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 ($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
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 |
| Q4 2025 | 242 |
| Q1 2026 | 276 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2024 | 136 | 86 |
| Q3 2024 | 96 | 125 |
| Q4 2024 | 98 | 107 |
| Q1 2025 | 104 | 94 |
| Q2 2025 | 113 | 100 |
| Q3 2025 | 109 | 109 |
| Q4 2025 | 121 | 101 |
| Q1 2026 | 155 | 115 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2025 | $36.1m | $22.9m | 0.64 |
| Q3 2025 | $58.7m | $54.4m | 0.93 |
| Q4 2025 | $24.9m | $14.3m | 0.57 |
| Q1 2026 | $87.9m | $13.9m | 0.16 |
Biggest buyers
| Analog Century Management LP | New | +538.7k |
| HAWK RIDGE CAPITAL MANAGEMENT LP | Added | +385.6k |
| VOYA INVESTMENT MANAGEMENT LLC | New | +381.9k |
| Qube Research & Technologies Ltd | Added | +256.1k |
| MILLENNIUM MANAGEMENT LLC | Added | +248.8k |
| CastleKnight Management LP | Added | +241.2k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Added | +225.2k |
| AIGH Capital Management LLC | New | +200.0k |
| Driehaus Capital Management LLC | Added | +190.4k |
| LOOMIS SAYLES & CO L P | New | +188.7k |
Biggest sellers
| Pertento Partners LLP | Reduced | -738.9k |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -392.7k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Reduced | -317.0k |
| Think Investments LP | Sold out | -289.3k |
| REINHART PARTNERS, LLC. | Reduced | -259.3k |
| FRONTIER CAPITAL MANAGEMENT CO LLC | Reduced | -239.1k |
| Invesco Ltd. | Reduced | -213.8k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | Reduced | -207.1k |
| CRAMER ROSENTHAL MCGLYNN LLC | Sold out | -143.6k |
| Clearline Capital LP | Sold out | -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.
| Holder | Stake |
|---|---|
| FMR LLC 13G · institution -3.3 pts · filed 2026-08-06 | 6.7% |
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
| Manager | Shares | Change |
|---|---|---|
| FMR LLC 0.02% of their portfolio | 3.4m $381.6m | Unchanged |
| REINHART PARTNERS, LLC. 4.24% of their portfolio | 1.3m $147.6m | Reduced -259.3k |
| ACADIAN ASSET MANAGEMENT LLC 0.21% of their portfolio | 1.3m $145.2m | Added +14.6k |
| HAWK RIDGE CAPITAL MANAGEMENT LP 4.79% of their portfolio | 1.2m $131.8m | Added +385.6k |
| LORD, ABBETT & CO. LLC 0.35% of their portfolio | 962.1k $108.0m | Reduced -32.8k |
| LAZARD ASSET MANAGEMENT LLC 0.14% of their portfolio | 782.0k $87.8m | Added +23.4k |
| Robeco Institutional Asset Management B.V. 0.10% of their portfolio | 631.6k $70.9m | Added +7.6k |
| Wolf Hill Capital Management, LP 9.25% of their portfolio | 580.9k $65.2m | Reduced -518 |
| Man Group plc 0.13% of their portfolio | 560.1k $62.9m | Added +179.1k |
| Analog Century Management LP 2.89% of their portfolio | 538.7k $60.5m | New |
| Driehaus Capital Management LLC 0.42% of their portfolio | 510.0k $57.3m | Added +190.4k |
| SYSTEMATIC FINANCIAL MANAGEMENT LP 1.30% of their portfolio | 506.7k $56.9m | Reduced -76.1k |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 2.37% of their portfolio | 456.4k $51.2m | Reduced -78.6k |
| Kite Lake Capital Management (UK) LLP 51.27% of their portfolio | 452.6k $50.8m | Reduced -3.7k |
| HIGHLAND PEAK CAPITAL, LLC 21.74% of their portfolio | 444.5k $49.9m | Reduced -52.1k |
| NEUMEIER POMA INVESTMENT COUNSEL LLC 3.96% of their portfolio | 428.2k $48.1m | Reduced -53.6k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.03% of their portfolio | 425.7k $47.8m | Added +225.2k |
| Invesco Ltd. 0.00% of their portfolio | 418.3k $47.0m | Reduced -213.8k |
| Pertento Partners LLP 4.92% of their portfolio | 412.5k $46.3m | Reduced -738.9k |
| MILLENNIUM MANAGEMENT LLC 0.03% of their portfolio | 395.8k $44.4m | Added +248.8k |
| UBS Group AG 0.01% of their portfolio | 391.9k $44.0m | Added +40.4k |
| VOYA INVESTMENT MANAGEMENT LLC 0.04% of their portfolio | 381.9k $42.9m | New |
| HERALD INVESTMENT MANAGEMENT Ltd 5.75% of their portfolio | 367.7k $41.3m | Reduced -17.2k |
| Ophir Asset Management Pty Ltd 4.67% of their portfolio | 357.0k $40.1m | Reduced -110.5k |
| Qube Research & Technologies Ltd 0.06% of their portfolio | 351.5k $39.5m | Added +256.1k |
| CastleKnight Management LP 1.70% of their portfolio | 323.5k $36.3m | Added +241.2k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 304.3k $34.2m | Reduced -392.7k |
| SCHWARTZ INVESTMENT COUNSEL INC 1.20% of their portfolio | 300.0k $33.7m | Added +80.0k |
| OBERWEIS ASSET MANAGEMENT INC/ 0.94% of their portfolio | 282.6k $31.7m | Added +46.2k |
| MARSHALL WACE, LLP 0.03% of their portfolio | 276.6k $31.1m | Added +143.9k |
| TWO SIGMA INVESTMENTS, LP 0.03% of their portfolio | 274.6k $30.8m | Reduced -105.3k |
| Boston Partners 0.03% of their portfolio | 272.8k $30.6m | Reduced -111.0k |
| FRONTIER CAPITAL MANAGEMENT CO LLC 0.31% of their portfolio | 272.4k $30.6m | Reduced -239.1k |
| HEARTLAND ADVISORS INC 1.44% of their portfolio | 252.1k $28.3m | Reduced -20.3k |
| Apis Capital Advisors, LLC 4.32% of their portfolio | 249.2k $28.0m | Added +35.1k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 244.4k $27.4m | Added +61.0k |
| MORGAN STANLEY 0.00% of their portfolio | 211.0k $23.7m | Reduced -53.9k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.09% of their portfolio | 210.3k $23.6m | Added +97.8k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.01% of their portfolio | 210.3k $23.8m | Added +3.6k |
| Russell Investments Group, Ltd. 0.02% of their portfolio | 203.4k $22.3m | Added +4.6k |
| AIGH Capital Management LLC 4.60% of their portfolio | 200.0k $22.5m | New |
| Granahan Investment Management, LLC 1.06% of their portfolio | 195.3k $21.9m | Reduced -33.9k |
| LOOMIS SAYLES & CO L P 0.03% of their portfolio | 188.7k $21.2m | New |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.03% of their portfolio | 175.7k $19.7m | Added +66.6k |
| First Eagle Investment Management, LLC 0.03% of their portfolio | 168.4k $18.9m | Added +14.9k |
| FRED ALGER MANAGEMENT, LLC 0.08% of their portfolio | 160.9k $18.1m | New |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.02% of their portfolio | 157.7k $17.7m | Reduced -207.1k |
| Bahl & Gaynor LLC 0.09% of their portfolio | 155.6k $17.5m | New |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.01% of their portfolio | 138.6k $14.6m | Added +100.9k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 125.0k $14.0m | Reduced -484 |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 117.0k $13.1m | Added +29.0k |
| ALPINE ASSOCIATES MANAGEMENT INC. 0.77% of their portfolio | 116.9k $13.1m | Added +36.9k |
| KNIGHTSBRIDGE ASSET MANAGEMENT, LLC 1.72% of their portfolio | 113.6k $12.8m | Added +10.8k |
| SEI INVESTMENTS CO 0.01% of their portfolio | 109.1k $12.2m | Added +13.7k |
| ROYCE & ASSOCIATES LP 0.12% of their portfolio | 107.2k $12.0m | Added +14.7k |
| BLAIR WILLIAM & CO/IL 0.03% of their portfolio | 103.2k $11.6m | New |
| M&G PLC 0.05% of their portfolio | 92.2k $10.3m | Reduced -110.6k |
| STATE STREET CORP 0.00% of their portfolio | 90.2k $10.1m | Reduced -887 |
| Strategic Wealth Partners, Ltd. 0.67% of their portfolio | 86.2k $9.7m | Added +5.2k |
| Balyasny Asset Management L.P. 0.02% of their portfolio | 85.0k $9.5m | Reduced -57.6k |
| Prospect Capital Advisors, LLC 5.13% of their portfolio | 82.2k $9.2m | Reduced -6.1k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 80.4k $9.0m | Added +13.7k |
| Susquehanna Portfolio Strategies, LLC 0.13% of their portfolio | 77.3k $8.7m | Unchanged |
| PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 0.03% of their portfolio | 77.0k $8.6m | New |
| BlackRock, Inc. 0.00% of their portfolio | 75.7k $8.5m | Added +5.5k |
| Walleye Capital LLC 0.05% of their portfolio | 73.5k $8.2m | Added +2.7k |
| ABN AMRO INVESTMENT SOLUTIONS 0.11% of their portfolio | 73.1k $8.2m | Reduced -33.7k |
| Janney Montgomery Scott LLC 0.02% of their portfolio | 73.0k $8.2m | Reduced -15.8k |
| NEUBERGER BERMAN GROUP LLC 0.01% of their portfolio | 72.0k $8.1m | New |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 68.6k $7.7m | Added +29.7k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 64.6k $7.3m | Reduced -68.5k |
| HARBOR CAPITAL ADVISORS, INC. 0.58% of their portfolio | 64.0k $7.2m | Reduced -4.5k |
| ODDO BHF ASSET MANAGEMENT SAS 0.27% of their portfolio | 60.0k $6.7m | Reduced -132.5k |
| SORA INVESTORS LLC 0.60% of their portfolio | 58.2k $6.5m | Reduced -70.1k |
| Melqart Asset Management (UK) Ltd 0.61% of their portfolio | 55.1k $6.2m | Reduced -43.3k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.01% of their portfolio | 54.7k $6.1m | Reduced -317.0k |
| OVERSEA-CHINESE BANKING Corp Ltd 0.17% of their portfolio | 53.0k $5.9m | Reduced -22.7k |
| Tidal Investments LLC 0.02% of their portfolio | 49.4k $5.6m | Added +21.3k |
| Skylands Capital, LLC 0.72% of their portfolio | 49.2k $5.5m | Reduced -4.0k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 49.0k $5.5m | Added +2.1k |
| Emerald Investment Advisers, LLC 0.49% of their portfolio | 48.1k $5.4m | First filing |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.02% of their portfolio | 47.0k $5.3m | Added +5.8k |
| THAMES CAPITAL MANAGEMENT LLC 0.93% of their portfolio | 46.3k $5.2m | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 43.3k $4.9m | Reduced -557 |
| KORNITZER CAPITAL MANAGEMENT INC /KS 0.10% of their portfolio | 43.0k $4.8m | New |
| BOOTHBAY FUND MANAGEMENT, LLC 0.10% of their portfolio | 39.9k $4.5m | Reduced -23.2k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 39.5k $4.4m | Added +2.8k |
| Y-Intercept (Hong Kong) Ltd 0.08% of their portfolio | 39.4k $4.4m | Added +30.0k |
| SCALAR GAUGE MANAGEMENT, LLC 4.22% of their portfolio | 39.0k $4.4m | New |
| Jump Financial, LLC 0.06% of their portfolio | 36.8k $4.1m | Added +14.8k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 36.4k $4.1m | Reduced -43.0k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio | 36.0k $4.0m | Unchanged |
| Ramirez Asset Management, Inc. 0.61% of their portfolio | 32.4k $5.1m | Added +780 |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 28.6k $3.2m | Reduced -13.1k |
| CHASE INVESTMENT COUNSEL CORP 0.84% of their portfolio | 28.5k $3.2m | New |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 28.3k $3.2m | Reduced -9.7k |
| Polar Asset Management Partners Inc. 0.08% of their portfolio | 28.2k $3.2m | New |
| Vident Advisory, LLC 0.03% of their portfolio | 27.5k $3.1m | Added +1.0k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 27.2k $3.1m | Added +20.1k |
| Trexquant Investment LP 0.02% of their portfolio | 25.7k $2.9m | New |