46 of 46investors have filed

330new positions

358sold out

13F Q1 2026 Form 13F-HR

New and sold positions, Q1 2026

46 of the 46 investors we follow have filed their 13F for Q1 2026 (the latest on May 15, 2026). A new position was not in their previous 13F. A sold-out one is gone from this one. 13F shows long positions in US stocks, up to 45 days after the quarter ends.

New positions and sold-out positions by investor

The bar is the number of new positions; the figure shows new / sold out. The twelve investors with the most changes.

330 new positions in Q1 2026, largest share of the portfolio first.

Bill Ackman · filed May 15, 2026

New position: MSFT Microsoft Corp

15.4% of the reported portfolio, $2.1B.

13F filing on sec.gov

Triple Frond Partners · filed May 15, 2026

New position: MA Mastercard Inc

10.2% of the reported portfolio, $87.7M.

13F filing on sec.gov

Ruane Cunniff · filed May 15, 2026

New position: SUNB Sunbelt Rentals Holdings Inc

6.2% of the reported portfolio, $357.2M.

13F filing on sec.gov

Chad Williams · filed May 15, 2026

New position: SUNB Sunbelt Rentals Holdings Inc

5.4% of the reported portfolio, $143.3M.

13F filing on sec.gov

Mason Morfit · filed May 15, 2026

New position: KKR Kkr & Co Inc

5.3% of the reported portfolio, $303.4M.

13F filing on sec.gov

Thomas Russo · filed May 13, 2026

New position: SUNB Sunbelt Rentals Holdings Inc

5.2% of the reported portfolio, $393.7M.

13F filing on sec.gov

Seth Klarman · filed May 14, 2026

New position: AON Aon Plc

5.2% of the reported portfolio, $248.2M.

13F filing on sec.gov

Ruane Cunniff · filed May 15, 2026

New position: ZTS Zoetis Inc

5.0% of the reported portfolio, $286.7M.

13F filing on sec.gov

Seth Klarman · filed May 14, 2026

New position: V Visa Inc

4.4% of the reported portfolio, $212.0M.

13F filing on sec.gov

Stephen Mandel · filed May 15, 2026

New position: TER Teradyne Inc

4.4% of the reported portfolio, $555.2M.

13F filing on sec.gov

Stephen Mandel · filed May 15, 2026

New position: GLW Corning Inc

4.0% of the reported portfolio, $505.6M.

13F filing on sec.gov

Seth Klarman · filed May 14, 2026

New position: TFX Teleflex Incorporated

4.0% of the reported portfolio, $190.8M.

13F filing on sec.gov

Stephen Mandel · filed May 15, 2026

New position: MTZ Mastec Inc

3.9% of the reported portfolio, $492.6M.

13F filing on sec.gov

Philippe Laffont · filed May 15, 2026

New position: EQIX Equinix Inc

3.7% of the reported portfolio, $1.1B.

13F filing on sec.gov

David Rolfe · filed May 15, 2026

New position: PGR Progressive Corp

3.4% of the reported portfolio, $16.5M.

13F filing on sec.gov

Francois Rochon · filed May 15, 2026

New position: ADP Automatic Data Proc Inc

3.3% of the reported portfolio, $85.2M.

13F filing on sec.gov

David Tepper · filed May 15, 2026

New position: SNDK Sandisk Corp

3.3% of the reported portfolio, $178.7M.

13F filing on sec.gov

Mason Morfit · filed May 15, 2026

New position: SPOT Spotify Technology S A

3.0% of the reported portfolio, $173.8M.

13F filing on sec.gov

Thomas Russo · filed May 13, 2026

New position: Eurofins Scientific

3.0% of the reported portfolio, $223.6M.

13F filing on sec.gov

Stephen Mandel · filed May 15, 2026

New position: USFD Us Foods Hldg Corp

2.8% of the reported portfolio, $350.0M.

13F filing on sec.gov

Stephen Mandel · filed May 15, 2026

New position: PFGC Performance Food Group Co

2.7% of the reported portfolio, $340.8M.

13F filing on sec.gov

Stephen Mandel · filed May 15, 2026

New position: MCK Mckesson Corp

2.7% of the reported portfolio, $339.4M.

13F filing on sec.gov

Andreas Halvorsen · filed May 15, 2026

New position: AAPL Apple Inc

2.5% of the reported portfolio, $911.9M.

13F filing on sec.gov

Stephen Mandel · filed May 15, 2026

New position: CIEN Ciena Corp

2.5% of the reported portfolio, $314.3M.

13F filing on sec.gov

David Rolfe · filed May 15, 2026

New position: TOL Toll Brothers Inc

2.5% of the reported portfolio, $12.0M.

13F filing on sec.gov

Dan Loeb · filed May 15, 2026

New position: META Meta Platforms Inc

2.5% of the reported portfolio, $51.5M.

13F filing on sec.gov

Li Lu · filed May 15, 2026

New position: TME Tencent Music Entmt Group

2.5% of the reported portfolio, $61.2M.

13F filing on sec.gov

Dan Loeb · filed May 15, 2026

New position: GOOGL Alphabet Inc

2.4% of the reported portfolio, $50.3M.

13F filing on sec.gov

Stephen Mandel · filed May 15, 2026

New position: WULF Terawulf Inc

2.3% of the reported portfolio, $287.5M.

13F filing on sec.gov

Philippe Laffont · filed May 15, 2026

New position: ASML Asml Hldg Nv

2.3% of the reported portfolio, $655.4M.

13F filing on sec.gov

Stephen Mandel · filed May 15, 2026

New position: HUT Hut 8 Corp

2.3% of the reported portfolio, $285.2M.

13F filing on sec.gov

Christopher Bloomstran · filed May 15, 2026

New position: BLDR Builders Firstsource Inc

2.2% of the reported portfolio, $18.8M.

13F filing on sec.gov

Chuck Akre · filed May 14, 2026

New position: CRM Salesforce Inc

2.2% of the reported portfolio, $134.0M.

13F filing on sec.gov

Chris Davis · filed May 7, 2026

New position: LYB Lyondellbasell Industries N.v.

2.1% of the reported portfolio, $450.9M.

13F filing on sec.gov

Li Lu · filed May 15, 2026

New position: SPGI S&p Global Inc

2.1% of the reported portfolio, $51.7M.

13F filing on sec.gov

Li Lu · filed May 15, 2026

New position: HRB Block H & R Inc

2.1% of the reported portfolio, $51.6M.

13F filing on sec.gov

Li Lu · filed May 15, 2026

New position: MCO Moodys Corp

2.1% of the reported portfolio, $51.4M.

13F filing on sec.gov

Stanley Druckenmiller · filed May 15, 2026

New position: AVGO Broadcom Inc

2.1% of the reported portfolio, $60.6M.

13F filing on sec.gov

Polen Capital · filed May 14, 2026

New position: META Meta Platforms Inc

2.0% of the reported portfolio, $272.7M.

13F filing on sec.gov

Dan Loeb · filed May 15, 2026

New position: GLD Spdr Gold Tr

2.0% of the reported portfolio, $40.9M.

13F filing on sec.gov