There is a long list of 172 institutional holders of PKX within the last two holding periods in our database of 13F filers, so we've sorted through to present to you just the top 50 institutional holders of PKX by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-PKX table below, the initial column indicates the name of each top institutional holder of PKX, with a link to that fund's top holdings. The next columns indicate the amount of PKX stock held by each of the institutional holders of PKX, followed by the PKX position size held by the institution, and finally the date of the quarterly 13F filing period the holdings data represents for that institution.

Holder	Amount	Position Size ($ in 1000's)	As of
Dimensional Fund Advisors LP	1,217,958	$115,840	12/31/2023
PKX	1,217,958	$115,840	12/31/2023
State Street Corp	874,509	$83,175	12/31/2023
PKX	874,509	$83,175	12/31/2023
BlackRock Inc.	758,992	$72,188	12/31/2023
PKX	758,992	$72,188	12/31/2023
Morgan Stanley	573,101	$54,508	12/31/2023
PKX	573,101	$54,508	12/31/2023
Grantham Mayo Van Otterloo & Co. LLC	455,562	$43,329	12/31/2023
PKX	455,562	$43,329	12/31/2023
Connor Clark & Lunn Investment Management Ltd.	360,253	$34,264	12/31/2023
PKX	360,253	$34,264	12/31/2023
Vanguard Group Inc.	325,396	$30,948	12/31/2023
PKX	325,396	$30,948	12/31/2023
American Century Companies Inc.	299,894	$28,523	12/31/2023
PKX	299,894	$28,523	12/31/2023
Goldman Sachs Group Inc.	259,899	$24,719	12/31/2023
PKX	259,899	$24,719	12/31/2023
Northern Trust Corp	159,093	$15,131	12/31/2023
PKX	159,093	$15,131	12/31/2023
O Shaughnessy Asset Management LLC	82,688	$7,864	12/31/2023
PKX	82,688	$7,864	12/31/2023
Van ECK Associates Corp	74,705	$7,105	12/31/2023
PKX	74,705	$7,105	12/31/2023
Altrius Capital Management Inc	65,099	$6,192	12/31/2023
PKX	65,099	$6,192	12/31/2023
Segantii Capital Management Ltd	57,700	$5,543	12/31/2023
PKX	57,700	$5,543	12/31/2023
Greenline Partners LLC	53,643	$5,102	12/31/2023
PKX	53,643	$5,102	12/31/2023
Rhumbline Advisers	50,562	$4,809	12/31/2023
PKX	50,562	$4,809	12/31/2023
Oversea Chinese Banking CORP Ltd	43,661	$4,153	12/31/2023
PKX	43,661	$4,153	12/31/2023
CIBC World Markets Inc.	42,467	$4,039	12/31/2023
PKX	42,467	$4,039	12/31/2023
Bank of America Corp DE	40,186	$3,822	12/31/2023
PKX	40,186	$3,822	12/31/2023
Creative Planning	37,032	$3,522	12/31/2023
PKX	37,032	$3,522	12/31/2023
Dorsey Wright & Associates	36,791	$3,500	12/31/2023
PKX	36,791	$3,500	12/31/2023
Advisors Asset Management Inc.	35,404	$3,367	12/31/2023
PKX	35,404	$3,367	12/31/2023
UBS Group AG	34,345	$3,267	12/31/2023
PKX	34,345	$3,267	12/31/2023
Natixis Advisors L.P.	41,256	$3,235	03/31/2024
PKX	41,256	$3,235	03/31/2024
OLD Mission Capital LLC	33,113	$3,149	12/31/2023
PKX	33,113	$3,149	12/31/2023
CWA Asset Management Group LLC	33,050	$3,143	12/31/2023
PKX	33,050	$3,143	12/31/2023
Clearbridge Investments LLC	29,673	$2,822	12/31/2023
PKX	29,673	$2,822	12/31/2023
Nomura Holdings Inc.	29,540	$2,810	12/31/2023
PKX	29,540	$2,810	12/31/2023
DekaBank Deutsche Girozentrale	36,017	$2,782	03/31/2024
PKX	36,017	$2,782	03/31/2024
Millennium Management LLC	28,193	$2,681	12/31/2023
PKX	28,193	$2,681	12/31/2023
Vident Advisory LLC	28,112	$2,674	12/31/2023
PKX	28,112	$2,674	12/31/2023
Ritholtz Wealth Management	33,595	$2,635	03/31/2024
PKX	33,595	$2,635	03/31/2024
Envestnet Asset Management Inc.	27,003	$2,568	12/31/2023
PKX	27,003	$2,568	12/31/2023
CI Private Wealth LLC	25,835	$2,457	12/31/2023
PKX	25,835	$2,457	12/31/2023
Wetherby Asset Management Inc.	25,577	$2,433	12/31/2023
PKX	25,577	$2,433	12/31/2023
Stifel Financial Corp	24,861	$2,365	12/31/2023
PKX	24,861	$2,365	12/31/2023
Signaturefd LLC	23,812	$2,265	12/31/2023
PKX	23,812	$2,265	12/31/2023
Guggenheim Capital LLC	22,372	$2,128	12/31/2023
PKX	22,372	$2,128	12/31/2023
Crossmark Global Holdings Inc.	22,284	$2,120	12/31/2023
PKX	22,284	$2,120	12/31/2023
Quadrant Capital Group LLC	20,444	$1,944	12/31/2023
PKX	20,444	$1,944	12/31/2023
Gilman Hill Asset Management LLC	23,864	$1,871	03/31/2024
PKX	23,864	$1,871	03/31/2024
JustInvest LLC	18,859	$1,794	12/31/2023
PKX	18,859	$1,794	12/31/2023
FMR LLC	17,018	$1,619	12/31/2023
PKX	17,018	$1,619	12/31/2023
Bank of Montreal Can	16,476	$1,586	12/31/2023
PKX	16,476	$1,586	12/31/2023
Cerity Partners LLC	15,361	$1,461	12/31/2023
PKX	15,361	$1,461	12/31/2023
Veriti Management LLC	18,261	$1,432	03/31/2024
PKX	18,261	$1,432	03/31/2024
Nuveen Asset Management LLC	14,159	$1,347	12/31/2023
PKX	14,159	$1,347	12/31/2023
Victory Capital Management Inc.	14,132	$1,344	12/31/2023
PKX	14,132	$1,344	12/31/2023
D. E. Shaw & Co. Inc.	14,091	$1,340	12/31/2023
PKX	14,091	$1,340	12/31/2023
Mariner LLC	12,893	$1,226	12/31/2023
PKX	12,893	$1,226	12/31/2023