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 ($4.8m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $51.28. Options: 26 managers hold calls ($108.4m notional), 20 hold puts ($69.6m).
Trends to Q3 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 |
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 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q4 2022 | $58.1m | $172.0m | 2.96 |
| Q1 2023 | $166.8m | $207.9m | 1.25 |
| Q2 2023 | $428.6m | $459.5m | 1.07 |
| Q3 2023 | $108.4m | $69.6m | 0.64 |
Biggest buyers
| Hudson Bay Capital Management LP | Added | +981.3k |
| CITADEL ADVISORS LLC | Added | +813.9k |
| WELLINGTON MANAGEMENT GROUP LLP | Added | +758.6k |
| Davidson Kempner Capital Management LP | Added | +681.4k |
| COOPER CREEK PARTNERS MANAGEMENT LLC | Added | +673.3k |
| Invesco Ltd. | New | +624.9k |
| Segantii Capital Management Ltd | Added | +534.0k |
| HBK INVESTMENTS L P | Added | +500.0k |
| REINHART PARTNERS, LLC. | New | +430.5k |
| Westchester Capital Management, LLC | New | +411.7k |
Biggest sellers
| MILLENNIUM MANAGEMENT LLC | Reduced | -1.2m |
| Beryl Capital Management LLC | Reduced | -688.6k |
| BLUEFIN CAPITAL MANAGEMENT, LLC | Sold out | -580.7k |
| CITIGROUP INC | Reduced | -508.3k |
| GOLDMAN SACHS GROUP INC | Reduced | -503.0k |
| Sand Grove Capital Management LLP | Reduced | -477.9k |
| D. E. Shaw & Co., Inc. | Reduced | -471.2k |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | Reduced | -413.7k |
| LAZARD ASSET MANAGEMENT LLC | Reduced | -405.8k |
| SYSTEMATIC FINANCIAL MANAGEMENT LP | Reduced | -298.9k |
Biggest calls
| JANE STREET GROUP, LLC | Added | $16.8m327.1k shares |
| GROUP ONE TRADING LLC | Added | $15.6m304.7k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $12.8m250.4k shares |
| SIMPLEX TRADING, LLC | Added | $11.5m223.5k shares |
| UBS Group AG | New | $8.6m168.7k shares |
| MILLENNIUM MANAGEMENT LLC | Added | $5.1m100.0k shares |
| CastleKnight Management LP | New | $5.1m100.0k shares |
| GTS SECURITIES LLC | New | $5.0m96.8k shares |
| DLD Asset Management, LP | New | $4.0m77.5k shares |
| Calamos Advisors LLC | New | $3.6m50.0k shares |
Biggest puts
| GROUP ONE TRADING LLC | Reduced | $29.4m573.9k shares |
| Maven Securities LTD | Reduced | $8.5m166.7k shares |
| MILLENNIUM MANAGEMENT LLC | Reduced | $5.1m100.0k shares |
| SIMPLEX TRADING, LLC | Reduced | $4.8m94.0k shares |
| Balyasny Asset Management L.P. | Reduced | $3.7m71.5k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $3.5m68.7k shares |
| FIFTH LANE CAPITAL, LP | Unchanged | $2.6m35.5k shares |
| GTS SECURITIES LLC | New | $2.3m45.8k shares |
| EQUITEC PROPRIETARY MARKETS, LLC | Reduced | $2.3m44.3k shares |
| PEAK6 Investments LLC | Added | $2.3m44.1k 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 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 Q3 2023.
Holders, Q3 2023
| Manager | Shares | Change |
|---|---|---|
| HBK INVESTMENTS L P 1.48% of their portfolio | 1.3m $66.6m | Added +500.0k |
| FARALLON CAPITAL MANAGEMENT, L.L.C. 0.30% of their portfolio | 1.0m $53.6m | Added +110.0k |
| Hudson Bay Capital Management LP 0.25% of their portfolio | 1.0m $51.6m | Added +981.3k |
| ALPINE ASSOCIATES MANAGEMENT INC. 2.56% of their portfolio | 952.2k $48.8m | Added +381.6k |
| HAWK RIDGE CAPITAL MANAGEMENT LP 2.38% of their portfolio | 944.6k $48.4m | Added +365.5k |
| Segantii Capital Management Ltd 1.60% of their portfolio | 834.0k $42.7m | Added +534.0k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 819.3k $42.0m | Added +758.6k |
| CITADEL ADVISORS LLC 0.05% of their portfolio | 816.2k $41.8m | Added +813.9k |
| Kite Lake Capital Management (UK) LLP 4.33% of their portfolio | 813.4k $41.7m | Not comparable |
| Melqart Asset Management (UK) Ltd 2.97% of their portfolio | 811.8k $41.6m | Added +45.8k |
| Davidson Kempner Capital Management LP 0.64% of their portfolio | 807.8k $41.4m | Added +681.4k |
| COOPER CREEK PARTNERS MANAGEMENT LLC 2.37% of their portfolio | 760.6k $39.0m | Added +673.3k |
| MORGAN STANLEY 0.00% of their portfolio | 647.0k $33.2m | Reduced -148.1k |
| Invesco Ltd. 0.01% of their portfolio | 624.9k $32.0m | New |
| MARSHALL WACE, LLP 0.07% of their portfolio | 597.3k $30.6m | Added +184.2k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.07% of their portfolio | 581.8k $29.8m | Added +189.7k |
| TIG Advisors, LLC 1.40% of their portfolio | 555.4k $28.5m | Reduced -75.5k |
| Erste Asset Management GmbH 0.49% of their portfolio | 550.0k $28.2m | Added +46.0k |
| WATER ISLAND CAPITAL LLC 2.24% of their portfolio | 480.2k $24.6m | Added +131.4k |
| REINHART PARTNERS, LLC. 1.15% of their portfolio | 430.5k $22.1m | New |
| Westchester Capital Management, LLC 0.73% of their portfolio | 411.7k $21.1m | New |
| HERALD INVESTMENT MANAGEMENT Ltd 4.19% of their portfolio | 384.9k $19.7m | Unchanged |
| Balyasny Asset Management L.P. 0.05% of their portfolio | 364.9k $18.7m | Reduced -91.8k |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.08% of their portfolio | 348.2k $17.8m | Reduced -413.7k |
| D. E. Shaw & Co., Inc. 0.03% of their portfolio | 332.0k $17.0m | Reduced -471.2k |
| BANK OF MONTREAL /CAN/ 0.01% of their portfolio | 327.2k $17.0m | New |
| Clearline Capital LP 1.65% of their portfolio | 325.4k $16.7m | New |
| Grantham, Mayo, Van Otterloo & Co. LLC 0.08% of their portfolio | 318.4k $16.3m | Reduced -31.8k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.01% of their portfolio | 302.7k $15.5m | New |
| STATE OF WISCONSIN INVESTMENT BOARD 0.05% of their portfolio | 292.7k $15.0m | Added +32.6k |
| P SCHOENFELD ASSET MANAGEMENT LP 1.88% of their portfolio | 287.5k $14.7m | Added +250.0k |
| Beryl Capital Management LLC 1.79% of their portfolio | 274.3k $14.1m | Reduced -688.6k |
| Taconic Capital Advisors LP 0.80% of their portfolio | 270.0k $13.8m | Added +270.0k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 258.9k $13.3m | Reduced -97.7k |
| BlackRock Inc. 0.00% of their portfolio | 250.5k $12.8m | Added +229.2k |
| EASTERLY INVESTMENT PARTNERS LLC 1.35% of their portfolio | 240.0k $12.3m | Added +85.6k |
| Nokomis Capital, L.L.C. 4.29% of their portfolio | 213.3k $10.9m | Added +157.7k |
| HEARTLAND ADVISORS INC 0.58% of their portfolio | 200.0k $10.2m | Added +50.0k |
| UBS Group AG 0.00% of their portfolio | 195.7k $10.0m | Reduced -59.1k |
| ACADIAN ASSET MANAGEMENT LLC 0.04% of their portfolio | 187.7k $9.6m | Added +167.5k |
| SYSTEMATIC FINANCIAL MANAGEMENT LP 0.29% of their portfolio | 176.2k $9.0m | Reduced -298.9k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 167.2k $8.6m | Added +47.0k |
| Pertento Partners LLP 1.91% of their portfolio | 167.0k $8.6m | New |
| FMR LLC 0.00% of their portfolio | 162.0k $8.3m | Added +59.9k |
| MANGROVE PARTNERS IM, LLC 0.58% of their portfolio | 149.3k $7.7m | New |
| GROUP ONE TRADING LLC 0.30% of their portfolio | 147.0k $7.5m | Reduced -75.0k |
| Sand Grove Capital Management LLP 1.06% of their portfolio | 144.5k $7.4m | Reduced -477.9k |
| Berry Street Capital Management LLP 3.02% of their portfolio | 137.5k $7.0m | Reduced -118.8k |
| M&G INVESTMENT MANAGEMENT LTD 0.05% of their portfolio | 137.4k $7.0m | Reduced -75.9k |
| Squarepoint Ops LLC 0.03% of their portfolio | 134.7k $6.9m | Added +85.0k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.01% of their portfolio | 129.2k $6.6m | Reduced -33.6k |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 128.4k $6.6m | Reduced -1.2m |
| MASO CAPITAL PARTNERS Ltd 3.18% of their portfolio | 113.9k $5.8m | Reduced -21.4k |
| CastleKnight Management LP 0.99% of their portfolio | 113.2k $5.8m | New |
| NATIXIS 0.04% of their portfolio | 107.9k $5.5m | Added +79.7k |
| Prospect Capital Advisors, LLC 2.25% of their portfolio | 102.8k $5.3m | Reduced -137.6k |
| CAPSTONE INVESTMENT ADVISORS, LLC 0.14% of their portfolio | 100.0k $5.1m | New |
| THOMPSON SIEGEL & WALMSLEY LLC 0.08% of their portfolio | 95.7k $4.9m | Added +10.6k |
| Perpetual Ltd 0.05% of their portfolio | 89.9k $4.6m | Added +12.0k |
| Hunting Hill Global Capital, LLC 2.14% of their portfolio | 88.7k $4.5m | Added +62.9k |
| Twin Securities, Inc. 1.26% of their portfolio | 81.2k $4.2m | New |
| Quinn Opportunity Partners LLC 0.53% of their portfolio | 78.3k $4.0m | New |
| STATE STREET CORP 0.00% of their portfolio | 77.9k $4.0m | Added +27.7k |
| Ramirez Asset Management, Inc. 0.86% of their portfolio | 77.8k $4.0m | First filing |
| Janney Montgomery Scott LLC 0.01% of their portfolio | 72.8k $3.7m | Added +5.5k |
| LMR Partners LLP 0.08% of their portfolio | 71.5k $3.7m | Reduced -237.6k |
| HRT FINANCIAL LP 0.04% of their portfolio | 70.5k $3.6m | New |
| GABELLI FUNDS LLC 0.03% of their portfolio | 64.7k $3.3m | Added +23.5k |
| GABELLI & Co INVESTMENT ADVISERS, INC. 0.51% of their portfolio | 60.9k $3.1m | Added +34.1k |
| Zweig-DiMenna Associates LLC 0.37% of their portfolio | 60.5k $3.1m | New |
| Virtus Family Office LLC 5.16% of their portfolio | 55.4k $2.8m | Added +5.3k |
| Verition Fund Management LLC 0.04% of their portfolio | 55.4k $2.8m | Reduced -71.3k |
| Alberta Investment Management Corp 0.03% of their portfolio | 54.0k $2.8m | New |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 51.1k $2.6m | Added +16.4k |
| BARCLAYS PLC 0.00% of their portfolio | 50.5k $2.6m | Reduced -43.0k |
| 272 Capital LP 1.00% of their portfolio | 49.3k $2.5m | Reduced -51.3k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 46.8k $2.4m | Added +25.8k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 44.2k $2.3m | Reduced -503.0k |
| Point72 Asset Management, L.P. 0.01% of their portfolio | 40.7k $2.1m | New |
| RENAISSANCE GROUP LLC 0.09% of their portfolio | 38.0k $1.9m | Added +11.3k |
| K2 PRINCIPAL FUND, L.P. 0.55% of their portfolio | 36.0k $1.8m | New |
| Handelsbanken Fonder AB 0.01% of their portfolio | 35.5k $1.8m | Unchanged |
| Skylands Capital, LLC 0.27% of their portfolio | 35.2k $1.8m | Added +11.2k |
| Man Group plc 0.01% of their portfolio | 35.1k $1.8m | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 34.7k $1.8m | Added +589 |
| SG Americas Securities, LLC 0.02% of their portfolio | 34.0k $1.7m | Reduced -37.0k |
| EQUITEC PROPRIETARY MARKETS, LLC 1.75% of their portfolio | 33.9k $1.7m | Added +6.0k |
| Robeco Institutional Asset Management B.V. 0.00% of their portfolio | 33.7k $1.7m | Reduced -3.4k |
| Force Hill Capital Management LP 1.48% of their portfolio | 33.4k $1.7m | Reduced -9.9k |
| PRELUDE CAPITAL MANAGEMENT, LLC 0.15% of their portfolio | 32.7k $1.7m | Added +3.9k |
| OAK ASSOCIATES LTD /OH/ 0.13% of their portfolio | 30.8k $1.6m | Reduced -3.0k |
| Samson Rock Capital LLP 0.50% of their portfolio | 30.0k $1.5m | Reduced -60.0k |
| ABN AMRO INVESTMENT SOLUTIONS 0.03% of their portfolio | 29.5k $1.5m | Reduced -17.7k |
| Centiva Capital, LP 0.07% of their portfolio | 29.0k $1.5m | Added +6.8k |
| TWO SIGMA ADVISERS, LP 0.00% of their portfolio | 27.6k $1.4m | Reduced -172.4k |
| FIFTH LANE CAPITAL, LP 1.99% of their portfolio | 27.5k $2.0m | Unchanged |
| Jump Financial, LLC 0.05% of their portfolio | 26.0k $1.3m | New |
| HARVEST MANAGEMENT LLC 0.73% of their portfolio | 25.0k $1.3m | Reduced -7.5k |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 23.8k $488.0k | Added +19.1k |
| Athos Capital Ltd 0.64% of their portfolio | 21.4k $1.1k | New |