On the Y Combinator Summer 2021 batch

On the Y Combinator Summer 2021 batch

At Rebel Fund, our task is to buy the leading 3– 4%start-ups in each brand-new Y Combinator (YC) batch. To achieve this, we develop what our company believe to be the most thorough database that exists of YC start-ups– consisting of over 60,000 information points on ~400 start-ups in simply the current YC Summertime 2021 (S21) batch. This database supplies deep insights into the batch and assists us absolutely no in on the most appealing groups and concepts to purchase.

I have actually composed prior to a bout our proprietary Rebel Theorem device discovering algorithm that evaluates these 10s of countless datapoints to score and rank each YC business in each batch according to its possibility of attaining a fantastic result for early financiers. The objective of this post is to share some stats and insights on the YC S21 batch that we feel comfy publishing.


So where are these YC start-ups found?

Although YC is based in Silicon Valley, it draws in start-ups from all around the world. While a small bulk come from The United States and Canada, there is a substantial worldwide contingency in YC batches nowadays, consisting of start-ups from Europe, Asia, Latin America, and Africa.

When it pertains to global start-ups, YC has a strong leaning towards emerging markets, which ends up being clear when we break down the start-ups by sub-location. The Asian start-ups are mainly from southern and southeast Asia (e.g., India, Indonesia, and the Phillippines) and Latin America and Africa are mainly emerging markets.

Provided the increase of globalization and remote/distributed business, it is necessary to disaggregate the place of a start-up from the market that they serve. When we break down the start-ups by market area, we see a fascinating pattern: Established market start-ups in Europe and The United States and Canada tend to serve the United States/ World markets, whereas the emerging market start-ups tend to focus in your area. Anecdotally, we have actually seen much of these emerging market start-ups are taking service designs that have actually currently been shown in the industrialized world, and localizing them to their particular area.


The break down of YC start-ups by market constantly interests me, because YC sits at the bleeding edge of development so serves as a terrific prominent sign of where the innovation world is heading.

My popular On $300 B of Y Combinator Start-up Success post speaks with how YC start-ups have actually been moving towards B2B, Fintech, and other “old economy” sectors ripe for disturbance like Health care & Industrials, and this newest batch is no exception.

Given that the market classifications above are rather broad, we have actually broken down the start-ups even more by sub-industry. This reveals simply how varied YC start-ups are, and causes a couple of fascinating observations:

  • Engineering, Item and Style is the single biggest classification, which demonstrates how typical YC start-ups establishing tools for other start-ups are
  • Market is the 2nd biggest classification, most likely due to the strong network results and defensibility in this classification
  • In spite of all the crypto enjoyment nowadays, Cryptocurrency start-ups just represented 1%of the S21 batch

The last point might be unexpected to numerous, specifically with the mega-successful Coinbase being a YC business. I believe it is because of a lower supply of crypto candidates to the program given that they currently have sufficient access to capital, plus YC’s historical hostility to investing into sectors that feel overhyped. That stated, a great deal of crypto applications (NTFs, DeFi, trading, and so on) are reaching an emergency of adoption today that I believe might alter this vibrant in the future.


There is a typical misunderstanding that startups requirement great deals of history and earnings traction to get accepted into YC. This isn’t real– the large bulk of S21 start-ups are 2 years of ages or less, and a number of those pre-revenue. While there are likewise some start-ups in the batch in the 3 to 5 years of age variety, they’re seldom older.

Creators Education & Work Experience

At Rebel, the majority of the information we gather on YC start-ups is associated with the creators themselves. Every financial investment we make is eventually a “group bet” so we track the work history, academic history, and prior successes of every YC creator in careful information. Here I’ll share some insights on the batch as an entire, beginning with creators’ instructional background.

YC creators are a well-read lot, and 54%of S21 batch start-ups have at least one creator with a postgraduate degree. The most typical degree type is a Masters (non-MBA) in a technical field, showing YC’s long-held predisposition towards technical starting groups. Next are MBAs, followed by PhDs– which are likewise generally in technical fields. There are a couple of MDs in the batch too, typically constructing something in health or biotech.

Next we’ll take a look at the number of years of overall work experience S21 creators have.

Regardless of the stereotype of Silicon Valley creators being a lot of young college-dropout wonderkids, the frustrating bulk of YC creators today have 5–12 years of work experience, with a mean of 9 years experience. A little however considerable subgroup have 20 years of experience or more.

So how old are these creators? We do not understand precisely, however approximate each creator’s age by including 18 to the number of years ago they began their very first university degree program.

When we do so, it’s clear that YC creators cover a big age variety, with teens all the method to 60 years of age in the batch. The large bulk of YC creators fall into the 24–34 year old age variety with a typical age of 30 years– most likely a bit older than numerous would anticipate– however constant with the mean 9 years of work experience above.

When we established our Rebel Theorem machine-learning algorithm to anticipate YC start-up results, we discovered that the single biggest success predictor is whether the creators had an effective start-up in the past. YC needs to understand this also, as they have a clear predisposition towards repeat creators, while likewise still scheduling lots of areas for first-timers.

As you can see in the chart listed below, there were over 270 creators in the S21 batch who had actually begun 2 or more business in the past, representing near half the creators that we tracked! Keep in mind the “1” classification in some cases shows their YC start-up and often a previous start-up, depending on when we collected the information, so numerous of them are repeat creators.

If we take a look at the creators’ cumulative years of work experience structure business as cofounders, we can see that the majority of them have a number of years under their belt, and a good sized minority have 10 years of cofounder experience or more.

Couple of recognize simply how fully grown most YC creators are today. It’s safe to state the “common” W21 creator is a 30 years of age knowledgeable repeat business owner with years of experience refining his/her abilities.

Creators Top School and Employers

Silicon Valley has actually long shown a predisposition towards “pedigreed” creators, and with excellent factor– there’s information to recommend that creators that finished from specific leading universities and/or operated at specific leading companies are much more most likely to have effective start-ups than their peers.

In the great book Super Creators by Ali Tamaseb, the author examines 30,000 information points on numerous start-ups to check out the very best predictors of billion-dollar results. Among other things, he discovered that finishing from particular universities and operating at particular companies is undoubtedly predictive of a creators’s start-up success. When we established our exclusive Rebel Theorem algorithm, we found the exact same.

Given That Mr. Tamaseb has actually released his findings however the inner operations of Rebel Theorem stay private, here we have actually examined the S21 batch start-ups according to his leading school and company rankings (though ours aren’t too different). As you’ll see in the charts listed below, YC might have separately reached comparable rankings.

The leading universities participated in by S21 creators line up extremely well with those Mr. Tamaseb discovered to be most predictive, with Stanford, Harvard, MIT, and UC-Berkeley leading the charge. If you deal with the Super Creators rankings as a standard, you can even see where YC presents its own predispositions, with West Coast schools a bit preferred over East Coast, and with IIT in India being disproportionately represented (I think due to YC’s efforts to hire creators in India)

When we compare the breakdown of S21 creators’ previous companies to Mr. Tamaseb’s leading rankings, we can see that YC still shows comparable tastes, though not rather as comparable as with leading universities. Both have a strong predisposition towards ex-Googlers, however YC’s # 2 is Tamaseb’s # 5 (Microsoft) and YC’s # 3 is Tamaseb’s # 6 (Facebook). We can likewise see that YC stands in plain dispute with Tamaseb on Yahoo! and HP alum, however that might just be because of Tamaseb sweating off an older information set.

In any occasion, our leading university and company findings recommend that YC is choosing creators extremely regularly with how information science recommends it must– whether by means of YC’s own algorithm or carefully tuned YC partner impulses.

The charts above show simply a few of the lots of information points that Rebel gathers and evaluates on every YC start-up in the batch to assist notify our financial investment choices. We hope you have actually taken pleasure in nerding out on YC start-up and creator information as much as we do!

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