Asset Manager · CIK 0000807985
Southeastern Asset
Longleaf
Southeastern Asset runs Longleaf, an asset manager overseeing $2.25B in disclosed equity holdings (SEC CIK 0000807985). The latest portfolio (2025Q4) discloses 53 positions across 10 sectors, with the largest positions in CNX, MAT and IAC. On a mark-to-market basis the tracked portfolio has returned 4.2% over the past year. OpenStocks tracks 40 consecutive quarterly snapshots for this manager — every position change, new entry, and exit is logged below.
Portfolio
$2.25B
Positions
53
Quarter
2025Q4
Filings tracked
40
Capital flow per quarter
BuysSellsNet
Latest · 2025Q4
+$233M
Lifetime buys
$4.60B
Lifetime sells
$7.57B
Quarter activity
What changed in 2025Q1 — net new, added, trimmed, exited.
New positions3 names
Added to4 names
Trimmed20 names
- AMGAFFILIATED MANAGERS GROUP IN−222,716$37.4M
- MATMATTEL INC−793,410$15.4M
- ACIALBERTSONS COS INC−698,544$15.4M
- MGMMGM RESORTS INTERNATIONAL−480,184$14.2M
- IACIAC INTERACTIVECORP NEW−296,448$13.6M
- OSCROSCAR HEALTH INC−1,034,299$13.6M
- L6388FMILLICOM INTL CELLULAR S A−393,284$11.9M
- FISFIDELITY NATL INFORMATION SV−152,876$11.4M
- KHCKRAFT HEINZ CO−373,567$11.4M
- N20944CNH INDL N V−885,456$10.9M
- FDXFEDEX CORP−41,625$10.1M
- PCHPOTLATCHDELTIC CORPORATION−168,811$7.6M
- + 8 more…
Recent transactions
Last 20 moves
TRIM
FIDELITY NATL INFORMATION SV
−3,960
~$66.46 · 2025Q4
2026-02-13
ADD
FORTUNE BRANDS HOME & SEC IN
+162,501
~$50.02 · 2025Q4
2026-02-13
NEW
FISERV INC
+3,990
~$67.17 · 2025Q4
2026-02-13
TRIM
AFFILIATED MANAGERS GROUP IN
−1,276
~$288.28 · 2025Q4
2026-02-13
ADD
CLEARWATER PAPER CORP
+443,009
~$17.40 · 2025Q4
2026-02-13
ADD
EMPIRE ST RLTY TR INC
+1,074,096
~$6.52 · 2025Q4
2026-02-13
