Partner @ThresholdVC, co-lead Stanford’s Threshold Venture Fellows. Board member Upside Foods, Tia. Mom, dog lover. Podcast: The Startup Solution.

Joined May 2012
67 Photos and videos
Heidi Roizen retweeted
Congrats to the Threshold Venture Fellows class of 2026 🥳
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Heidi Roizen retweeted
Thinking about the current pace of change got me thinking about the old days. I started in venture capital in April 2004. Top 10 companies, April 2004: Industrials, oil, pharma, banks.. and Microsoft/Intel. Combined market value: ~$2.4T. Top 10 today: NVIDIA, Alphabet, Apple, Microsoft, Amazon, TSMC, Broadcom, Meta, Tesla and Aramco. 9 of 10 are tech. Combined value: ~$27.9T. NVIDIA (~$4.9T) is ~15x the value of the 2004 number one. And double the value of the 2004 top 10, *combined*. The game keeps changing. Faster, bigger, better. The one constant: be long on technology. The next decade or two are going to be incredible.
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Heidi Roizen retweeted
Pretty fired up to be backing @MillionInt @_arohan_ @juliacvillagra and the rest of the elite crew at Core! An AI that builds for AI, from ground up! One of the most ambitious team that we've backed at @thresholdvc!
Today we're announcing Core Automation Our objective: systems that optimize and automate work, starting with research itself.
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Heidi Roizen retweeted
Today we're announcing Core Automation Our objective: systems that optimize and automate work, starting with research itself.
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Heidi Roizen retweeted
Apr 14
Very excited to share that @thresholdvc led @Bluefish_AI's $43M Series B alongside @NEA and an incredible group of strategic and existing investors. The future of brand discovery and evaluation runs through AI. Bluefish is building the full-stack agentic marketing platform for the enterprise. Congrats to the entire Bluefish team. Let's go!! 🐟
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Heidi Roizen retweeted
Mar 18
Excited to announce that we co-led a $16M Series A for @sequen_ai, the world's first behavior design engine for the enterprise. Sequen enables consumer companies to deliver real-time, in-session personalization by training on live user behavior and making sub-second ranking decisions - driving real revenue lifts. I'm so grateful that we at @thresholdvc get to partner with Zoe and the entire Sequen team as they build the foundational infrastructure for every consumer company that wants to compete in the AI era. techcrunch.com/2026/03/18/se…
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Heidi Roizen retweeted
Proud to share that @thresholdvc has invested in @adaptionlabs, which is announcing a $50M seed today. I couldn't be more excited to partner with @sarahookr and @sudip_r0y as they build (at lightning speed!) fundamentally different AI systems - models that are highly efficient and adapt in real time. Congrats to the entire Adaption Labs team on this milestone. Even more exciting things coming very soon - stay tuned! 🚀
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Heidi Roizen retweeted
We started @laborup_usa with a simple belief: America can’t rebuild its industrial base without rebuilding how we hire the people who power it. We raised $7.7M to build the defining AI solution that is Solving America's $1 Trillion Manufacturing Labor Crisis. I sat down with @dasha_shunina at @Forbes too share more. Link in comments⬇️ And to our investors, we're proud to be on this mission with you @nvpcap @torch @thresholdvc @westboundequity @rex_woodbury @heartland @JeffDean @evancharles @jeff_jordan @marketplaceshq @Wemimo11 and more folks not on twitter!
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I’ve noticed two common mistakes entrepreneurs make: one is thinking it’s all about them when it isn’t, and another is thinking it’s not about them when it actually is. Here’s why it’s so important for every entrepreneur to sort this out: threshold.vc/podcast/itrsquo…
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Does your VC ever behave in a way that makes you go “hmmm” – or worse? In this episode I unpack the inner workings of venture capital to explain what may seem like unexplainable behavior: threshold.vc/podcast/inside-…
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For anyone who wants to ask me a question, try this: The Ask Heidi AI has been trained on all Startup Solution podcast episodes, plus blog posts, speeches, and online interviews. Try it out and let me know what you think! heidi-ai.replit.app/

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Heidi Roizen retweeted
2 Apr 2025
Fantastic master class in GTM tonight by our friend and longtime operator Karen White, now Executive Partner @8vc, organized by my partner @HeidiRoizen at our new @thresholdvc downtown PA office.
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As an entrepreneur, you constantly need to reach out to people you don’t know. If you struggle with that, try these tips: threshold.vc/podcast/the-art…
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Today on the Startup Solution I'm demystifying those earnouts -- how they work, what to include in yours if you negotiate one, and how often they actually pay out (spoiler alert, much less than you’d like to believe) threshold.vc/podcast/the-cas…
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Heidi Roizen retweeted
12 Feb 2025
Exciting news! We led Suger's $15M Series A. I'm thrilled to partner with Jon, Chengjun, and the entire Suger team as they build the AI-powered platform, end-to-end platform for cloud marketplaces. We at @thresholdvc are grateful to join the journey alongside our friends at @intelcapital, @craft_ventures, and @ycombinator 🎉 Let's go!!
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