Demo Day

Definition

An event where startup cohorts (usually from accelerators like Y Combinator) pitch to 500+ investors in rapid-fire succession—speed dating for capital.

Example Usage

We pitched at Y Combinator Demo Day and had 50 investor meetings scheduled within 48 hours.

Origin

Popularized by Y Combinator in the early 2000s as a way to connect founders with investors.

Fun Fact

Y Combinator Demo Day is the most exclusive startup event in the world; companies frequently raise $10-100M from a single day.

Source: Accelerator and startup terminology

Related Terms

Intermediate

extension round

Additional capital raised on the same terms as the previous round (like a Series A-1) rather than progressing to the next stage, buying time without the stigma of a flat or down round. The startup equivalent of taking an incomplete rather than failing the course.

🚀 Startup / VC

Intermediate

follow-on funding

Additional investment in portfolio companies by existing investors in subsequent rounds. Doubling down on your bets or, less charitably, throwing good money after bad while hoping the first investment wasn't a complete disaster.

🚀 Startup / VC

Intermediate

proprietary deal

An investment opportunity sourced exclusively by one firm rather than through competitive process. The venture capital equivalent of finding $20 in your coat pocket—rare, lucky, and probably won't happen again.

🚀 Startup / VC

Advanced

breaking the syndicate

When a startup seeks a lead investor for their next round who isn't part of their existing investor group, potentially signaling problems or a desire for fresh perspectives. It's the venture capital equivalent of changing friend groups.

🚀 Startup / VC

Advanced

acceleration clause

A provision that speeds up the vesting of unvested equity upon specific events like acquisition or termination. It's the golden parachute for startup employees who might otherwise get screwed by good news.

🚀 Startup / VC

Beginner

pay-it-forward mentality

The cultural expectation in startup ecosystems that successful entrepreneurs and investors should help newcomers, supposedly creating a virtuous cycle. In practice, it's often networking disguised as altruism.

🚀 Startup / VC

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