Vault-13

WESTLAKE CORPORATION WLK

COM · Common Stock · CUSIP 960413102 · ISIN US9604131022

American petrochemical company

342 institutional holders -1 vs Q4 2022
42,627,28642.6m shares reported held*
33.4% of all shares outstanding*
$4.9bnreported value*
47 new 109 added 122 reduced 43 sold out net bought ≈ $687.5m (+6.3m 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 ($1.7m this quarter). Holder counts are more reliable. Shares outstanding: 127.6m as of 2023-04-27, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $114.95. Options: 9 managers hold calls ($9.4m notional), 10 hold puts ($11.5m).

Trends to Q1 2023

Institutional holders

Managers reporting a position, each quarter

0200400Q3 22: 321Q4 22: 343Q1 23: 342342Q3 22Q4 22Q1 23
Numbers
QuarterHolders
Q3 2022321
Q4 2022343
Q1 2023342

Buyers vs sellers

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

Bought or addedCut or sold out
2000200Q4 22: 167 bought or addedQ4 22: 159 cut or sold outQ4 22Q1 23: 156 bought or addedQ1 23: 165 cut or sold outQ1 23
Numbers
QuarterBought or addedCut or sold out
Q4 2022167159
Q1 2023156165

Calls vs puts

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

CallsPuts
$0$10m$20m$30mQ3 22 calls: $21.2mQ3 22 puts: $18.0mQ3 22P/C 0.85Q4 22 calls: $15.7mQ4 22 puts: $15.5mQ4 22P/C 0.99Q1 23 calls: $9.4mQ1 23 puts: $11.5mQ1 23P/C 1.22
Numbers
QuarterCallsPutsP/C
Q3 2022$21.2m$18.0m0.85
Q4 2022$15.7m$15.5m0.99
Q1 2023$9.4m$11.5m1.22

Biggest buyers

FMR LLC Added +4,854,619+4.9m
CITADEL ADVISORS LLC Added +871,295+871.3k
ENVESTNET ASSET MANAGEMENT INC Added +501,774+501.8k
Balyasny Asset Management L.P. Added +493,432+493.4k
ProShare Advisors LLC Added +294,948+294.9k
Caisse de depot et placement du Quebec New +260,912+260.9k
FEDERATED HERMES, INC. Added +220,791+220.8k
Pacer Advisors, Inc. Added +174,908+174.9k
Man Group plc New +147,455+147.5k
AMERICAN CENTURY COMPANIES INC Added +140,653+140.7k

Biggest sellers

Soroban Capital Partners LP Reduced -668,813-668.8k
BANK OF AMERICA CORP /DE/ Reduced -355,429-355.4k
DIMENSIONAL FUND ADVISORS LP Reduced -238,385-238.4k
Point72 Asset Management, L.P. Sold out -152,699-152.7k
Verition Fund Management LLC Reduced -134,380-134.4k
Man Group plc Sold out -130,688-130.7k
Korea Investment CORP Reduced -104,984-105.0k
GOLDMAN SACHS GROUP INC Reduced -99,964-100.0k
AQR CAPITAL MANAGEMENT LLC Reduced -89,786-89.8k
Nuveen Asset Management, LLC Reduced -78,361-78.4k

Biggest calls

SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $3.7m31.8k shares
CITADEL ADVISORS LLC Reduced $3.1m27.0k shares
JANE STREET GROUP, LLC Reduced $788.7k6.8k shares
Walleye Trading LLC Reduced $730.7k6.3k shares
WOLVERINE TRADING, LLC Reduced $466.0k4.1k shares
SIMPLEX TRADING, LLC Reduced $313.0k2.7k shares
Walleye Capital LLC New $232.0k2.0k shares
GROUP ONE TRADING LLC Added $92.8k800 shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

Jefferies Financial Group Inc. New $2.3m20.0k shares
Walleye Trading LLC Added $2.3m20.0k shares
CITADEL ADVISORS LLC Reduced $2.1m18.2k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $1.8m15.5k shares
JANE STREET GROUP, LLC Added $1.1m9.7k shares
Walleye Capital LLC New $707.5k6.1k shares
WOLVERINE TRADING, LLC Added $580.0k5.1k shares
SIMPLEX TRADING, LLC Reduced $313.0k2.7k shares
GROUP ONE TRADING LLC New $232.0k2.0k 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.

Insider purchases and sales in Q1 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.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
404Q2 21: 0 buyingQ2 21: 0 sellingQ3 21: 0 buyingQ3 21: 0 sellingQ3 21Q4 21: 0 buyingQ4 21: 2 sellingQ1 22: 0 buyingQ1 22: 4 sellingQ1 22Q2 22: 0 buyingQ2 22: 4 sellingQ3 22: 0 buyingQ3 22: 2 sellingQ3 22Q4 22: 0 buyingQ4 22: 0 sellingQ1 23: 0 buyingQ1 23: 0 sellingQ1 23
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q2 20210—0——
Q3 20210—0——
Q4 20210—2$6.6m—
Q1 20220—4$9.1m—
Q2 20220—4$9.7m—
Q3 20220—2$157.0k—
Q4 20220—0——
Q1 20230—0——

None reported in Q1 2023.

Holders, Q1 2023

#ManagerLocationShares Value% of their portfolioChangeShares change
1 FMR LLC 0.04% of their portfolio BOSTON, MA 8,449,2828.4m $979.9m $979.9m 0.04% Added +4.9m +4,854,619
2 BlackRock Inc. 0.01% of their portfolio New York, NY 3,566,9183.6m $413.7m $413.7m 0.01% Reduced -27.9k -27,942
3 VANGUARD GROUP INC 0.01% of their portfolio Valley Forge, PA 3,461,7523.5m $401.5m $401.5m 0.01% Added +5.2k +5,230
4 VICTORY CAPITAL MANAGEMENT INC 0.43% of their portfolio San Antonio, TX 3,320,7293.3m $385.1m $385.1m 0.43% Added +81.1k +81,059
5 Orbis Allan Gray Ltd 1.88% of their portfolio HamiltoN, D0 2,061,9002.1m $239.1m $239.1m 1.88% Added +105.7k +105,650
6 DIMENSIONAL FUND ADVISORS LP 0.06% of their portfolio AUSTIN, TX 1,470,4501.5m $170.5m $170.5m 0.06% Reduced -238.4k -238,385
7 Soroban Capital Partners LP 2.15% of their portfolio New York, NY 1,352,8611.4m $156.9m $156.9m 2.15% Reduced -668.8k -668,813
8 CITADEL ADVISORS LLC 0.16% of their portfolio MIAMI, FL 1,226,3761.2m $142.2m $142.2m 0.16% Added +871.3k +871,295
9 Pacer Advisors, Inc. 0.59% of their portfolio Malvern, PA 1,187,3941.2m $137.7m $137.7m 0.59% Added +174.9k +174,908
10 STATE STREET CORP 0.01% of their portfolio BOSTON, MA 1,144,0721.1m $132.7m $132.7m 0.01% Added +19.1k +19,052
11 FIRST TRUST ADVISORS LP 0.14% of their portfolio Wheaton, IL 1,025,2421.0m $118.9m $118.9m 0.14% Added +64.5k +64,504
12 GOLDMAN SACHS GROUP INC 0.02% of their portfolio NEW YORK, NY 737,441737.4k $85.5m $85.5m 0.02% Reduced -100.0k -99,964
13 Balyasny Asset Management L.P. 0.23% of their portfolio Chicago, IL 610,892610.9k $70.9m $70.9m 0.23% Added +493.4k +493,432
14 Mirae Asset Global Investments Co., Ltd. 0.15% of their portfolio SEOUL, M5 568,575568.6k $65.9m $65.9m 0.15% Added +48.5k +48,466
15 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 554,086554.1k $4.9m $4.9m 0.00% Added +501.8k +501,774
16 Nuveen Asset Management, LLC 0.02% of their portfolio CHICAGO, IL 550,659550.7k $63.9m $63.9m 0.02% Reduced -78.4k -78,361
17 FEDERATED HERMES, INC. 0.14% of their portfolio PITTSBURGH, PA 477,323477.3k $55.4m $55.4m 0.14% Added +220.8k +220,791
18 GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio BOSTON, MA 470,466470.5k $54.5m $54.5m 0.01% Added +19.5k +19,466
19 AQR CAPITAL MANAGEMENT LLC 0.12% of their portfolio Greenwich, CT 469,482469.5k $53.6m $53.6m 0.12% Reduced -89.8k -89,786
20 Bank of New York Mellon Corp 0.01% of their portfolio NEW YORK, NY 416,392416.4k $48.3m $48.3m 0.01% Reduced -16.9k -16,937
21 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio SAN FRANCISCO, CA 344,800344.8k $40.0m $40.0m 0.01% Added +6.9k +6,858
22 Allspring Global Investments Holdings, LLC 0.07% of their portfolio CHARLOTTE, NC 343,683343.7k $39.9m $39.9m 0.07% Reduced -22.3k -22,265
23 NORGES BANK 0.01% of their portfolio OSLO, Q8 332,282332.3k $38.5m $38.5m 0.01% Added +22.9k +22,948
24 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 331,898331.9k $38.5m $38.5m 0.00% Added +11.9k +11,923
25 ProShare Advisors LLC 0.11% of their portfolio BETHESDA, MD 312,639312.6k $36.3m $36.3m 0.11% Added +294.9k +294,948
26 NORTHERN TRUST CORP 0.01% of their portfolio CHICAGO, IL 303,314303.3k $35.2m $35.2m 0.01% Reduced -4.2k -4,223
27 Caisse de depot et placement du Quebec 0.09% of their portfolio Montreal, A8 260,912260.9k $30.3m $30.3m 0.09% New
28 Appian Way Asset Management LP 10.09% of their portfolio NEW YORK, NY 253,283253.3k $29.4m $29.4m 10.09% Added +104.6k +104,583
29 Invesco Ltd. 0.01% of their portfolio ATLANTA, GA 251,308251.3k $29.1m $29.1m 0.01% Reduced -12.5k -12,542
30 Grantham, Mayo, Van Otterloo & Co. LLC 0.14% of their portfolio Boston, MA 236,700236.7k $27.5m $27.5m 0.14% Reduced -7.1k -7,100
31 ROBOTTI ROBERT 4.68% of their portfolio NEW YORK, NY 229,216229.2k $26.6m $26.6m 4.68% Reduced -51 -51
32 Legal & General Group Plc 0.01% of their portfolio London, X0 227,405227.4k $26.4m $26.4m 0.01% Reduced -1.3k -1,316
33 JANUS HENDERSON GROUP PLC 0.01% of their portfolio LONDON, X0 195,629195.6k $22.7m $22.7m 0.01% Reduced -31.9k -31,946
34 Erste Asset Management GmbH 0.36% of their portfolio VIENNA, C4 163,551163.6k $18.9m $18.9m 0.36% Added +19.5k +19,518
35 AMERICAN CENTURY COMPANIES INC 0.01% of their portfolio KANSAS CITY, MO 162,037162.0k $18.8m $18.8m 0.01% Added +140.7k +140,653
36 STOREBRAND ASSET MANAGEMENT AS 0.09% of their portfolio LYSAKER, Q8 155,687155.7k $18.1m $18.1m 0.09% Added +2.7k +2,726
37 Swiss National Bank 0.01% of their portfolio ZURICH, V8 151,700151.7k $17.6m $17.6m 0.01% Reduced -4.0k -4,000
38 Man Group plc 0.06% of their portfolio LONDON, X0 147,455147.5k $17.1m $17.1m 0.06% New
39 SCOUT INVESTMENTS, INC. 0.34% of their portfolio KANSAS CITY, MO 144,702144.7k $16.8m $16.8m 0.34% Reduced -164 -164
40 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 142,988143.0k $16.6m $16.6m 0.00% Reduced -355.4k -355,429
41 STRS OHIO 0.02% of their portfolio COLUMBUS, OH 141,300141.3k $16.4m $16.4m 0.02% Added +90.4k +90,396
42 GUGGENHEIM CAPITAL LLC 0.14% of their portfolio CHICAGO, IL 139,562139.6k $16.2m $16.2m 0.14% Reduced -7.8k -7,834
43 PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio DES MOINES, IA 136,136136.1k $15.8m $15.8m 0.01% Added +1.2k +1,228
44 AMERIPRISE FINANCIAL INC 0.01% of their portfolio MINNEAPOLIS, MN 131,759131.8k $15.3m $15.3m 0.01% Added +1.1k +1,123
45 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio NEW YORK, NY 128,242128.2k $14.9m $14.9m 0.01% Added +6.7k +6,743
46 LAZARD ASSET MANAGEMENT LLC 0.02% of their portfolio NEW YORK, NY 124,806124.8k $14.5m $14.5m 0.02% Added +112.5k +112,504
47 LUMINUS MANAGEMENT LLC 3.58% of their portfolio HOUSTON, TX 118,600118.6k $13.8m $13.8m 3.58% Added +28.1k +28,050
48 Anomaly Capital Management, LP 0.58% of their portfolio New York, NY 113,850113.8k $13.2m $13.2m 0.58% New
49 Sumitomo Mitsui Trust Group, Inc. 0.01% of their portfolio CHIYODA-KU, TOKYO, M0 113,504113.5k $13.2m $13.2m 0.01% Added +3.6k +3,613
50 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 112,549112.5k $13.1m $13.1m 0.00% Reduced -14.7k -14,714
51 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 105,616105.6k $12.2m $12.2m 0.00% Reduced -20.4k -20,428
52 SPROTT INC. 1.04% of their portfolio TORONTO, A6 105,000105.0k $12.2m $12.2m 1.04% Unchanged
53 VIRGINIA RETIREMENT SYSTEMS ET Al 0.12% of their portfolio RICHMOND, VA 102,361102.4k $11.9m $11.9m 0.12% Reduced -19.9k -19,939
54 RHUMBLINE ADVISERS 0.01% of their portfolio BOSTON, MA 101,868101.9k $11.8m $11.8m 0.01% Reduced -781 -781
55 SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.24% of their portfolio BALA CYNWYD, PA 89,27289.3k $10.4m $10.4m 0.24% Reduced -5.2k -5,214
56 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 79,46379.5k $9.2m $9.2m 0.00% Reduced -1.5k -1,539
57 Vident Investment Advisory, LLC 0.28% of their portfolio Alpharetta, GA 75,34275.3k $8.7m $8.7m 0.28% Reduced -6.2k -6,220
58 Moran Wealth Management, LLC 0.33% of their portfolio NAPLES, FL 74,90474.9k $8.7m $8.7m 0.33% New
59 WINMILL & CO. INC 3.03% of their portfolio WALPOLE, NH 70,00070.0k $8.1m $8.1m 3.03% Unchanged
60 Ensign Peak Advisors, Inc 0.02% of their portfolio SALT LAKE CITY, UT 65,55065.5k $7.6m $7.6m 0.02% Added +4.9k +4,867
61 CONTRAVISORY INVESTMENT MANAGEMENT, INC. 2.12% of their portfolio Norwell, MA 64,71664.7k $7.5m $7.5m 2.12% Reduced -1.0k -1,044
62 Cerity Partners LLC 0.02% of their portfolio NEW YORK, NY 61,89261.9k $7.2m $7.2m 0.02% New
63 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio WEST SACRAMENTO, CA 58,30358.3k $6.8m $6.8m 0.01% Reduced -645 -645
64 AustralianSuper Pty Ltd 0.05% of their portfolio MELBOURNE, C3 57,03257.0k $6.6m $6.6m 0.05% New
65 CREDIT SUISSE AG/ 0.01% of their portfolio ZURICH, V8 56,19456.2k $6.5m $6.5m 0.01% Reduced -23.1k -23,118
66 KGH Ltd 0.50% of their portfolio NASSAU, C5 55,00055.0k $6.4m $6.4m 0.50% New
67 WEDGE CAPITAL MANAGEMENT L L P/NC 0.10% of their portfolio CHARLOTTE, NC 53,31553.3k $6.2m $6.2m 0.10% Reduced -12.7k -12,730
68 AMERICAN INTERNATIONAL GROUP, INC. 0.04% of their portfolio New York, NY 53,11853.1k $6.2m $6.2m 0.04% Reduced -498 -498
69 Alyeska Investment Group, L.P. 0.05% of their portfolio CHICAGO, IL 49,07749.1k $5.7m $5.7m 0.05% Added +13.7k +13,677
70 FORT PITT CAPITAL GROUP, LLC 0.21% of their portfolio Pittsburgh, PA 47,53947.5k $5.5m $5.5m 0.21% Reduced -63.8k -63,821
71 Retirement Systems of Alabama 0.02% of their portfolio MONTGOMERY, AL 44,99445.0k $5.2m $5.2m 0.02% Reduced -392 -392
72 BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio PARIS, I0 42,00742.0k $4.9m $4.9m 0.01% Added +9.6k +9,568
73 STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio MADISON, WI 38,98239.0k $4.5m $4.5m 0.01% Added +19.8k +19,844
74 TUDOR INVESTMENT CORP ET AL 0.08% of their portfolio STAMFORD, CT 37,24437.2k $4.3m $4.3m 0.08% New
75 Smith, Graham & Co., Investment Advisors, LP 0.51% of their portfolio Houston, TX 36,02536.0k $4.2m $4.2m 0.51% Reduced -894 -894
76 State of Tennessee, Department of Treasury 0.02% of their portfolio NASHVILLE, TN 34,98235.0k $4.1m $4.1m 0.02% Reduced -2.3k -2,284
77 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.01% of their portfolio TALLAHASSEE, FL 34,15334.2k $4.0m $4.0m 0.01% Reduced -2.6k -2,580
78 NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio ALBANY, NY 33,49433.5k $3.9m $3.9m 0.01% Reduced -2.8k -2,809
79 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 33,29033.3k $3.9m $3.9m 0.00% Reduced -3.1k -3,101
80 Quantinno Capital Management LP 0.25% of their portfolio NEW YORK, NY 32,32132.3k $3.7m $3.7m 0.25% Reduced -1.4k -1,395
81 Faithward Advisors, LLC 0.81% of their portfolio LANCASTER, PA 31,55031.6k $3.6m $3.6m 0.81% Reduced -7.6k -7,600
82 HUSSMAN STRATEGIC ADVISORS, INC. 0.56% of their portfolio ELLICOTT CITY, MD 31,00031.0k $3.6m $3.6m 0.56% Unchanged
83 Amundi 0.00% of their portfolio Paris, I0 30,97631.0k $3.5m $3.5m 0.00% Reduced -22.3k -22,321
84 TEXAS PERMANENT SCHOOL FUND CORP 0.04% of their portfolio AUSTIN, TX 30,88230.9k $3.6m $3.6m 0.04% Added +7.7k +7,732
85 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 29,17329.2k $3.4m $3.4m 0.00% Added +2.5k +2,498
86 Swedbank AB 0.01% of their portfolio STOCKHOLM, V7 28,95329.0k $3.4m $3.4m 0.01% Unchanged
87 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 28,75628.8k $3.3m $3.3m 0.00% Reduced -17.6k -17,591
88 State of Alaska, Department of Revenue 0.04% of their portfolio JUNEAU, AK 28,67928.7k $3.3m $3.3m 0.04% Reduced -55 -55
89 CLARK ESTATES INC/NY 0.66% of their portfolio NEW YORK, NY 28,60028.6k $3.3m $3.3m 0.66% Reduced -6.0k -6,000
90 CANADA LIFE ASSURANCE Co 0.01% of their portfolio WINNIPEG, A2 28,15228.2k $3.3m $3.3m 0.01% Reduced -1.2k -1,240
91 MERCER GLOBAL ADVISORS INC /ADV 0.01% of their portfolio DENVER, CO 28,13128.1k $3.3m $3.3m 0.01% Reduced -795 -795
92 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 28,12628.1k $3.3m $3.3m 0.00% Added +2.3k +2,348
93 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 28,00128.0k $3.2m $3.2m 0.00% Reduced -1.1k -1,138
94 MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC 0.04% of their portfolio New York, NY 27,68927.7k $3.2m $3.2m 0.04% Reduced -578 -578
95 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 27,26727.3k $3.2m $3.2m 0.00% Added +295 +295
96 PointState Capital LP 0.17% of their portfolio New York, NY 25,98626.0k $3.0m $3.0m 0.17% New
97 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 25,29025.3k $2.9m $2.9m 0.00% Reduced -1.0k -1,023
98 ACADIAN ASSET MANAGEMENT LLC 0.01% of their portfolio Boston, MA 24,76524.8k $2.9m $2.9m 0.01% Reduced -21.1k -21,116
99 AVIVA PLC 0.01% of their portfolio LONDON, X0 24,73324.7k $2.9m $2.9m 0.01% Reduced -10.3k -10,282
100 PRUDENTIAL FINANCIAL INC 0.00% of their portfolio NEWARK, NJ 23,83023.8k $2.5m $2.5m 0.00% Reduced -8.0k -8,026