MAGN in the 13F filings

Magnera Corp · CUSIP 55939A107

Quarter

Q2 2026 Q4 2024

Quarter end: 30 Jun 2026; the date the book describes
Filed: 2 Sep 2026; latest of these filings; the earliest 3 Aug 2026
Managers listing it: 15; at least, of 95 tracked, among listed positions
Comparable managers: 91; filed both Q1 2026 and Q2 2026; 0 listed it in both
Shares listed: 3,015,811; combined, among listed positions
Reported value: $35m; combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 11 buyers (opened or added shares) and 9 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -49,168.

Managers listing MAGN in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

ActionShare of book at least

15 of 15 holders

				Action		Filing
D. E. Shaw & Co.	789,745	$9.3m	under 0.1%	Trimmed	-106,470	14 Aug 2026 (the filing on sec.gov)
Verition Fund Management LLC	607,303	$7.1m	under 0.1%	Added	+175,000	14 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC	479,549	$5.6m	under 0.1%	Added	+333,970	14 Aug 2026 (the filing on sec.gov)
Squarepoint Ops LLC	217,272	$2.6m	under 0.1%	Added	+39,394	14 Aug 2026 (the filing on sec.gov)
Man Group PLC	207,170	$2.4m	under 0.1%	Added	+21,740	14 Aug 2026 (the filing on sec.gov)
Tudor Investment Corp	147,495	$1.7m	under 0.1%	Trimmed	-121,755	14 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC	135,285	$1.6m	under 0.1%	Trimmed	-179,534	2 Sep 2026 (the filing on sec.gov)
Invesco Ltd	99,714	$1.2m	under 0.1%	Trimmed	-14,163	14 Aug 2026 (the filing on sec.gov)
Balyasny Asset Management LLC	81,310	$955k	under 0.1%	New	new	14 Aug 2026 (the filing on sec.gov)
Fidelity (FMR LLC)	74,250	$872k	under 0.1%	Added	+7,443	13 Aug 2026 (the filing on sec.gov)
Quantbot Technologies LP	54,017	$635k	under 0.1%	Added	+41,504	12 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc	37,610	$442k	under 0.1%	Added	+1,598	14 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP	39,134	$372k	under 0.1%	Added	+3,600	14 Aug 2026 (the filing on sec.gov)
Two Sigma Investments LP	24,741	$291k	under 0.1%	Added	+1,260	14 Aug 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP	21,216	$249k	under 0.1%	New	new	14 Aug 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

There is no earlier quarter on file to compare with.

Increases

AQR Capital Management LLCexisting position · 479,549 shares now+333,970
Verition Fund Management LLCexisting position · 607,303 shares now+175,000
Balyasny Asset Management LLCnew position · 81,310 shares now+81,310
Quantbot Technologies LPexisting position · 54,017 shares now+41,504
Squarepoint Ops LLCexisting position · 217,272 shares now+39,394

Reductions

Citadel Advisors LLCexisting position · 135,285 shares now-179,534
Tudor Investment Corpexisting position · 147,495 shares now-121,755
D. E. Shaw & Co.existing position · 789,745 shares now-106,470
Invesco Ltdexisting position · 99,714 shares now-14,163

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (2)

Exited (5)

Millennium Management LLCwas $1.9m
ExodusPoint Capital Management LPwas $548k
Marshall Wace LLPwas $525k
Walleye Capital LLCwas $291k
Susquehanna International Group LLPwas $112k

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.

2 in Q4 2024 to 1 in Q2 2026

Tracked managers listing it, at least.

the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

MAGN and LIN →MAGN and GLW →MAGN and HWM →Choose a stock to compare with MAGN →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own MAGN, latest filings →Back to the 13F Explorer →

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