Vault-13

SILICON MOTION TECHNOLOGY CO SIMO

SPONSORED ADR · ADR · CUSIP 82706C108 · ISIN US82706C1080

American-Taiwanese electronics technology company

213 institutional holders +7 vs Q4 2023
27,737,07227.7m shares reported held*
$2.1bnreported value*
42 new 75 added 71 reduced 32 sold out net bought ≈ $40.1m (+520.8k 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 ($11.5m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $76.94. Options: 13 managers hold calls ($54.8m notional), 12 hold puts ($35.7m).

Trends to Q1 2024

Institutional holders

Managers reporting a position, each quarter

0100200300Q3 22: 202Q4 22: 198Q1 23: 198Q2 23: 203Q3 23: 195Q4 23: 206Q1 24: 213213Q3 22Q1 23Q3 23Q1 24
Numbers
QuarterHolders
Q3 2022202
Q4 2022198
Q1 2023198
Q2 2023203
Q3 2023195
Q4 2023206
Q1 2024213

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 23Q1 24: 117 bought or addedQ1 24: 103 cut or sold outQ1 24
Numbers
QuarterBought or addedCut or sold out
Q4 202211098
Q1 202310098
Q2 202386116
Q3 2023110118
Q4 202312190
Q1 2024117103

Calls vs puts

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

CallsPuts
$0$200m$400m$600mQ2 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 0.48Q1 24 calls: $54.8mQ1 24 puts: $35.7mQ1 24P/C 0.65
Numbers
QuarterCallsPutsP/C
Q2 2023$428.6m$459.5m1.07
Q3 2023$108.4m$69.6m0.64
Q4 2023$87.2m$42.1m0.48
Q1 2024$54.8m$35.7m0.65

Biggest buyers

LORD, ABBETT & CO. LLC New +1,395,258+1.4m
ACADIAN ASSET MANAGEMENT LLC Added +825,394+825.4k
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Added +707,160+707.2k
FARALLON CAPITAL MANAGEMENT, L.L.C. Added +608,949+608.9k
FMR LLC Added +390,022+390.0k
LMR Partners LLP New +350,000+350.0k
HAWK RIDGE CAPITAL MANAGEMENT LP Added +348,769+348.8k
WELLINGTON MANAGEMENT GROUP LLP Added +318,286+318.3k
VOYA INVESTMENT MANAGEMENT LLC New +313,050+313.1k
MANUFACTURERS LIFE INSURANCE COMPANY, THE New +262,407+262.4k

Biggest sellers

MORGAN STANLEY Reduced -1,573,873-1.6m
COOPER CREEK PARTNERS MANAGEMENT LLC Sold out -667,463-667.5k
Segantii Capital Management Ltd Reduced -522,673-522.7k
ALPINE ASSOCIATES MANAGEMENT INC. Reduced -520,893-520.9k
CITADEL ADVISORS LLC Reduced -310,051-310.1k
MILLENNIUM MANAGEMENT LLC Reduced -267,689-267.7k
Melqart Asset Management (UK) Ltd Reduced -257,092-257.1k
Balyasny Asset Management L.P. Reduced -248,440-248.4k
Hudson Bay Capital Management LP Reduced -242,431-242.4k
JANE STREET GROUP, LLC Reduced -230,311-230.3k

Biggest calls

SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $11.4m148.1k shares
Pertento Partners LLP New $8.5m110.0k shares
CastleKnight Management LP Unchanged $7.7m100.0k shares
PEAK6 Investments LLC Reduced $5.7m74.5k shares
GROUP ONE TRADING LLC Reduced $4.8m62.1k shares
CITADEL ADVISORS LLC Added $4.1m53.9k shares
JANE STREET GROUP, LLC Reduced $3.7m48.1k shares
SIMPLEX TRADING, LLC Reduced $3.6m47.3k shares
Walleye Trading LLC Added $3.3m42.5k shares
WOLVERINE TRADING, LLC New $1.2m15.5k shares

Biggest puts

SIMPLEX TRADING, LLC Reduced $10.4m135.7k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $6.7m87.3k shares
Walleye Trading LLC Reduced $6.4m83.4k shares
CITADEL ADVISORS LLC Added $4.2m55.1k shares
JANE STREET GROUP, LLC Added $2.7m35.2k shares
GROUP ONE TRADING LLC Reduced $1.8m23.5k shares
PEAK6 Investments LLC Reduced $1.7m22.7k shares
Walleye Capital LLC Reduced $1.1m14.7k shares
WOLVERINE TRADING, LLC New $400.1k5.2k shares
SUMMIT SECURITIES GROUP LLC New $77.0k1.0k 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 Q1 2024

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 2024.

Holders, Q1 2024

#ManagerLocationShares Value% of their portfolioChangeShares change
1 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 1,857,6691.9m $142.9m $142.9m 0.00% Reduced -1.6m -1,573,873
2 LORD, ABBETT & CO. LLC 0.17% of their portfolio JERSEY CITY, NJ 1,395,2581.4m $107.4m $107.4m 0.17% New
3 ACADIAN ASSET MANAGEMENT LLC 0.36% of their portfolio Boston, MA 1,336,4481.3m $102.8m $102.8m 0.36% Added +825.4k +825,394
4 HAWK RIDGE CAPITAL MANAGEMENT LP 4.49% of their portfolio LOS ANGELES, CA 1,293,3281.3m $99.5m $99.5m 4.49% Added +348.8k +348,769
5 WELLINGTON MANAGEMENT GROUP LLP 0.02% of their portfolio Boston, MA 1,137,8221.1m $87.5m $87.5m 0.02% Added +318.3k +318,286
6 FMR LLC 0.01% of their portfolio BOSTON, MA 974,523974.5k $75.0m $75.0m 0.01% Added +390.0k +390,022
7 FARALLON CAPITAL MANAGEMENT, L.L.C. 0.39% of their portfolio SAN FRANCISCO, CA 855,449855.4k $65.8m $65.8m 0.39% Added +608.9k +608,949
8 ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.06% of their portfolio BOSTON, MA 797,759797.8k $61.4m $61.4m 0.06% Added +707.2k +707,160
9 REINHART PARTNERS, LLC. 2.31% of their portfolio MEQUON, WI 736,371736.4k $56.7m $56.7m 2.31% Added +35.6k +35,623
10 MILLENNIUM MANAGEMENT LLC 0.04% of their portfolio NEW YORK, NY 686,739686.7k $52.8m $52.8m 0.04% Reduced -267.7k -267,689
11 Erste Asset Management GmbH 0.71% of their portfolio VIENNA, C4 680,000680.0k $52.3m $52.3m 0.71% Unchanged
12 Invesco Ltd. 0.01% of their portfolio ATLANTA, GA 638,744638.7k $49.1m $49.1m 0.01% Added +13.4k +13,394
13 Pertento Partners LLP 9.21% of their portfolio LONDON, X0 595,375595.4k $45.8m $45.8m 9.21% Reduced -10.1k -10,094
14 Kodai Capital Management LP 0.99% of their portfolio CHICAGO, IL 548,684548.7k $42.2m $42.2m 0.99% Reduced -170.6k -170,643
15 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.01% of their portfolio Boston, MA 532,160532.2k $40.9m $40.9m 0.01% Added +1.4k +1,446
16 Melqart Asset Management (UK) Ltd 3.01% of their portfolio London, X0 526,669526.7k $40.5m $40.5m 3.01% Reduced -257.1k -257,092
17 ADAGE CAPITAL PARTNERS GP, L.L.C. 0.06% of their portfolio Boston, MA 442,121442.1k $34.0m $34.0m 0.06% Reduced -226.5k -226,510
18 ALPINE ASSOCIATES MANAGEMENT INC. 1.30% of their portfolio PALM BEACH, FL 434,621434.6k $33.4m $33.4m 1.30% Reduced -520.9k -520,893
19 HERALD INVESTMENT MANAGEMENT Ltd 4.80% of their portfolio LONDON, X0 384,906384.9k $29.6m $29.6m 4.80% Unchanged
20 SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 1.39% of their portfolio Boston, MA 377,987378.0k $29.1m $29.1m 1.39% Added +159.3k +159,287
21 WESTFIELD CAPITAL MANAGEMENT CO LP 0.15% of their portfolio BOSTON, MA 374,303374.3k $28.8m $28.8m 0.15% Reduced -33.8k -33,846
22 LMR Partners LLP 0.69% of their portfolio LONDON, X0 350,000350.0k $26.9m $26.9m 0.69% New
23 D. E. Shaw & Co., Inc. 0.03% of their portfolio New York, NY 339,327339.3k $26.1m $26.1m 0.03% Added +10.8k +10,794
24 BANK OF MONTREAL /CAN/ 0.01% of their portfolio TORONTO, A6 332,765332.8k $25.7m $25.7m 0.01% Reduced -50.7k -50,731
25 CITADEL ADVISORS LLC 0.02% of their portfolio MIAMI, FL 321,381321.4k $24.7m $24.7m 0.02% Reduced -310.1k -310,051
26 VOYA INVESTMENT MANAGEMENT LLC 0.02% of their portfolio ATLANTA, GA 313,050313.1k $24.1m $24.1m 0.02% New
27 SYSTEMATIC FINANCIAL MANAGEMENT LP 0.65% of their portfolio TEANECK, NJ 303,336303.3k $23.3m $23.3m 0.65% Added +25.0k +25,039
28 HEARTLAND ADVISORS INC 1.18% of their portfolio MILWAUKEE, WI 291,975292.0k $22.5m $22.5m 1.18% Reduced -35.9k -35,900
29 Prospect Capital Advisors, LLC 9.50% of their portfolio Sausalito, CA 277,400277.4k $21.3m $21.3m 9.50% Added +76.6k +76,600
30 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.02% of their portfolio Toronto, A6 262,407262.4k $20.2m $20.2m 0.02% New
31 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 258,848258.8k $19.9m $19.9m 0.00% Reduced -57.4k -57,446
32 UBS Group AG 0.01% of their portfolio ZURICH, V8 257,462257.5k $19.8m $19.8m 0.01% Reduced -16.2k -16,210
33 EASTERLY INVESTMENT PARTNERS LLC 1.45% of their portfolio BEVERLY, MA 246,397246.4k $19.0m $19.0m 1.45% Added +2.1k +2,128
34 WATER ISLAND CAPITAL LLC 2.12% of their portfolio NEW YORK, NY 242,792242.8k $18.7m $18.7m 2.12% Reduced -139.3k -139,255
35 Man Group plc 0.05% of their portfolio LONDON, X0 242,574242.6k $18.7m $18.7m 0.05% Added +48.2k +48,227
36 Taconic Capital Advisors LP 2.37% of their portfolio NEW YORK, NY 240,000240.0k $18.5m $18.5m 2.37% Reduced -30.0k -30,000
37 KENNEDY CAPITAL MANAGEMENT LLC 0.35% of their portfolio ST LOUIS, MO 220,906220.9k $17.0m $17.0m 0.35% Added +92.4k +92,386
38 Think Investments LP 3.78% of their portfolio San Francisco, CA 220,200220.2k $16.9m $16.9m 3.78% New
39 OBERWEIS ASSET MANAGEMENT INC/ 1.21% of their portfolio LISLE, IL 217,400217.4k $16.7m $16.7m 1.21% Added +141.0k +141,000
40 Granahan Investment Management, LLC 0.58% of their portfolio WALTHAM, MA 215,700215.7k $16.6m $16.6m 0.58% New
41 CANADA PENSION PLAN INVESTMENT BOARD 0.02% of their portfolio TORONTO ONTARIO, A6 203,500203.5k $15.7m $15.7m 0.02% Added +101.1k +101,100
42 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 195,851195.9k $15.1m $15.1m 0.00% Added +49.6k +49,619
43 TWO SIGMA INVESTMENTS, LP 0.04% of their portfolio NEW YORK, NY 194,230194.2k $14.9m $14.9m 0.04% Added +104.5k +104,523
44 Polar Asset Management Partners Inc. 0.38% of their portfolio TORONTO, A6 185,500185.5k $14.3m $14.3m 0.38% Added +15.4k +15,400
45 Balyasny Asset Management L.P. 0.03% of their portfolio Chicago, IL 177,133177.1k $13.6m $13.6m 0.03% Reduced -248.4k -248,440
46 Segantii Capital Management Ltd 1.32% of their portfolio HONG KONG, K3 175,000175.0k $13.5m $13.5m 1.32% Reduced -522.7k -522,673
47 Clearline Capital LP 1.31% of their portfolio NEW YORK, NY 172,768172.8k $13.3m $13.3m 1.31% Reduced -152.6k -152,599
48 TWO SIGMA ADVISERS, LP 0.03% of their portfolio NEW YORK, NY 163,081163.1k $12.5m $12.5m 0.03% Added +116.3k +116,300
49 Portolan Capital Management, LLC 0.94% of their portfolio BOSTON, MA 159,963160.0k $12.3m $12.3m 0.94% New
50 CastleKnight Management LP 1.80% of their portfolio New York, NY 159,075159.1k $12.2m $12.2m 1.80% Reduced -8.0k -8,000
51 SCHWARTZ INVESTMENT COUNSEL INC 0.42% of their portfolio PLYMOUTH, MI 150,000150.0k $11.5m $11.5m 0.42% New
52 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 145,312145.3k $11.2m $11.2m 0.00% Reduced -105.7k -105,702
53 ROYCE & ASSOCIATES LP 0.09% of their portfolio New York, NY 127,257127.3k $9.8m $9.8m 0.09% Added +25.7k +25,747
54 BlackRock Inc. 0.00% of their portfolio New York, NY 125,068125.1k $9.6m $9.6m 0.00% Added +4.1k +4,064
55 Russell Investments Group, Ltd. 0.01% of their portfolio Seattle, WA 114,457114.5k $8.8m $8.8m 0.01% Added +42.6k +42,650
56 Point72 Asset Management, L.P. 0.02% of their portfolio STAMFORD, CT 108,300108.3k $8.3m $8.3m 0.02% Added +76.7k +76,700
57 SILVERCREST ASSET MANAGEMENT GROUP LLC 0.06% of their portfolio NEW YORK, NY 106,456106.5k $8.2m $8.2m 0.06% New
58 NEUBERGER BERMAN GROUP LLC 0.01% of their portfolio NEW YORK, NY 106,014106.0k $8.2m $8.2m 0.01% New
59 MARSHALL WACE, LLP 0.01% of their portfolio LONDON, X0 105,569105.6k $8.1m $8.1m 0.01% Reduced -204.5k -204,462
60 Sand Grove Capital Management LLP 1.85% of their portfolio LONDON, X0 104,990105.0k $8.1m $8.1m 1.85% Reduced -14.2k -14,191
61 MASO CAPITAL PARTNERS Ltd 5.34% of their portfolio HONG KONG, K3 93,86793.9k $7.2m $7.2m 5.34% Reduced -20.0k -20,000
62 G2 Investment Partners Management LLC 1.87% of their portfolio New York, NY 91,15591.2k $7.0m $7.0m 1.87% New
63 272 Capital LP 2.74% of their portfolio DALLAS, TX 89,33389.3k $6.9m $6.9m 2.74% Added +15.1k +15,138
64 CAXTON ASSOCIATES LP 0.45% of their portfolio NEW YORK, NY 85,40785.4k $6.6m $6.6m 0.45% Added +28.4k +28,378
65 Janney Montgomery Scott LLC 0.02% of their portfolio PHILADELPHIA, PA 83,66383.7k $6.4m $6.4m 0.02% Added +10.5k +10,513
66 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 83,46483.5k $6.4m $6.4m 0.00% Added +2.6k +2,575
67 M&G PLC 0.04% of their portfolio London, X0 81,87181.9k $6.3m $6.3m 0.04% First filing
68 RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio NEW YORK, NY 80,27980.3k $6.2m $6.2m 0.01% Added +29.9k +29,900
69 Crestline Management, L.P. 0.58% of their portfolio FORT WORTH, TX 80,00080.0k $6.2m $6.2m 0.58% Reduced -10.3k -10,295
70 Cubist Systematic Strategies, LLC 0.07% of their portfolio STAMFORD, CT 79,39079.4k $6.1m $6.1m 0.07% Added +12.1k +12,057
71 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.02% of their portfolio TORONTO, A6 78,70078.7k $6.1m $6.1m 0.02% Reduced -147.5k -147,500
72 CAPITAL FUND MANAGEMENT S.A. 0.07% of their portfolio PARIS, I0 71,58171.6k $5.5m $5.5m 0.07% Reduced -5.4k -5,380
73 Ramirez Asset Management, Inc. 1.11% of their portfolio NEW YORK, NY 71,50771.5k $5.5m $5.5m 1.11% Added +989 +989
74 Alberta Investment Management Corp 0.06% of their portfolio EDMONTON, A0 70,80070.8k $5.4m $5.4m 0.06% Unchanged
75 THOMPSON SIEGEL & WALMSLEY LLC 0.08% of their portfolio RICHMOND, VA 70,01870.0k $5.4m $5.4m 0.08% Reduced -9.3k -9,307
76 NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio ALBANY, NY 65,49665.5k $5.0m $5.0m 0.01% Added +46.2k +46,169
77 BOOTHBAY FUND MANAGEMENT, LLC 0.14% of their portfolio NEW YORK, NY 65,20665.2k $5.0m $5.0m 0.14% Added +31.6k +31,618
78 Perpetual Ltd 0.05% of their portfolio SYDNEY, NEW SOUTH WALES, C3 63,12563.1k $4.8m $4.8m 0.05% Reduced -9.5k -9,500
79 Hudson Bay Capital Management LP 0.04% of their portfolio STAMFORD, CT 61,16261.2k $4.7m $4.7m 0.04% Reduced -242.4k -242,431
80 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 57,32157.3k $4.4m $4.4m 0.00% Added +4.7k +4,703
81 SEI INVESTMENTS CO 0.01% of their portfolio OAKS, PA 56,03956.0k $4.3m $4.3m 0.01% Added +37.8k +37,806
82 Virtus Family Office LLC 6.38% of their portfolio EL PASO, TX 51,94751.9k $4.0m $4.0m 6.38% Added +191 +191
83 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 50,34950.3k $3.9m $3.9m 0.00% Reduced -319 -319
84 Walleye Capital LLC 0.04% of their portfolio NEW YORK, NY 50,16850.2k $3.9m $3.9m 0.04% Added +28.6k +28,636
85 GABELLI & Co INVESTMENT ADVISERS, INC. 0.65% of their portfolio Rye, NY 48,90948.9k $3.8m $3.8m 0.65% Reduced -10.5k -10,500
86 Trexquant Investment LP 0.07% of their portfolio STAMFORD, CT 47,96748.0k $3.7m $3.7m 0.07% Reduced -9.9k -9,896
87 GABELLI FUNDS LLC 0.03% of their portfolio Rye, NY 47,95048.0k $3.7m $3.7m 0.03% Reduced -11.4k -11,442
88 Employees Retirement System of Texas 0.04% of their portfolio AUSTIN, TX 45,96446.0k $3.5m $3.5m 0.04% Added +43.1k +43,058
89 Roubaix Capital, LLC 2.22% of their portfolio DENVER, CO 45,73245.7k $3.5m $3.5m 2.22% Added +3.0k +2,989
90 Manatuck Hill Partners, LLC 1.52% of their portfolio WESTPORT, CT 45,00045.0k $3.5m $3.5m 1.52% Added +15.0k +15,000
91 Resolute Capital Asset Partners LLC 1.81% of their portfolio DENVER, CO 45,00045.0k $3.5m $3.5m 1.81% New
92 RENAISSANCE GROUP LLC 0.12% of their portfolio Covington, KY 42,41042.4k $3.3m $3.3m 0.12% Added +1.9k +1,865
93 NATIXIS 0.02% of their portfolio PARIS, I0 41,52041.5k $3.2m $3.2m 0.02% Reduced -37.3k -37,334
94 Robeco Institutional Asset Management B.V. 0.01% of their portfolio ROTTERDAM, P7 41,31341.3k $3.2m $3.2m 0.01% Unchanged
95 Skylands Capital, LLC 0.41% of their portfolio Milwaukee, WI 38,90038.9k $3.0m $3.0m 0.41% Reduced -3.2k -3,200
96 SG Americas Securities, LLC 0.01% of their portfolio NEW YORK, NY 37,91637.9k $2.9m $2.9m 0.01% Added +3.9k +3,899
97 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 34,98435.0k $2.7m $2.7m 0.00% Added +130 +130
98 Walleye Trading LLC 0.04% of their portfolio NEW YORK, NY 33,16033.2k $2.6m $2.6m 0.04% Added +30.0k +29,986
99 Quinn Opportunity Partners LLC 0.28% of their portfolio CHARLOTTESVILLE, VA 32,70532.7k $2.5m $2.5m 0.28% Reduced -51.9k -51,851
100 OAK ASSOCIATES LTD /OH/ 0.16% of their portfolio AKRON, OH 30,81030.8k $2.4m $2.4m 0.16% Unchanged