Vault-13

SILICON MOTION TECHNOLOGY CO SIMO

SPONSORED ADR · ADR · CUSIP 82706C108 · ISIN US82706C1080

American-Taiwanese electronics technology company

202 institutional holders
24,872,07024.9m shares reported held*
$1.6bnreported value*

* 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 ($3.6m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $65.24. Options: 13 managers hold calls ($44.5m notional), 12 hold puts ($66.7m).

Biggest calls

CITIGROUP INC — $31.0m475.0k shares
SIMPLEX TRADING, LLC — $3.8m58.9k shares
RAMIUS ADVISORS LLC — $2.4m150.0k shares
GROUP ONE TRADING LLC — $2.3m35.0k shares
Walleye Trading LLC — $2.0m31.4k shares
CITADEL ADVISORS LLC — $1.1m17.1k shares
WOLVERINE TRADING, LLC — $753.0k11.1k shares
JANE STREET GROUP, LLC — $567.0k8.7k shares
Aristides Capital LLC — $548.0k8.4k shares
HAP Trading, LLC — $19.0k25.8k shares

Biggest puts

Antara Capital LP — $32.6m500.4k shares
CITIGROUP INC — $31.0m475.0k shares
GROUP ONE TRADING LLC — $1.3m19.3k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP — $795.0k12.2k shares
JANE STREET GROUP, LLC — $515.0k7.9k shares
CITADEL ADVISORS LLC — $385.0k5.9k shares
SIMPLEX TRADING, LLC — $84.0k1.3k shares
HAP Trading, LLC — $64.0k31.0k shares
Walleye Trading LLC — $20.0k300 shares
HARVEST MANAGEMENT LLC — $13.0k200 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 2022

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 2022.

Holders, Q3 2022

#ManagerLocationShares Value% of their portfolioChangeShares change
1 GOLDMAN SACHS GROUP INC 0.03% of their portfolio NEW YORK, NY 1,399,2911.4m $91.2m $91.2m 0.03% —
2 OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) 0.86% of their portfolio CHICAGO, IL 1,150,5421.2m $75.0m $75.0m 0.86% —
3 MILLENNIUM MANAGEMENT LLC 0.09% of their portfolio NEW YORK, NY 1,088,7301.1m $71.0m $71.0m 0.09% —
4 Westchester Capital Management, LLC 2.10% of their portfolio VALHALLA, NY 1,073,2181.1m $70.0m $70.0m 2.10% —
5 Sand Grove Capital Management LLP 6.28% of their portfolio LONDON, X0 1,002,5591.0m $65.4m $65.4m 6.28% —
6 BANK OF AMERICA CORP /DE/ 0.01% of their portfolio CHARLOTTE, NC 977,885977.9k $63.7m $63.7m 0.01% —
7 FARALLON CAPITAL MANAGEMENT, L.L.C. 0.37% of their portfolio SAN FRANCISCO, CA 931,510931.5k $60.7m $60.7m 0.37% —
8 MANGROVE PARTNERS IM, LLC 2.97% of their portfolio Greenwich, CT 741,160741.2k $48.3m $48.3m 2.97% —
9 Grantham, Mayo, Van Otterloo & Co. LLC 0.27% of their portfolio Boston, MA 716,918716.9k $46.7m $46.7m 0.27% —
10 ADAGE CAPITAL PARTNERS GP, L.L.C. 0.11% of their portfolio Boston, MA 695,625695.6k $45.3m $45.3m 0.11% —
11 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 640,513640.5k $43.2m $43.2m 0.00% —
12 Antara Capital LP 4.01% of their portfolio New York, NY 555,750555.8k $36.2m $36.2m 4.01% —
13 SYSTEMATIC FINANCIAL MANAGEMENT LP 1.22% of their portfolio TEANECK, NJ 512,915512.9k $33.4m $33.4m 1.22% —
14 Erste Asset Management GmbH 0.74% of their portfolio VIENNA, C4 504,000504.0k $32.9m $32.9m 0.74% —
15 Melqart Asset Management (UK) Ltd 2.57% of their portfolio London, X0 470,524470.5k $30.7m $30.7m 2.57% —
16 CARDINAL CAPITAL MANAGEMENT LLC /CT 1.02% of their portfolio GREENWICH, CT 455,648455.6k $29.7m $29.7m 1.02% —
17 AQR Arbitrage LLC 0.63% of their portfolio Greenwich, CT 440,041440.0k $28.7m $28.7m 0.63% —
18 BAILLIE GIFFORD & CO 0.03% of their portfolio EDINBURGH, X0 436,228436.2k $28.4m $28.4m 0.03% —
19 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 411,706411.7k $26.8m $26.8m 0.00% —
20 ACADIAN ASSET MANAGEMENT LLC 0.14% of their portfolio Boston, MA 405,823405.8k $26.4m $26.4m 0.14% —
21 HERALD INVESTMENT MANAGEMENT Ltd 6.18% of their portfolio LONDON, X0 384,906384.9k $25.1m $25.1m 6.18% —
22 MARSHALL WACE, LLP 0.06% of their portfolio LONDON, X0 382,408382.4k $24.9m $24.9m 0.06% —
23 LAZARD ASSET MANAGEMENT LLC 0.03% of their portfolio NEW YORK, NY 354,294354.3k $23.1m $23.1m 0.03% —
24 ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio NASHVILLE, TN 351,388351.4k $22.9m $22.9m 0.01% —
25 WATER ISLAND CAPITAL LLC 1.26% of their portfolio NEW YORK, NY 341,941341.9k $22.3m $22.3m 1.26% —
26 ALPINE ASSOCIATES MANAGEMENT INC. 0.92% of their portfolio PALM BEACH, FL 340,766340.8k $22.2m $22.2m 0.92% —
27 Woodline Partners LP 0.29% of their portfolio San Francisco, CA 305,600305.6k $19.9m $19.9m 0.29% —
28 TIG Advisors, LLC 0.73% of their portfolio New York, NY 294,875294.9k $19.2m $19.2m 0.73% —
29 M&G INVESTMENT MANAGEMENT LTD 0.14% of their portfolio London, X0 264,841264.8k $17.2m $17.2m 0.14% —
30 LORD, ABBETT & CO. LLC 0.06% of their portfolio JERSEY CITY, NJ 249,349249.3k $16.3m $16.3m 0.06% —
31 HBK INVESTMENTS L P 0.40% of their portfolio DALLAS, TX 230,000230.0k $15.0m $15.0m 0.40% —
32 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 227,153227.2k $14.8m $14.8m 0.00% —
33 STATE OF WISCONSIN INVESTMENT BOARD 0.05% of their portfolio MADISON, WI 223,000223.0k $14.5m $14.5m 0.05% —
34 TUDOR INVESTMENT CORP ET AL 0.35% of their portfolio STAMFORD, CT 217,848217.8k $14.2m $14.2m 0.35% —
35 Taconic Capital Advisors LP 0.46% of their portfolio NEW YORK, NY 205,000205.0k $13.4m $13.4m 0.46% —
36 Balyasny Asset Management L.P. 0.05% of their portfolio Chicago, IL 195,330195.3k $12.7m $12.7m 0.05% —
37 Prospect Capital Advisors, LLC 6.60% of their portfolio Sausalito, CA 191,900191.9k $12.5m $12.5m 6.60% —
38 UBS Group AG 0.01% of their portfolio ZURICH, V8 169,308169.3k $11.0m $11.0m 0.01% —
39 KENNEDY CAPITAL MANAGEMENT LLC 0.31% of their portfolio ST LOUIS, MO 163,727163.7k $10.7m $10.7m 0.31% —
40 RICE HALL JAMES & ASSOCIATES, LLC 0.58% of their portfolio San Diego, CA 153,983154.0k $10.0m $10.0m 0.58% —
41 Maven Securities LTD 0.96% of their portfolio ST HELIER, Y9 150,000150.0k $9.8m $9.8m 0.96% —
42 Berry Street Capital Management LLP 3.31% of their portfolio LONDON, X0 150,000150.0k $9.8m $9.8m 3.31% —
43 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.02% of their portfolio BALA CYNWYD, PA 144,979145.0k $9.5m $9.5m 0.02% —
44 Bahl & Gaynor LLC 0.06% of their portfolio CINCINNATI, OH 138,287138.3k $9.0m $9.0m 0.06% —
45 CITIGROUP INC 0.01% of their portfolio NEW YORK, NY 136,324136.3k $8.9m $8.9m 0.01% —
46 RAMIUS ADVISORS LLC 4.37% of their portfolio NEW YORK, NY 131,940131.9k $8.6m $8.6m 4.37% —
47 PEREGRINE CAPITAL MANAGEMENT LLC 0.25% of their portfolio MINNEAPOLIS, MN 119,309119.3k $7.8m $7.8m 0.25% —
48 WESTFIELD CAPITAL MANAGEMENT CO LP 0.06% of their portfolio BOSTON, MA 116,125116.1k $7.6m $7.6m 0.06% —
49 AIGH Capital Management LLC 2.94% of their portfolio BALTIMORE, MD 114,400114.4k $7.5m $7.5m 2.94% —
50 Penn Capital Management Company, LLC 0.83% of their portfolio PHILADELPHIA, PA 114,134114.1k $7.5m $7.5m 0.83% —
51 Segantii Capital Management Ltd 0.26% of their portfolio HONG KONG, K3 113,000113.0k $7.4m $7.4m 0.26% —
52 Man Group plc 0.03% of their portfolio LONDON, X0 110,575110.6k $7.2m $7.2m 0.03% —
53 LMR Partners LLP 0.15% of their portfolio LONDON, X0 110,000110.0k $7.2m $7.2m 0.15% —
54 EASTERLY INVESTMENT PARTNERS LLC 0.66% of their portfolio BEVERLY, MA 104,808104.8k $6.8m $6.8m 0.66% —
55 THOMAS WHITE INTERNATIONAL LTD 1.53% of their portfolio CHICAGO, IL 100,355100.4k $6.5m $6.5m 1.53% —
56 Hudson Bay Capital Management LP 0.06% of their portfolio STAMFORD, CT 94,39694.4k $6.2m $6.2m 0.06% —
57 Qube Research & Technologies Ltd 0.04% of their portfolio LONDON, X0 90,43990.4k $5.9m $5.9m 0.04% —
58 DLD Asset Management, LP 0.52% of their portfolio NEW YORK, NY 88,00088.0k $5.7m $5.7m 0.52% —
59 Apis Capital Advisors, LLC 8.32% of their portfolio New York, NY 85,00085.0k $5.5m $5.5m 8.32% —
60 Russell Investments Group, Ltd. 0.01% of their portfolio Seattle, WA 83,61283.6k $5.5m $5.5m 0.01% —
61 NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio ALBANY, NY 78,63778.6k $5.1m $5.1m 0.01% —
62 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 78,13978.1k $5.1m $5.1m 0.00% —
63 RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio NEW YORK, NY 75,00075.0k $4.9m $4.9m 0.01% —
64 PRELUDE CAPITAL MANAGEMENT, LLC 0.24% of their portfolio NEW YORK, NY 74,79574.8k $4.9m $4.9m 0.24% —
65 Fort Baker Capital Management LP 0.78% of their portfolio Larkspur, CA 74,19474.2k $4.8m $4.8m 0.78% —
66 JANE STREET GROUP, LLC 0.01% of their portfolio NEW YORK, NY 71,29871.3k $4.6m $4.6m 0.01% —
67 MACQUARIE GROUP LTD 0.01% of their portfolio Sydney, NSW 2000, C3 70,24270.2k $4.6m $4.6m 0.01% —
68 Hodges Capital Management Inc. 0.73% of their portfolio DALLAS, TX 68,06768.1k $4.4m $4.4m 0.73% —
69 TWO SIGMA ADVISERS, LP 0.01% of their portfolio NEW YORK, NY 67,78167.8k $4.4m $4.4m 0.01% —
70 NAPLES GLOBAL ADVISORS, LLC 0.59% of their portfolio NAPLES, FL 65,46365.5k $4.3m $4.3m 0.59% —
71 Janney Montgomery Scott LLC 0.02% of their portfolio PHILADELPHIA, PA 64,18564.2k $4.2m $4.2m 0.02% —
72 Nokomis Capital, L.L.C. 1.75% of their portfolio DALLAS, TX 60,07360.1k $3.9m $3.9m 1.75% —
73 SEI INVESTMENTS CO 0.01% of their portfolio OAKS, PA 58,27358.3k $3.8m $3.8m 0.01% —
74 Alberta Investment Management Corp 0.03% of their portfolio EDMONTON, A0 54,90054.9k $3.6m $3.6m 0.03% —
75 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 51,13651.1k $3.3m $3.3m 0.00% —
76 Ovata Capital Management Ltd 1.22% of their portfolio HONG KONG, K3 50,60550.6k $3.3m $3.3m 1.22% —
77 Alpine Global Management, LLC 0.76% of their portfolio NEW YORK, NY 50,00050.0k $3.3m $3.3m 0.76% —
78 BOOTHBAY FUND MANAGEMENT, LLC 0.09% of their portfolio NEW YORK, NY 45,52645.5k $3.0m $3.0m 0.09% —
79 Strategic Wealth Partners, Ltd. 0.61% of their portfolio INDEPENDENCE, OH 44,44444.4k $2.9m $2.9m 0.61% —
80 Cullen Capital Management, LLC 0.03% of their portfolio New York, NY 40,48240.5k $2.6m $2.6m 0.03% —
81 EHP Funds Inc. 0.57% of their portfolio TORONTO, Z4 40,00040.0k $2.6m $2.6m 0.57% —
82 OAK ASSOCIATES LTD /OH/ 0.22% of their portfolio AKRON, OH 39,26939.3k $2.6m $2.6m 0.22% —
83 Ashfield Capital Partners, LLC 0.21% of their portfolio San Francisco, CA 38,88038.9k $2.5m $2.5m 0.21% —
84 J.P. Morgan Private Wealth Advisors LLC 0.01% of their portfolio SAN FRANCISCO, CA 38,36138.4k $2.5m $2.5m 0.01% —
85 MASO CAPITAL PARTNERS Ltd 0.56% of their portfolio HONG KONG, K3 36,81436.8k $2.4m $2.4m 0.56% —
86 TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio NEW YORK, NY 35,38935.4k $2.3m $2.3m 0.01% —
87 K2 PRINCIPAL FUND, L.P. 0.53% of their portfolio TORONTO, A6 34,15034.1k $2.2m $2.2m 0.53% —
88 Virtus Family Office LLC 5.66% of their portfolio EL PASO, TX 33,94833.9k $2.2m $2.2m 5.66% —
89 Handelsbanken Fonder AB 0.01% of their portfolio STOCKHOLM, V7 33,90033.9k $2.2m $2.2m 0.01% —
90 Advisors Asset Management, Inc. 0.04% of their portfolio Monument, CO 33,82733.8k $2.2m $2.2m 0.04% —
91 Aristides Capital LLC 1.88% of their portfolio LOUISVILLE, KY 33,65633.7k $2.2m $2.2m 1.88% —
92 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 33,62833.6k $2.2m $2.2m 0.00% —
93 Hiddenite Capital Partners LP 3.10% of their portfolio NEW YORK, NY 32,60032.6k $2.1m $2.1m 3.10% —
94 Millrace Asset Group, Inc. 2.65% of their portfolio BERWYN, PA 32,18632.2k $2.1m $2.1m 2.65% —
95 Legal & General Group Plc 0.00% of their portfolio London, X0 30,87930.9k $2.0m $2.0m 0.00% —
96 Weiss Asset Management LP 0.05% of their portfolio BOSTON, MA 30,00330.0k $2.0m $2.0m 0.05% —
97 Channing Global Advisors, LLC 2.41% of their portfolio Miami, FL 29,06229.1k $1.9m $1.9m 2.41% —
98 Worth Venture Partners, LLC 1.17% of their portfolio FORT LEE, NJ 28,83528.8k $1.9m $1.9m 1.17% —
99 Aperture Investors, LLC 0.30% of their portfolio New York, NY 27,77727.8k $1.8m $1.8m 0.30% —
100 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 27,58127.6k $1.8m $1.8m 0.00% —