Mason Hawkins

Net selling

Southeastern Asset Management Inc/Tn/ — managed by Mason Hawkins; US equity positions disclosed quarterly via SEC 13F

Data as of 2026-03-31 (filed 2026-05-15) · Source: SEC EDGAR

Portfolio value$2.03B（−9%）

Holdings49（−4）

Latest period2026-03-31

Top holdingRayonier Inc

Portfolio overview

Southeastern Asset Management Inc/Tn/'s most recent 13F filing, for the quarter ended 2026-03-31, reports 49 positions worth $2.03B. The top 5 holdings represent 42% of that value, a moderately concentrated portfolio.

The single largest position is Rayonier Inc at 10.9% of the portfolio, followed by Mattel Inc at 9.2% and Iac Inc at 7.9%.

Against the prior quarter, Mason Hawkins opened 0 new positions, exited 4, added to 12, and trimmed 15. The most notable sale was the full exit from Potlatchdeltic Corporation.

Across all 8 quarters on file, Mattel Inc has appeared in every filing, as has Iac Inc. Mattel Inc currently ranks second by value.

A 13F is filed roughly 45 days after quarter-end and covers only long positions in US-listed equities, so it is a lagging and partial view of the portfolio. Source: SEC EDGAR.

High-conviction

Rayonier IncRYNAdding · 3q

Added for 3 straight quarters.

Mattel IncMATAdding · 4q

Added for 4 straight quarters.

Albertsons Cos IncACIAdding · 3q

Added for 3 straight quarters.

Holdings

Security	Value	Shares	Weight (prev→now)
Rayonier IncRYN	$221.9M	10,762,643	5.5% → 10.9% ▲
Mattel IncMAT	$186.2M	12,812,157	7.6% → 9.2% ▲
Iac IncPPLI	$161.0M	4,022,729	6.9% → 7.9% ▲
Cnx Res CorpCNX	$154.7M	4,014,111	7.8% → 7.6% ▼
Albertsons Cos IncACI	$126.4M	7,419,801	4.7% → 6.2% ▲
Regeneron PharmaceuticalsREGN	$101.0M	130,662	5.7% → 5.0% ▼
Kraft Heinz CoKHC	$88.8M	3,948,713	4.8% → 4.4% ▼
Fedex CorpFDX	$88.2M	247,495	4.6% → 4.3% ▼
Fortune Brands Innovations IFBIN	$83.9M	2,153,285	2.6% → 4.1% ▲
Mgm Resorts InternationalMGM	$61.5M	1,662,961	3.3% → 3.0% ▼
Pvh CorporationPVH	$51.4M	736,935	2.2% → 2.5%
Gci Liberty IncGLIBK	$49.2M	1,321,110	2.2% → 2.4%
Tripadvisor IncTRIP	$49.0M	4,598,068	1.8% → 2.4% ▲
Bio Rad Labs IncBIO	$45.4M	162,804	3.1% → 2.2% ▼
Shenandoah TelecommunicationSHEN	$45.3M	2,940,296	1.5% → 2.2%
White Mtns Ins Group Ltd	$41.4M	18,864	2.9% → 2.0% ▼
Cnh Indl N V	$40.9M	3,716,808	1.5% → 2.0%
Graham Hldgs CoGHC	$39.9M	37,760	1.7% → 2.0% ▲
Fidelity Natl Information SvFIS	$38.8M	827,501	1.8% → 1.9% ▲
Empire St Rlty Tr IncESRT	$33.7M	6,473,317	1.1% → 1.7% ▲
Acm Resh IncACMR	$30.8M	782,900	3.0% → 1.5% ▼
New Oriental Ed & TechnologyEDU	$29.6M	522,280	0.9% → 1.5% ▲
Atlanta Braves Hldgs IncBATRK	$28.7M	671,014	1.2% → 1.4%
Dole Plc	$27.6M	1,933,708	1.3% → 1.4%
Avantor IncAVTR	$27.6M	3,520,212	1.8% → 1.4% ▼

Rayonier IncRYN
Value$221.9MWeight (prev→now)5.5% → 10.9% ▲
Mattel IncMAT
Value$186.2MWeight (prev→now)7.6% → 9.2% ▲
Iac IncPPLI
Value$161.0MWeight (prev→now)6.9% → 7.9% ▲
Cnx Res CorpCNX
Value$154.7MWeight (prev→now)7.8% → 7.6% ▼
Albertsons Cos IncACI
Value$126.4MWeight (prev→now)4.7% → 6.2% ▲
Regeneron PharmaceuticalsREGN
Value$101.0MWeight (prev→now)5.7% → 5.0% ▼
Kraft Heinz CoKHC
Value$88.8MWeight (prev→now)4.8% → 4.4% ▼
Fedex CorpFDX
Value$88.2MWeight (prev→now)4.6% → 4.3% ▼
Fortune Brands Innovations IFBIN
Value$83.9MWeight (prev→now)2.6% → 4.1% ▲
Mgm Resorts InternationalMGM
Value$61.5MWeight (prev→now)3.3% → 3.0% ▼
Pvh CorporationPVH
Value$51.4MWeight (prev→now)2.2% → 2.5%
Gci Liberty IncGLIBK
Value$49.2MWeight (prev→now)2.2% → 2.4%
Tripadvisor IncTRIP
Value$49.0MWeight (prev→now)1.8% → 2.4% ▲
Bio Rad Labs IncBIO
Value$45.4MWeight (prev→now)3.1% → 2.2% ▼
Shenandoah TelecommunicationSHEN
Value$45.3MWeight (prev→now)1.5% → 2.2%
White Mtns Ins Group Ltd
Value$41.4MWeight (prev→now)2.9% → 2.0% ▼
Cnh Indl N V
Value$40.9MWeight (prev→now)1.5% → 2.0%
Graham Hldgs CoGHC
Value$39.9MWeight (prev→now)1.7% → 2.0% ▲
Fidelity Natl Information SvFIS
Value$38.8MWeight (prev→now)1.8% → 1.9% ▲
Empire St Rlty Tr IncESRT
Value$33.7MWeight (prev→now)1.1% → 1.7% ▲
Acm Resh IncACMR
Value$30.8MWeight (prev→now)3.0% → 1.5% ▼
New Oriental Ed & TechnologyEDU
Value$29.6MWeight (prev→now)0.9% → 1.5% ▲
Atlanta Braves Hldgs IncBATRK
Value$28.7MWeight (prev→now)1.2% → 1.4%
Dole Plc
Value$27.6MWeight (prev→now)1.3% → 1.4%
Avantor IncAVTR
Value$27.6MWeight (prev→now)1.8% → 1.4% ▼

Showing top 25 of 49 positions

Exited this quarter (4)Potlatchdeltic Corporation、Disney Walt Co、Louisiana Pac Corp、Owens & Minor Inc

Sources· SEC EDGAR 13F as of 2026-05-15

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