Signal Round

In venture capital, "signaling" refers to what an existing investor's behavior communicates to the market. A signal round specifically refers to when an insider — typically a VC that already holds a board seat and has full information — makes (or refuses to make) a follow-on investment. Their actions are watched closely by outside investors because the insider has asymmetric information about the company's prospects.

Positive signal: an existing top-tier investor quietly leads an internal bridge round, buying more shares at the current price. This signals they see upside. Negative signal: at the Series B, the Series A lead — who has board-level information — declines to exercise their pro-rata right. This signals concern.

Illustrative example: a company needs to raise a $10M bridge. Its Series A lead, which has full financial visibility, invests $8M. Two new outside investors cover the remaining $2M. The Series A lead's participation signal is stronger than any amount of external due diligence an outside investor can do, because the insider knows the real numbers.

The gotcha: sophisticated insiders sometimes manage signals deliberately. A fund might participate minimally in a bridge to avoid sending a negative signal — not because they have conviction, but to protect their existing position's carrying value and avoid triggering a market re-mark. Pure signal-following can lead secondary buyers into positions where the signal was manufactured rather than genuine.