Heidi Roizen

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

[Lisa Xu @lisamxu]

Congrats to the Threshold Venture Fellows class of 2026 🥳

[Josh Stein @JoshSteinVC]

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.

[Arpit Mittal @i_arp1t]

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!

[Core Automation @CoreAutoAI]

Today we're announcing Core Automation

Our objective: systems that optimize and automate work, starting with research itself.

[Lisa Xu @lisamxu]

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!! 🐟

[Lisa Xu @lisamxu]

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.

https://t.co/mXvpjMpxlV

[Lisa Xu @lisamxu]

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! 🚀

[Josh Stein @JoshSteinVC]

We’re thrilled to have partnered with @SpellbookLegal, a company with a bold vision of reimagining how lawyers do their work by leveraging the power of AI.
https://t.co/qpYBp1BqKt

[Heidi Roizen @HeidiRoizen]

Empathy, Community, Impact: Heidi Roizen on the Threshold Venture Fellows Program https://t.co/lrOWGTuAvz

[Simba 🇺🇸 @simbajonga2]

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!

[Heidi Roizen @HeidiRoizen]

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: https://t.co/RfbXRQwC3q

[Josh Stein @JoshSteinVC]

Congratulations ⁦@CloudZeroInc⁩! 🔥
CloudZero raises $56M to help tame cloud costs https://t.co/CeCBb3ifcH

[Heidi Roizen @HeidiRoizen]

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: https://t.co/t67XFArQJK

[Heidi Roizen @HeidiRoizen]

Understanding your investor’s “zone of indifference” could be the key to getting your M&A deal over the finish line: https://t.co/6v6dZCAzri

[Heidi Roizen @HeidiRoizen]

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! https://t.co/CpruxbIIdh

[Mo Islam @moislamvc]

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.

[Heidi Roizen @HeidiRoizen]

As an entrepreneur, you constantly need to reach out to people you don’t know. If you struggle with that, try these tips: https://t.co/FysSY1D9VF

[Heidi Roizen @HeidiRoizen]

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) https://t.co/LiwGI0bkyp

[Lisa Xu @lisamxu]

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!!

[Heidi Roizen @HeidiRoizen]

Suger: Powering the Future of B2B Software Sales by @thresholdvc https://t.co/gwRlw7FyYl