$WLK

Dmitry Balyasny - Balyasny Asset Management

369,672 shares

Capital World Investors

4,211,006 shares

Wellington Management

1,793,517 shares

T. Rowe Price

2,407,457 shares

David Solomon - Goldman Sachs

1,393,327 shares

Nuveen

564,744 shares

David E. Shaw - D.E. Shaw & Co.

233,183 shares

Jane Street Group

105,686 shares

UBS Group

811,266 shares

Cliff Asness - AQR Capital Management

260,070 shares

Ken Griffin - Citadel Advisors

715,586 shares

Janus Henderson Group

269,783 shares

Larry Fink - BlackRock

3,079,087 shares

State Street Corp

1,380,493 shares

Charles Schwab

311,762 shares

Israel Englander - Millennium Management

84,997 shares

Geode Capital Management

614,334 shares

Northern Trust Corp

269,149 shares

Morgan Stanley

486,508 shares

Invesco

179,402 shares

SG Americas Securities

24,576 shares

CalPERS

25,000 shares

AllianceBernstein (AB)

67,315 shares

First Eagle Investment Management

7,118 shares

Legal & General

50,737 shares

Mitsubishi Ufj Asset Management Co., Ltd.

11,262 shares

BNP Paribas

6,690 shares

Mike Hankin - Brown Advisory INC

2,226 shares

Voya Investment Mgmt

2,436 shares

Canada Pension Plan Investment Board

2,210 shares

PNC Financial Services

1,522 shares

Two Sigma Investments

0 shares

Lazard Asset Management

0 shares

Joel Greenblatt - Gotham Asset Management

34,564 shares

Mario Gabelli - GAMCO Investors

3,491 shares

Verition Fund Management LLC

2,000 shares

New York State Teachers Retirement System

4,143 shares

Natixis

0 shares

Diamond Hill Capital Management

0 shares

Exoduspoint Capital Management, Lp

0 shares

Manning & Napier

0 shares

Stanley Druckenmiller - Duquesne Family Office

21,194 shares

Jamie Dimon - JPMorgan Chase

0 shares