Vault-13

SILICON MOTION TECHNOLOGY CO SIMO

SPONSORED ADR · ADR · CUSIP 82706C108 · ISIN US82706C1080

American-Taiwanese electronics technology company

195 institutional holders -8 vs Q2 2023
26,090,84926.1m shares reported held*
$1.3bnreported value*
45 new 65 added 65 reduced 53 sold out net bought ≈ $111.9m (+2.1m 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 ($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

0100200300Q3 22: 202Q4 22: 198Q1 23: 198Q2 23: 203Q3 23: 195195Q3 22Q4 22Q1 23Q2 23Q3 23
Numbers
QuarterHolders
Q3 2022202
Q4 2022198
Q1 2023198
Q2 2023203
Q3 2023195

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 23
Numbers
QuarterBought or addedCut or sold out
Q4 202211098
Q1 202310098
Q2 202386116
Q3 2023110118

Calls vs puts

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

CallsPuts
$0$200m$400m$600mQ4 22 calls: $58.1mQ4 22 puts: $172.0mQ4 22P/C 2.96Q1 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 0.64
Numbers
QuarterCallsPutsP/C
Q4 2022$58.1m$172.0m2.96
Q1 2023$166.8m$207.9m1.25
Q2 2023$428.6m$459.5m1.07
Q3 2023$108.4m$69.6m0.64

Biggest buyers

Hudson Bay Capital Management LP Added +981,307+981.3k
CITADEL ADVISORS LLC Added +813,939+813.9k
WELLINGTON MANAGEMENT GROUP LLP Added +758,640+758.6k
Davidson Kempner Capital Management LP Added +681,390+681.4k
COOPER CREEK PARTNERS MANAGEMENT LLC Added +673,278+673.3k
Invesco Ltd. New +624,861+624.9k
Segantii Capital Management Ltd Added +533,991+534.0k
HBK INVESTMENTS L P Added +500,000+500.0k
REINHART PARTNERS, LLC. New +430,546+430.5k
Westchester Capital Management, LLC New +411,699+411.7k

Biggest sellers

MILLENNIUM MANAGEMENT LLC Reduced -1,210,243-1.2m
Beryl Capital Management LLC Reduced -688,562-688.6k
BLUEFIN CAPITAL MANAGEMENT, LLC Sold out -580,715-580.7k
CITIGROUP INC Reduced -508,326-508.3k
GOLDMAN SACHS GROUP INC Reduced -502,989-503.0k
Sand Grove Capital Management LLP Reduced -477,868-477.9k
D. E. Shaw & Co., Inc. Reduced -471,244-471.2k
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Reduced -413,700-413.7k
LAZARD ASSET MANAGEMENT LLC Reduced -405,796-405.8k
SYSTEMATIC FINANCIAL MANAGEMENT LP Reduced -298,941-298.9k

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.

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 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

#ManagerLocationShares Value% of their portfolioChangeShares change
1 HBK INVESTMENTS L P 1.48% of their portfolio DALLAS, TX 1,300,0001.3m $66.6m $66.6m 1.48% Added +500.0k +500,000
2 FARALLON CAPITAL MANAGEMENT, L.L.C. 0.30% of their portfolio SAN FRANCISCO, CA 1,045,0001.0m $53.6m $53.6m 0.30% Added +110.0k +110,000
3 Hudson Bay Capital Management LP 0.25% of their portfolio STAMFORD, CT 1,007,6681.0m $51.6m $51.6m 0.25% Added +981.3k +981,307
4 ALPINE ASSOCIATES MANAGEMENT INC. 2.56% of their portfolio PALM BEACH, FL 952,214952.2k $48.8m $48.8m 2.56% Added +381.6k +381,648
5 HAWK RIDGE CAPITAL MANAGEMENT LP 2.38% of their portfolio LOS ANGELES, CA 944,559944.6k $48.4m $48.4m 2.38% Added +365.5k +365,461
6 Segantii Capital Management Ltd 1.60% of their portfolio HONG KONG, K3 833,991834.0k $42.7m $42.7m 1.60% Added +534.0k +533,991
7 WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio Boston, MA 819,289819.3k $42.0m $42.0m 0.01% Added +758.6k +758,640
8 CITADEL ADVISORS LLC 0.05% of their portfolio MIAMI, FL 816,190816.2k $41.8m $41.8m 0.05% Added +813.9k +813,939
9 Kite Lake Capital Management (UK) LLP 4.33% of their portfolio LONDON, X0 813,416813.4k $41.7m $41.7m 4.33% Not comparable
10 Melqart Asset Management (UK) Ltd 2.97% of their portfolio London, X0 811,846811.8k $41.6m $41.6m 2.97% Added +45.8k +45,771
11 Davidson Kempner Capital Management LP 0.64% of their portfolio New York, NY 807,784807.8k $41.4m $41.4m 0.64% Added +681.4k +681,390
12 COOPER CREEK PARTNERS MANAGEMENT LLC 2.37% of their portfolio NEW YORK, NY 760,554760.6k $39.0m $39.0m 2.37% Added +673.3k +673,278
13 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 646,975647.0k $33.2m $33.2m 0.00% Reduced -148.1k -148,102
14 Invesco Ltd. 0.01% of their portfolio ATLANTA, GA 624,861624.9k $32.0m $32.0m 0.01% New
15 MARSHALL WACE, LLP 0.07% of their portfolio LONDON, X0 597,261597.3k $30.6m $30.6m 0.07% Added +184.2k +184,178
16 ADAGE CAPITAL PARTNERS GP, L.L.C. 0.07% of their portfolio Boston, MA 581,776581.8k $29.8m $29.8m 0.07% Added +189.7k +189,725
17 TIG Advisors, LLC 1.40% of their portfolio New York, NY 555,385555.4k $28.5m $28.5m 1.40% Reduced -75.5k -75,518
18 Erste Asset Management GmbH 0.49% of their portfolio VIENNA, C4 550,000550.0k $28.2m $28.2m 0.49% Added +46.0k +46,000
19 WATER ISLAND CAPITAL LLC 2.24% of their portfolio NEW YORK, NY 480,248480.2k $24.6m $24.6m 2.24% Added +131.4k +131,400
20 REINHART PARTNERS, LLC. 1.15% of their portfolio MEQUON, WI 430,546430.5k $22.1m $22.1m 1.15% New
21 Westchester Capital Management, LLC 0.73% of their portfolio VALHALLA, NY 411,699411.7k $21.1m $21.1m 0.73% New
22 HERALD INVESTMENT MANAGEMENT Ltd 4.19% of their portfolio LONDON, X0 384,906384.9k $19.7m $19.7m 4.19% Unchanged
23 Balyasny Asset Management L.P. 0.05% of their portfolio Chicago, IL 364,950364.9k $18.7m $18.7m 0.05% Reduced -91.8k -91,774
24 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.08% of their portfolio TORONTO, A6 348,200348.2k $17.8m $17.8m 0.08% Reduced -413.7k -413,700
25 D. E. Shaw & Co., Inc. 0.03% of their portfolio New York, NY 332,001332.0k $17.0m $17.0m 0.03% Reduced -471.2k -471,244
26 BANK OF MONTREAL /CAN/ 0.01% of their portfolio TORONTO, A6 327,205327.2k $17.0m $17.0m 0.01% New
27 Clearline Capital LP 1.65% of their portfolio NEW YORK, NY 325,367325.4k $16.7m $16.7m 1.65% New
28 Grantham, Mayo, Van Otterloo & Co. LLC 0.08% of their portfolio Boston, MA 318,400318.4k $16.3m $16.3m 0.08% Reduced -31.8k -31,819
29 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.01% of their portfolio Boston, MA 302,681302.7k $15.5m $15.5m 0.01% New
30 STATE OF WISCONSIN INVESTMENT BOARD 0.05% of their portfolio MADISON, WI 292,709292.7k $15.0m $15.0m 0.05% Added +32.6k +32,649
31 P SCHOENFELD ASSET MANAGEMENT LP 1.88% of their portfolio NEW YORK, NY 287,500287.5k $14.7m $14.7m 1.88% Added +250.0k +249,971
32 Beryl Capital Management LLC 1.79% of their portfolio REDONDO BEACH, CA 274,330274.3k $14.1m $14.1m 1.79% Reduced -688.6k -688,562
33 Taconic Capital Advisors LP 0.80% of their portfolio NEW YORK, NY 270,000270.0k $13.8m $13.8m 0.80% Added +270.0k +270,000
34 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 258,910258.9k $13.3m $13.3m 0.00% Reduced -97.7k -97,706
35 BlackRock Inc. 0.00% of their portfolio New York, NY 250,487250.5k $12.8m $12.8m 0.00% Added +229.2k +229,181
36 EASTERLY INVESTMENT PARTNERS LLC 1.35% of their portfolio BEVERLY, MA 239,976240.0k $12.3m $12.3m 1.35% Added +85.6k +85,593
37 Nokomis Capital, L.L.C. 4.29% of their portfolio DALLAS, TX 213,268213.3k $10.9m $10.9m 4.29% Added +157.7k +157,700
38 HEARTLAND ADVISORS INC 0.58% of their portfolio MILWAUKEE, WI 200,000200.0k $10.2m $10.2m 0.58% Added +50.0k +50,000
39 UBS Group AG 0.00% of their portfolio ZURICH, V8 195,666195.7k $10.0m $10.0m 0.00% Reduced -59.1k -59,142
40 ACADIAN ASSET MANAGEMENT LLC 0.04% of their portfolio Boston, MA 187,709187.7k $9.6m $9.6m 0.04% Added +167.5k +167,514
41 SYSTEMATIC FINANCIAL MANAGEMENT LP 0.29% of their portfolio TEANECK, NJ 176,205176.2k $9.0m $9.0m 0.29% Reduced -298.9k -298,941
42 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 167,247167.2k $8.6m $8.6m 0.00% Added +47.0k +46,992
43 Pertento Partners LLP 1.91% of their portfolio LONDON, X0 167,000167.0k $8.6m $8.6m 1.91% New
44 FMR LLC 0.00% of their portfolio BOSTON, MA 161,961162.0k $8.3m $8.3m 0.00% Added +59.9k +59,876
45 MANGROVE PARTNERS IM, LLC 0.58% of their portfolio Greenwich, CT 149,290149.3k $7.7m $7.7m 0.58% New
46 GROUP ONE TRADING LLC 0.30% of their portfolio CHICAGO, IL 146,991147.0k $7.5m $7.5m 0.30% Reduced -75.0k -74,994
47 Sand Grove Capital Management LLP 1.06% of their portfolio LONDON, X0 144,451144.5k $7.4m $7.4m 1.06% Reduced -477.9k -477,868
48 Berry Street Capital Management LLP 3.02% of their portfolio LONDON, X0 137,500137.5k $7.0m $7.0m 3.02% Reduced -118.8k -118,750
49 M&G INVESTMENT MANAGEMENT LTD 0.05% of their portfolio London, X0 137,360137.4k $7.0m $7.0m 0.05% Reduced -75.9k -75,917
50 Squarepoint Ops LLC 0.03% of their portfolio NEW YORK, NY 134,694134.7k $6.9m $6.9m 0.03% Added +85.0k +84,997
51 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.01% of their portfolio BALA CYNWYD, PA 129,185129.2k $6.6m $6.6m 0.01% Reduced -33.6k -33,628
52 MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 128,391128.4k $6.6m $6.6m 0.01% Reduced -1.2m -1,210,243
53 MASO CAPITAL PARTNERS Ltd 3.18% of their portfolio HONG KONG, K3 113,867113.9k $5.8m $5.8m 3.18% Reduced -21.4k -21,401
54 CastleKnight Management LP 0.99% of their portfolio New York, NY 113,200113.2k $5.8m $5.8m 0.99% New
55 NATIXIS 0.04% of their portfolio PARIS, I0 107,854107.9k $5.5m $5.5m 0.04% Added +79.7k +79,651
56 Prospect Capital Advisors, LLC 2.25% of their portfolio Sausalito, CA 102,750102.8k $5.3m $5.3m 2.25% Reduced -137.6k -137,600
57 CAPSTONE INVESTMENT ADVISORS, LLC 0.14% of their portfolio NEW YORK, NY 100,000100.0k $5.1m $5.1m 0.14% New
58 THOMPSON SIEGEL & WALMSLEY LLC 0.08% of their portfolio RICHMOND, VA 95,65095.7k $4.9m $4.9m 0.08% Added +10.6k +10,622
59 Perpetual Ltd 0.05% of their portfolio SYDNEY, NEW SOUTH WALES, C3 89,92589.9k $4.6m $4.6m 0.05% Added +12.0k +12,000
60 Hunting Hill Global Capital, LLC 2.14% of their portfolio New York, NY 88,71088.7k $4.5m $4.5m 2.14% Added +62.9k +62,889
61 Twin Securities, Inc. 1.26% of their portfolio New York, NY 81,23381.2k $4.2m $4.2m 1.26% New
62 Quinn Opportunity Partners LLC 0.53% of their portfolio CHARLOTTESVILLE, VA 78,26778.3k $4.0m $4.0m 0.53% New
63 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 77,94777.9k $4.0m $4.0m 0.00% Added +27.7k +27,651
64 Ramirez Asset Management, Inc. 0.86% of their portfolio NEW YORK, NY 77,78377.8k $4.0m $4.0m 0.86% First filing
65 Janney Montgomery Scott LLC 0.01% of their portfolio PHILADELPHIA, PA 72,80972.8k $3.7m $3.7m 0.01% Added +5.5k +5,493
66 LMR Partners LLP 0.08% of their portfolio LONDON, X0 71,46471.5k $3.7m $3.7m 0.08% Reduced -237.6k -237,553
67 HRT FINANCIAL LP 0.04% of their portfolio NEW YORK, NY 70,45170.5k $3.6m $3.6m 0.04% New
68 GABELLI FUNDS LLC 0.03% of their portfolio Rye, NY 64,66164.7k $3.3m $3.3m 0.03% Added +23.5k +23,500
69 GABELLI & Co INVESTMENT ADVISERS, INC. 0.51% of their portfolio Rye, NY 60,90960.9k $3.1m $3.1m 0.51% Added +34.1k +34,111
70 Zweig-DiMenna Associates LLC 0.37% of their portfolio NEW YORK, NY 60,50060.5k $3.1m $3.1m 0.37% New
71 Virtus Family Office LLC 5.16% of their portfolio EL PASO, TX 55,44555.4k $2.8m $2.8m 5.16% Added +5.3k +5,283
72 Verition Fund Management LLC 0.04% of their portfolio GREENWICH, CT 55,42255.4k $2.8m $2.8m 0.04% Reduced -71.3k -71,307
73 Alberta Investment Management Corp 0.03% of their portfolio EDMONTON, A0 54,00054.0k $2.8m $2.8m 0.03% New
74 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 51,08851.1k $2.6m $2.6m 0.00% Added +16.4k +16,411
75 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 50,52250.5k $2.6m $2.6m 0.00% Reduced -43.0k -42,992
76 272 Capital LP 1.00% of their portfolio DALLAS, TX 49,29549.3k $2.5m $2.5m 1.00% Reduced -51.3k -51,340
77 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 46,78246.8k $2.4m $2.4m 0.00% Added +25.8k +25,779
78 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 44,19144.2k $2.3m $2.3m 0.00% Reduced -503.0k -502,989
79 Point72 Asset Management, L.P. 0.01% of their portfolio STAMFORD, CT 40,69240.7k $2.1m $2.1m 0.01% New
80 RENAISSANCE GROUP LLC 0.09% of their portfolio Covington, KY 38,03738.0k $1.9m $1.9m 0.09% Added +11.3k +11,291
81 K2 PRINCIPAL FUND, L.P. 0.55% of their portfolio TORONTO, A6 36,00036.0k $1.8m $1.8m 0.55% New
82 Handelsbanken Fonder AB 0.01% of their portfolio STOCKHOLM, V7 35,50035.5k $1.8m $1.8m 0.01% Unchanged
83 Skylands Capital, LLC 0.27% of their portfolio Milwaukee, WI 35,20035.2k $1.8m $1.8m 0.27% Added +11.2k +11,200
84 Man Group plc 0.01% of their portfolio LONDON, X0 35,09735.1k $1.8m $1.8m 0.01% New
85 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 34,71934.7k $1.8m $1.8m 0.00% Added +589 +589
86 SG Americas Securities, LLC 0.02% of their portfolio NEW YORK, NY 34,01734.0k $1.7m $1.7m 0.02% Reduced -37.0k -36,983
87 EQUITEC PROPRIETARY MARKETS, LLC 1.75% of their portfolio CHICAGO, IL 33,89133.9k $1.7m $1.7m 1.75% Added +6.0k +6,000
88 Robeco Institutional Asset Management B.V. 0.00% of their portfolio ROTTERDAM, P7 33,72633.7k $1.7m $1.7m 0.00% Reduced -3.4k -3,362
89 Force Hill Capital Management LP 1.48% of their portfolio New York, NY 33,36933.4k $1.7m $1.7m 1.48% Reduced -9.9k -9,931
90 PRELUDE CAPITAL MANAGEMENT, LLC 0.15% of their portfolio NEW YORK, NY 32,74932.7k $1.7m $1.7m 0.15% Added +3.9k +3,852
91 OAK ASSOCIATES LTD /OH/ 0.13% of their portfolio AKRON, OH 30,81030.8k $1.6m $1.6m 0.13% Reduced -3.0k -3,000
92 Samson Rock Capital LLP 0.50% of their portfolio LONDON, X0 30,00030.0k $1.5m $1.5m 0.50% Reduced -60.0k -60,000
93 ABN AMRO INVESTMENT SOLUTIONS 0.03% of their portfolio PARIS CEDEX 008, I0 29,50529.5k $1.5m $1.5m 0.03% Reduced -17.7k -17,748
94 Centiva Capital, LP 0.07% of their portfolio New York, NY 28,98029.0k $1.5m $1.5m 0.07% Added +6.8k +6,769
95 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 27,60027.6k $1.4m $1.4m 0.00% Reduced -172.4k -172,381
96 FIFTH LANE CAPITAL, LP 1.99% of their portfolio Austin, TX 27,50027.5k $2.0m $2.0m 1.99% Unchanged
97 Jump Financial, LLC 0.05% of their portfolio Chicago, IL 26,02626.0k $1.3m $1.3m 0.05% New
98 HARVEST MANAGEMENT LLC 0.73% of their portfolio New York, NY 25,00025.0k $1.3m $1.3m 0.73% Reduced -7.5k -7,500
99 CANADA LIFE ASSURANCE Co 0.00% of their portfolio WINNIPEG, A2 23,83023.8k $488.0k $488.0k 0.00% Added +19.1k +19,064
100 Athos Capital Ltd 0.64% of their portfolio HONG KONG, K3 21,43321.4k $1.1k $1.1k 0.64% New