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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 5 of 23 rows. Rows without a quote are marked unavailable.

1MUMICRON TECHNOLOGY INC29.54%-51,655,434$1.22B$23.66No quote
2VSATVIASAT INC19.02%Add +2.4%11,395,900$786.77M$69.04No quote
3THRXTHERAVANCE INC15.49%Add +2.8%20,705,801$640.64MNo quoteNo quote
4LNGCHENIERE ENERGY INC7.57%New5,660,000$313.28MNo quoteNo quote
5IDIXIDENIX PHARMACEUTICALS INC7.32%Add +44.5%53,331,109$302.84MNo quoteNo quote
6BPBP PLC3.68%Reduce -44.1%3,166,413$152.3M$48.10No quote
7PBFPBF ENERGY INC3.38%Add +174.0%5,416,606$139.75M$25.80No quote
8KERXKERYX BIOPHARMACEUTICALS INC2.60%New6,310,850$107.54MNo quoteNo quote
9NGNOVAGOLD RES INC1.89%-21,688,300$78.3M$3.61No quote
10IMOSCHIPMOS TECH BERMUDA LTD1.75%-3,283,235$72.43MNo quoteNo quote
11CWSACITIGROUP INC1.62%-104,246,007$66.93MNo quoteNo quote
12RFMDRF MICRODEVICES INC1.25%New6,585,000$51.89MNo quoteNo quote
13TQNTTRINQUINT SEMICONDUCTOR INC1.24%New3,825,000$51.22MNo quoteNo quote
14KINKINDRED BIOSCIENCES INC1.24%Reduce -4.7%2,763,848$51.21MNo quoteNo quote
15ELOSSYNERON MEDICAL LTD1.20%-4,000,000$49.8MNo quoteNo quote
16AOIALLIANCE ONE INTL INC0.45%-6,383,641$18.64MNo quoteNo quote
17AIGWSAMERICAN INTL GROUP INC0.32%-656,443$13.42MNo quoteNo quote
18NCQNOVACOPPER INC0.16%-5,005,298$6.76MNo quoteNo quote
19AVEOAVEO PHARMACEUTICALS INC0.14%-3,829,350$5.73MNo quoteNo quote
20ALDWALON USA PARTNERS LP0.13%-329,188$5.48MNo quoteNo quote
23ROVIROVI CORP-Sold0$0No quoteNo quote
22FNFFIDELITY NATIONAL FINANCIAL-Sold0$0No quoteNo quote
21ENZNENZON PHARMACEUTICALS INC-Sold0$0No quoteNo quote