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
1-YearTWR
+4.25%
since 2024Q4
3-YearTWR
+68.99%
since 2022Q4
5-YearTWR
+59.33%
since 2020Q4
10-Year
—
insufficient history
Performance overview
We mark Southeastern Asset (Longleaf)'s disclosed portfolio to current market prices and compare its growth against the S&P 500 (SPY). Southeastern's portfolio is 4.2% over the last 12 months · 82.7% since 2016Q1.
Portfolio growth vs SPY
Rebased to 100 at 2016Q1 · through 2025Q4
Southeastern Asset
+173.9%
SPY
—
Portfolio line is the GIPS-compliant time-weighted return chain-linked across the manager's quarterly 13F filings — unaffected by capital flows. Quarters with insufficient held-through coverage are skipped, which can briefly flatten the line.
Capital flow per quarter
BuysSellsNet
Latest · 2025Q4
+$233M
Lifetime buys
$4.60B
Lifetime sells
$7.57B
Portfolio over time
AUMPositions
QoQ AUM
+14.6%
16Q lifetime AUM
-60.3%
QoQ positions
+4
16Q lifetime positions
+16
Position concentration
53 positions