Vault-13

SILICON MOTION TECHNOLOGY CO SIMO

SPONSORED ADR · ADR · CUSIP 82706C108 · ISIN US82706C1080

American-Taiwanese electronics technology company

206 institutional holders +11 vs Q3 2023
28,514,21828.5m shares reported held*
$1.7bnreported value*
42 new 79 added 55 reduced 35 sold out net bought ≈ $162.7m (+2.7m shares)

* 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

0100200300Q3 22: 202Q4 22: 198Q1 23: 198Q2 23: 203Q3 23: 195Q4 23: 206206Q3 22Q4 22Q1 23Q2 23Q3 23Q4 23
Numbers
QuarterHolders
Q3 2022202
Q4 2022198
Q1 2023198
Q2 2023203
Q3 2023195
Q4 2023206

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
2000200Q4 22: 110 bought or addedQ4 22: 98 cut or sold outQ4 22Q1 23: 100 bought or addedQ1 23: 98 cut or sold outQ1 23Q2 23: 86 bought or addedQ2 23: 116 cut or sold outQ2 23Q3 23: 110 bought or addedQ3 23: 118 cut or sold outQ3 23Q4 23: 121 bought or addedQ4 23: 90 cut or sold outQ4 23
Numbers
QuarterBought or addedCut or sold out
Q4 202211098
Q1 202310098
Q2 202386116
Q3 2023110118
Q4 202312190

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$200m$400m$600mQ1 23 calls: $166.8mQ1 23 puts: $207.9mQ1 23P/C 1.25Q2 23 calls: $428.6mQ2 23 puts: $459.5mQ2 23P/C 1.07Q3 23 calls: $108.4mQ3 23 puts: $69.6mQ3 23P/C 0.64Q4 23 calls: $87.2mQ4 23 puts: $42.1mQ4 23P/C 0.48
Numbers
QuarterCallsPutsP/C
Q1 2023$166.8m$207.9m1.25
Q2 2023$428.6m$459.5m1.07
Q3 2023$108.4m$69.6m0.64
Q4 2023$87.2m$42.1m0.48

Biggest buyers

MORGAN STANLEY Added +2,784,567+2.8m
MILLENNIUM MANAGEMENT LLC Added +826,037+826.0k
Pertento Partners LLP Added +438,469+438.5k
FMR LLC Added +422,540+422.5k
WESTFIELD CAPITAL MANAGEMENT CO LP New +408,149+408.1k
ACADIAN ASSET MANAGEMENT LLC Added +323,345+323.3k
GOLDMAN SACHS GROUP INC Added +272,103+272.1k
REINHART PARTNERS, LLC. Added +270,202+270.2k
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Added +228,033+228.0k
JANE STREET GROUP, LLC Added +218,767+218.8k

Biggest sellers

FARALLON CAPITAL MANAGEMENT, L.L.C. Reduced -798,500-798.5k
Hudson Bay Capital Management LP Reduced -704,075-704.1k
HBK INVESTMENTS L P Reduced -533,400-533.4k
Davidson Kempner Capital Management LP Reduced -435,067-435.1k
Westchester Capital Management, LLC Sold out -411,699-411.7k
TIG Advisors, LLC Reduced -359,171-359.2k
MARSHALL WACE, LLP Reduced -287,230-287.2k
Beryl Capital Management LLC Reduced -209,636-209.6k
CITADEL ADVISORS LLC Reduced -184,758-184.8k
Grantham, Mayo, Van Otterloo & Co. LLC Reduced -162,200-162.2k

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.

HolderStakeChangeShares Last filed
FMR LLC 13G · institution -3.3 pts · filed 2026-08-06 6.7% -3.3 pts 9.1m 2026-08-06

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

#ManagerLocationShares Value% of their portfolioChangeShares change
1 MORGAN STANLEY 0.01% of their portfolio NEW YORK, NY 3,431,5423.4m $210.3m $210.3m 0.01% Added +2.8m +2,784,567
2 ALPINE ASSOCIATES MANAGEMENT INC. 3.00% of their portfolio PALM BEACH, FL 955,514955.5k $58.5m $58.5m 3.00% Added +3.3k +3,300
3 MILLENNIUM MANAGEMENT LLC 0.06% of their portfolio NEW YORK, NY 954,428954.4k $58.5m $58.5m 0.06% Added +826.0k +826,037
4 HAWK RIDGE CAPITAL MANAGEMENT LP 3.31% of their portfolio LOS ANGELES, CA 944,559944.6k $57.9m $57.9m 3.31% Unchanged
5 WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio Boston, MA 819,536819.5k $50.2m $50.2m 0.01% Added +247 +247
6 Melqart Asset Management (UK) Ltd 3.87% of their portfolio London, X0 783,761783.8k $48.0m $48.0m 3.87% Reduced -28.1k -28,085
7 HBK INVESTMENTS L P 1.12% of their portfolio DALLAS, TX 766,600766.6k $47.0m $47.0m 1.12% Reduced -533.4k -533,400
8 Kodai Capital Management LP 0.90% of their portfolio CHICAGO, IL 719,327719.3k $44.1m $44.1m 0.90% First filing
9 REINHART PARTNERS, LLC. 1.89% of their portfolio MEQUON, WI 700,748700.7k $42.9m $42.9m 1.89% Added +270.2k +270,202
10 Segantii Capital Management Ltd 2.59% of their portfolio HONG KONG, K3 697,673697.7k $42.7m $42.7m 2.59% Reduced -136.3k -136,318
11 Erste Asset Management GmbH 0.61% of their portfolio VIENNA, C4 680,000680.0k $41.7m $41.7m 0.61% Added +130.0k +130,000
12 ADAGE CAPITAL PARTNERS GP, L.L.C. 0.08% of their portfolio Boston, MA 668,631668.6k $41.0m $41.0m 0.08% Added +86.9k +86,855
13 COOPER CREEK PARTNERS MANAGEMENT LLC 2.15% of their portfolio NEW YORK, NY 667,463667.5k $40.9m $40.9m 2.15% Reduced -93.1k -93,091
14 CITADEL ADVISORS LLC 0.04% of their portfolio MIAMI, FL 631,432631.4k $38.7m $38.7m 0.04% Reduced -184.8k -184,758
15 Invesco Ltd. 0.01% of their portfolio ATLANTA, GA 625,350625.4k $38.3m $38.3m 0.01% Added +489 +489
16 Pertento Partners LLP 7.02% of their portfolio LONDON, X0 605,469605.5k $37.1m $37.1m 7.02% Added +438.5k +438,469
17 FMR LLC 0.00% of their portfolio BOSTON, MA 584,501584.5k $35.8m $35.8m 0.00% Added +422.5k +422,540
18 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.01% of their portfolio Boston, MA 530,714530.7k $32.5m $32.5m 0.01% Added +228.0k +228,033
19 ACADIAN ASSET MANAGEMENT LLC 0.12% of their portfolio Boston, MA 511,054511.1k $31.3m $31.3m 0.12% Added +323.3k +323,345
20 Balyasny Asset Management L.P. 0.07% of their portfolio Chicago, IL 425,573425.6k $26.1m $26.1m 0.07% Added +60.6k +60,623
21 WESTFIELD CAPITAL MANAGEMENT CO LP 0.15% of their portfolio BOSTON, MA 408,149408.1k $25.0m $25.0m 0.15% New
22 HERALD INVESTMENT MANAGEMENT Ltd 4.50% of their portfolio LONDON, X0 384,906384.9k $23.6m $23.6m 4.50% Unchanged
23 BANK OF MONTREAL /CAN/ 0.01% of their portfolio TORONTO, A6 383,496383.5k $23.6m $23.6m 0.01% Added +56.3k +56,291
24 WATER ISLAND CAPITAL LLC 2.40% of their portfolio NEW YORK, NY 382,047382.0k $23.4m $23.4m 2.40% Reduced -98.2k -98,201
25 Davidson Kempner Capital Management LP 0.40% of their portfolio New York, NY 372,717372.7k $22.8m $22.8m 0.40% Reduced -435.1k -435,067
26 D. E. Shaw & Co., Inc. 0.03% of their portfolio New York, NY 328,533328.5k $20.1m $20.1m 0.03% Reduced -3.5k -3,468
27 HEARTLAND ADVISORS INC 1.05% of their portfolio MILWAUKEE, WI 327,875327.9k $20.1m $20.1m 1.05% Added +127.9k +127,875
28 Clearline Capital LP 2.23% of their portfolio NEW YORK, NY 325,367325.4k $19.9m $19.9m 2.23% Unchanged
29 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 316,294316.3k $19.4m $19.4m 0.00% Added +272.1k +272,103
30 MARSHALL WACE, LLP 0.04% of their portfolio LONDON, X0 310,031310.0k $19.0m $19.0m 0.04% Reduced -287.2k -287,230
31 Hudson Bay Capital Management LP 0.16% of their portfolio STAMFORD, CT 303,593303.6k $18.6m $18.6m 0.16% Reduced -704.1k -704,075
32 SYSTEMATIC FINANCIAL MANAGEMENT LP 0.51% of their portfolio TEANECK, NJ 278,297278.3k $17.1m $17.1m 0.51% Added +102.1k +102,092
33 UBS Group AG 0.01% of their portfolio ZURICH, V8 273,672273.7k $16.8m $16.8m 0.01% Added +78.0k +78,006
34 Taconic Capital Advisors LP 1.59% of their portfolio NEW YORK, NY 270,000270.0k $16.5m $16.5m 1.59% Unchanged
35 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 251,014251.0k $15.4m $15.4m 0.00% Added +83.8k +83,767
36 FARALLON CAPITAL MANAGEMENT, L.L.C. 0.09% of their portfolio SAN FRANCISCO, CA 246,500246.5k $15.1m $15.1m 0.09% Reduced -798.5k -798,500
37 EASTERLY INVESTMENT PARTNERS LLC 1.60% of their portfolio BEVERLY, MA 244,269244.3k $15.0m $15.0m 1.60% Added +4.3k +4,293
38 JANE STREET GROUP, LLC 0.02% of their portfolio NEW YORK, NY 236,340236.3k $14.5m $14.5m 0.02% Added +218.8k +218,767
39 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.05% of their portfolio TORONTO, A6 226,200226.2k $13.9m $13.9m 0.05% Reduced -122.0k -122,000
40 SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 0.73% of their portfolio Boston, MA 218,700218.7k $13.4m $13.4m 0.73% New
41 M&G INVESTMENT MANAGEMENT LTD 0.08% of their portfolio London, X0 206,317206.3k $12.6m $12.6m 0.08% Added +69.0k +68,957
42 Prospect Capital Advisors, LLC 4.47% of their portfolio Sausalito, CA 200,800200.8k $12.3m $12.3m 4.47% Added +98.0k +98,050
43 TIG Advisors, LLC 1.80% of their portfolio New York, NY 196,214196.2k $12.0m $12.0m 1.80% Reduced -359.2k -359,171
44 Man Group plc 0.03% of their portfolio LONDON, X0 194,347194.3k $11.9m $11.9m 0.03% New
45 STATE OF WISCONSIN INVESTMENT BOARD 0.03% of their portfolio MADISON, WI 178,609178.6k $10.9m $10.9m 0.03% Reduced -114.1k -114,100
46 P SCHOENFELD ASSET MANAGEMENT LP 3.03% of their portfolio NEW YORK, NY 177,354177.4k $10.9m $10.9m 3.03% Reduced -110.1k -110,146
47 Polar Asset Management Partners Inc. 0.28% of their portfolio TORONTO, A6 170,100170.1k $10.4m $10.4m 0.28% Added +160.1k +160,100
48 CastleKnight Management LP 1.64% of their portfolio New York, NY 167,075167.1k $10.2m $10.2m 1.64% Added +53.9k +53,875
49 Grantham, Mayo, Van Otterloo & Co. LLC 0.04% of their portfolio Boston, MA 156,200156.2k $9.6m $9.6m 0.04% Reduced -162.2k -162,200
50 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 146,232146.2k $9.0m $9.0m 0.00% Reduced -112.7k -112,678
51 Nokomis Capital, L.L.C. 3.22% of their portfolio DALLAS, TX 136,465136.5k $8.4m $8.4m 3.22% Reduced -76.8k -76,803
52 KENNEDY CAPITAL MANAGEMENT LLC 0.17% of their portfolio ST LOUIS, MO 128,520128.5k $7.9m $7.9m 0.17% New
53 BlackRock Inc. 0.00% of their portfolio New York, NY 121,004121.0k $7.4m $7.4m 0.00% Reduced -129.5k -129,483
54 Sand Grove Capital Management LLP 2.26% of their portfolio LONDON, X0 119,181119.2k $7.3m $7.3m 2.26% Reduced -25.3k -25,270
55 MASO CAPITAL PARTNERS Ltd 6.03% of their portfolio HONG KONG, K3 113,867113.9k $7.0m $7.0m 6.03% Unchanged
56 CANADA PENSION PLAN INVESTMENT BOARD 0.01% of their portfolio TORONTO ONTARIO, A6 102,400102.4k $6.3m $6.3m 0.01% Added +90.0k +90,000
57 ROYCE & ASSOCIATES LP 0.06% of their portfolio New York, NY 101,510101.5k $6.2m $6.2m 0.06% New
58 J. Goldman & Co LP 0.34% of their portfolio NEW YORK, NY 98,04998.0k $6.0m $6.0m 0.34% New
59 ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio BOSTON, MA 90,59990.6k $5.6m $5.6m 0.01% Added +71.4k +71,448
60 NATIONAL BANK OF CANADA /FI/ 0.01% of their portfolio MONTREAL, A8 90,35090.3k $5.4m $5.4m 0.01% Added +89.6k +89,600
61 Crestline Management, L.P. 0.51% of their portfolio FORT WORTH, TX 90,29590.3k $5.5m $5.5m 0.51% Added +82.3k +82,295
62 TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio NEW YORK, NY 89,70789.7k $5.5m $5.5m 0.01% Added +69.1k +69,073
63 Quinn Opportunity Partners LLC 0.60% of their portfolio CHARLOTTESVILLE, VA 84,55684.6k $5.2m $5.2m 0.60% Added +6.3k +6,289
64 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 80,88980.9k $5.0m $5.0m 0.00% Added +2.9k +2,942
65 THOMPSON SIEGEL & WALMSLEY LLC 0.08% of their portfolio RICHMOND, VA 79,32579.3k $4.9m $4.9m 0.08% Reduced -16.3k -16,325
66 NATIXIS 0.04% of their portfolio PARIS, I0 78,85478.9k $4.8m $4.8m 0.04% Reduced -29.0k -29,000
67 CAPITAL FUND MANAGEMENT S.A. 0.06% of their portfolio PARIS, I0 76,96177.0k $4.7m $4.7m 0.06% New
68 OBERWEIS ASSET MANAGEMENT INC/ 0.44% of their portfolio LISLE, IL 76,40076.4k $4.7m $4.7m 0.44% New
69 272 Capital LP 1.50% of their portfolio DALLAS, TX 74,19574.2k $4.4m $4.4m 1.50% Added +24.9k +24,900
70 Janney Montgomery Scott LLC 0.01% of their portfolio PHILADELPHIA, PA 73,15073.2k $4.5m $4.5m 0.01% Added +341 +341
71 Perpetual Ltd 0.05% of their portfolio SYDNEY, NEW SOUTH WALES, C3 72,62572.6k $4.4m $4.4m 0.05% Reduced -17.3k -17,300
72 Russell Investments Group, Ltd. 0.01% of their portfolio Seattle, WA 71,80771.8k $4.4m $4.4m 0.01% Added +69.7k +69,684
73 Alberta Investment Management Corp 0.04% of their portfolio EDMONTON, A0 70,80070.8k $4.3m $4.3m 0.04% Added +16.8k +16,800
74 Ramirez Asset Management, Inc. 0.88% of their portfolio NEW YORK, NY 70,51870.5k $4.3m $4.3m 0.88% Reduced -7.3k -7,265
75 Cubist Systematic Strategies, LLC 0.05% of their portfolio STAMFORD, CT 67,33367.3k $4.1m $4.1m 0.05% New
76 Beryl Capital Management LLC 2.18% of their portfolio REDONDO BEACH, CA 64,69464.7k $4.0m $4.0m 2.18% Reduced -209.6k -209,636
77 GABELLI & Co INVESTMENT ADVISERS, INC. 0.68% of their portfolio Rye, NY 59,40959.4k $3.6m $3.6m 0.68% Reduced -1.5k -1,500
78 GABELLI FUNDS LLC 0.03% of their portfolio Rye, NY 59,39259.4k $3.6m $3.6m 0.03% Reduced -5.3k -5,269
79 Trexquant Investment LP 0.08% of their portfolio STAMFORD, CT 57,86357.9k $3.5m $3.5m 0.08% Added +41.5k +41,487
80 CAXTON ASSOCIATES LP 0.18% of their portfolio NEW YORK, NY 57,02957.0k $3.5m $3.5m 0.18% New
81 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 52,61852.6k $3.2m $3.2m 0.00% Added +1.5k +1,530
82 Virtus Family Office LLC 5.31% of their portfolio EL PASO, TX 51,75651.8k $3.2m $3.2m 5.31% Reduced -3.7k -3,689
83 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 50,66850.7k $3.1m $3.1m 0.00% Added +3.9k +3,886
84 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 50,37950.4k $3.1m $3.1m 0.00% Added +35.8k +35,781
85 NOMURA HOLDINGS INC 0.03% of their portfolio TOKYO, M0 50,27150.3k $3.1m $3.1m 0.03% New
86 Jump Financial, LLC 0.10% of their portfolio Chicago, IL 48,27648.3k $3.0m $3.0m 0.10% Added +22.2k +22,250
87 TWO SIGMA ADVISERS, LP 0.01% of their portfolio NEW YORK, NY 46,78146.8k $2.9m $2.9m 0.01% Added +19.2k +19,181
88 Roubaix Capital, LLC 1.84% of their portfolio DENVER, CO 42,74342.7k $2.6m $2.6m 1.84% New
89 ABN AMRO INVESTMENT SOLUTIONS 0.05% of their portfolio PARIS CEDEX 008, I0 42,56542.6k $2.6m $2.6m 0.05% Added +13.1k +13,060
90 Skylands Capital, LLC 0.38% of their portfolio Milwaukee, WI 42,10042.1k $2.6m $2.6m 0.38% Added +6.9k +6,900
91 Robeco Institutional Asset Management B.V. 0.01% of their portfolio ROTTERDAM, P7 41,31341.3k $2.5m $2.5m 0.01% Added +7.6k +7,587
92 RENAISSANCE GROUP LLC 0.10% of their portfolio Covington, KY 40,54540.5k $2.5m $2.5m 0.10% Added +2.5k +2,508
93 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 34,85434.9k $2.1m $2.1m 0.00% Added +135 +135
94 SG Americas Securities, LLC 0.02% of their portfolio NEW YORK, NY 34,01734.0k $2.1m $2.1m 0.02% Unchanged
95 BOOTHBAY FUND MANAGEMENT, LLC 0.07% of their portfolio NEW YORK, NY 33,58833.6k $2.1m $2.1m 0.07% Added +15.1k +15,100
96 LAZARD ASSET MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 33,06433.1k $2.0m $2.0m 0.00% Added +30.3k +30,335
97 Point72 Asset Management, L.P. 0.01% of their portfolio STAMFORD, CT 31,60031.6k $1.9m $1.9m 0.01% Reduced -9.1k -9,092
98 OAK ASSOCIATES LTD /OH/ 0.14% of their portfolio AKRON, OH 30,81030.8k $1.9m $1.9m 0.14% Unchanged
99 Susquehanna Portfolio Strategies, LLC 0.03% of their portfolio Bala Cynwyd, PA 30,06730.1k $1.8m $1.8m 0.03% First filing
100 Manatuck Hill Partners, LLC 0.79% of their portfolio WESTPORT, CT 30,00030.0k $1.8m $1.8m 0.79% New