Vault-13

SILICON MOTION TECHNOLOGY CO SIMO

SPONSORED ADR · ADR · CUSIP 82706C108 · ISIN US82706C1080

American-Taiwanese electronics technology company

276 institutional holders +34 vs Q4 2025
26,903,77226.9m shares reported held*
$3.0bnreported value*
60 new 95 added 90 reduced 25 sold out net sold ≈ $27.3m (-220.2k 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 ($22.5m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $112.37. Options: 14 managers hold calls ($87.9m notional), 7 hold puts ($13.9m).

Trends to Q1 2026

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: 221Q4 25: 242Q1 26: 276276Q3 22Q3 23Q3 24Q3 25Q1 26
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
Q4 2025242
Q1 2026276

Buyers vs sellers

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

Bought or addedCut or sold out
2000200Q2 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 25Q4 25: 121 bought or addedQ4 25: 101 cut or sold outQ1 26: 155 bought or addedQ1 26: 115 cut or sold outQ1 26
Numbers
QuarterBought or addedCut or sold out
Q2 202413686
Q3 202496125
Q4 202498107
Q1 202510494
Q2 2025113100
Q3 2025109109
Q4 2025121101
Q1 2026155115

Calls vs puts

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

CallsPuts
$0$25m$50m$75m$100mQ2 25 calls: $36.1mQ2 25 puts: $22.9mQ2 25P/C 0.64Q3 25 calls: $58.7mQ3 25 puts: $54.4mQ3 25P/C 0.93Q4 25 calls: $24.9mQ4 25 puts: $14.3mQ4 25P/C 0.57Q1 26 calls: $87.9mQ1 26 puts: $13.9mQ1 26P/C 0.16
Numbers
QuarterCallsPutsP/C
Q2 2025$36.1m$22.9m0.64
Q3 2025$58.7m$54.4m0.93
Q4 2025$24.9m$14.3m0.57
Q1 2026$87.9m$13.9m0.16

Biggest buyers

Analog Century Management LP New +538,748+538.7k
HAWK RIDGE CAPITAL MANAGEMENT LP Added +385,568+385.6k
VOYA INVESTMENT MANAGEMENT LLC New +381,854+381.9k
Qube Research & Technologies Ltd Added +256,133+256.1k
MILLENNIUM MANAGEMENT LLC Added +248,759+248.8k
CastleKnight Management LP Added +241,239+241.2k
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Added +225,221+225.2k
AIGH Capital Management LLC New +200,000+200.0k
Driehaus Capital Management LLC Added +190,351+190.4k
LOOMIS SAYLES & CO L P New +188,653+188.7k

Biggest sellers

Pertento Partners LLP Reduced -738,875-738.9k
WELLINGTON MANAGEMENT GROUP LLP Reduced -392,713-392.7k
ADAGE CAPITAL PARTNERS GP, L.L.C. Reduced -316,975-317.0k
Think Investments LP Sold out -289,300-289.3k
REINHART PARTNERS, LLC. Reduced -259,316-259.3k
FRONTIER CAPITAL MANAGEMENT CO LLC Reduced -239,115-239.1k
Invesco Ltd. Reduced -213,820-213.8k
MANUFACTURERS LIFE INSURANCE COMPANY, THE Reduced -207,135-207.1k
CRAMER ROSENTHAL MCGLYNN LLC Sold out -143,604-143.6k
Clearline Capital LP Sold out -132,911-132.9k

Biggest calls

SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $20.5m182.2k shares
CastleKnight Management LP Added $20.2m180.0k shares
CloudAlpha Capital Management Limited/Hong Kong New $12.4m110.0k shares
JANE STREET GROUP, LLC Added $10.2m90.7k shares
IMC-Chicago, LLC Added $6.1m54.7k shares
SIMPLEX TRADING, LLC New $5.3m47.1k shares
CITADEL ADVISORS LLC Reduced $3.6m32.0k shares
GROUP ONE TRADING LLC Reduced $3.0m27.1k shares
TUDOR INVESTMENT CORP ET AL Added $2.3m20.5k shares
BOOTHBAY FUND MANAGEMENT, LLC New $2.0m17.9k shares

Biggest puts

SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $6.4m57.0k shares
JANE STREET GROUP, LLC Reduced $2.9m25.8k shares
CITADEL ADVISORS LLC Reduced $2.3m20.1k shares
IMC-Chicago, LLC New $1.6m14.4k shares
TWO SIGMA INVESTMENTS, LP Added $415.5k3.7k shares
Walleye Trading LLC Added $292.0k2.6k shares
SIMPLEX TRADING, LLC New $11.2k100 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 Q1 2026

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 Q1 2026.

Holders, Q1 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 FMR LLC 0.02% of their portfolio BOSTON, MA 3,398,3673.4m $381.6m $381.6m 0.02% Unchanged
2 REINHART PARTNERS, LLC. 4.24% of their portfolio MEQUON, WI 1,314,0391.3m $147.6m $147.6m 4.24% Reduced -259.3k -259,316
3 ACADIAN ASSET MANAGEMENT LLC 0.21% of their portfolio Boston, MA 1,293,7101.3m $145.2m $145.2m 0.21% Added +14.6k +14,623
4 HAWK RIDGE CAPITAL MANAGEMENT LP 4.79% of their portfolio LOS ANGELES, CA 1,173,3151.2m $131.8m $131.8m 4.79% Added +385.6k +385,568
5 LORD, ABBETT & CO. LLC 0.35% of their portfolio JERSEY CITY, NJ 962,139962.1k $108.0m $108.0m 0.35% Reduced -32.8k -32,838
6 LAZARD ASSET MANAGEMENT LLC 0.14% of their portfolio NEW YORK, NY 781,981782.0k $87.8m $87.8m 0.14% Added +23.4k +23,403
7 Robeco Institutional Asset Management B.V. 0.10% of their portfolio ROTTERDAM, P7 631,581631.6k $70.9m $70.9m 0.10% Added +7.6k +7,628
8 Wolf Hill Capital Management, LP 9.25% of their portfolio GREENWICH, CT 580,852580.9k $65.2m $65.2m 9.25% Reduced -518 -518
9 Man Group plc 0.13% of their portfolio LONDON, X0 560,103560.1k $62.9m $62.9m 0.13% Added +179.1k +179,055
10 Analog Century Management LP 2.89% of their portfolio NEW YORK, NY 538,748538.7k $60.5m $60.5m 2.89% New
11 Driehaus Capital Management LLC 0.42% of their portfolio Chicago, IL 509,975510.0k $57.3m $57.3m 0.42% Added +190.4k +190,351
12 SYSTEMATIC FINANCIAL MANAGEMENT LP 1.30% of their portfolio TEANECK, NJ 506,725506.7k $56.9m $56.9m 1.30% Reduced -76.1k -76,101
13 SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 2.37% of their portfolio Boston, MA 456,375456.4k $51.2m $51.2m 2.37% Reduced -78.6k -78,557
14 Kite Lake Capital Management (UK) LLP 51.27% of their portfolio LONDON, X0 452,574452.6k $50.8m $50.8m 51.27% Reduced -3.7k -3,697
15 HIGHLAND PEAK CAPITAL, LLC 21.74% of their portfolio OLD GREENWICH, CT 444,515444.5k $49.9m $49.9m 21.74% Reduced -52.1k -52,109
16 NEUMEIER POMA INVESTMENT COUNSEL LLC 3.96% of their portfolio CARMEL, CA 428,188428.2k $48.1m $48.1m 3.96% Reduced -53.6k -53,630
17 ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.03% of their portfolio BOSTON, MA 425,697425.7k $47.8m $47.8m 0.03% Added +225.2k +225,221
18 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 418,285418.3k $47.0m $47.0m 0.00% Reduced -213.8k -213,820
19 Pertento Partners LLP 4.92% of their portfolio LONDON, X0 412,536412.5k $46.3m $46.3m 4.92% Reduced -738.9k -738,875
20 MILLENNIUM MANAGEMENT LLC 0.03% of their portfolio NEW YORK, NY 395,789395.8k $44.4m $44.4m 0.03% Added +248.8k +248,759
21 UBS Group AG 0.01% of their portfolio ZURICH, V8 391,926391.9k $44.0m $44.0m 0.01% Added +40.4k +40,385
22 VOYA INVESTMENT MANAGEMENT LLC 0.04% of their portfolio ATLANTA, GA 381,854381.9k $42.9m $42.9m 0.04% New
23 HERALD INVESTMENT MANAGEMENT Ltd 5.75% of their portfolio LONDON, X0 367,700367.7k $41.3m $41.3m 5.75% Reduced -17.2k -17,206
24 Ophir Asset Management Pty Ltd 4.67% of their portfolio SYDNEY, C3 357,044357.0k $40.1m $40.1m 4.67% Reduced -110.5k -110,520
25 Qube Research & Technologies Ltd 0.06% of their portfolio LONDON, X0 351,522351.5k $39.5m $39.5m 0.06% Added +256.1k +256,133
26 CastleKnight Management LP 1.70% of their portfolio New York, NY 323,475323.5k $36.3m $36.3m 1.70% Added +241.2k +241,239
27 WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio Boston, MA 304,286304.3k $34.2m $34.2m 0.01% Reduced -392.7k -392,713
28 SCHWARTZ INVESTMENT COUNSEL INC 1.20% of their portfolio PLYMOUTH, MI 300,000300.0k $33.7m $33.7m 1.20% Added +80.0k +80,000
29 OBERWEIS ASSET MANAGEMENT INC/ 0.94% of their portfolio LISLE, IL 282,550282.6k $31.7m $31.7m 0.94% Added +46.2k +46,250
30 MARSHALL WACE, LLP 0.03% of their portfolio LONDON, X0 276,600276.6k $31.1m $31.1m 0.03% Added +143.9k +143,949
31 TWO SIGMA INVESTMENTS, LP 0.03% of their portfolio NEW YORK, NY 274,577274.6k $30.8m $30.8m 0.03% Reduced -105.3k -105,260
32 Boston Partners 0.03% of their portfolio BOSTON, MA 272,797272.8k $30.6m $30.6m 0.03% Reduced -111.0k -111,004
33 FRONTIER CAPITAL MANAGEMENT CO LLC 0.31% of their portfolio Boston, MA 272,356272.4k $30.6m $30.6m 0.31% Reduced -239.1k -239,115
34 HEARTLAND ADVISORS INC 1.44% of their portfolio MILWAUKEE, WI 252,084252.1k $28.3m $28.3m 1.44% Reduced -20.3k -20,314
35 Apis Capital Advisors, LLC 4.32% of their portfolio New York, NY 249,200249.2k $28.0m $28.0m 4.32% Added +35.1k +35,120
36 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 244,387244.4k $27.4m $27.4m 0.00% Added +61.0k +60,970
37 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 210,974211.0k $23.7m $23.7m 0.00% Reduced -53.9k -53,884
38 VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.09% of their portfolio JUPITER, FL 210,302210.3k $23.6m $23.6m 0.09% Added +97.8k +97,844
39 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.01% of their portfolio Boston, MA 210,294210.3k $23.8m $23.8m 0.01% Added +3.6k +3,578
40 Russell Investments Group, Ltd. 0.02% of their portfolio Seattle, WA 203,353203.4k $22.3m $22.3m 0.02% Added +4.6k +4,616
41 AIGH Capital Management LLC 4.60% of their portfolio BALTIMORE, MD 200,000200.0k $22.5m $22.5m 4.60% New
42 Granahan Investment Management, LLC 1.06% of their portfolio WALTHAM, MA 195,252195.3k $21.9m $21.9m 1.06% Reduced -33.9k -33,877
43 LOOMIS SAYLES & CO L P 0.03% of their portfolio BOSTON, MA 188,653188.7k $21.2m $21.2m 0.03% New
44 NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.03% of their portfolio PHILADELPHIA, PA 175,687175.7k $19.7m $19.7m 0.03% Added +66.6k +66,627
45 First Eagle Investment Management, LLC 0.03% of their portfolio NEW YORK, NY 168,439168.4k $18.9m $18.9m 0.03% Added +14.9k +14,920
46 FRED ALGER MANAGEMENT, LLC 0.08% of their portfolio NEW YORK, NY 160,891160.9k $18.1m $18.1m 0.08% New
47 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.02% of their portfolio Toronto, A6 157,665157.7k $17.7m $17.7m 0.02% Reduced -207.1k -207,135
48 Bahl & Gaynor LLC 0.09% of their portfolio CINCINNATI, OH 155,565155.6k $17.5m $17.5m 0.09% New
49 SCHRODER INVESTMENT MANAGEMENT GROUP 0.01% of their portfolio London, X0 138,585138.6k $14.6m $14.6m 0.01% Added +100.9k +100,865
50 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 124,980125.0k $14.0m $14.0m 0.00% Reduced -484 -484
51 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 117,028117.0k $13.1m $13.1m 0.00% Added +29.0k +29,012
52 ALPINE ASSOCIATES MANAGEMENT INC. 0.77% of their portfolio PALM BEACH, FL 116,878116.9k $13.1m $13.1m 0.77% Added +36.9k +36,902
53 KNIGHTSBRIDGE ASSET MANAGEMENT, LLC 1.72% of their portfolio NEWPORT BEACH, CA 113,554113.6k $12.8m $12.8m 1.72% Added +10.8k +10,825
54 SEI INVESTMENTS CO 0.01% of their portfolio OAKS, PA 109,073109.1k $12.2m $12.2m 0.01% Added +13.7k +13,677
55 ROYCE & ASSOCIATES LP 0.12% of their portfolio New York, NY 107,240107.2k $12.0m $12.0m 0.12% Added +14.7k +14,700
56 BLAIR WILLIAM & CO/IL 0.03% of their portfolio CHICAGO, IL 103,179103.2k $11.6m $11.6m 0.03% New
57 M&G PLC 0.05% of their portfolio London, X0 92,22992.2k $10.3m $10.3m 0.05% Reduced -110.6k -110,570
58 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 90,15390.2k $10.1m $10.1m 0.00% Reduced -887 -887
59 Strategic Wealth Partners, Ltd. 0.67% of their portfolio INDEPENDENCE, OH 86,17186.2k $9.7m $9.7m 0.67% Added +5.2k +5,243
60 Balyasny Asset Management L.P. 0.02% of their portfolio Chicago, IL 84,96885.0k $9.5m $9.5m 0.02% Reduced -57.6k -57,593
61 Prospect Capital Advisors, LLC 5.13% of their portfolio Sausalito, CA 82,24082.2k $9.2m $9.2m 5.13% Reduced -6.1k -6,110
62 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 80,39680.4k $9.0m $9.0m 0.00% Added +13.7k +13,675
63 Susquehanna Portfolio Strategies, LLC 0.13% of their portfolio Bala Cynwyd, PA 77,32277.3k $8.7m $8.7m 0.13% Unchanged
64 PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 0.03% of their portfolio DENVER, CO 77,00077.0k $8.6m $8.6m 0.03% New
65 BlackRock, Inc. 0.00% of their portfolio New York, NY 75,68075.7k $8.5m $8.5m 0.00% Added +5.5k +5,490
66 Walleye Capital LLC 0.05% of their portfolio NEW YORK, NY 73,46873.5k $8.2m $8.2m 0.05% Added +2.7k +2,725
67 ABN AMRO INVESTMENT SOLUTIONS 0.11% of their portfolio PARIS CEDEX 008, I0 73,11673.1k $8.2m $8.2m 0.11% Reduced -33.7k -33,735
68 Janney Montgomery Scott LLC 0.02% of their portfolio PHILADELPHIA, PA 72,96573.0k $8.2m $8.2m 0.02% Reduced -15.8k -15,810
69 NEUBERGER BERMAN GROUP LLC 0.01% of their portfolio NEW YORK, NY 71,95772.0k $8.1m $8.1m 0.01% New
70 RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio ST. PETERSBURG, FL 68,61768.6k $7.7m $7.7m 0.00% Added +29.7k +29,654
71 CITADEL ADVISORS LLC 0.01% of their portfolio MIAMI, FL 64,59064.6k $7.3m $7.3m 0.01% Reduced -68.5k -68,466
72 HARBOR CAPITAL ADVISORS, INC. 0.58% of their portfolio CHICAGO, IL 64,02464.0k $7.2m $7.2m 0.58% Reduced -4.5k -4,532
73 ODDO BHF ASSET MANAGEMENT SAS 0.27% of their portfolio PARIS, I0 60,00060.0k $6.7m $6.7m 0.27% Reduced -132.5k -132,500
74 SORA INVESTORS LLC 0.60% of their portfolio BRYN MAWR, PA 58,16658.2k $6.5m $6.5m 0.60% Reduced -70.1k -70,055
75 Melqart Asset Management (UK) Ltd 0.61% of their portfolio London, X0 55,12455.1k $6.2m $6.2m 0.61% Reduced -43.3k -43,293
76 ADAGE CAPITAL PARTNERS GP, L.L.C. 0.01% of their portfolio Boston, MA 54,68754.7k $6.1m $6.1m 0.01% Reduced -317.0k -316,975
77 OVERSEA-CHINESE BANKING Corp Ltd 0.17% of their portfolio SINGAPORE, U0 52,97753.0k $5.9m $5.9m 0.17% Reduced -22.7k -22,730
78 Tidal Investments LLC 0.02% of their portfolio Milwaukee, WI 49,44249.4k $5.6m $5.6m 0.02% Added +21.3k +21,324
79 Skylands Capital, LLC 0.72% of their portfolio Milwaukee, WI 49,16949.2k $5.5m $5.5m 0.72% Reduced -4.0k -4,050
80 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 49,03749.0k $5.5m $5.5m 0.00% Added +2.1k +2,110
81 Emerald Investment Advisers, LLC 0.49% of their portfolio LEOLA, PA 48,05948.1k $5.4m $5.4m 0.49% First filing
82 PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.02% of their portfolio COLUMBUS, OH 46,97847.0k $5.3m $5.3m 0.02% Added +5.8k +5,826
83 THAMES CAPITAL MANAGEMENT LLC 0.93% of their portfolio Roseland, NJ 46,34446.3k $5.2m $5.2m 0.93% New
84 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 43,34443.3k $4.9m $4.9m 0.00% Reduced -557 -557
85 KORNITZER CAPITAL MANAGEMENT INC /KS 0.10% of their portfolio SHAWNEE MISSION, KS 42,98543.0k $4.8m $4.8m 0.10% New
86 BOOTHBAY FUND MANAGEMENT, LLC 0.10% of their portfolio NEW YORK, NY 39,88639.9k $4.5m $4.5m 0.10% Reduced -23.2k -23,195
87 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 39,53039.5k $4.4m $4.4m 0.00% Added +2.8k +2,796
88 Y-Intercept (Hong Kong) Ltd 0.08% of their portfolio HONG KONG, K3 39,35039.4k $4.4m $4.4m 0.08% Added +30.0k +30,022
89 SCALAR GAUGE MANAGEMENT, LLC 4.22% of their portfolio DALLAS, TX 39,00039.0k $4.4m $4.4m 4.22% New
90 Jump Financial, LLC 0.06% of their portfolio Chicago, IL 36,80336.8k $4.1m $4.1m 0.06% Added +14.8k +14,803
91 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 36,41036.4k $4.1m $4.1m 0.00% Reduced -43.0k -42,980
92 NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio ALBANY, NY 36,01536.0k $4.0m $4.0m 0.01% Unchanged
93 Ramirez Asset Management, Inc. 0.61% of their portfolio NEW YORK, NY 32,38432.4k $5.1m $5.1m 0.61% Added +780 +780
94 FIRST TRUST ADVISORS LP 0.00% of their portfolio Wheaton, IL 28,59028.6k $3.2m $3.2m 0.00% Reduced -13.1k -13,129
95 CHASE INVESTMENT COUNSEL CORP 0.84% of their portfolio CHARLOTTESVILLE, VA 28,47228.5k $3.2m $3.2m 0.84% New
96 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 28,26828.3k $3.2m $3.2m 0.00% Reduced -9.7k -9,698
97 Polar Asset Management Partners Inc. 0.08% of their portfolio TORONTO, A6 28,21828.2k $3.2m $3.2m 0.08% New
98 Vident Advisory, LLC 0.03% of their portfolio Alpharetta, GA 27,50127.5k $3.1m $3.1m 0.03% Added +1.0k +1,049
99 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 27,20227.2k $3.1m $3.1m 0.00% Added +20.1k +20,108
100 Trexquant Investment LP 0.02% of their portfolio STAMFORD, CT 25,67625.7k $2.9m $2.9m 0.02% New