Soros Fund Management Family office
George Soros, Robert Soros, Jonathan Soros · George Soros's investment firm, which returned outside capital in 2011 and has since managed the family's and the Open Society Foundations' money.
Largest known positions
13F + Form 4Each company's largest reported value across this investor's 13F filings (quarter-end value) and Form 4 insider filings (shares held × latest price). Colour shows the source.
Filing timeline
Every 13F quarter, open-market Form 4 trade and 5%+ stake filing (Schedule 13D/G) on one axis.
Timeline
Top lane: reported 13F value each quarter. Middle: open-market Form 4 purchases (green) and sales (red), sized by dollars. Bottom: Schedule 13D (activist) and 13G (passive) filings for 5%+ stakes. Hover for details.
Recent filings
| Filed | Form | Filer | Company | Detail | |
|---|---|---|---|---|---|
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SOROS FUND MANAGEMENT LLC
13F portfolio · $8.1B across 266 positions as of 2026-06-30 · full filing detail →
Insider (Form 4) stakes
Companies where this investor reports as an officer, director or 10% owner.
SOROS FUND MANAGEMENT LLC
21 filings| Company | Role | Shares | Value | Last filing |
|---|---|---|---|---|
| BFLY BLUEFLY INC | 10% owner | 6,480,070 | $60M | 2011-09-09 stale |
| EXA EXA CORP | 10% owner | 1,731,357 | — | 2017-09-27 stale |
| SIGM SIGMA DESIGNS INC | 10% owner | 5,118,789 | — | 2017-09-19 stale |
| DRIV DIGITAL RIVER INC /DE | 10% owner | — | — | 2014-03-06 stale |
| EXAR EXAR CORP | 10% owner | 6,466,666 | — | 2010-12-09 stale |
| MAPP MAP Pharmaceuticals, I | 10% owner | — | — | 2009-05-26 stale |
GEORGE SOROS
42 filings| Company | Role | Shares | Value | Last filing |
|---|---|---|---|---|
| MAPP MAP Pharmaceuticals, I | 10% owner | 3,813,020 | $107M | 2010-03-08 stale |
| BFLY BLUEFLY INC | 10% owner | 6,491,824 | $60M | 2012-04-03 stale |
| SIGM SIGMA DESIGNS INC | 10% owner | 5,118,789 | — | 2018-08-16 stale |
| EXAR EXAR CORP | 10% owner | 4,964,428 | — | 2014-01-24 stale |
| DRIV DIGITAL RIVER INC /DE | 10% owner | — | — | 2014-01-06 stale |
| AUDC AUDIOCODES LTD | 10% owner | — | — | 2008-07-11 stale |
| BFLYD BLUEFLY INC | 10% owner | — | — | 2008-04-08 stale |
| LLL JETBLUE AIRWAYS CORP | 10% owner | 19,396,595 | — | 2007-06-21 stale |
ROBERT SOROS
21 filings| Company | Role | Shares | Value | Last filing |
|---|---|---|---|---|
| MAPP MAP Pharmaceuticals, I | 10% owner | 2,826,169 | $79M | 2010-03-16 stale |
| EXA EXA CORP | 10% owner | 1,730,657 | — | 2017-09-21 stale |
| SIGM SIGMA DESIGNS INC | 10% owner | 4,368,819 | — | 2017-06-09 stale |
| QTM QUANTUM CORP /DE/ | 10% owner | — | — | 2015-01-30 stale |
| DRIV DIGITAL RIVER INC /DE | 10% owner | — | — | 2014-01-27 stale |
| WBMD WebMD Health Corp. | 10% owner | — | — | 2013-10-02 stale |
| EXAR EXAR CORP | 10% owner | 5,994,834 | — | 2013-07-29 stale |
| AUDC AUDIOCODES LTD | 10% owner | — | — | 2008-07-30 stale |
JONATHAN T ALLAN SOROS
17 filings| Company | Role | Shares | Value | Last filing |
|---|---|---|---|---|
| PACK Ranpak Holdings Corp. | 10% owner | 30,530,897 | $134M | 2021-12-27 stale |
| MAPP MAP Pharmaceuticals, I | 10% owner | 2,049,049 | $58M | 2010-05-13 stale |
| PACK.WS Ranpak Holdings Corp. | 10% owner | 29,203,635 | — | 2019-12-13 stale |
| EXAR EXAR CORP | 10% owner | 6,618,200 | — | 2011-05-10 stale |
| AUDC AUDIOCODES LTD | 10% owner | — | — | 2008-10-21 stale |
About this profile
Large investors show up in SEC filings under several names. A family office usually files a 13F (quarterly holdings, if it manages over $100M in US equities) under its firm name, while the same money appears in Form 4 filings under the person's or holding company's name when it owns 10% or more of a company or sits on its board. Some — like Cascade Investment — hold most of their stock through large ownership stakes and file no 13F at all.
This page joins those filings into one view. 13F values are as of quarter end and are filed up to 45 days later. Form 4 values use the latest share count reported times a recent price. Neither shows cash, bonds, private companies or short positions.