Mariner’s Magnera Corp MAGN Stock Holding History

Mariner’s Portfolio MAGN Stock Details MAGN Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$180K	Buy	+15,281	New	+$167K	﹤0.01%	3192
2023 Q3	–	Sell	-880	Closed	-$34.5K	–	3032
2023 Q2	$34.5K	Sell	880 -495	-36%	-$22.4K	﹤0.01%	2748
2023 Q1	$57K	Sell	1,375 -4	-0.3%	-$184	﹤0.01%	2647
2022 Q4	$50K	Sell	1,379 -485	-26%	-$19.8K	﹤0.01%	2611
2022 Q3	$75K	Buy	+1,864	New	+$130K	﹤0.01%	2261
2022 Q2	–	Sell	-1,604	Closed	-$258K	–	1466
2022 Q1	$258K	Buy	+1,604	New	+$317K	﹤0.01%	1324

Other funds holding MAGN

Newtyn Management New York $801M AUM 23.14% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

ECM

Engine Capital Management New York $1.03B AUM 4.33% 1-Year Est. Return

Littlejohn & Co Greenwich, Connecticut $78.6M AUM 1.93% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

MAP

Madison Avenue Partners New York $2.32B AUM 132.6% 1-Year Est. Return

DCP

Diameter Capital Partners New York $1.24B AUM 137.67% 1-Year Est. Return

DCM

DG Capital Management New York $475M AUM 36.12% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Mariner's MAGN Position: Q2 2026 in Review

Mariner opened a new position in Magnera Corp (MAGN) in Q2 2026: 15,281 shares worth $180K. The stake represents ﹤0.01% of the portfolio and ranks #3192 among its holdings. This is a return to the name: Mariner previously reported a position in MAGN as recently as Q2 2023.

Mariner first reported a position in MAGN in Q1 2022 and has held it in 6 quarters since. The position peaked at $258K in Q1 2022. 180 funds tracked by Wall St. Rank hold MAGN as of Q2 2026.

Mariner held 15,281 shares of Magnera Corp worth $180K as of Q2 2026.
Magnera Corp was a new Mariner position in Q2 2026.
Magnera Corp made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #3192 holding.
Mariner first reported a position in Magnera Corp in Q1 2022 and has held it in 6 quarters since.
Mariner's Magnera Corp position peaked at $258K in Q1 2022.
180 funds tracked by Wall St. Rank held Magnera Corp as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.