SILICON MOTION TECHNOLOGY CO SIMO
SPONSORED ADR · ADR · CUSIP 82706C108 · ISIN US82706C1080
American-Taiwanese electronics technology company
- SectorTechnology
- IndustrySemiconductors & Related Devices
- HeadquartersTaiwan, Taiwan
- Founded1995
- Websitesiliconmotion.com
- FilingsSEC EDGAR
* 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
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 202 |
| Q4 2022 | 198 |
| Q1 2023 | 198 |
| Q2 2023 | 203 |
| Q3 2023 | 195 |
| Q4 2023 | 206 |
| Q1 2024 | 213 |
| Q2 2024 | 236 |
| Q3 2024 | 204 |
| Q4 2024 | 204 |
| Q1 2025 | 192 |
| Q2 2025 | 214 |
| Q3 2025 | 221 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2023 | 121 | 90 |
| Q1 2024 | 117 | 103 |
| Q2 2024 | 136 | 86 |
| Q3 2024 | 96 | 125 |
| Q4 2024 | 98 | 107 |
| Q1 2025 | 104 | 94 |
| Q2 2025 | 113 | 100 |
| Q3 2025 | 109 | 109 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q4 2024 | $44.6m | $15.1m | 0.34 |
| Q1 2025 | $23.5m | $9.4m | 0.40 |
| Q2 2025 | $36.1m | $22.9m | 0.64 |
| Q3 2025 | $58.7m | $54.4m | 0.93 |
Biggest buyers
| FMR LLC | Added | +654.3k |
| Driehaus Capital Management LLC | Added | +243.3k |
| HAWK RIDGE CAPITAL MANAGEMENT LP | Added | +155.8k |
| Ophir Asset Management Pty Ltd | Added | +140.9k |
| Robeco Institutional Asset Management B.V. | Added | +135.6k |
| ARDSLEY ADVISORY PARTNERS LP | New | +133.0k |
| MILLENNIUM MANAGEMENT LLC | Added | +88.1k |
| Granahan Investment Management, LLC | Added | +77.7k |
| UBS Group AG | Added | +66.5k |
| ROYCE & ASSOCIATES LP | New | +65.5k |
Biggest sellers
| Point72 Asset Management, L.P. | Reduced | -364.4k |
| FRONTIER CAPITAL MANAGEMENT CO LLC | Reduced | -238.0k |
| SORA INVESTORS LLC | Reduced | -233.9k |
| Boston Partners | Reduced | -196.2k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Reduced | -155.7k |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -154.0k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Reduced | -150.7k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | Reduced | -141.8k |
| HARBOR CAPITAL ADVISORS, INC. | Reduced | -135.5k |
| SG Capital Management LLC | Sold out | -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.
| Holder | Stake |
|---|---|
| FMR LLC 13G · institution -3.3 pts · filed 2026-08-06 | 6.7% |
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
| Manager | Shares | Change |
|---|---|---|
| FMR LLC 0.02% of their portfolio | 3.4m $322.2m | Added +654.3k |
| REINHART PARTNERS, LLC. 4.63% of their portfolio | 1.5m $142.3m | Added +29.4k |
| ACADIAN ASSET MANAGEMENT LLC 0.22% of their portfolio | 1.3m $123.4m | Reduced -8.7k |
| Pertento Partners LLP 14.90% of their portfolio | 1.3m $122.3m | Added +31.4k |
| LORD, ABBETT & CO. LLC 0.32% of their portfolio | 1.1m $107.6m | Reduced -113.8k |
| FRONTIER CAPITAL MANAGEMENT CO LLC 0.89% of their portfolio | 1.0m $98.9m | Reduced -238.0k |
| Invesco Ltd. 0.01% of their portfolio | 905.9k $85.9m | Reduced -39 |
| LAZARD ASSET MANAGEMENT LLC 0.10% of their portfolio | 783.7k $74.3m | Added +17.7k |
| Point72 Asset Management, L.P. 0.14% of their portfolio | 700.0k $66.4m | Reduced -364.4k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 696.0k $66.0m | Reduced -154.0k |
| Erste Asset Management GmbH 0.60% of their portfolio | 664.0k $62.3m | Unchanged |
| SYSTEMATIC FINANCIAL MANAGEMENT LP 1.36% of their portfolio | 588.3k $55.8m | Reduced -9.2k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.02% of their portfolio | 586.7k $55.6m | Reduced -155.7k |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 1.72% of their portfolio | 558.0k $52.9m | Added +44.1k |
| Boston Partners 0.05% of their portfolio | 539.4k $51.1m | Reduced -196.2k |
| Ophir Asset Management Pty Ltd 5.92% of their portfolio | 505.5k $47.9m | Added +140.9k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.04% of their portfolio | 505.1k $47.9m | Reduced -141.8k |
| NEUMEIER POMA INVESTMENT COUNSEL LLC 3.71% of their portfolio | 478.5k $45.4m | Added +46.2k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.07% of their portfolio | 446.2k $42.3m | Reduced -150.7k |
| Robeco Institutional Asset Management B.V. 0.06% of their portfolio | 442.7k $42.0m | Added +135.6k |
| HERALD INVESTMENT MANAGEMENT Ltd 4.85% of their portfolio | 384.9k $36.4m | Unchanged |
| HIGHLAND PEAK CAPITAL, LLC 13.35% of their portfolio | 375.9k $35.6m | Added +30.5k |
| HAWK RIDGE CAPITAL MANAGEMENT LP 1.68% of their portfolio | 372.7k $35.3m | Added +155.8k |
| Kite Lake Capital Management (UK) LLP 41.05% of their portfolio | 365.0k $34.6m | Reduced -26.6k |
| HEARTLAND ADVISORS INC 1.78% of their portfolio | 355.8k $33.7m | Reduced -46.0k |
| Driehaus Capital Management LLC 0.22% of their portfolio | 330.9k $31.4m | Added +243.3k |
| Think Investments LP 3.63% of their portfolio | 289.3k $27.4m | Reduced -60.1k |
| Apis Capital Advisors, LLC 5.99% of their portfolio | 286.0k $27.1m | Added +30.0k |
| UBS Group AG 0.00% of their portfolio | 253.0k $24.0m | Added +66.5k |
| ALPINE ASSOCIATES MANAGEMENT INC. 1.43% of their portfolio | 247.4k $23.5m | Reduced -84.6k |
| Russell Investments Group, Ltd. 0.03% of their portfolio | 245.4k $23.2m | Reduced -22.9k |
| OBERWEIS ASSET MANAGEMENT INC/ 0.84% of their portfolio | 230.6k $21.9m | Unchanged |
| SCHWARTZ INVESTMENT COUNSEL INC 0.70% of their portfolio | 220.0k $20.9m | Unchanged |
| ODDO BHF ASSET MANAGEMENT SAS 0.78% of their portfolio | 217.5k $20.6m | Unchanged |
| MILLENNIUM MANAGEMENT LLC 0.02% of their portfolio | 213.2k $20.2m | Added +88.1k |
| Granahan Investment Management, LLC 0.81% of their portfolio | 207.8k $19.7m | Added +77.7k |
| M&G PLC 0.09% of their portfolio | 181.0k $17.2m | Reduced -82.1k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 181.0k $17.2m | Reduced -87.1k |
| MORGAN STANLEY 0.00% of their portfolio | 178.2k $16.9m | Reduced -7.4k |
| Clearline Capital LP 1.39% of their portfolio | 169.7k $16.1m | Reduced -57.9k |
| First Eagle Investment Management, LLC 0.03% of their portfolio | 150.5k $14.3m | Added +4.3k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 136.9k $13.0m | Reduced -1.5k |
| ARDSLEY ADVISORY PARTNERS LP 1.93% of their portfolio | 133.0k $12.6m | New |
| Balyasny Asset Management L.P. 0.02% of their portfolio | 127.3k $12.1m | Added +28.0k |
| EASTERLY INVESTMENT PARTNERS LLC 0.80% of their portfolio | 124.0k $11.8m | Reduced -77.3k |
| Polar Asset Management Partners Inc. 0.23% of their portfolio | 120.8k $11.5m | Reduced -84.9k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 110.0k $10.4m | Reduced -4.9k |
| Melqart Asset Management (UK) Ltd 1.34% of their portfolio | 106.2k $10.1m | Added +48.2k |
| KNIGHTSBRIDGE ASSET MANAGEMENT, LLC 1.62% of their portfolio | 101.1k $9.6m | Reduced -1.9k |
| Concentric Capital Strategies, LP 0.45% of their portfolio | 98.9k $9.4m | Added +24.6k |
| SummitTX Capital, L.P. 0.39% of their portfolio | 98.1k $9.3m | Reduced -82.0k |
| Janney Montgomery Scott LLC 0.02% of their portfolio | 88.6k $8.4m | Added +2.0k |
| Prospect Capital Advisors, LLC 4.34% of their portfolio | 88.3k $8.4m | Reduced -40.0k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio | 86.3k $8.2m | Added +12.3k |
| STATE STREET CORP 0.00% of their portfolio | 80.2k $7.6m | Added +23.7k |
| BlackRock, Inc. 0.00% of their portfolio | 78.9k $7.5m | Added +20.6k |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 78.6k $7.4m | Reduced -23.9k |
| Cinctive Capital Management LP 0.37% of their portfolio | 78.0k $7.4m | Reduced -16.9k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 77.4k $7.3m | Added +57.0k |
| Susquehanna Portfolio Strategies, LLC 0.12% of their portfolio | 77.3k $7.3m | Unchanged |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 72.8k $6.9m | Reduced -47.0k |
| SORA INVESTORS LLC 0.63% of their portfolio | 71.5k $6.8m | Reduced -233.9k |
| HARBOR CAPITAL ADVISORS, INC. 0.50% of their portfolio | 67.3k $6.4m | Reduced -135.5k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 65.7k $6.2m | Added +659 |
| ROYCE & ASSOCIATES LP 0.06% of their portfolio | 65.5k $6.2m | New |
| SEI INVESTMENTS CO 0.01% of their portfolio | 61.2k $5.8m | Reduced -3.7k |
| MARSHALL WACE, LLP 0.01% of their portfolio | 55.4k $5.3m | Added +12.9k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 53.7k $5.1m | Reduced -91.2k |
| Potrero Capital Research LLC 1.49% of their portfolio | 51.9k $4.9m | New |
| F/m Investments LLC 0.18% of their portfolio | 50.3k $4.8m | Reduced -433 |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 49.2k $4.7m | Added +5.9k |
| BOOTHBAY FUND MANAGEMENT, LLC 0.12% of their portfolio | 48.6k $4.6m | Reduced -7.4k |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 44.0k $4.2m | Reduced -8.7k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 41.4k $3.9m | Added +3.6k |
| Man Group plc 0.01% of their portfolio | 41.4k $3.9m | New |
| ABN AMRO INVESTMENT SOLUTIONS 0.08% of their portfolio | 41.2k $3.9m | Reduced -14.4k |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.01% of their portfolio | 41.2k $3.9m | Unchanged |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 40.4k $3.8m | Reduced -28.9k |
| 1492 Capital Management LLC 1.55% of their portfolio | 40.4k $3.8m | Added +4.2k |
| Skylands Capital, LLC 0.51% of their portfolio | 38.6k $3.7m | Reduced -13.4k |
| OSTERWEIS CAPITAL MANAGEMENT INC 0.16% of their portfolio | 38.0k $3.6m | New |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 36.0k $3.4m | Unchanged |
| Ramirez Asset Management, Inc. 0.44% of their portfolio | 33.3k $3.2m | Reduced -40.7k |
| OAK ASSOCIATES LTD /OH/ 0.19% of their portfolio | 32.9k $3.1m | Reduced -166 |
| VAN ECK ASSOCIATES CORP 0.00% of their portfolio | 32.0k $3.0m | Added +17.3k |
| Vident Advisory, LLC 0.03% of their portfolio | 28.1k $2.7m | Reduced -1.2k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 27.8k $2.2m | Added +18.4k |
| Jain Global LLC 0.03% of their portfolio | 26.0k $2.5m | Reduced -51.6k |
| TWO SIGMA ADVISERS, LP 0.00% of their portfolio | 23.2k $2.2m | Added +13.2k |
| GAMCO INVESTORS, INC. ET AL 0.02% of their portfolio | 22.6k $2.1m | Reduced -3.6k |
| Cerity Partners LLC 0.00% of their portfolio | 22.3k $2.1m | Reduced -7.9k |
| KENNEDY CAPITAL MANAGEMENT LLC 0.05% of their portfolio | 22.1k $2.1m | Added +8.6k |
| Tidal Investments LLC 0.01% of their portfolio | 21.2k $2.0m | Added +13.2k |
| Point72 Asia (Singapore) Pte. Ltd. 0.31% of their portfolio | 21.2k $2.0m | New |
| Walleye Trading LLC 0.03% of their portfolio | 20.6k $1.9m | Added +8.8k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 19.4k $1.8m | New |
| QUADRANT CAPITAL GROUP LLC 0.06% of their portfolio | 18.6k $1.8m | Added +15.8k |
| NAPLES GLOBAL ADVISORS, LLC 0.13% of their portfolio | 17.9k $1.7m | Added +260 |
| TEALWOOD ASSET MANAGEMENT INC 0.68% of their portfolio | 17.8k $1.7m | Reduced -744 |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 17.3k $1.6m | Added +12.7k |