Yahoo-Tumblr is among top 10 tech deals in 2013

San Francisco: Yahoo has agreed to pay $1.1 billion to buy blogging forum Tumblr, ranking it in among the top 10 tech deals announced this year, according to research firm Dealogic. Here’s a list of the top 10 tech mergers and acquisitions in 2013. Valuation is based on Dealogic’s criteria and includes debt.

1. Dell Inc., to Silver Lake Management LLC (original bid), Feb. 5, 2013, $20.7 billion for 85 percent of company.

2. Dell Inc., to Icahn Enterprises LP and Southeastern Asset Management Inc. (competing bid), March 25, 2013, $18.9 billion for 87 percent of company.

3. BMC Software Inc., to Bain Capital Partners and others, May 6, 2013, $7.2 billion.

4. Acme Packet Inc., to Oracle Corp., Feb. 4, 2013, $2 billion.

5. Allflex Holdings, to BC Partners Ltd., May 3, 2013, $1.3 billion.

6. BGC Partners Inc. (eSpeed platform), to NASDAQ OMX Group Inc., April 1, 2013, $1.2 billiion

7. Tumblr Inc., to Yahoo Inc., May 20, 2013, $1.1 billion.

(tie) CompuCom Systems Inc. to Thomas H Lee Partners LP, April 8, 2013, $1.1 billion.

9. Power-One Inc., to ABB Ltd., April 22, 2013, $1.03 billion.

10. Open Solutions Inc., to Fiserv Inc., Jan. 14, 2013, $1.02 billion.