| Website | matrixpartners.com |
| Employees | |
| Founded | 1977 |
| Description | Early Stage VC Firm |
| Matrix IX, 7/09 | $600M |
Matrix Partners is a US based private equity investment firm focusing on venture capital investments. The firm invests in seed and early stage companies in the software, communications, semiconductors, data storage, Internet and wireless sectors.
Matrix Partners has offices in Waltham, MA, Menlo Park, CA, Mumbai, India and Beijing, China.
| Company | Date | Round | Size | Participants |
| SpiderCloud Wireless | 2/10 | Series B | $25M | 4 |
| Unidesk | 1/10 | Series B | $12.1M | 2 |
| BuyWithMe | 1/10 | Series A | $5.5M | 1 |
| SpiderCloud Wireless | 12/09 | Series A | $15M | 2 |
| GOGII | 12/09 | Series B | $8.15M | 2 |
| HubSpot | 10/09 | Series C | $16M | 3 |
| VeriVue | 9/09 | Series C | $20M | 5 |
| Skyfire Labs | 9/09 | Series B | $5M | 3 |
| Polyvore | 8/09 | Series B | $5.6M | 3 |
| Gilt Groupe | 8/09 | Series C | $43M | 2 |
| Anjuke | 8/09 | Series C | $10M | 1 |
| Intent Media | 7/09 | Series A | $8M | 1 |
| CloudSwitch | 6/09 | Series B | $8M | 3 |
| Carbon Design Systems | 5/09 | Series E | $7.5M | 3 |
| Kalido | 5/09 | Series E | $5.1M | 2 |
| Conductor | 4/09 | Series B | $10M | 2 |
| Hyper9 | 2/09 | Series B | $8M | 4 |
| CloudSwitch | 1/09 | Series A | $7.4M | 2 |
| Baofeng | 11/08 | Unattributed | $15M | 2 |
| Anjuke | 11/08 | Series B | $10M | 1 |
| Qualtré | 8/08 | Series A | $5M | 1 |
| OpenSpan | 7/08 | Series C | $13M | 5 |
| VideoIQ | 7/08 | Series B | $10M | 3 |
| VeriVue | 7/08 | Series B | $40M | 5 |
| Skyfire Labs | 5/08 | Series B | $13M | 3 |
| Tigo Energy | 5/08 | Series A | $6M | 2 |
| HubSpot | 5/08 | Series B | $12M | 2 |
| Envio Networks | 4/08 | Series B | $10M | 2 |
| Sparkroom | 3/08 | Series A | $4M | 1 |
| Crossbeam Systems | 2/08 | Series F | $3.5M | 3 |
| Renkoo | 2/08 | Series B | $6M | 2 |
| Carbon Design Systems | 1/08 | Unattributed | $6M | 3 |
| Buzzwire | 12/07 | Series B | $8M | 3 |
| Gilt Groupe | 11/07 | Series A | $5M | 1 |
| asklaila | 9/07 | Series B | $10M | 3 |
| Four Interactive | 9/07 | Series B | $10M | 3 |
| Buzzwire | 7/07 | Series A | $4M | 2 |
| Hyper9 | 7/07 | Series B | $7.2M | 2 |
| Aylus Networks | 6/07 | Series B | $15M | 2 |
| Skyfire Labs | 6/07 | Series A | $4.8M | 2 |
| Intelliden | 5/07 | Series E | $10M | 5 |
| Fanfare Group | 5/07 | Unattributed | $12M | 3 |
| Care.com | 5/07 | Series A | $3.1M | 2 |
| Veveo | 5/07 | Unattributed | $14M | 3 |
| Four Interactive | 2/07 | Series A | $2M | 1 |
| Euclid Media | 2007 | Unattributed | 1 | |
| SolidCore | 2007 | Series D | $10M | 4 |
| PostPath | 1/07 | Series C | $15M | 3 |
| Qihoo | 11/06 | Series B | $25M | 6 |
| Aruba Networks | 10/06 | Unattributed | $30M | 4 |
| Renkoo | 4/06 | Series A | $3M | 2 |
| Digital Reef | 2006 | Series A | $10M | 1 |
| PostPath | 12/04 | Series B | $9.3M | 2 |
| TheLadders | 11/04 | Series A | $7.25M | 1 |
| Rohati Systems, Inc | Series B | $11M | 2 |