Skip to content

CE CELANESE CORP DEL

Follow

Stock (common), issuer CIK 1306830

414 managers (420 13F filers) reported a position in CE shares at 2025-09-30, 110,768,965 shares in all. 55 filers opened a position and 83 filers sold out during the quarter.

Managers
414
13F filers
420
New
55
Added
133
Reduced
169
Sold out
83
Shares held by filers
110,768,965

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Dodge & Cox15,361,604$646M0.35%+36,93713F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.12,922,461$544M0.01%+160,32613F-HRTimelineGroup
VANGUARD GROUP INCgroup of 2 filers holding11,761,051$495M-38,796Timeline
TURTLE CREEK ASSET MANAGEMENT INC.5,115,365$215M6.5%+887,60013F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.4,596,129$193M0.34%-485,32913F-HRTimelineGroup
Capital Research Global Investorsin group Capital Research Global Inves…4,488,911$189M0.04%-98,84413F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP3,868,988$163M0.01%+40,24113F-HRTimelineGroup
FULLER & THALER ASSET MANAGEMENT, INC.3,536,390$149M0.51%+385,16113F-HRTimeline
HARRIS ASSOCIATES L P3,437,497$145M0.23%-117,57013F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY2,494,317$105M0.01%-279,57613F-HR/ATimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC1,703,695$71.7M0.28%+466,68313F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC1,695,437$71.3M0.06%+389,45413F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/1,638,003$68.9M0.01%-7,68613F-HR/ATimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,622,265$68.3M<0.01%-244,25013F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co1,400,800$58.9M0.01%+420,70513F-HRTimelineGroup
Capital World Investors1,314,058$55.3M0.01%-513F-HRTimeline
Orbis Allan Gray Ltdin group Orbis Allan Gray Ltd1,304,050$54.9M0.24%new13F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.1,286,676$54.1M0.04%+425,84613F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…1,214,487$51.1M0.06%+214,63213F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC1,170,904$49.3M0.04%-249,72913F-HRTimelineGroup
Franklin Resourcesgroup of 2 filers holding1,136,311$47.8M-172,567Timeline
Connor, Clark & Lunn Investment Managem…1,122,694$47.2M0.15%+257,39213F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP1,083,530$45.6M0.01%-360,14013F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding1,062,166$44.7M-834,122Timeline
Squarepoint Ops LLCin group Squarepoint Ops LLC1,034,471$43.5M0.09%+612,96113F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…868,520$36.5M0.01%-122,72913F-HRTimelineGroup
MIZUHO MARKETS AMERICAS LLCin group MIZUHO FINANCIAL GROUP INC833,450$35.1M0.74%-414,60513F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp757,040$31.9M0.01%-59,93313F-HRTimelineGroup
Assenagon Asset Management S.A.737,289$31M0.05%+600,22913F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS694,033$29.2M0.02%-262,61713F-HRTimelineGroup
Holocene Advisors, LP693,796$29.2M0.07%+622,46013F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP689,376$29M<0.01%-52,98813F-HRTimelineGroup
Electron Capital Partners, LLCin group Electron Capital Partners, LLC564,662$23.8M1.08%+39,42213F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP546,324$23M0.03%-273,50913F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.534,062$22.5M<0.01%+83,56613F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCgroup of 2 filers holding527,438$22.2M-14,703Timeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC504,943$21.2M<0.01%+103,39613F-HRTimelineGroup
CIBC WORLD MARKET INC.498,570$21M0.04%+93,85713F-HRTimeline
Public Sector Pension Investment Board427,147$18M0.07%+54,14413F-HRTimeline
VOLORIDGE INVESTMENT MANAGEMENT, LLC423,709$17.8M0.06%-430,98713F-HRTimeline
SAMLYN CAPITAL, LLCin group SAMLYN CAPITAL, LLC397,325$16.7M0.24%-529,12913F-HRTimelineGroup
Qube Research & Technologies Ltd392,318$16.5M0.02%+244,43713F-HRTimeline
Capital International Investorsin group Capital International Investo…390,877$16.4M<0.01%-2,05813F-HRTimelineGroup
Amundiin group Amundi331,911$14.7M<0.01%-49,70413F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc304,841$12.8M<0.01%-12,46113F-HRTimelineGroup
MACKENZIE FINANCIAL CORP287,212$12.1M0.01%+267,61213F-HRTimeline
ING GROEP NV286,500$12.1M0.07%+245,70013F-HRTimeline
RHUMBLINE ADVISERS260,871$11M0.01%-52513F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO259,196$10.9M<0.01%+29,39213F-HR/ATimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management244,880$10.3M0.02%-639,49313F-HRTimelineGroup
ALGERT GLOBAL LLC242,526$10.2M0.17%+104,06513F-HR/ATimeline
CANADA PENSION PLAN INVESTMENT BOARD230,872$9.72M0.01%new13F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC229,574$9.66M<0.01%-6,31013F-HRTimelineGroup
Appian Way Asset Management LP224,589$9.45M2.05%new13F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN219,605$9.24M<0.01%-168,14313F-HRTimelineGroup
M&G PLCin group M&G PLC217,880$9.15M0.05%+7,00313F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL214,099$9.01M0.06%-74,90813F-HR/ATimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.206,926$8.71M0.02%-1,520,99313F-HRTimelineGroup
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.205,510$8.65M0.03%+79,65613F-HRTimelineGroup
HRT FINANCIAL LP203,198$8.55M0.03%+109,13213F-HRTimeline
NorthCoast Asset Management LLC201,633$8.48M0.03%+102,28613F-HRTimeline
Swiss National Bank201,418$8.48M<0.01%-1,30013F-HRTimeline
California Public Employees Retirement …195,890$8.24M<0.01%+10,91013F-HRTimeline
Nuveen, LLCin group TIAA192,839$8.11M<0.01%-38,38313F-HRTimelineGroup
MUHLENKAMP & CO INC184,455$7.76M2.11%+33,24713F-HRTimeline
Woodline Partners LP180,320$7.59M0.04%-82,72713F-HRTimeline
MACQUARIE GROUP LTDin group MACQUARIE GROUP LTD176,411$7.42M0.01%+66,93113F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC174,839$7.36M0.09%-172,83313F-HR/ATimelineGroup
Quantinno Capital Management LP167,448$7.05M0.02%+71,76613F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC167,412$7.04M0.01%-118,15113F-HRTimelineGroup
Bridgewater Associates, LP155,755$6.55M0.03%new13F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC154,465$6.5M<0.01%+37,77213F-HRTimelineGroup
Man Group plcin group Man Group plc154,240$6.49M0.01%-398,02413F-HRTimelineGroup
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…151,788$6.39M0.01%+18,36513F-HRTimelineGroup
Y-Intercept (Hong Kong) Ltd143,947$6.06M0.15%new13F-HRTimeline
Edgestream Partners, L.P.136,392$5.74M0.17%+28,84413F-HRTimeline
Caisse de depot et placement du Quebec135,900$5.72M0.01%new13F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA130,089$5.47M<0.01%-558,14813F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO126,593$5.33M0.01%+21,56413F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…123,415$5.19M0.01%+7,11013F-HRTimelineGroup
Verition Fund Management LLC117,533$4.95M0.03%+32,10113F-HRTimeline
Walleye Capital LLCgroup of 2 filers holding117,301$4.94M-21,710Timeline
Pine Valley Investments Ltd Liability Co111,655$4.7M0.24%+108,58413F-HRTimeline
NEW YORK STATE TEACHERS RETIREMENT SYST…106,966$4.5M0.01%+20013F-HRTimeline
Jain Global LLC105,297$4.43M0.06%new13F-HRTimeline
RBF Capital, LLC103,000$4.33M0.2%-40,00013F-HRTimeline
MASTERS CAPITAL MANAGEMENT LLC100,000$4.21M0.68%new13F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…98,819$4.16M<0.01%-2,39713F-HRTimeline
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…95,894$4.04M0.02%-4,27113F-HR/ATimelineGroup
FMR LLCin group FMR LLC93,605$3.94M<0.01%-137,43813F-HRTimelineGroup
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co96,256$3.93M0.01%+1,70813F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding93,122$3.92M-447,451Timeline
PRICE T ROWE ASSOCIATES INC /MD/91,464$3.85M<0.01%+5,12413F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\89,083$3.75M<0.01%-307,29813F-HRTimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…77,949$3.28M0.01%-1,37813F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…77,056$3.24M<0.01%-21,06813F-HRTimelineGroup
GREAT LAKES ADVISORS, LLC75,359$3.17M0.03%new13F-HRTimeline
U.S. Capital Wealth Advisors, LLC71,464$3.01M0.08%-3,62113F-HRTimeline
CAPITAL FUND MANAGEMENT S.A.71,136$2.99M0.03%-225,04913F-HRTimeline
Quantbot Technologies LP71,111$2.99M0.08%-21,72313F-HRTimeline
AMG National Trust Bank70,322$2.96M0.07%+51,32213F-HRTimeline
Schonfeld Strategic Advisors LLC70,110$2.95M0.02%+13,74313F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD69,962$2.94M0.01%-1,13813F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND64,249$2.7M<0.01%+14,50013F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC62,461$2.63M<0.01%+44,36613F-HRTimeline
Cubist Systematic Strategies, LLC62,329$2.62M0.04%-146,43713F-HRTimeline
Gotham Asset Management, LLC61,471$2.59M0.01%-197,54413F-HRTimeline
CITIGROUP INCin group CITIGROUP INC60,485$2.55M<0.01%-34,27213F-HRTimelineGroup
Delta Global Management LP56,497$2.38M0.17%+8,87813F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC56,335$2.37M<0.01%-18,85513F-HRTimelineGroup
State of Alaska, Department of Revenue55,100$2.32M0.02%-10,06313F-HRTimeline
Freestone Grove Partners LP55,009$2.31M0.02%+42,63113F-HRTimeline
ALLIANCEBERNSTEIN L.P.53,970$2.27M<0.01%+1,21313F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC50,997$2.15M<0.01%+39,48413F-HRTimelineGroup
COMERICA BANK50,681$2.13M0.01%-5,02013F-HRTimeline
Louisiana State Employees Retirement Sy…50,300$2.12M0.04%-80013F-HRTimeline
Treasurer of the State of North Carolina50,171$2.11M0.01%-1,95313F-HRTimeline
Police & Firemen's Retirement System of…49,306$2.07M0.02%+7,24413F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…48,770$2.05M0.03%+40,55513F-HRTimelineGroup
Allspring Global Investments Holdings, …in group Allspring Global Investments …47,940$2.03M<0.01%new13F-HRTimelineGroup
Aquatic Capital Management LLC47,781$2.01M0.04%-127,21813F-HRTimeline
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…47,607$2M0.01%+9,61013F-HRTimelineGroup
E. Ohman J:or Asset Management AB44,993$1.89M0.04%013F-HRTimeline
Engineers Gate Manager LP43,674$1.84M0.02%+12,39613F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson43,409$1.83M<0.01%-185,21513F-HRTimelineGroup
FOX RUN MANAGEMENT, L.L.C.42,175$1.77M0.28%+33,85413F-HRTimeline
State of Tennessee, Department of Treas…41,770$1.76M0.01%+2,96913F-HRTimeline
BANK OF NOVA SCOTIAin group BANK OF NOVA SCOTIA41,594$1.75M<0.01%-314,28013F-HRTimelineGroup
QSM Asset Management Ltd41,898$1.72M1.23%-57,37713F-HRTimeline
Rakuten Securities, Inc.in group Rakuten Group, Inc.40,493$1.7M0.63%+40,35513F-HRTimelineGroup
WEALTH ENHANCEMENT ADVISORY SERVICES, L…39,855$1.7M<0.01%-6,35413F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…39,167$1.65M0.01%+4,52613F-HRTimeline
IMC-Chicago, LLC38,112$1.6M0.03%new13F-HRTimeline
Janney Montgomery Scott LLC37,645$1.58M<0.01%+80513F-HRTimeline
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP36,051$1.52M<0.01%-36,72913F-HRTimelineGroup
Handelsbanken Fonder AB34,900$1.47M<0.01%+9,00013F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC34,197$1.42M<0.01%-147,45613F-HRTimelineGroup
AMALGAMATED BANK33,495$1.41M0.01%+43513F-HRTimeline
ExodusPoint Capital Management, LP32,852$1.38M0.02%-119,30613F-HRTimeline
NISA INVESTMENT ADVISORS, LLC32,365$1.36M0.01%-5,62113F-HRTimeline
LPL Financial LLC31,390$1.32M<0.01%-3,17213F-HRTimeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…30,971$1.3M0.01%-72113F-HRTimeline
AXQ CAPITAL, LP30,932$1.3M0.5%new13F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM30,757$1.29M0.01%-22713F-HRTimeline
GSA CAPITAL PARTNERS LLP29,638$1.25M0.1%+6,76713F-HRTimeline
Bell & Brown Wealth Advisors, LLC28,261$1.19M0.39%+1,09413F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…27,888$1.17M0.01%-20113F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…27,819$1.17M<0.01%+3,50713F-HRTimeline
AUXIER ASSET MANAGEMENT LLC27,568$1.16M0.16%+16813F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC26,950$1.13M0.01%-6,25813F-HRTimeline
Ensign Peak Advisors, Inc26,780$1.13M<0.01%-4,15013F-HR/ATimeline
Aigen Investment Management, LP26,547$1.12M0.17%-10,54913F-HRTimeline
Callan Family Office, LLCin group Callan Family Office, LLC26,455$1.11M0.04%-1,68313F-HRTimelineGroup
NATIXIS ADVISORS, LLCin group Natixis Investment Managers24,904$1.05M<0.01%-18,52313F-HRTimelineGroup
OREGON PUBLIC EMPLOYEES RETIREMENT FUND24,715$1.04M0.01%-19513F-HRTimeline
Cetera Investment Advisers23,845$1M<0.01%+2,15213F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …23,335$982K<0.01%+1,77113F-HRTimelineGroup
DARK FOREST CAPITAL MANAGEMENT LP22,582$950K0.04%+13,00613F-HR/ATimeline
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/22,435$944K<0.01%-5,36213F-HRTimelineGroup
KLP KAPITALFORVALTNING AS21,900$922K<0.01%013F-HRTimeline
Point72 Hong Kong Ltd21,416$901K0.04%-23,82613F-HRTimeline
WINTON GROUP Ltdin group WINTON GROUP Ltd21,400$901K0.03%new13F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC21,247$894K<0.01%-6,67013F-HRTimelineGroup
Maryland State Retirement & Pension Sys…20,841$877K0.02%-16,41113F-HRTimeline
Counterpoint Mutual Funds LLC20,274$853K0.07%+14,58913F-HRTimeline
MANGROVE PARTNERS IM, LLC19,637$826K0.06%new13F-HRTimeline
CHOREO, LLC18,438$776K0.01%+5,86413F-HRTimeline
Scientech Research LLC18,078$761K0.27%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC17,925$754K<0.01%-140,24213F-HR/ATimelineGroup
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…17,701$745K<0.01%+4,99613F-HRTimelineGroup
Sciencast Management LP17,618$741K0.14%new13F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC17,503$737K<0.01%+3,06613F-HRTimelineGroup
OXFORD ASSET MANAGEMENT LLP17,421$733K0.24%new13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Summit Trail Advisors, LLC17,276$727K0.01%+13,10013F-HRTimeline
DekaBank Deutsche Girozentrale17,235$701K<0.01%013F-HRTimeline
GROUP ONE TRADING LLC16,456$692K0.02%new13F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …16,367$689K<0.01%-15,53213F-HRTimelineGroup
Wealthfront Advisers LLC16,355$688K<0.01%-32,04413F-HRTimeline
New Age Alpha Advisors, LLC15,970$672K0.03%-35213F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS15,823$666K<0.01%-32213F-HRTimeline
Twelve Points Wealth Management LLC15,724$662K0.16%-5713F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…15,513$653K<0.01%-61813F-HRTimelineGroup
Creative Planningin group Creative Planning15,476$651K<0.01%+70513F-HRTimelineGroup
Bryce Point Capital, LLC15,475$651K0.79%+71713F-HRTimeline
Impala Asset Management LLC15,000$631K0.39%new13F-HRTimeline
Quantitative Investment Management, LLC14,790$622K0.09%new13F-HRTimeline
Bayforest Capital Ltd14,626$615K0.29%+4,71913F-HRTimeline
Lighthouse Investment Partners, LLCin group Lighthouse Investment Partner…14,318$603K0.02%-123,87313F-HRTimelineGroup
OCCUDO QUANTITATIVE STRATEGIES LP14,225$599K0.07%+88813F-HRTimeline
Quinn Opportunity Partners LLC14,100$593K0.04%013F-HRTimeline
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC13,874$584K<0.01%+71513F-HRTimelineGroup
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC13,718$577K<0.01%+96513F-HRTimelineGroup
PEAK6 LLCin group PEAK6 LLC13,383$563K0.01%+12,19213F-HR/ATimelineGroup
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP13,082$551K<0.01%+1,14413F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC12,839$540K<0.01%-3,46613F-HRTimelineGroup
Corient Private Wealth LPin group Corient Private Wealth LP12,504$526K<0.01%+2,38513F-HRTimelineGroup
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…12,266$516K0.01%-1,78813F-HRTimelineGroup
FORA Capital, LLC12,067$508K0.09%-4,25213F-HRTimeline
Mariner, LLCin group Mariner, LLC11,820$497K<0.01%-19,88413F-HRTimelineGroup
REGIONS FINANCIAL CORPin group REGIONS FINANCIAL CORP11,450$482K<0.01%-75513F-HR/ATimelineGroup