Vault-13

UNITED MICROELECTRONICS CORP UMC

SPON ADR NEW · ADR · CUSIP 910873405 · ISIN US9108734057

Semiconductor foundry company headquartered in Taiwan

238 institutional holders -4 vs Q1 2024
132,798,435132.8m shares reported held*
$1.2bnreported value*
28 new 89 added 72 reduced 34 sold out net sold ≈ $144.5m (-16.5m 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 ($1.5m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $8.76. Options: 11 managers hold calls ($12.7m notional), 8 hold puts ($7.0m).

Trends to Q2 2024

Institutional holders

Managers reporting a position, each quarter

0100200300Q3 22: 226Q4 22: 223Q1 23: 222Q2 23: 221Q3 23: 218Q4 23: 251Q1 24: 242Q2 24: 238238Q3 22Q1 23Q3 23Q1 24Q2 24
Numbers
QuarterHolders
Q3 2022226
Q4 2022223
Q1 2023222
Q2 2023221
Q3 2023218
Q4 2023251
Q1 2024242
Q2 2024238

Buyers vs sellers

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

Bought or addedCut or sold out
2000200Q4 22: 100 bought or addedQ4 22: 115 cut or sold outQ4 22Q1 23: 115 bought or addedQ1 23: 88 cut or sold outQ2 23: 106 bought or addedQ2 23: 104 cut or sold outQ2 23Q3 23: 108 bought or addedQ3 23: 100 cut or sold outQ4 23: 128 bought or addedQ4 23: 89 cut or sold outQ4 23Q1 24: 118 bought or addedQ1 24: 114 cut or sold outQ2 24: 117 bought or addedQ2 24: 106 cut or sold outQ2 24
Numbers
QuarterBought or addedCut or sold out
Q4 2022100115
Q1 202311588
Q2 2023106104
Q3 2023108100
Q4 202312889
Q1 2024118114
Q2 2024117106

Calls vs puts

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

CallsPuts
$0$20m$40m$60mQ3 23 calls: $34.0mQ3 23 puts: $6.0mQ3 23P/C 0.18Q4 23 calls: $44.3mQ4 23 puts: $24.1mQ4 23P/C 0.54Q1 24 calls: $9.7mQ1 24 puts: $13.7mQ1 24P/C 1.41Q2 24 calls: $12.7mQ2 24 puts: $7.0mQ2 24P/C 0.55
Numbers
QuarterCallsPutsP/C
Q3 2023$34.0m$6.0m0.18
Q4 2023$44.3m$24.1m0.54
Q1 2024$9.7m$13.7m1.41
Q2 2024$12.7m$7.0m0.55

Biggest buyers

MARSHALL WACE, LLP Added +4,577,177+4.6m
TWO SIGMA INVESTMENTS, LP Added +1,941,853+1.9m
VOLORIDGE INVESTMENT MANAGEMENT, LLC New +1,850,888+1.9m
Genesis Investment Management, LLP Added +1,744,721+1.7m
BlackRock Inc. Added +980,055+980.1k
BANK OF AMERICA CORP /DE/ Added +867,498+867.5k
CITADEL ADVISORS LLC New +722,017+722.0k
Schonfeld Strategic Advisors LLC New +482,261+482.3k
CITIGROUP INC Added +440,086+440.1k
JPMORGAN CHASE & CO Added +415,802+415.8k

Biggest sellers

MORGAN STANLEY Reduced -18,819,673-18.8m
UBS Group AG Reduced -2,084,332-2.1m
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Reduced -1,640,230-1.6m
MILLENNIUM MANAGEMENT LLC Reduced -1,602,308-1.6m
NOMURA HOLDINGS INC Sold out -1,109,298-1.1m
BNP PARIBAS FINANCIAL MARKETS Reduced -894,462-894.5k
GOLDMAN SACHS GROUP INC Reduced -856,729-856.7k
Rafferty Asset Management, LLC Reduced -687,874-687.9k
BARCLAYS PLC Reduced -427,907-427.9k
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced -335,924-335.9k

Biggest calls

UBS Group AG Unchanged $3.9m450.0k shares
GROUP ONE TRADING LLC Reduced $2.2m248.5k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $2.2m247.0k shares
JANE STREET GROUP, LLC Added $1.8m201.0k shares
SIMPLEX TRADING, LLC Reduced $855.0k97.7k shares
Walleye Capital LLC New $645.6k73.7k shares
SYMMETRY PEAK MANAGEMENT LLC New $438.0k50.0k shares
BNP PARIBAS FINANCIAL MARKETS Unchanged $438.0k500 shares
WOLVERINE TRADING, LLC Reduced $187.5k21.4k shares
CITADEL ADVISORS LLC Reduced $103.4k11.8k shares

Biggest puts

SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $2.5m286.2k shares
Parallax Volatility Advisers, L.P. Added $1.3m147.7k shares
Squarepoint Ops LLC Reduced $875.1k99.9k shares
CITADEL ADVISORS LLC Added $828.7k94.6k shares
SIMPLEX TRADING, LLC Reduced $696.0k79.5k shares
Walleye Trading LLC Added $573.8k65.5k shares
GROUP ONE TRADING LLC Reduced $226.0k25.8k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 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
BlackRock, Inc. 13G · institution filed 2026-04-29 6.5% 817.5m 2026-04-29

Insider purchases and sales in Q2 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 Q2 2024.

Holders, Q2 2024

#ManagerLocationShares Value% of their portfolioChangeShares change
1 BlackRock Inc. 0.00% of their portfolio New York, NY 23,107,61323.1m $202.4m $202.4m 0.00% Added +980.1k +980,055
2 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 15,217,79015.2m $133.3m $133.3m 0.00% Reduced -121.2k -121,224
3 BANK OF AMERICA CORP /DE/ 0.01% of their portfolio CHARLOTTE, NC 8,533,7498.5m $74.8m $74.8m 0.01% Added +867.5k +867,498
4 Fisher Asset Management, LLC 0.03% of their portfolio PLANO, TX 7,667,3057.7m $67.2m $67.2m 0.03% Reduced -243.6k -243,561
5 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 6,999,3117.0m $61.3m $61.3m 0.00% Reduced -18.8m -18,819,673
6 UBS Group AG 0.02% of their portfolio ZURICH, V8 6,284,0586.3m $55.0m $55.0m 0.02% Reduced -2.1m -2,084,332
7 GOLDMAN SACHS GROUP INC 0.01% of their portfolio NEW YORK, NY 6,074,3056.1m $53.2m $53.2m 0.01% Reduced -856.7k -856,729
8 Rafferty Asset Management, LLC 0.19% of their portfolio New York, NY 5,940,1185.9m $52.0m $52.0m 0.19% Reduced -687.9k -687,874
9 MARSHALL WACE, LLP 0.07% of their portfolio LONDON, X0 5,248,2275.2m $46.0m $46.0m 0.07% Added +4.6m +4,577,177
10 CITIGROUP INC 0.04% of their portfolio NEW YORK, NY 4,437,5024.4m $38.9m $38.9m 0.04% Added +440.1k +440,086
11 Genesis Investment Management, LLP 6.68% of their portfolio London, X0 3,879,3213.9m $34.0m $34.0m 6.68% Added +1.7m +1,744,721
12 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 3,608,5193.6m $31.6m $31.6m 0.00% Reduced -10.7k -10,742
13 SCHRODER INVESTMENT MANAGEMENT GROUP 0.03% of their portfolio London, X0 2,997,2293.0m $26.3m $26.3m 0.03% Reduced -292.4k -292,424
14 BARCLAYS PLC 0.01% of their portfolio LONDON, X0 2,965,5503.0m $26.0m $26.0m 0.01% Reduced -427.9k -427,907
15 ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.02% of their portfolio BOSTON, MA 2,653,3272.7m $23.2m $23.2m 0.02% Reduced -1.6m -1,640,230
16 TWO SIGMA INVESTMENTS, LP 0.04% of their portfolio NEW YORK, NY 1,955,0532.0m $17.1m $17.1m 0.04% Added +1.9m +1,941,853
17 VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.06% of their portfolio JUPITER, FL 1,850,8881.9m $16.2m $16.2m 0.06% New
18 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 1,505,4721.5m $13.2m $13.2m 0.00% Added +415.8k +415,802
19 Crossmark Global Holdings, Inc. 0.21% of their portfolio HOUSTON, TX 1,275,8671.3m $11.2m $11.2m 0.21% Reduced -44.4k -44,371
20 BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio PARIS, I0 1,017,2881.0m $8.9m $8.9m 0.01% Reduced -894.5k -894,462
21 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 979,588979.6k $8.6m $8.6m 0.00% Reduced -80.1k -80,063
22 MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 755,026755.0k $6.6m $6.6m 0.01% Reduced -1.6m -1,602,308
23 CITADEL ADVISORS LLC 0.01% of their portfolio MIAMI, FL 722,017722.0k $6.3m $6.3m 0.01% New
24 Moran Wealth Management, LLC 0.21% of their portfolio NAPLES, FL 720,908720.9k $6.3m $6.3m 0.21% Reduced -11.4k -11,392
25 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 717,381717.4k $6.3m $6.3m 0.00% Reduced -3.0k -2,951
26 RHUMBLINE ADVISERS 0.01% of their portfolio BOSTON, MA 668,561668.6k $5.9m $5.9m 0.01% Reduced -259.6k -259,583
27 JANE STREET GROUP, LLC 0.01% of their portfolio NEW YORK, NY 618,932618.9k $5.4m $5.4m 0.01% Reduced -163.1k -163,136
28 Creative Planning 0.01% of their portfolio OVERLAND PARK, KS 539,883539.9k $4.7m $4.7m 0.01% Added +113.1k +113,130
29 Schonfeld Strategic Advisors LLC 0.03% of their portfolio NEW YORK, NY 482,261482.3k $4.2m $4.2m 0.03% New
30 Virtus Family Office LLC 5.34% of their portfolio EL PASO, TX 447,928447.9k $3.9m $3.9m 5.34% Added +16.8k +16,799
31 ACADIAN ASSET MANAGEMENT LLC 0.01% of their portfolio Boston, MA 439,765439.8k $3.8m $3.8m 0.01% Added +234.6k +234,606
32 Ethic Inc. 0.09% of their portfolio NEW YORK, NY 423,916423.9k $3.7m $3.7m 0.09% Added +10.0k +10,047
33 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.01% of their portfolio BALA CYNWYD, PA 370,616370.6k $3.2m $3.2m 0.01% Reduced -335.9k -335,924
34 O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.03% of their portfolio Stamford, CT 359,332359.3k $3.1m $3.1m 0.03% Added +5.7k +5,706
35 Vident Advisory, LLC 0.09% of their portfolio Alpharetta, GA 357,642357.6k $3.1m $3.1m 0.09% Added +102.6k +102,629
36 Laird Norton Wetherby Wealth Management, LLC 0.14% of their portfolio Seattle, WA 348,204348.2k $3.1m $3.1m 0.14% Added +5.0k +4,953
37 FIRST TRUST ADVISORS LP 0.00% of their portfolio Wheaton, IL 327,435327.4k $2.9m $2.9m 0.00% Reduced -26.5k -26,508
38 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 315,000315.0k $2.8m $2.8m 0.00% Added +276.9k +276,900
39 TWO SIGMA ADVISERS, LP 0.01% of their portfolio NEW YORK, NY 309,000309.0k $2.7m $2.7m 0.01% Added +194.6k +194,600
40 STOREBRAND ASSET MANAGEMENT AS 0.01% of their portfolio LYSAKER, Q8 307,352307.4k $2.7m $2.7m 0.01% Unchanged
41 GUGGENHEIM CAPITAL LLC 0.02% of their portfolio CHICAGO, IL 304,021304.0k $2.7m $2.7m 0.02% Added +48.4k +48,394
42 Vanguard Personalized Indexing Management, LLC 0.05% of their portfolio OAKLAND, CA 301,574301.6k $2.6m $2.6m 0.05% Added +34.4k +34,431
43 NewEdge Wealth, LLC 0.05% of their portfolio STAMFORD, CT 256,816256.8k $2.2m $2.2m 0.05% Added +13.2k +13,248
44 LSV ASSET MANAGEMENT 0.00% of their portfolio CHICAGO, IL 252,711252.7k $2.2m $2.2m 0.00% Unchanged
45 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 246,161246.2k $2.2m $2.2m 0.00% Added +13.2k +13,208
46 SIGNATUREFD, LLC 0.04% of their portfolio ATLANTA, GA 229,462229.5k $2.0m $2.0m 0.04% Added +3.2k +3,165
47 Summit Global Investments 0.13% of their portfolio BOUNTIFUL, UT 217,537217.5k $1.9m $1.9m 0.13% Reduced -7.9k -7,893
48 Corient Private Wealth LP 0.00% of their portfolio MIAMI, FL 210,863210.9k $1.8m $1.8m 0.00% Added +21.5k +21,466
49 Hennion & Walsh Asset Management, Inc. 0.09% of their portfolio Parsippany, NJ 200,004200.0k $1.8m $1.8m 0.09% Reduced -1.6k -1,626
50 QUADRANT CAPITAL GROUP LLC 0.13% of their portfolio CINCINNATI, OH 196,401196.4k $1.7m $1.7m 0.13% Added +3.0k +3,042
51 Walleye Capital LLC 0.02% of their portfolio NEW YORK, NY 178,512178.5k $1.6m $1.6m 0.02% Added +171.0k +170,965
52 First Trust Direct Indexing L.P. 0.09% of their portfolio Boston, MA 173,541173.5k $1.5m $1.5m 0.09% Added +2.7k +2,673
53 Baird Financial Group, Inc. 0.00% of their portfolio MILWAUKEE, WI 162,551162.6k $1.4m $1.4m 0.00% Added +62.5k +62,509
54 NATIXIS ADVISORS, LLC 0.00% of their portfolio Boston, MA 161,228161.2k $1.4m $1.4m 0.00% Reduced -1.3k -1,341
55 US BANCORP \DE\ 0.00% of their portfolio MINNEAPOLIS, MN 151,232151.2k $1.3m $1.3m 0.00% Added +24.0k +23,957
56 GREENLEAF TRUST 0.01% of their portfolio KALAMAZOO, MI 149,509149.5k $1.3m $1.3m 0.01% Unchanged
57 North of South Capital LLP 0.33% of their portfolio LONDON, X0 147,115147.1k $1.3m $1.3m 0.33% First filing
58 Quantinno Capital Management LP 0.02% of their portfolio NEW YORK, NY 143,131143.1k $1.3m $1.3m 0.02% Added +48.2k +48,171
59 TCW GROUP INC 0.01% of their portfolio LOS ANGELES, CA 141,930141.9k $1.2m $1.2m 0.01% Reduced -23.0k -23,027
60 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 138,036138.0k $1.2m $1.2m 0.00% Reduced -5.3k -5,258
61 West Family Investments, Inc. 0.35% of their portfolio CARLSBAD, CA 132,367132.4k $1.2m $1.2m 0.35% Reduced -1.1k -1,086
62 Grantham, Mayo, Van Otterloo & Co. LLC 0.00% of their portfolio Boston, MA 131,476131.5k $1.2m $1.2m 0.00% Reduced -19.9k -19,873
63 STIFEL FINANCIAL CORP 0.00% of their portfolio ST. LOUIS, MO 128,533128.5k $1.1m $1.1m 0.00% Reduced -1.9k -1,869
64 Caprock Group, LLC 0.04% of their portfolio BOISE, ID 126,204126.2k $1.1m $1.1m 0.04% Added +57.8k +57,762
65 AXA S.A. 0.00% of their portfolio PARIS, I0 126,008126.0k $1.1m $1.1m 0.00% Added +63.0k +63,004
66 Cerity Partners LLC 0.00% of their portfolio NEW YORK, NY 124,403124.4k $1.1m $1.1m 0.00% Reduced -70.5k -70,468
67 MIRABELLA FINANCIAL SERVICES LLP 0.07% of their portfolio London, X0 115,740115.7k $1.0m $1.0m 0.07% New
68 Parallel Advisors, LLC 0.03% of their portfolio SAN FRANCISCO, CA 113,331113.3k $992.8k $992.8k 0.03% Added +4.0k +4,016
69 Mariner, LLC 0.00% of their portfolio Overland Park, KS 113,311113.3k $992.6k $992.6k 0.00% Reduced -13.7k -13,704
70 Ballentine Partners, LLC 0.02% of their portfolio Waltham, MA 109,081109.1k $955.5k $955.5k 0.02% Reduced -4.2k -4,164
71 RITHOLTZ WEALTH MANAGEMENT 0.03% of their portfolio NEW YORK, NY 107,258107.3k $939.6k $939.6k 0.03% Reduced -4.8k -4,760
72 Advisors Asset Management, Inc. 0.02% of their portfolio Monument, CO 105,934105.9k $928.0k $928.0k 0.02% Added +25.0k +25,035
73 True Wealth Design, LLC 0.22% of their portfolio AKRON, OH 103,116103.1k $903.3k $903.3k 0.22% Added +1.3k +1,268
74 FMR LLC 0.00% of their portfolio BOSTON, MA 102,740102.7k $900.0k $900.0k 0.00% Reduced -13.5k -13,479
75 Sequoia Financial Advisors, LLC 0.01% of their portfolio Akron, OH 102,206102.2k $895.3k $895.3k 0.01% Added +1.3k +1,333
76 DGS Capital Management, LLC 0.25% of their portfolio JERSEY CITY, NJ 101,559101.6k $889.7k $889.7k 0.25% Reduced -3.3k -3,253
77 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 99,33599.3k $870.2k $870.2k 0.00% Reduced -64.7k -64,654
78 PROFUND ADVISORS LLC 0.03% of their portfolio BETHESDA, MD 97,50497.5k $854.1k $854.1k 0.03% Added +5.0k +4,951
79 Pathstone Holdings, LLC 0.00% of their portfolio ENGLEWOOD, NJ 95,44795.4k $836.1k $836.1k 0.00% Added +1.8k +1,791
80 SEVEN EIGHT CAPITAL, LP 0.09% of their portfolio New York, NY 94,32094.3k $826.2k $826.2k 0.09% New
81 Ignite Planners, LLC 0.18% of their portfolio SAN CLEMENTE, CA 88,94388.9k $745.3k $745.3k 0.18% Reduced -599 -599
82 GTS SECURITIES LLC 0.02% of their portfolio NEW YORK, NY 82,95183.0k $726.7k $726.7k 0.02% Added +25.2k +25,249
83 Mizuho Securities Co. Ltd. 1.68% of their portfolio TOKYO, M0 82,33582.3k $721.3k $721.3k 1.68% Added +13.0k +13,000
84 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 77,05477.1k $675.0k $675.0k 0.00% Added +352 +352
85 Blue Trust, Inc. 0.01% of their portfolio BRENTWOOD, TN 76,98577.0k $622.8k $622.8k 0.01% Added +42.6k +42,575
86 VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio San Antonio, TX 76,25576.3k $668.0k $668.0k 0.00% Added +15.5k +15,539
87 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 75,67875.7k $662.9k $662.9k 0.00% Reduced -5.7k -5,734
88 Cresset Asset Management, LLC 0.00% of their portfolio Chicago, IL 74,27474.3k $650.6k $650.6k 0.00% Added +7.2k +7,152
89 Bridgewater Advisors Inc. 0.07% of their portfolio NEW YORK, NY 73,66873.7k $547.4k $547.4k 0.07% New
90 BANQUE PICTET & CIE SA 0.01% of their portfolio GENEVA 73, V8 72,00972.0k $630.8k $630.8k 0.01% Unchanged
91 COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio WALTHAM, MA 71,45971.5k $626.0k $626.0k 0.00% Added +1.8k +1,756
92 Pinnacle Wealth Planning Services, Inc. 0.09% of their portfolio MANSFIELD, OH 69,44769.4k $608.4k $608.4k 0.09% Added +24 +24
93 Cambridge Investment Research Advisors, Inc. 0.00% of their portfolio FAIRFIELD, IA 63,53463.5k $557.0k $557.0k 0.00% Added +12.7k +12,670
94 SeaCrest Wealth Management, LLC 0.06% of their portfolio PURCHASE, NY 60,62560.6k $531.1k $531.1k 0.06% Added +228 +228
95 Walleye Trading LLC 0.01% of their portfolio NEW YORK, NY 59,22559.2k $518.8k $518.8k 0.01% Added +35.2k +35,240
96 JOHNSON INVESTMENT COUNSEL INC 0.01% of their portfolio Cincinnati, OH 57,70057.7k $505.5k $505.5k 0.01% Added +1.9k +1,865
97 SEI INVESTMENTS CO 0.00% of their portfolio OAKS, PA 55,34355.3k $484.8k $484.8k 0.00% Added +3.3k +3,331
98 Tidal Investments LLC 0.01% of their portfolio Milwaukee, WI 54,75454.8k $479.6k $479.6k 0.01% Added +29.2k +29,214
99 Engineers Gate Manager LP 0.01% of their portfolio NEW YORK, NY 53,70953.7k $470.5k $470.5k 0.01% Added +8.9k +8,928
100 JANICZEK WEALTH MANAGEMENT, LLC 0.10% of their portfolio DENVER, CO 53,09353.1k $465.1k $465.1k 0.10% Reduced -4.4k -4,400