InvestorFounders Fund is a venture capital firm based in the United States, founded in 2005. It invests in technology companies across various sectors and stages.

Smart Infrastructure Ventures (SIVentures) is an early-stage B2B venture capital firm based in Leipzig, Germany, focusing on technology startups in sectors like AI, energy tech, and smart cities.
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Smart Infrastructure Ventures (SIVentures) is a venture capital firm founded in 2019 and based in Leipzig, Germany. The organization focuses on supporting technology founders from the early stages of their ventures. SIVentures invests in early-stage B2B software startups, providing initial investments of up to €500,000 and committing to participate in future funding rounds. The firm positions itself as a value-add partner, working closely with founders beyond just financial support. SIVentures is closely affiliated with SpinLab, the HHL Leipzig Graduate School of Management, which enhances its network and deal flow capabilities.
SIVentures invests in early-stage B2B software startups, focusing on sectors such as AI, IT infrastructure, energy tech, proptech, smart city, eHealth, cybersecurity, and enterprise software. The firm provides initial investments of up to €500,000 and is dedicated to participating in future funding rounds to support the growth of its portfolio companies.
SIVentures positions itself as a value-add partner, working closely with founders beyond financial support. The firm leverages its strong ties to the SpinLab accelerator to provide strategic guidance, access to a network of industry experts, and resources that help startups scale effectively.
SIVentures focuses on early-stage B2B technology startups, particularly in sectors such as AI, cybersecurity, energy tech, proptech, healthcare, and smart city solutions. The firm typically invests up to €500,000 in initial funding and is committed to participating in future funding rounds.
Startups can pitch to SIVentures through their website at smartinfrastructure.ventures or by emailing info@siventures.de. It is advisable to include a detailed business plan and financial projections in the pitch deck.
SIVentures positions itself as a value-add partner, providing not only financial support but also strategic guidance and access to a robust network through its affiliation with SpinLab. This enhances deal flow and offers portfolio companies additional resources for growth.
While SIVentures is based in Leipzig, Germany, it primarily focuses on the DACH region (Germany, Austria, Switzerland) and has expanded its investment activities to include startups in the United States.
SIVentures maintains an active role in its portfolio companies, providing ongoing support and guidance. The firm often collaborates with founders to help them navigate challenges and capitalize on growth opportunities.
SIVentures currently manages a fund size of €30 million, with plans for future funds to continue supporting early-stage technology startups.
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