Vault-13

SILICON MOTION TECHNOLOGY CO SIMO

SPONSORED ADR · ADR · CUSIP 82706C108 · ISIN US82706C1080

American-Taiwanese electronics technology company

221 institutional holders +7 vs Q2 2025
27,178,06727.2m shares reported held*
$2.6bnreported value*
40 new 69 added 79 reduced 30 sold out net sold ≈ $92.1m (-1.0m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($20.6m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $94.89. Options: 9 managers hold calls ($58.7m notional), 8 hold puts ($54.4m).

Trends to Q3 2025

Institutional holders

Managers reporting a position, each quarter

0100200300Q3 22: 202Q4 22: 198Q1 23: 198Q2 23: 203Q3 23: 195Q4 23: 206Q1 24: 213Q2 24: 236Q3 24: 204Q4 24: 204Q1 25: 192Q2 25: 214Q3 25: 221221Q3 22Q2 23Q1 24Q4 24Q3 25
Numbers
QuarterHolders
Q3 2022202
Q4 2022198
Q1 2023198
Q2 2023203
Q3 2023195
Q4 2023206
Q1 2024213
Q2 2024236
Q3 2024204
Q4 2024204
Q1 2025192
Q2 2025214
Q3 2025221

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
2000200Q4 23: 121 bought or addedQ4 23: 90 cut or sold outQ1 24: 117 bought or addedQ1 24: 103 cut or sold outQ1 24Q2 24: 136 bought or addedQ2 24: 86 cut or sold outQ3 24: 96 bought or addedQ3 24: 125 cut or sold outQ3 24Q4 24: 98 bought or addedQ4 24: 107 cut or sold outQ1 25: 104 bought or addedQ1 25: 94 cut or sold outQ1 25Q2 25: 113 bought or addedQ2 25: 100 cut or sold outQ3 25: 109 bought or addedQ3 25: 109 cut or sold outQ3 25
Numbers
QuarterBought or addedCut or sold out
Q4 202312190
Q1 2024117103
Q2 202413686
Q3 202496125
Q4 202498107
Q1 202510494
Q2 2025113100
Q3 2025109109

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$20m$40m$60mQ4 24 calls: $44.6mQ4 24 puts: $15.1mQ4 24P/C 0.34Q1 25 calls: $23.5mQ1 25 puts: $9.4mQ1 25P/C 0.40Q2 25 calls: $36.1mQ2 25 puts: $22.9mQ2 25P/C 0.64Q3 25 calls: $58.7mQ3 25 puts: $54.4mQ3 25P/C 0.93
Numbers
QuarterCallsPutsP/C
Q4 2024$44.6m$15.1m0.34
Q1 2025$23.5m$9.4m0.40
Q2 2025$36.1m$22.9m0.64
Q3 2025$58.7m$54.4m0.93

Biggest buyers

FMR LLC Added +654,346+654.3k
Driehaus Capital Management LLC Added +243,257+243.3k
HAWK RIDGE CAPITAL MANAGEMENT LP Added +155,817+155.8k
Ophir Asset Management Pty Ltd Added +140,893+140.9k
Robeco Institutional Asset Management B.V. Added +135,627+135.6k
ARDSLEY ADVISORY PARTNERS LP New +133,000+133.0k
MILLENNIUM MANAGEMENT LLC Added +88,146+88.1k
Granahan Investment Management, LLC Added +77,667+77.7k
UBS Group AG Added +66,526+66.5k
ROYCE & ASSOCIATES LP New +65,500+65.5k

Biggest sellers

Point72 Asset Management, L.P. Reduced -364,354-364.4k
FRONTIER CAPITAL MANAGEMENT CO LLC Reduced -238,021-238.0k
SORA INVESTORS LLC Reduced -233,901-233.9k
Boston Partners Reduced -196,181-196.2k
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Reduced -155,723-155.7k
WELLINGTON MANAGEMENT GROUP LLP Reduced -154,044-154.0k
ADAGE CAPITAL PARTNERS GP, L.L.C. Reduced -150,748-150.7k
MANUFACTURERS LIFE INSURANCE COMPANY, THE Reduced -141,779-141.8k
HARBOR CAPITAL ADVISORS, INC. Reduced -135,459-135.5k
SG Capital Management LLC Sold out -113,851-113.9k

Biggest calls

SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $15.6m164.5k shares
JANE STREET GROUP, LLC Added $12.4m130.3k shares
GROUP ONE TRADING LLC Reduced $11.3m119.4k shares
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC New $6.4m67.0k shares
SIMPLEX TRADING, LLC Added $4.4m46.0k shares
CITADEL ADVISORS LLC Added $3.6m37.6k shares
IMC-Chicago, LLC Added $2.9m30.5k shares
Walleye Trading LLC Added $1.9m20.4k shares
WOLVERINE TRADING, LLC Reduced $337.6k3.6k shares

Biggest puts

SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC New $21.3m225.0k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $11.8m124.4k shares
Walleye Trading LLC Reduced $6.2m65.2k shares
SIMPLEX TRADING, LLC Added $6.2m64.9k shares
JANE STREET GROUP, LLC Reduced $3.2m33.5k shares
GROUP ONE TRADING LLC Added $2.1m22.5k shares
AMERIPRISE FINANCIAL INC New $1.9m19.8k shares
CITADEL ADVISORS LLC Reduced $1.7m18.4k shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
FMR LLC 13G · institution -3.3 pts · filed 2026-08-06 6.7% -3.3 pts 9.1m 2026-08-06

Insider purchases and sales in Q3 2025

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

None reported in Q3 2025.

Holders, Q3 2025

#ManagerLocationShares Value% of their portfolioChangeShares change
1 FMR LLC 0.02% of their portfolio BOSTON, MA 3,398,3593.4m $322.2m $322.2m 0.02% Added +654.3k +654,346
2 REINHART PARTNERS, LLC. 4.63% of their portfolio MEQUON, WI 1,500,9341.5m $142.3m $142.3m 4.63% Added +29.4k +29,351
3 ACADIAN ASSET MANAGEMENT LLC 0.22% of their portfolio Boston, MA 1,301,6661.3m $123.4m $123.4m 0.22% Reduced -8.7k -8,687
4 Pertento Partners LLP 14.90% of their portfolio LONDON, X0 1,290,4091.3m $122.3m $122.3m 14.90% Added +31.4k +31,405
5 LORD, ABBETT & CO. LLC 0.32% of their portfolio JERSEY CITY, NJ 1,134,6841.1m $107.6m $107.6m 0.32% Reduced -113.8k -113,842
6 FRONTIER CAPITAL MANAGEMENT CO LLC 0.89% of their portfolio Boston, MA 1,043,0941.0m $98.9m $98.9m 0.89% Reduced -238.0k -238,021
7 Invesco Ltd. 0.01% of their portfolio ATLANTA, GA 905,910905.9k $85.9m $85.9m 0.01% Reduced -39 -39
8 LAZARD ASSET MANAGEMENT LLC 0.10% of their portfolio NEW YORK, NY 783,663783.7k $74.3m $74.3m 0.10% Added +17.7k +17,741
9 Point72 Asset Management, L.P. 0.14% of their portfolio STAMFORD, CT 700,048700.0k $66.4m $66.4m 0.14% Reduced -364.4k -364,354
10 WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio Boston, MA 695,956696.0k $66.0m $66.0m 0.01% Reduced -154.0k -154,044
11 Erste Asset Management GmbH 0.60% of their portfolio VIENNA, C4 664,000664.0k $62.3m $62.3m 0.60% Unchanged
12 SYSTEMATIC FINANCIAL MANAGEMENT LP 1.36% of their portfolio TEANECK, NJ 588,317588.3k $55.8m $55.8m 1.36% Reduced -9.2k -9,155
13 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.02% of their portfolio Boston, MA 586,655586.7k $55.6m $55.6m 0.02% Reduced -155.7k -155,723
14 SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 1.72% of their portfolio Boston, MA 558,005558.0k $52.9m $52.9m 1.72% Added +44.1k +44,068
15 Boston Partners 0.05% of their portfolio BOSTON, MA 539,416539.4k $51.1m $51.1m 0.05% Reduced -196.2k -196,181
16 Ophir Asset Management Pty Ltd 5.92% of their portfolio SYDNEY, C3 505,462505.5k $47.9m $47.9m 5.92% Added +140.9k +140,893
17 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.04% of their portfolio Toronto, A6 505,134505.1k $47.9m $47.9m 0.04% Reduced -141.8k -141,779
18 NEUMEIER POMA INVESTMENT COUNSEL LLC 3.71% of their portfolio CARMEL, CA 478,463478.5k $45.4m $45.4m 3.71% Added +46.2k +46,208
19 ADAGE CAPITAL PARTNERS GP, L.L.C. 0.07% of their portfolio Boston, MA 446,166446.2k $42.3m $42.3m 0.07% Reduced -150.7k -150,748
20 Robeco Institutional Asset Management B.V. 0.06% of their portfolio ROTTERDAM, P7 442,747442.7k $42.0m $42.0m 0.06% Added +135.6k +135,627
21 HERALD INVESTMENT MANAGEMENT Ltd 4.85% of their portfolio LONDON, X0 384,906384.9k $36.4m $36.4m 4.85% Unchanged
22 HIGHLAND PEAK CAPITAL, LLC 13.35% of their portfolio OLD GREENWICH, CT 375,885375.9k $35.6m $35.6m 13.35% Added +30.5k +30,487
23 HAWK RIDGE CAPITAL MANAGEMENT LP 1.68% of their portfolio LOS ANGELES, CA 372,747372.7k $35.3m $35.3m 1.68% Added +155.8k +155,817
24 Kite Lake Capital Management (UK) LLP 41.05% of their portfolio LONDON, X0 364,951365.0k $34.6m $34.6m 41.05% Reduced -26.6k -26,577
25 HEARTLAND ADVISORS INC 1.78% of their portfolio MILWAUKEE, WI 355,770355.8k $33.7m $33.7m 1.78% Reduced -46.0k -45,962
26 Driehaus Capital Management LLC 0.22% of their portfolio Chicago, IL 330,908330.9k $31.4m $31.4m 0.22% Added +243.3k +243,257
27 Think Investments LP 3.63% of their portfolio San Francisco, CA 289,300289.3k $27.4m $27.4m 3.63% Reduced -60.1k -60,100
28 Apis Capital Advisors, LLC 5.99% of their portfolio New York, NY 286,000286.0k $27.1m $27.1m 5.99% Added +30.0k +30,000
29 UBS Group AG 0.00% of their portfolio ZURICH, V8 252,993253.0k $24.0m $24.0m 0.00% Added +66.5k +66,526
30 ALPINE ASSOCIATES MANAGEMENT INC. 1.43% of their portfolio PALM BEACH, FL 247,450247.4k $23.5m $23.5m 1.43% Reduced -84.6k -84,555
31 Russell Investments Group, Ltd. 0.03% of their portfolio Seattle, WA 245,400245.4k $23.2m $23.2m 0.03% Reduced -22.9k -22,879
32 OBERWEIS ASSET MANAGEMENT INC/ 0.84% of their portfolio LISLE, IL 230,600230.6k $21.9m $21.9m 0.84% Unchanged
33 SCHWARTZ INVESTMENT COUNSEL INC 0.70% of their portfolio PLYMOUTH, MI 220,000220.0k $20.9m $20.9m 0.70% Unchanged
34 ODDO BHF ASSET MANAGEMENT SAS 0.78% of their portfolio PARIS, I0 217,500217.5k $20.6m $20.6m 0.78% Unchanged
35 MILLENNIUM MANAGEMENT LLC 0.02% of their portfolio NEW YORK, NY 213,188213.2k $20.2m $20.2m 0.02% Added +88.1k +88,146
36 Granahan Investment Management, LLC 0.81% of their portfolio WALTHAM, MA 207,758207.8k $19.7m $19.7m 0.81% Added +77.7k +77,667
37 M&G PLC 0.09% of their portfolio London, X0 181,044181.0k $17.2m $17.2m 0.09% Reduced -82.1k -82,140
38 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 180,992181.0k $17.2m $17.2m 0.00% Reduced -87.1k -87,103
39 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 178,153178.2k $16.9m $16.9m 0.00% Reduced -7.4k -7,443
40 Clearline Capital LP 1.39% of their portfolio NEW YORK, NY 169,677169.7k $16.1m $16.1m 1.39% Reduced -57.9k -57,924
41 First Eagle Investment Management, LLC 0.03% of their portfolio NEW YORK, NY 150,487150.5k $14.3m $14.3m 0.03% Added +4.3k +4,287
42 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 136,935136.9k $13.0m $13.0m 0.00% Reduced -1.5k -1,548
43 ARDSLEY ADVISORY PARTNERS LP 1.93% of their portfolio Norwalk, CT 133,000133.0k $12.6m $12.6m 1.93% New
44 Balyasny Asset Management L.P. 0.02% of their portfolio Chicago, IL 127,307127.3k $12.1m $12.1m 0.02% Added +28.0k +27,974
45 EASTERLY INVESTMENT PARTNERS LLC 0.80% of their portfolio BEVERLY, MA 124,025124.0k $11.8m $11.8m 0.80% Reduced -77.3k -77,335
46 Polar Asset Management Partners Inc. 0.23% of their portfolio TORONTO, A6 120,840120.8k $11.5m $11.5m 0.23% Reduced -84.9k -84,911
47 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 109,951110.0k $10.4m $10.4m 0.00% Reduced -4.9k -4,889
48 Melqart Asset Management (UK) Ltd 1.34% of their portfolio London, X0 106,171106.2k $10.1m $10.1m 1.34% Added +48.2k +48,227
49 KNIGHTSBRIDGE ASSET MANAGEMENT, LLC 1.62% of their portfolio NEWPORT BEACH, CA 101,105101.1k $9.6m $9.6m 1.62% Reduced -1.9k -1,902
50 Concentric Capital Strategies, LP 0.45% of their portfolio Stamford, CT 98,89598.9k $9.4m $9.4m 0.45% Added +24.6k +24,594
51 SummitTX Capital, L.P. 0.39% of their portfolio FORT WORTH, TX 98,06798.1k $9.3m $9.3m 0.39% Reduced -82.0k -81,972
52 Janney Montgomery Scott LLC 0.02% of their portfolio PHILADELPHIA, PA 88,62988.6k $8.4m $8.4m 0.02% Added +2.0k +1,994
53 Prospect Capital Advisors, LLC 4.34% of their portfolio Sausalito, CA 88,35088.3k $8.4m $8.4m 4.34% Reduced -40.0k -40,000
54 ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio BOSTON, MA 86,31286.3k $8.2m $8.2m 0.01% Added +12.3k +12,259
55 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 80,22480.2k $7.6m $7.6m 0.00% Added +23.7k +23,696
56 BlackRock, Inc. 0.00% of their portfolio New York, NY 78,88078.9k $7.5m $7.5m 0.00% Added +20.6k +20,582
57 D. E. Shaw & Co., Inc. 0.01% of their portfolio New York, NY 78,56878.6k $7.4m $7.4m 0.01% Reduced -23.9k -23,927
58 Cinctive Capital Management LP 0.37% of their portfolio New York, NY 77,96878.0k $7.4m $7.4m 0.37% Reduced -16.9k -16,912
59 TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio NEW YORK, NY 77,36177.4k $7.3m $7.3m 0.01% Added +57.0k +57,015
60 Susquehanna Portfolio Strategies, LLC 0.12% of their portfolio Bala Cynwyd, PA 77,32277.3k $7.3m $7.3m 0.12% Unchanged
61 CITADEL ADVISORS LLC 0.01% of their portfolio MIAMI, FL 72,75172.8k $6.9m $6.9m 0.01% Reduced -47.0k -46,955
62 SORA INVESTORS LLC 0.63% of their portfolio BRYN MAWR, PA 71,53471.5k $6.8m $6.8m 0.63% Reduced -233.9k -233,901
63 HARBOR CAPITAL ADVISORS, INC. 0.50% of their portfolio CHICAGO, IL 67,26267.3k $6.4m $6.4m 0.50% Reduced -135.5k -135,459
64 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 65,69765.7k $6.2m $6.2m 0.00% Added +659 +659
65 ROYCE & ASSOCIATES LP 0.06% of their portfolio New York, NY 65,50065.5k $6.2m $6.2m 0.06% New
66 SEI INVESTMENTS CO 0.01% of their portfolio OAKS, PA 61,21961.2k $5.8m $5.8m 0.01% Reduced -3.7k -3,733
67 MARSHALL WACE, LLP 0.01% of their portfolio LONDON, X0 55,40555.4k $5.3m $5.3m 0.01% Added +12.9k +12,944
68 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 53,65953.7k $5.1m $5.1m 0.00% Reduced -91.2k -91,175
69 Potrero Capital Research LLC 1.49% of their portfolio SAN FRANCISCO, CA 51,85851.9k $4.9m $4.9m 1.49% New
70 F/m Investments LLC 0.18% of their portfolio WASHINGTON, DC 50,31450.3k $4.8m $4.8m 0.18% Reduced -433 -433
71 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 49,24049.2k $4.7m $4.7m 0.00% Added +5.9k +5,904
72 BOOTHBAY FUND MANAGEMENT, LLC 0.12% of their portfolio NEW YORK, NY 48,59948.6k $4.6m $4.6m 0.12% Reduced -7.4k -7,386
73 FIRST TRUST ADVISORS LP 0.00% of their portfolio Wheaton, IL 43,96144.0k $4.2m $4.2m 0.00% Reduced -8.7k -8,695
74 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 41,42541.4k $3.9m $3.9m 0.00% Added +3.6k +3,619
75 Man Group plc 0.01% of their portfolio LONDON, X0 41,38541.4k $3.9m $3.9m 0.01% New
76 ABN AMRO INVESTMENT SOLUTIONS 0.08% of their portfolio PARIS CEDEX 008, I0 41,18141.2k $3.9m $3.9m 0.08% Reduced -14.4k -14,450
77 PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.01% of their portfolio COLUMBUS, OH 41,15241.2k $3.9m $3.9m 0.01% Unchanged
78 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 40,40140.4k $3.8m $3.8m 0.00% Reduced -28.9k -28,855
79 1492 Capital Management LLC 1.55% of their portfolio MILWAUKEE, WI 40,36640.4k $3.8m $3.8m 1.55% Added +4.2k +4,155
80 Skylands Capital, LLC 0.51% of their portfolio Milwaukee, WI 38,59438.6k $3.7m $3.7m 0.51% Reduced -13.4k -13,406
81 OSTERWEIS CAPITAL MANAGEMENT INC 0.16% of their portfolio SAN FRANCISCO, CA 37,96038.0k $3.6m $3.6m 0.16% New
82 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 36,01536.0k $3.4m $3.4m 0.00% Unchanged
83 Ramirez Asset Management, Inc. 0.44% of their portfolio NEW YORK, NY 33,26333.3k $3.2m $3.2m 0.44% Reduced -40.7k -40,749
84 OAK ASSOCIATES LTD /OH/ 0.19% of their portfolio AKRON, OH 32,88432.9k $3.1m $3.1m 0.19% Reduced -166 -166
85 VAN ECK ASSOCIATES CORP 0.00% of their portfolio NEW YORK, NY 31,98632.0k $3.0m $3.0m 0.00% Added +17.3k +17,262
86 Vident Advisory, LLC 0.03% of their portfolio Alpharetta, GA 28,13028.1k $2.7m $2.7m 0.03% Reduced -1.2k -1,170
87 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 27,82627.8k $2.2m $2.2m 0.00% Added +18.4k +18,427
88 Jain Global LLC 0.03% of their portfolio NEW YORK, NY 26,00726.0k $2.5m $2.5m 0.03% Reduced -51.6k -51,606
89 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 23,18123.2k $2.2m $2.2m 0.00% Added +13.2k +13,181
90 GAMCO INVESTORS, INC. ET AL 0.02% of their portfolio GREENWICH, CT 22,58922.6k $2.1m $2.1m 0.02% Reduced -3.6k -3,639
91 Cerity Partners LLC 0.00% of their portfolio NEW YORK, NY 22,32322.3k $2.1m $2.1m 0.00% Reduced -7.9k -7,910
92 KENNEDY CAPITAL MANAGEMENT LLC 0.05% of their portfolio ST LOUIS, MO 22,11922.1k $2.1m $2.1m 0.05% Added +8.6k +8,599
93 Tidal Investments LLC 0.01% of their portfolio Milwaukee, WI 21,25021.2k $2.0m $2.0m 0.01% Added +13.2k +13,228
94 Point72 Asia (Singapore) Pte. Ltd. 0.31% of their portfolio SINGAPORE, U0 21,18821.2k $2.0m $2.0m 0.31% New
95 Walleye Trading LLC 0.03% of their portfolio NEW YORK, NY 20,55320.6k $1.9m $1.9m 0.03% Added +8.8k +8,847
96 VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio San Antonio, TX 19,35019.4k $1.8m $1.8m 0.00% New
97 QUADRANT CAPITAL GROUP LLC 0.06% of their portfolio CINCINNATI, OH 18,58118.6k $1.8m $1.8m 0.06% Added +15.8k +15,773
98 NAPLES GLOBAL ADVISORS, LLC 0.13% of their portfolio NAPLES, FL 17,94017.9k $1.7m $1.7m 0.13% Added +260 +260
99 TEALWOOD ASSET MANAGEMENT INC 0.68% of their portfolio Minneapolis, MN 17,82517.8k $1.7m $1.7m 0.68% Reduced -744 -744
100 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 17,26817.3k $1.6m $1.6m 0.00% Added +12.7k +12,716