[T2_t2]

AirBnB: $24 Billion. DropBox: $10 Billion. Zenefits: $4.5 Billion Stripe: $3.5 Billion. Instacart: $2 Billion Twitch: $1 Billion

Total: $45 Billion.

Source: http://graphics.wsj.com/billion-dollar-club/

So they value the rest of the portfolio at $20 billion. Does that seem reasonable?

[loumf]

I believe that they just added up acquisition amounts and the last funding rounds of each company. I don't believe that number represents what "they value" the portfolio at beyond that.