Quantum Portfolio Management LLC

Position in GPK — Graphic Packaging Holding Co

CIK 2003672 New York, NY

Position in GPK

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$117,929

-$59,897 QoQ

Shares Held

11,157

-37.6% QoQ

Ownership

0.004%

of shares outstanding

% of Portfolio

0.06%

of 13F equity value

Holder Rank

#360

of 498 holders

Holding Since

Dec 2023

7 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Consumer Cyclical · as of Jun 30, 2026

Quantum Portfolio Management LLC holds $1,350,850 across 6 Packaging & Containers names. GPK ranks #5 (8.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AMCR	Amcor plc	16,974	$735,822
2	SON	Sonoco Products Co	3,052	$171,980
3	REYN	Reynolds Consumer Products Inc.	4,962	$133,229
4	SLGN	Silgan Holdings Inc	2,823	$130,958
5	GPK	Graphic Packaging Holding Co This page	11,157	$117,929
6	GEF	Greif, Inc	818	$60,932

7 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$117,929	11,157	-37.6%	Shares	Sole	2026-08-14
2026-03-31	$177,826	17,890	+6.0%	Shares	Sole	2026-05-01
2025-12-31	$254,212	16,880	+8.1%	Shares	Sole	2026-02-12
2025-09-30	$305,507	15,611	+5.4%	Shares	Sole	2025-10-29
2025-06-30	$312,067	14,811	+47.0%	Shares	Sole	2025-08-13
2025-03-31	$261,572	10,076	-17.6%	Shares	Sole	2025-05-14
2023-12-31	$301,592	12,235	—	Shares	Sole	2024-01-26
No filing history on record for this holder in this stock.