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Focused investors/Seth Klarman

Seth Klarman - Baupost Group

As of Q2 2026, Seth Klarman reported 23 long-equity positions worth $5.42B in aggregate.

Copy-investor backtest

Latest quarter
+3.22%
1-year
+20.94%
3-year
+48.31%
5-year
+12.01%
3-year vs S&P 500
-25.70%
5-year vs S&P 500
-61.90%
5-year top 5
-0.29%

Return from mechanically copying the disclosed 13F equity portfolio after each filing and rebalancing at the next. The vs S&P 500 figures subtract SPY over that manager's own rebalance dates, so both sides cover the same days; both are price return, excluding dividends. Method & limitations.

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Updated 2026-06-06 from SEC 13F data.

Live quotes available for 6 of 25 rows. Rows without a quote are marked unavailable.

1MUMICRON TECHNOLOGY INC27.72%-51,655,434$1.7B$32.95No quote
2IDIXIDENIX PHARMACEUTICALS INC20.67%-53,331,109$1.27BNo quoteNo quote
3VSATVIASAT INC10.89%Add +1.2%11,533,137$668.46M$57.96No quote
4THRXTHERAVANCE INC9.89%Reduce -1.5%20,395,056$607.37MNo quoteNo quote
5LNGCHENIERE ENERGY INC6.99%Add +5.8%5,987,930$429.34MNo quoteNo quote
6EBAYEBAY INC3.62%New4,436,300$222.08M$50.06No quote
7TBPHTHERAVANCE BIOPHARMA INC3.15%New6,061,228$193.23MNo quoteNo quote
8KERXKERYX BIOPHARMACEUTICALS INC2.64%Add +67.0%10,539,986$162.11MNo quoteNo quote
9PBFPBF ENERGY INC2.43%Add +3.3%5,595,286$149.11M$26.65No quote
10RFMDRF MICRODEVICES INC1.52%Add +48.2%9,759,185$93.59MNo quoteNo quote
11TQNTTRINQUINT SEMICONDUCTOR INC1.51%Add +53.7%5,880,696$92.97MNo quoteNo quote
12NGNOVAGOLD RES INC1.49%-21,688,300$91.31M$4.21No quote
13IMOSCHIPMOS TECH BERMUDA LTD1.29%-3,283,235$79.22MNo quoteNo quote
14CWSACITIGROUP INC1.22%Add +17.6%122,573,007$74.76MNo quoteNo quote
15SEMISUNEDISON SEMICONDUCTOR LTD1.14%New4,145,379$70.18MNo quoteNo quote
16KOSKOSMOS ENERGY LTD0.87%New4,750,000$53.34MNo quoteNo quote
17KINKINDRED BIOSCIENCES INC0.84%-2,763,848$51.52MNo quoteNo quote
18ELOSSYNERON MEDICAL LTD0.67%-4,000,000$41.28MNo quoteNo quote
19BYDBOYD GAMING CORP0.55%New2,794,630$33.9M$12.13No quote
20AIGWSAMERICAN INTL GROUP INC0.34%Add +20.2%788,998$20.99MNo quoteNo quote
21AOIALLIANCE ONE INTL INC0.26%-6,383,641$15.96MNo quoteNo quote
22AVEOAVEO PHARMACEUTICALS INC0.11%-3,829,350$7.01MNo quoteNo quote
23ALDWALON USA PARTNERS LP0.10%-329,188$5.9MNo quoteNo quote
24NCQNOVACOPPER INC0.09%-5,005,298$5.46MNo quoteNo quote
25BPBP PLC-Sold0$0No quoteNo quote