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 ($7.1m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $61.26. Options: 16 managers hold calls ($87.2m notional), 12 hold puts ($42.1m).
Trends to Q4 2023
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 |
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 2022 | 110 | 98 |
| Q1 2023 | 100 | 98 |
| Q2 2023 | 86 | 116 |
| Q3 2023 | 110 | 118 |
| Q4 2023 | 121 | 90 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q1 2023 | $166.8m | $207.9m | 1.25 |
| Q2 2023 | $428.6m | $459.5m | 1.07 |
| Q3 2023 | $108.4m | $69.6m | 0.64 |
| Q4 2023 | $87.2m | $42.1m | 0.48 |
Biggest buyers
| MORGAN STANLEY | Added | +2.8m |
| MILLENNIUM MANAGEMENT LLC | Added | +826.0k |
| Pertento Partners LLP | Added | +438.5k |
| FMR LLC | Added | +422.5k |
| WESTFIELD CAPITAL MANAGEMENT CO LP | New | +408.1k |
| ACADIAN ASSET MANAGEMENT LLC | Added | +323.3k |
| GOLDMAN SACHS GROUP INC | Added | +272.1k |
| REINHART PARTNERS, LLC. | Added | +270.2k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Added | +228.0k |
| JANE STREET GROUP, LLC | Added | +218.8k |
Biggest sellers
| FARALLON CAPITAL MANAGEMENT, L.L.C. | Reduced | -798.5k |
| Hudson Bay Capital Management LP | Reduced | -704.1k |
| HBK INVESTMENTS L P | Reduced | -533.4k |
| Davidson Kempner Capital Management LP | Reduced | -435.1k |
| Westchester Capital Management, LLC | Sold out | -411.7k |
| TIG Advisors, LLC | Reduced | -359.2k |
| MARSHALL WACE, LLP | Reduced | -287.2k |
| Beryl Capital Management LLC | Reduced | -209.6k |
| CITADEL ADVISORS LLC | Reduced | -184.8k |
| Grantham, Mayo, Van Otterloo & Co. LLC | Reduced | -162.2k |
Biggest calls
| GROUP ONE TRADING LLC | Added | $21.6m353.3k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $15.3m249.4k shares |
| JANE STREET GROUP, LLC | Reduced | $14.2m232.2k shares |
| PEAK6 Investments LLC | Added | $9.5m155.2k shares |
| UBS Group AG | Reduced | $8.3m136.2k shares |
| CastleKnight Management LP | Unchanged | $6.1m100.0k shares |
| SIMPLEX TRADING, LLC | Reduced | $5.9m96.2k shares |
| CITADEL ADVISORS LLC | Added | $2.2m36.3k shares |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | New | $1.8m30.0k shares |
| Walleye Trading LLC | Reduced | $1.2m20.4k shares |
Biggest puts
| SIMPLEX TRADING, LLC | Added | $12.7m208.0k shares |
| Walleye Trading LLC | Added | $8.0m130.7k shares |
| GROUP ONE TRADING LLC | Reduced | $7.8m127.8k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $5.2m84.4k shares |
| PEAK6 Investments LLC | Reduced | $2.4m39.2k shares |
| CITADEL ADVISORS LLC | Added | $1.7m28.2k shares |
| J. Goldman & Co LP | New | $1.7m28.1k shares |
| Walleye Capital LLC | New | $1.1m18.7k shares |
| JANE STREET GROUP, LLC | Reduced | $1.0m17.1k shares |
| HARVEST MANAGEMENT LLC | Reduced | $306.4k5.0k 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 Q4 2023
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 Q4 2023.
Holders, Q4 2023
| Manager | Shares | Change |
|---|---|---|
| MORGAN STANLEY 0.01% of their portfolio | 3.4m $210.3m | Added +2.8m |
| ALPINE ASSOCIATES MANAGEMENT INC. 3.00% of their portfolio | 955.5k $58.5m | Added +3.3k |
| MILLENNIUM MANAGEMENT LLC 0.06% of their portfolio | 954.4k $58.5m | Added +826.0k |
| HAWK RIDGE CAPITAL MANAGEMENT LP 3.31% of their portfolio | 944.6k $57.9m | Unchanged |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 819.5k $50.2m | Added +247 |
| Melqart Asset Management (UK) Ltd 3.87% of their portfolio | 783.8k $48.0m | Reduced -28.1k |
| HBK INVESTMENTS L P 1.12% of their portfolio | 766.6k $47.0m | Reduced -533.4k |
| Kodai Capital Management LP 0.90% of their portfolio | 719.3k $44.1m | First filing |
| REINHART PARTNERS, LLC. 1.89% of their portfolio | 700.7k $42.9m | Added +270.2k |
| Segantii Capital Management Ltd 2.59% of their portfolio | 697.7k $42.7m | Reduced -136.3k |
| Erste Asset Management GmbH 0.61% of their portfolio | 680.0k $41.7m | Added +130.0k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.08% of their portfolio | 668.6k $41.0m | Added +86.9k |
| COOPER CREEK PARTNERS MANAGEMENT LLC 2.15% of their portfolio | 667.5k $40.9m | Reduced -93.1k |
| CITADEL ADVISORS LLC 0.04% of their portfolio | 631.4k $38.7m | Reduced -184.8k |
| Invesco Ltd. 0.01% of their portfolio | 625.4k $38.3m | Added +489 |
| Pertento Partners LLP 7.02% of their portfolio | 605.5k $37.1m | Added +438.5k |
| FMR LLC 0.00% of their portfolio | 584.5k $35.8m | Added +422.5k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.01% of their portfolio | 530.7k $32.5m | Added +228.0k |
| ACADIAN ASSET MANAGEMENT LLC 0.12% of their portfolio | 511.1k $31.3m | Added +323.3k |
| Balyasny Asset Management L.P. 0.07% of their portfolio | 425.6k $26.1m | Added +60.6k |
| WESTFIELD CAPITAL MANAGEMENT CO LP 0.15% of their portfolio | 408.1k $25.0m | New |
| HERALD INVESTMENT MANAGEMENT Ltd 4.50% of their portfolio | 384.9k $23.6m | Unchanged |
| BANK OF MONTREAL /CAN/ 0.01% of their portfolio | 383.5k $23.6m | Added +56.3k |
| WATER ISLAND CAPITAL LLC 2.40% of their portfolio | 382.0k $23.4m | Reduced -98.2k |
| Davidson Kempner Capital Management LP 0.40% of their portfolio | 372.7k $22.8m | Reduced -435.1k |
| D. E. Shaw & Co., Inc. 0.03% of their portfolio | 328.5k $20.1m | Reduced -3.5k |
| HEARTLAND ADVISORS INC 1.05% of their portfolio | 327.9k $20.1m | Added +127.9k |
| Clearline Capital LP 2.23% of their portfolio | 325.4k $19.9m | Unchanged |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 316.3k $19.4m | Added +272.1k |
| MARSHALL WACE, LLP 0.04% of their portfolio | 310.0k $19.0m | Reduced -287.2k |
| Hudson Bay Capital Management LP 0.16% of their portfolio | 303.6k $18.6m | Reduced -704.1k |
| SYSTEMATIC FINANCIAL MANAGEMENT LP 0.51% of their portfolio | 278.3k $17.1m | Added +102.1k |
| UBS Group AG 0.01% of their portfolio | 273.7k $16.8m | Added +78.0k |
| Taconic Capital Advisors LP 1.59% of their portfolio | 270.0k $16.5m | Unchanged |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 251.0k $15.4m | Added +83.8k |
| FARALLON CAPITAL MANAGEMENT, L.L.C. 0.09% of their portfolio | 246.5k $15.1m | Reduced -798.5k |
| EASTERLY INVESTMENT PARTNERS LLC 1.60% of their portfolio | 244.3k $15.0m | Added +4.3k |
| JANE STREET GROUP, LLC 0.02% of their portfolio | 236.3k $14.5m | Added +218.8k |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.05% of their portfolio | 226.2k $13.9m | Reduced -122.0k |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 0.73% of their portfolio | 218.7k $13.4m | New |
| M&G INVESTMENT MANAGEMENT LTD 0.08% of their portfolio | 206.3k $12.6m | Added +69.0k |
| Prospect Capital Advisors, LLC 4.47% of their portfolio | 200.8k $12.3m | Added +98.0k |
| TIG Advisors, LLC 1.80% of their portfolio | 196.2k $12.0m | Reduced -359.2k |
| Man Group plc 0.03% of their portfolio | 194.3k $11.9m | New |
| STATE OF WISCONSIN INVESTMENT BOARD 0.03% of their portfolio | 178.6k $10.9m | Reduced -114.1k |
| P SCHOENFELD ASSET MANAGEMENT LP 3.03% of their portfolio | 177.4k $10.9m | Reduced -110.1k |
| Polar Asset Management Partners Inc. 0.28% of their portfolio | 170.1k $10.4m | Added +160.1k |
| CastleKnight Management LP 1.64% of their portfolio | 167.1k $10.2m | Added +53.9k |
| Grantham, Mayo, Van Otterloo & Co. LLC 0.04% of their portfolio | 156.2k $9.6m | Reduced -162.2k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 146.2k $9.0m | Reduced -112.7k |
| Nokomis Capital, L.L.C. 3.22% of their portfolio | 136.5k $8.4m | Reduced -76.8k |
| KENNEDY CAPITAL MANAGEMENT LLC 0.17% of their portfolio | 128.5k $7.9m | New |
| BlackRock Inc. 0.00% of their portfolio | 121.0k $7.4m | Reduced -129.5k |
| Sand Grove Capital Management LLP 2.26% of their portfolio | 119.2k $7.3m | Reduced -25.3k |
| MASO CAPITAL PARTNERS Ltd 6.03% of their portfolio | 113.9k $7.0m | Unchanged |
| CANADA PENSION PLAN INVESTMENT BOARD 0.01% of their portfolio | 102.4k $6.3m | Added +90.0k |
| ROYCE & ASSOCIATES LP 0.06% of their portfolio | 101.5k $6.2m | New |
| J. Goldman & Co LP 0.34% of their portfolio | 98.0k $6.0m | New |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio | 90.6k $5.6m | Added +71.4k |
| NATIONAL BANK OF CANADA /FI/ 0.01% of their portfolio | 90.3k $5.4m | Added +89.6k |
| Crestline Management, L.P. 0.51% of their portfolio | 90.3k $5.5m | Added +82.3k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 89.7k $5.5m | Added +69.1k |
| Quinn Opportunity Partners LLC 0.60% of their portfolio | 84.6k $5.2m | Added +6.3k |
| STATE STREET CORP 0.00% of their portfolio | 80.9k $5.0m | Added +2.9k |
| THOMPSON SIEGEL & WALMSLEY LLC 0.08% of their portfolio | 79.3k $4.9m | Reduced -16.3k |
| NATIXIS 0.04% of their portfolio | 78.9k $4.8m | Reduced -29.0k |
| CAPITAL FUND MANAGEMENT S.A. 0.06% of their portfolio | 77.0k $4.7m | New |
| OBERWEIS ASSET MANAGEMENT INC/ 0.44% of their portfolio | 76.4k $4.7m | New |
| 272 Capital LP 1.50% of their portfolio | 74.2k $4.4m | Added +24.9k |
| Janney Montgomery Scott LLC 0.01% of their portfolio | 73.2k $4.5m | Added +341 |
| Perpetual Ltd 0.05% of their portfolio | 72.6k $4.4m | Reduced -17.3k |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 71.8k $4.4m | Added +69.7k |
| Alberta Investment Management Corp 0.04% of their portfolio | 70.8k $4.3m | Added +16.8k |
| Ramirez Asset Management, Inc. 0.88% of their portfolio | 70.5k $4.3m | Reduced -7.3k |
| Cubist Systematic Strategies, LLC 0.05% of their portfolio | 67.3k $4.1m | New |
| Beryl Capital Management LLC 2.18% of their portfolio | 64.7k $4.0m | Reduced -209.6k |
| GABELLI & Co INVESTMENT ADVISERS, INC. 0.68% of their portfolio | 59.4k $3.6m | Reduced -1.5k |
| GABELLI FUNDS LLC 0.03% of their portfolio | 59.4k $3.6m | Reduced -5.3k |
| Trexquant Investment LP 0.08% of their portfolio | 57.9k $3.5m | Added +41.5k |
| CAXTON ASSOCIATES LP 0.18% of their portfolio | 57.0k $3.5m | New |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 52.6k $3.2m | Added +1.5k |
| Virtus Family Office LLC 5.31% of their portfolio | 51.8k $3.2m | Reduced -3.7k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 50.7k $3.1m | Added +3.9k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 50.4k $3.1m | Added +35.8k |
| NOMURA HOLDINGS INC 0.03% of their portfolio | 50.3k $3.1m | New |
| Jump Financial, LLC 0.10% of their portfolio | 48.3k $3.0m | Added +22.2k |
| TWO SIGMA ADVISERS, LP 0.01% of their portfolio | 46.8k $2.9m | Added +19.2k |
| Roubaix Capital, LLC 1.84% of their portfolio | 42.7k $2.6m | New |
| ABN AMRO INVESTMENT SOLUTIONS 0.05% of their portfolio | 42.6k $2.6m | Added +13.1k |
| Skylands Capital, LLC 0.38% of their portfolio | 42.1k $2.6m | Added +6.9k |
| Robeco Institutional Asset Management B.V. 0.01% of their portfolio | 41.3k $2.5m | Added +7.6k |
| RENAISSANCE GROUP LLC 0.10% of their portfolio | 40.5k $2.5m | Added +2.5k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 34.9k $2.1m | Added +135 |
| SG Americas Securities, LLC 0.02% of their portfolio | 34.0k $2.1m | Unchanged |
| BOOTHBAY FUND MANAGEMENT, LLC 0.07% of their portfolio | 33.6k $2.1m | Added +15.1k |
| LAZARD ASSET MANAGEMENT LLC 0.00% of their portfolio | 33.1k $2.0m | Added +30.3k |
| Point72 Asset Management, L.P. 0.01% of their portfolio | 31.6k $1.9m | Reduced -9.1k |
| OAK ASSOCIATES LTD /OH/ 0.14% of their portfolio | 30.8k $1.9m | Unchanged |
| Susquehanna Portfolio Strategies, LLC 0.03% of their portfolio | 30.1k $1.8m | First filing |
| Manatuck Hill Partners, LLC 0.79% of their portfolio | 30.0k $1.8m | New |