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Over the past two years the discussion of the “Series A” crunch has reached fever pitch, with an emphasis on the mounting investor expectations around raising this round. We have also seen some truly massive series A rounds so far this year. So I was curious, how has a Series A for Y Combinator companies – those who are considered by Valley insiders to fetch some of the highest premiums – faring over time? I collected information on the 92 YC companies to have raised a Series A in their life, and here is what I found.
To put this in perspective, I also pull the industry averages for all Series A and Series B rounds during the same period of time:
Change In Round Size, Regardless of Time Elapsed
For another perspective, I also thought it would be interesting to remove the time aspect and simply look at these Series A rounds as a progression of deals, regardless of when they took place. This graph looks at the 10 deal running average of Series A round size. You could think of this as potentially answering the question “did YC get better at helping founders raise larger rounds at higher valuations as they did more deals, regardless of time elapsed?”
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Observing that a company has made a sudden jump from 10 to 20 employees, or a steady climb from 5 to 50 over the course of a year, can signal an increase in revenue or traction or even an un-announced funding round. Sophisticated investors can even combine employee count trends with funding data to back into an estimate of the company’s revenue or val. But where can you find historical data on company size?
Introducing 6 month employee trends
Today we’re excited to introduce historical employee numbers for over 68,000 companies. Use Mattermark to find companies that are growing their teams the most quickly, as both a rate and an absolute number.
When used in conjunction with our investor, industry and keyword filters, you can quickly find exactly the companies you are looking for, such as the fastest growing Y Combinator SaaS companies that still have fewer than 50 employees.
To add columns for historical employee data to your Mattermark, simply select the “Columns” filter from the All Companies page and then select the employee columns.
And then select the columns you want to include:
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Today startup incubator Y Combinator posted stats about their portfolio, which now spans 716 companies (including 85 in the current batch) who have raised more than $3 Billion in collective funding. At the end of the post YC President Sam Altman noted:
…we don’t keep statistics on total revenue or jobs created, though I expect both numbers would be impressive.
While YC doesn’t track these things, we do. I’ve taken a look at the data we have on YC companies and here’s what I found:
- 267 companies currently have 2 or more employees
- 8,164 people are currently employed by a YC company 
- 121 companies have disclosed an exit (no IPOs, all acquisitions so far)
- 66% of YC companies are based in the Bay Area, followed by New York (7%) and Boston (2%)
- 76 un-exited companies have raised a venture round of funding (Series A or beyond)
- There is a nearly 50/50 split between B2B and B2C startups in the portfolio
- The average Series A stage YC company has 26 employees and has raised $10.2M of funding in its lifetime (median is $7.3M)
Interested in learning more? Login to Mattermark and check out Y Combinator’s portfolio growth, metrics, breakdown, and signals in greater detail.
 The total number is probably much higher, many of these companies do not have LinkedIn pages or employees on LinkedIn, Crunchbase, news, and other sources until they are further along. I think an estimate of 9,000 to 10,000 current jobs created by current YC companies is reasonable.