

“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.

New buyers

No new tracked buyers this quarter.

Exited

Norges Bank	$658.66M	was 0.1%
Millennium Management	$22.37M	was 0.0%
Alyeska Investment Group, L.P.	$19.56M	was 0.1%
Group One Trading Llc	$842,008	was 0.0%

Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1,109 holders, 45.61M shares, $45.88B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.

Frequently co-owned

What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.

AVGO163shared holders META162shared holders LRCX162shared holders TMO162shared holders BSX162shared holders

Insider transactions

Open-market purchases (P)

No open-market insider purchases in our coverage window.

Open-market sales (S)

Sep 28 Hsing Michael

Officer, Director · 130 sh · $176,402

Sep 28 Hsing Michael

Officer, Director · 596 sh · $788,693

Sep 28 Hsing Michael

Officer, Director · 2.12K sh · $2.82M

Sep 28 Hsing Michael

Officer, Director · 1.11K sh · $1.48M

Sep 28 Hsing Michael

Officer, Director · 2.95K sh · $3.95M

Sep 28 Hsing Michael

Officer, Director · 5.78K sh · $7.77M

Sep 28 Hsing Michael

Officer, Director · 6.34K sh · $8.54M

Sep 28 Hsing Michael

Officer, Director · 10.97K sh · $14.82M

Aug 24 DEAN ROBERT W II

Officer · 32 sh · $41,527

Aug 24 CHANG KUO WEI HERBERT

Director · 50 sh · $64,078

Awards, exercises and tax withholding are never counted as buys or sales here. Methodology

Beneficial ownership

Jul 15 SC 13G: Invesco Ltd.

View original SEC filing ↗

Jul 08 SC 13G/A: FMR LLC

View original SEC filing ↗

Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR. Reporting period: Q1 2026 · Methodology · Get this via the API

☆ MPWR

New buyers

Exited

Open-market purchases (P)

Open-market sales (S)

MPWR