Invest in Y Combinator Alumni Series A rounds
Gain access to Series A rounds from Y Combinator graduates, opportunities typically reserved exclusively for top-tier US venture funds. Starting from €500 per deal.



Investing involves risks, including loss of capital, liquidity, and market. All investments also involve fees. Past performance is not indicative of future results and should not be the sole factor in an investment decision. Blast is neither affiliated with nor an official partner of Y Combinator.
Learn more about this startup profile
Invest in high-growth future leaders from Y Combinator batches, already backed by Blast. These companies enter their next phase of maturity.
Curate your portfolio deal-by-deal.
Access the world’s most prestigious accelerator
Founded in 2005 in San Francisco, Y Combinator has backed over 5,000 startups, minting more than 100 unicorns. It is the gold standard for scouting tomorrow’s tech leaders.
- 4 seasonal batches per year
- An intensive 3-month acceleration program
- Mentorship from elite tech alumni (OpenAI, Apple, Meta, Google...)
Past performance is not indicative of future results
The second round of funding, occurring after the seed stage. It aims to optimize the product and accelerate commercial growth.
Private startup (not publicly traded), with a valuation exceeding 1 billion dollars.
Private startup (not publicly traded), with a valuation exceeding 10 billion dollars.
Founded in 2005 in San Francisco, at the heart of Silicon Valley, Y Combinator has propelled over 5,000 startups, including more than 100 unicorns.
Today, Y Combinator is the absolute benchmark for identifying future tech leaders.
- 4 batches per year, one per season
- An intensive 3-month support program
- Advice and expertise from former unicorn founders (OpenAI, Apple, Meta, Google...)
Unparalleled access, powered by our early Seed-stage entry
Typically restricted to major US venture funds, Y Combinator Series A rounds are accessible through Blast from just €500, thanks to our early equity positions secured at the Seed stage.
Sourcing
As Seed-stage investors right from the YC batch, we get an inside track to identify high-potential Series A rounds, securing allocations alongside top-tier US funds.
Selection
Backed by data from +100 YC seed startups funded, monthly reporting and our proprietary detection tools, we pinpoint the top outperformers based on growth, unit economics, and founder pedigree.
Structuring
We set up a dedicated Special Purpose Vehicle (SPV) for each deal, giving our investors the freedom to pick and choose individual assets within a tailored legal framework.
Access tomorrow's potential unicorns
When investing in YC Series A rounds, you have a greater than 1-in-10 chance of backing a future unicorn ($1B+ value).
That is a hit rate 10x higher than the global VC market average.






Gross multiples, pre-dilution. A Series A investor, being diluted by 15 to 25% per round, over 5-8 rounds, can see their initial stake reduced by 60 to 80%. The actual net multiple is approximately 3 to 6 times lower than the gross multiple.
Gross multiples, pre-dilution. A Series A investor, being diluted by 15 to 25% per round, over 5-8 rounds, can see their initial stake reduced by 60 to 80%. The actual net multiple is approximately 3 to 6 times lower than the gross multiple.
Investing involves risks, including loss of capital, liquidity, and market. All investments also involve fees. Past performance is not indicative of future results and should not be the sole factor in an investment decision. Blast is neither affiliated with nor an official partner of Y Combinator.
Our first Series A
Explore startups recently funded by the Blast community.
High-potential ventures, vetted by our experts and backed by hundreds of members.
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Frequently Asked Questions
Yes. Anthony Bourbon personally invests in every startup offered to members. This "skin in the game" principle guarantees an alignment of interests: he only recommends projects he believes in enough to commit his own capital to.
As with any venture capital investment, the primary risk is the total loss of the capital invested. Blast Club does not guarantee any returns. It is recommended to only invest funds that can be tied up long-term and to diversify across multiple startups to reduce overall risk.
The minimum amount to invest in a startup via Blast Club is generally €500, which makes startup investment more accessible.
While YC Seed Selection targets nascent (Seed) companies, Y Combinator Series A focuses on startups from the YC ecosystem that have already validated their model. These companies raise growth funding (Series A) to accelerate their commercial rollout. The risk is lower than at the seed stage.
For a YC Series A investment, a structuring fee of 3-5% is charged, depending on your membership level. This fee may be reduced based on your eligibility for the loyalty program and the terms applicable to the transaction. Additionally, a 10% investment fee is charged by Blast. to the investment vehicle, equivalent to 2% per year over 5 years, billed in the first year. In the event of a gain realized by the investor following a divestment, a capital gains fee equivalent to 20% of the realized gain is applied, aligning the interests of Blast. and investors upon exit and rewarding the transaction's performance.

