United States · 
Who invested in XO Group, Inc.?
XO Group, Inc.'s investors include Hummer Winblad Venture Partners, AOL and Novacap.
1996199719981999
$1.6MSeries A$3.0MSeries B$15MSeries CUnited States · Series C startup
Who invested in XO Group, Inc.
3 rounds we have observed, with the 3 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
Funding summaryUpdated 26 Oct 2026
$20Mraised across 3 rounds since 1996, from 3 sources
$1.6MSeries A$3.0MSeries B$15MSeries C
- Latest round
- Series C, $15MApr 1999
- Step-upi
- 5×
- Investors
- 3
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Series A, $1.6M Jan 1996
- Biggest round
- $15M Series C · Apr 1999
- Usual gap between rounds
- 2.3 years the median of 2
The rounds
- Apr 1999
- Apr 1998
- Jan 1996
Who was in which round
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Quick answers about XO Group, Inc.
How much has XO Group, Inc. raised?
XO Group, Inc. has raised $20M across 3 rounds since 1996.
When did XO Group, Inc. last raise?
XO Group, Inc.'s most recent round was a Series C of $15M in Apr 1999.
What was XO Group, Inc.'s biggest round?
Its most recent round, $15M in Apr 1999, is also its largest on record.
Who backed XO Group, Inc. first?
XO Group, Inc.'s first round on record, in Jan 1996, was backed by AOL.
What stage is XO Group, Inc. at?
XO Group, Inc.'s latest named round is a Series C, in Apr 1999.
Where is XO Group, Inc. based?
XO Group, Inc. is based in the United States.
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