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 ($58.1m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $330.44. Options: 16 managers hold calls ($438.8m notional), 11 hold puts ($226.0m).
Trends to Q2 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 |
| Q2 2026 | 386 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| 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 |
| Q2 2026 | 224 | 168 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $58.7m | $54.4m | 0.93 |
| Q4 2025 | $24.9m | $14.3m | 0.57 |
| Q1 2026 | $87.9m | $13.9m | 0.16 |
| Q2 2026 | $438.8m | $226.0m | 0.52 |
Biggest buyers
| ALKEON CAPITAL MANAGEMENT LLC | New | +1.1m |
| Polar Capital Holdings Plc | New | +931.4k |
| Invesco Ltd. | Added | +724.2k |
| TWO SIGMA INVESTMENTS, LP | Added | +426.5k |
| D. E. Shaw & Co., Inc. | New | +363.1k |
| BIT Capital GmbH | New | +349.2k |
| Bahl & Gaynor LLC | Added | +297.7k |
| Driehaus Capital Management LLC | Added | +276.1k |
| Granahan Investment Management, LLC | Added | +250.5k |
| ALLIANCEBERNSTEIN L.P. | New | +193.4k |
Biggest sellers
| FMR LLC | Reduced | -1.1m |
| LORD, ABBETT & CO. LLC | Reduced | -584.2k |
| Man Group plc | Reduced | -542.2k |
| Kite Lake Capital Management (UK) LLP | Reduced | -414.9k |
| Pertento Partners LLP | Sold out | -412.5k |
| REINHART PARTNERS, LLC. | Reduced | -348.0k |
| LAZARD ASSET MANAGEMENT LLC | Reduced | -346.1k |
| Robeco Institutional Asset Management B.V. | Reduced | -331.9k |
| FRONTIER CAPITAL MANAGEMENT CO LLC | Reduced | -269.7k |
| CastleKnight Management LP | Reduced | -262.0k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $143.8m431.3k shares |
| JANE STREET GROUP, LLC | Added | $95.1m285.3k shares |
| IMC-Chicago, LLC | Added | $70.6m211.7k shares |
| CITADEL ADVISORS LLC | Added | $45.6m136.8k shares |
| GROUP ONE TRADING LLC | Added | $21.3m63.8k shares |
| SIMPLEX TRADING, LLC | Added | $18.1m54.3k shares |
| TUDOR INVESTMENT CORP ET AL | Added | $15.2m45.7k shares |
| TWO SIGMA INVESTMENTS, LP | Added | $7.8m23.3k shares |
| CastleKnight Management LP | Reduced | $6.7m20.0k shares |
| PEAK6 LLC | New | $6.2m18.6k shares |
Biggest puts
| JANE STREET GROUP, LLC | Added | $72.0m216.1k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $70.8m212.5k shares |
| CITADEL ADVISORS LLC | Added | $38.9m116.7k shares |
| IMC-Chicago, LLC | Added | $30.4m91.1k shares |
| TWO SIGMA INVESTMENTS, LP | Added | $7.9m23.8k shares |
| D. E. Shaw & Co., Inc. | New | $1.7m5.0k shares |
| SIMPLEX TRADING, LLC | Added | $1.4m4.1k shares |
| Walleye Capital LLC | New | $1.2m3.5k shares |
| GROUP ONE TRADING LLC | New | $933.3k2.8k shares |
| TUDOR INVESTMENT CORP ET AL | New | $766.7k2.3k 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 since 1 Apr 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.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 3 | $1.9m | — |
| Q3 2026 | 0 | — | 0 | — | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-06-18 | SHIEH HAN-PING Director · American depositary shares | Sold | $328.0k1.0k shares |
| 2026-06-18 | LIN KUAN-MING Director · American depositary shares | Sold | $320.3k1.0k shares |
| 2026-06-17 | LIN KUAN-MING Director · American depositary shares | Sold | $610.0k2.0k shares |
| 2026-06-02 | SHIEH HAN-PING Director · American depositary shares | Sold | $301.2k1.0k shares |
| 2026-05-06 | DUANN SHII TYNG Director · American depositary shares | Sold | $367.5k1.5k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| FMR LLC 0.03% of their portfolio | 2.3m $759.3m | Reduced -1.1m |
| ACADIAN ASSET MANAGEMENT LLC 0.52% of their portfolio | 1.3m $438.5m | Added +22.1k |
| Invesco Ltd. 0.03% of their portfolio | 1.1m $380.8m | Added +724.2k |
| ALKEON CAPITAL MANAGEMENT LLC 1.41% of their portfolio | 1.1m $366.7m | New |
| HAWK RIDGE CAPITAL MANAGEMENT LP 10.85% of their portfolio | 1.0m $338.4m | Reduced -158.1k |
| REINHART PARTNERS, LLC. 7.35% of their portfolio | 966.1k $322.0m | Reduced -348.0k |
| Polar Capital Holdings Plc 0.88% of their portfolio | 931.4k $310.5m | New |
| Driehaus Capital Management LLC 1.52% of their portfolio | 786.1k $262.0m | Added +276.1k |
| TWO SIGMA INVESTMENTS, LP 0.18% of their portfolio | 701.1k $233.7m | Added +426.5k |
| Wolf Hill Capital Management, LP 17.70% of their portfolio | 548.8k $182.9m | Reduced -32.1k |
| Bahl & Gaynor LLC 0.70% of their portfolio | 453.3k $151.1m | Added +297.7k |
| Granahan Investment Management, LLC 5.29% of their portfolio | 445.8k $148.6m | Added +250.5k |
| LAZARD ASSET MANAGEMENT LLC 0.22% of their portfolio | 435.9k $145.3m | Reduced -346.1k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.06% of their portfolio | 417.9k $139.3m | Reduced -7.8k |
| LORD, ABBETT & CO. LLC 0.36% of their portfolio | 377.9k $126.0m | Reduced -584.2k |
| D. E. Shaw & Co., Inc. 0.07% of their portfolio | 363.1k $121.0m | New |
| Analog Century Management LP 4.42% of their portfolio | 362.5k $120.8m | Reduced -176.2k |
| SYSTEMATIC FINANCIAL MANAGEMENT LP 2.35% of their portfolio | 354.2k $118.1m | Reduced -152.5k |
| BIT Capital GmbH 3.99% of their portfolio | 349.2k $116.4m | New |
| OBERWEIS ASSET MANAGEMENT INC/ 2.18% of their portfolio | 316.4k $105.4m | Added +33.8k |
| Robeco Institutional Asset Management B.V. 0.12% of their portfolio | 299.7k $99.9m | Reduced -331.9k |
| MARSHALL WACE, LLP 0.08% of their portfolio | 291.8k $97.3m | Added +15.2k |
| MORGAN STANLEY 0.01% of their portfolio | 291.7k $97.2m | Added +80.8k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 276.8k $92.3m | Added +32.4k |
| VOYA INVESTMENT MANAGEMENT LLC 0.08% of their portfolio | 275.1k $91.7m | Reduced -106.7k |
| SCHWARTZ INVESTMENT COUNSEL INC 2.99% of their portfolio | 270.0k $90.0m | Reduced -30.0k |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 2.27% of their portfolio | 261.8k $87.3m | Reduced -194.6k |
| First Eagle Investment Management, LLC 0.07% of their portfolio | 251.5k $83.8m | Added +83.0k |
| KNIGHTSBRIDGE ASSET MANAGEMENT, LLC 3.23% of their portfolio | 217.0k $47.6m | Added +103.5k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.02% of their portfolio | 205.0k $68.7m | Reduced -5.3k |
| HIGHLAND PEAK CAPITAL, LLC 19.68% of their portfolio | 202.9k $67.6m | Reduced -241.7k |
| Russell Investments Group, Ltd. 0.06% of their portfolio | 200.3k $66.6m | Reduced -3.0k |
| Boston Partners 0.06% of their portfolio | 199.2k $66.4m | Reduced -73.6k |
| ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio | 193.4k $21.7m | New |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 185.3k $61.7m | Reduced -119.0k |
| FengHe Fund Management Pte. Ltd. 5.74% of their portfolio | 181.5k $60.5m | New |
| UBS Group AG 0.01% of their portfolio | 180.4k $60.1m | Reduced -211.5k |
| MILLENNIUM MANAGEMENT LLC 0.04% of their portfolio | 179.9k $60.0m | Reduced -215.8k |
| Apis Capital Advisors, LLC 5.79% of their portfolio | 178.4k $59.5m | Reduced -70.8k |
| NEUMEIER POMA INVESTMENT COUNSEL LLC 4.03% of their portfolio | 176.4k $58.8m | Reduced -251.8k |
| Ophir Asset Management Pty Ltd 4.78% of their portfolio | 174.3k $58.1m | Reduced -182.7k |
| LOOMIS SAYLES & CO L P 0.07% of their portfolio | 161.4k $53.8m | Reduced -27.2k |
| HERALD INVESTMENT MANAGEMENT Ltd 6.67% of their portfolio | 147.7k $49.2m | Reduced -220.0k |
| AIGH Capital Management LLC 4.35% of their portfolio | 144.0k $48.0m | Reduced -56.0k |
| SEI INVESTMENTS CO 0.04% of their portfolio | 142.3k $47.4m | Added +33.3k |
| Qube Research & Technologies Ltd 0.05% of their portfolio | 138.4k $46.1m | Reduced -213.1k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.03% of their portfolio | 129.5k $43.2m | Reduced -28.1k |
| BLAIR WILLIAM & CO/IL 0.11% of their portfolio | 125.2k $41.7m | Added +22.0k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 124.7k $41.6m | Added +96.4k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 124.1k $41.4m | Reduced -903 |
| HEARTLAND ADVISORS INC 1.84% of their portfolio | 123.9k $41.3m | Reduced -128.2k |
| Ratan Capital Management LP 12.65% of their portfolio | 117.6k $39.2m | New |
| Tidal Investments LLC 0.09% of their portfolio | 116.6k $38.9m | Added +67.2k |
| ENVESTNET ASSET MANAGEMENT INC 0.01% of their portfolio | 111.8k $37.3m | Reduced -5.2k |
| RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio | 110.7k $36.9m | Added +42.1k |
| WESTFIELD CAPITAL MANAGEMENT CO LP 0.12% of their portfolio | 106.5k $35.5m | New |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.04% of their portfolio | 105.9k $35.3m | New |
| AMERIPRISE FINANCIAL INC 0.01% of their portfolio | 102.5k $34.2m | Added +63.0k |
| Ma Investment Partnership, LP 5.94% of their portfolio | 100.0k $33.3m | New |
| Stephens Investment Management Group LLC 0.35% of their portfolio | 99.1k $33.0m | New |
| FRED ALGER MANAGEMENT, LLC 0.11% of their portfolio | 96.3k $32.1m | Reduced -64.6k |
| Walleye Trading LLC 0.41% of their portfolio | 88.0k $29.3m | Added +67.4k |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.04% of their portfolio | 75.8k $25.3m | Reduced -99.8k |
| BlackRock, Inc. 0.00% of their portfolio | 75.7k $25.2m | Added +66 |
| Ceredex Value Advisors LLC 0.69% of their portfolio | 73.7k $24.6m | New |
| STATE STREET CORP 0.00% of their portfolio | 73.4k $24.5m | Reduced -16.8k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 70.3k $23.4m | Added +66.6k |
| SG Capital Management LLC 1.99% of their portfolio | 66.0k $22.0m | New |
| Balyasny Asset Management L.P. 0.04% of their portfolio | 64.4k $21.5m | Reduced -20.5k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.09% of their portfolio | 62.0k $20.7m | Reduced -148.3k |
| CastleKnight Management LP 0.75% of their portfolio | 61.5k $20.5m | Reduced -262.0k |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.03% of their portfolio | 60.6k $20.2m | New |
| PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 0.07% of their portfolio | 60.3k $20.1m | Reduced -16.7k |
| Jump Financial, LLC 0.18% of their portfolio | 59.8k $19.9m | Added +23.0k |
| M&G PLC 0.10% of their portfolio | 58.6k $19.5m | Reduced -33.7k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 57.4k $19.1m | Reduced -22.9k |
| ROYCE & ASSOCIATES LP 0.15% of their portfolio | 56.8k $18.9m | Reduced -50.5k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 54.7k $18.2m | Added +5.6k |
| THAMES CAPITAL MANAGEMENT LLC 1.45% of their portfolio | 52.8k $17.6m | Added +6.5k |
| Hood River Capital Management LLC 0.13% of their portfolio | 52.6k $17.5m | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 52.0k $17.3m | Added +8.7k |
| Trexquant Investment LP 0.11% of their portfolio | 51.9k $17.3m | Added +26.2k |
| NEUBERGER BERMAN GROUP LLC 0.01% of their portfolio | 50.9k $17.0m | Reduced -21.1k |
| Janney Montgomery Scott LLC 0.03% of their portfolio | 48.9k $16.3m | Reduced -24.1k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.02% of their portfolio | 44.9k $15.0m | Added +8.9k |
| BERKSHIRE CAPITAL HOLDINGS INC 3.19% of their portfolio | 44.3k $14.8m | New |
| HARBOR CAPITAL ADVISORS, INC. 0.98% of their portfolio | 43.0k $14.3m | Reduced -21.0k |
| KORNITZER CAPITAL MANAGEMENT INC /KS 0.30% of their portfolio | 43.0k $14.3m | Unchanged |
| UNICOM Systems, Inc. 0.90% of their portfolio | 41.2k $13.7m | New |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 40.5k $13.5m | Reduced -24.1k |
| Melqart Asset Management (UK) Ltd 1.23% of their portfolio | 38.8k $12.9m | Reduced -16.3k |
| Kite Lake Capital Management (UK) LLP 4.46% of their portfolio | 37.7k $12.6m | Reduced -414.9k |
| Prospect Capital Advisors, LLC 5.55% of their portfolio | 36.7k $12.2m | Reduced -45.6k |
| ABN AMRO INVESTMENT SOLUTIONS 0.11% of their portfolio | 36.6k $12.2m | Reduced -36.5k |
| Emerald Investment Advisers, LLC 0.81% of their portfolio | 36.4k $12.1m | Reduced -11.6k |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.03% of their portfolio | 35.3k $11.8m | Reduced -11.6k |
| NATIONAL BANK OF CANADA /FI/ 0.01% of their portfolio | 35.2k $11.7m | Added +34.8k |
| Skylands Capital, LLC 1.40% of their portfolio | 34.2k $11.4m | Reduced -15.0k |
| VAN ECK ASSOCIATES CORP 0.01% of their portfolio | 34.0k $11.3m | Added +11.0k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 32.8k $10.9m | Added +16.6k |