SIMO · Silicon Motion Technology CORP · Holdings

$280.50 +5.26 (+1.91%) At close · Oct 2

Market Cap

$9.37B

33.91M

Volume · Oct 2 641.86K Avg daily vol (3M) 936.26K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.

Quarter:

Holders: 391

Total Value: $8,793,685,154

Total Shares: 26,381,860

Showing 1–100 of 406 holdings by value · page 1 of 5

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 390 13F filers

Top Holder

8.6%

of institutional value

Top 5

26.0%

of institutional value

Top 10

41.4%

of institutional value

HHI

251

Broadly held

Showing 100 of 406

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

FMR LLC

$759,267,072

8.63%

2,277,824

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	2,029,821	$676,600,233	89.1%	Defined
FIDELITY MANAGEMENT TRUST CO	3,900	$1,299,987	0.2%	Defined
Fidelity Institutional Asset Management Trust Co	163,378	$54,458,788	7.2%	Defined
FIAM LLC	80,725	$26,908,064	3.5%	Defined

ACADIAN ASSET MANAGEMENT LLC

$438,608,280

4.99%

1,315,838

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	1,315,838	$438,608,280	100.0%	Defined

Invesco Ltd.

$380,808,524

4.33%

1,142,437

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	1,140,505	$380,164,531	99.8%	Defined
Invesco Capital Management LLC	1,932	$643,993	0.2%	Defined

ALKEON CAPITAL MANAGEMENT LLC

$366,662,999

4.17%

1,100,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OPPENHEIMER ASSET MANAGEMENT INC.	115,047	$38,348,616	10.5%	Other
Held directly	984,953	$328,314,383	89.5%	Sole

HAWK RIDGE CAPITAL MANAGEMENT LP

$338,401,615

3.85%

1,015,215

REINHART PARTNERS, LLC.

$322,016,779

3.66%

966,060

Polar Capital Holdings Plc

$310,455,228

3.53%

931,375

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Polar Capital LLP	931,375	$310,455,228	100.0%	Defined

Driehaus Capital Management LLC

$262,022,046

2.98%

786,074

TWO SIGMA INVESTMENTS, LP

$233,699,329

2.66%

701,105

Wolf Hill Capital Management, LP

$182,928,504

2.08%

548,791

BAHL & GAYNOR INC

$151,100,822

1.72%

453,307

Granahan Investment Management, LLC

$148,582,514

1.69%

445,752

LAZARD ASSET MANAGEMENT LLC

$145,308,879

1.65%

435,931

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$143,765,229

1.63%

431,300

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	431,300	$143,765,229	100.0%	Other

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

$139,296,607

1.58%

417,894

LORD, ABBETT & CO. LLC

$125,965,073

1.43%

377,899

D. E. Shaw & Co., Inc.

$121,033,789

1.38%

363,105

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	363,105	$121,033,789	100.0%	Defined

Analog Century Management LP

$120,832,791

1.37%

362,502

SYSTEMATIC FINANCIAL MANAGEMENT LP

$118,070,818

1.34%

354,216

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AFFILIATED MANAGERS GROUP, INC.	348,296	$116,097,505	98.3%	Defined
MORGAN STANLEY	5,920	$1,973,313	1.7%	Other

BIT Capital GmbH

$116,397,169

1.32%

349,195

OBERWEIS ASSET MANAGEMENT INC/

$105,448,945

1.20%

316,350

Robeco Institutional Asset Management B.V.

$99,898,667

1.14%

299,699

MARSHALL WACE, LLP

$97,277,692

1.11%

291,836

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	291,836	$97,277,692	100.0%	Other

MORGAN STANLEY

$97,241,355

1.11%

291,727

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO. LLC	2,002	$667,326	0.7%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	160,953	$53,650,463	55.2%	Defined
MORGAN STANLEY AIP GP LP	9,469	$3,156,301	3.2%	Defined
MORGAN STANLEY INVESTMENT MANAGEMENT INC	407	$135,665	0.1%	Defined
MORGAN STANLEY SMITH BARNEY LLC	59,251	$19,750,135	20.3%	Defined
Morgan Stanley Bank Asia Ltd	22,287	$7,428,925	7.6%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	35,559	$11,852,881	12.2%	Defined
EATON VANCE MANAGEMENT	21	$6,999	0.0%	Defined
Calvert Research & Management	1,778	$592,660	0.6%	Defined

JANE STREET GROUP, LLC

$95,099,049

1.08%

285,300

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	285,300	$95,099,049	100.0%	Defined

BANK OF AMERICA CORP /DE/

$92,260,741

1.05%

276,785

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	25,821	$8,606,913	9.3%	Defined
MERRILL LYNCH, PIERCE, FENNER & SMITH INC.	94,266	$31,421,685	34.1%	Defined
BOFA SECURITIES, INC.	1,986	$661,993	0.7%	Defined
MANAGED ACCOUNT ADVISORS LLC joint	154,712	$51,570,150	55.9%	Defined

VOYA INVESTMENT MANAGEMENT LLC

$91,706,415

1.04%

275,122

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Voya Investment Management Co. LLC joint	275,122	$91,706,415	100.0%	Defined

SCHWARTZ INVESTMENT COUNSEL INC

$89,999,100

1.02%

270,000

SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC

$87,270,793

0.99%

261,815

JANE STREET GROUP, LLC

$72,032,613

0.82%

216,100

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	216,100	$72,032,613	100.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$70,832,625

0.81%

212,500

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	212,500	$70,832,625	100.0%	Other

MASSACHUSETTS FINANCIAL SERVICES CO /MA/

$68,316,314

0.78%

204,951

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MFS Institutional Advisors, Inc.	2,172	$723,992	1.1%	Defined
MFS Investment Management CO (LUX) S.A.R.L.	6,880	$2,293,310	3.4%	Defined
MFS Heritage Trust CO	1,425	$474,995	0.7%	Defined
MFS INVESTMENT MANAGEMENT CANADA LTD	2,981	$993,656	1.5%	Defined
Held directly	191,493	$63,830,361	93.4%	Sole

HIGHLAND PEAK CAPITAL, LLC

$67,618,323

0.77%

202,857

Russell Investments Group, Ltd.

$66,781,327

0.76%

200,346

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC joint	28,930	$9,643,236	14.4%	Other
Russell Investments Canada Limited joint	1,942	$647,326	1.0%	Other
Russell Investments Capital, LLC	27,467	$9,155,575	13.7%	Defined
Russell Investments France SAS	6,005	$2,001,646	3.0%	Defined
Russell Investments Japan Co., LTD. joint	429	$142,998	0.2%	Other
Russell Investments Limited joint	100,603	$33,533,997	50.2%	Defined
Russell Investments Trust Company joint	34,970	$11,656,549	17.5%	Other

Boston Partners

$66,399,669

0.76%

199,201

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Boston Partners Trust Co	5,025	$1,674,983	2.5%	Defined
Held directly	194,176	$64,724,686	97.5%	Defined

ALLIANCEBERNSTEIN L.P.

$64,460,022

0.73%

193,382

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	193,382	$64,460,022	100.0%	Defined

WELLINGTON MANAGEMENT GROUP LLP

$61,749,714

0.70%

185,251

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Wellington Management Company LLP	109,870	$36,622,967	59.3%	Defined
Wellington Managment Canada LLC	653	$217,664	0.4%	Defined
Wellington Management International Ltd	39,552	$13,183,868	21.4%	Defined
Wellington Trust Company, NA joint	34,040	$11,346,553	18.4%	Defined
Wellington Management Europe GmbH	1,136	$378,662	0.6%	Defined

FengHe Fund Management Pte. Ltd.

$60,493,395

0.69%

181,482

UBS Group AG

$60,139,396

0.68%

180,420

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	69,220	$23,073,102	38.4%	Defined
UBS AG	109,347	$36,448,635	60.6%	Defined
UBS Switzerland AG	1,676	$558,661	0.9%	Defined
UBS Bank (Canada)	90	$29,999	0.0%	Defined
UBS Securities LLC	87	$28,999	0.0%	Defined

MILLENNIUM MANAGEMENT LLC

$59,981,400

0.68%

179,946

Apis Capital Advisors, LLC

$59,466,072

0.68%

178,400

NEUMEIER POMA INVESTMENT COUNSEL LLC

$58,802,078

0.67%

176,408

Ophir Asset Management Pty Ltd

$58,111,085

0.66%

174,335

LOOMIS SAYLES & CO L P

$53,810,127

0.61%

161,432

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
LOOMIS SAYLES TRUST COMPANY, LLC	26,939	$8,979,576	16.7%	Defined
Held directly	134,493	$44,830,551	83.3%	Defined

HERALD INVESTMENT MANAGEMENT Ltd

$49,232,841

0.56%

147,700

AIGH Capital Management LLC

$47,999,519

0.55%

144,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Worth Venture Partners, LLC	35,078	$11,692,549	24.4%	Other
Held directly	108,922	$36,306,970	75.6%	Sole

SEI INVESTMENTS CO

$47,441,858

0.54%

142,327

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SEI INVESTMENTS MANAGEMENT CORP	5,200	$1,733,316	3.7%	Sole
SEI TRUST CO	137,127	$45,708,542	96.3%	Sole

Qube Research & Technologies Ltd

$46,143,871

0.52%

138,433

CITADEL ADVISORS LLC

$45,599,544

0.52%

136,800

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	136,800	$45,599,544	100.0%	Defined

MANUFACTURERS LIFE INSURANCE COMPANY, THE

$43,178,568

0.49%

129,537

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MANULIFE FINANCIAL CORP joint	129,537	$43,178,568	100.0%	Defined

First Eagle Investment Management, LLC

$41,911,913

0.48%

125,737

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
FIRST EAGLE SEPARATE ACCOUNT MANAGEMENT, LLC	62	$20,666	0.0%	Sole
Held directly	125,675	$41,891,247	100.0%	Sole

BLAIR WILLIAM & CO/IL

$41,724,916

0.47%

125,176

GOLDMAN SACHS GROUP INC

$41,564,917

0.47%

124,696

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	121,402	$40,466,928	97.4%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	3,294	$1,097,989	2.6%	Defined

NORTHERN TRUST CORP

$41,358,585

0.47%

124,077

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	124,077	$41,358,585	100.0%	Defined

HEARTLAND ADVISORS INC

$41,297,920

0.47%

123,895

Ratan Capital Management LP

$39,207,274

0.45%

117,623

CITADEL ADVISORS LLC

$38,899,611

0.44%

116,700

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	116,700	$38,899,611	100.0%	Defined

Tidal Investments LLC

$38,872,944

0.44%

116,620

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
VISTASHARES ADVISORS LLC	108,220	$36,072,972	92.8%	Defined
Held directly	8,400	$2,799,972	7.2%	Sole

KNIGHTSBRIDGE ASSET MANAGEMENT, LLC

$38,093,619

0.43%

114,282

ENVESTNET ASSET MANAGEMENT INC

$37,259,627

0.42%

111,780

RAYMOND JAMES FINANCIAL INC

$36,902,963

0.42%

110,710

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RAYMOND JAMES & ASSOCIATES	39,528	$13,175,868	35.7%	Defined
Raymond James Financial Services Advisors, Inc.	8,140	$2,713,306	7.4%	Defined
CHARTWELL INVESTMENT PARTNERS, LLC	63,042	$21,013,789	56.9%	Defined

WESTFIELD CAPITAL MANAGEMENT CO LP

$35,488,311

0.40%

106,466

BNP PARIBAS ASSET MANAGEMENT Holding S.A.

$35,314,980

0.40%

105,946

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AXA INVESTMENT MANAGERS UK LIMITED	105,946	$35,314,980	100.0%	Defined

AMERIPRISE FINANCIAL INC

$34,172,657

0.39%

102,519

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Columbia Management Investment Advisers, LLC joint	95,909	$31,969,346	93.6%	Defined
Ameriprise Financial Services, LLC	6,597	$2,198,978	6.4%	Defined
Ameriprise Bank, FSB	13	$4,333	0.0%	Defined

Ma Investment Partnership, LP

$33,333,000

0.38%

100,000

Stephens Investment Management Group LLC

$33,032,336

0.38%

99,098

FRED ALGER MANAGEMENT, LLC

$32,100,677

0.37%

96,303

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Weatherbie Capital, LLC	91,287	$30,428,695	94.8%	Sole
Redwood Investments, LLC	3,072	$1,023,989	3.2%	Sole
Held directly	1,944	$647,993	2.0%	Sole

Walleye Trading LLC

$29,338,039

0.33%

88,015

NOMURA ASSET MANAGEMENT INTERNATIONAL INC.

$25,282,747

0.29%

75,849

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NOMURA HOLDINGS INC joint	75,849	$25,282,747	100.0%	Defined

BlackRock, Inc.

$25,248,412

0.29%

75,746

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BlackRock Investment Management, LLC	76	$25,333	0.1%	Sole
BlackRock Fund Advisors	15,483	$5,160,948	20.4%	Sole
BlackRock Institutional Trust Company, N.A.	950	$316,663	1.3%	Sole
BlackRock (Netherlands) B.V.	440	$146,665	0.6%	Sole
BlackRock Asset Management Ireland Ltd	674	$224,664	0.9%	Sole
Aperio Group, LLC	58,123	$19,374,139	76.7%	Sole

Ceredex Value Advisors LLC

$24,566,421

0.28%

73,700

STATE STREET CORP

$24,466,755

0.28%

73,401

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	73,401	$24,466,755	100.0%	Defined

Bank of New York Mellon Corp

$23,426,427

0.27%

70,280

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BNY Mellon, NA joint	53	$17,665	0.1%	Defined
BNY Mellon Advisors, Inc.	2,263	$754,325	3.2%	Defined
Newton Investment Management North America, LLC joint	67,962	$22,653,771	96.7%	Defined
Held directly	2	$666	0.0%	Defined

SG Capital Management LLC

$22,008,779

0.25%

66,027

Balyasny Asset Management L.P.

$21,479,118

0.24%

64,438

VOLORIDGE INVESTMENT MANAGEMENT, LLC

$20,665,126

0.23%

61,996

CastleKnight Management LP

$20,491,461

0.23%

61,475

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND

$20,199,798

0.23%

60,600

PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO

$20,099,799

0.23%

60,300

Jump Financial, LLC

$19,939,133

0.23%

59,818

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jump Trading Holdings, LLC joint	2,818	$939,323	4.7%	Defined
Leap GP LLC joint	57,000	$18,999,810	95.3%	Defined

M&G PLC

$19,525,138

0.22%

58,576

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
M&G Investment Management Limited	58,576	$19,525,138	100.0%	Defined

WELLS FARGO & COMPANY/MN

$19,149,474

0.22%

57,449

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	19,727	$6,575,600	34.3%	Defined
WELLS FARGO CLEARING SERVICES, LLC	37,667	$12,555,541	65.6%	Defined
WELLS FARGO INVESTMENT INSTITUTE, INC.	55	$18,333	0.1%	Defined

ROYCE & ASSOCIATES LP

$18,919,810

0.22%

56,760

ROYAL BANK OF CANADA

$18,226,815

0.21%

54,681

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC Capital Markets, LLC	53,322	$17,773,822	97.5%	Defined
RBC Dominion Securities Inc.	766	$255,330	1.4%	Defined
RBC Trust Co (Delaware) Ltd	466	$155,331	0.9%	Defined
RBC Rochdale, LLC	117	$38,999	0.2%	Defined
Held directly	10	$3,333	0.0%	Sole

THAMES CAPITAL MANAGEMENT LLC

$17,607,490

0.20%

52,823

Hood River Capital Management LLC

$17,530,158

0.20%

52,591

GEODE CAPITAL MANAGEMENT, LLC

$17,336,826

0.20%

52,011

Trexquant Investment LP

$17,287,493

0.20%

51,863

NEUBERGER BERMAN GROUP LLC

$16,950,830

0.19%

50,853

Janney Montgomery Scott LLC

$16,291,837

0.19%

48,876

TUDOR INVESTMENT CORP ET AL

$15,233,181

0.17%

45,700

NEW YORK STATE COMMON RETIREMENT FUND

$14,974,183

0.17%

44,923

BERKSHIRE CAPITAL HOLDINGS INC

$14,759,852

0.17%

44,280

HARBOR CAPITAL ADVISORS, INC.

$14,331,523

0.16%

42,995

KORNITZER CAPITAL MANAGEMENT INC /KS

$14,328,190

0.16%

42,985

UNICOM Systems, Inc.

$13,733,196

0.16%

41,200

CITADEL ADVISORS LLC

$13,496,531

0.15%

40,490

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	29,974	$9,991,233	74.0%	Defined
Held directly	10,516	$3,505,298	26.0%	Defined

Melqart Asset Management (UK) Ltd

$12,942,537

0.15%

38,828

Kite Lake Capital Management (UK) LLP

$12,568,207

0.14%

37,705

Prospect Capital Advisors, LLC

$12,219,877

0.14%

36,660

Key facts CIK 1329394 CUSIP 82706C108 13F (30d) 6 filings 6 filers Visit website Investor relations