The GTMnow Newsletter (by GTMfund)
The GTMnow Podcast
What Founders Need to Know for 2026
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What Founders Need to Know for 2026

How top seed investors think about conviction, omissions, and building real edge at the earliest stage.

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Brought to you by: AngelList

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As we expanded from Fund I to Fund II, AngelList took care of the back-office operations, allowing us to stay focused on what matters most: investing in world-class founders and building the strongest go-to-market network in venture.

They’ve scaled with us across funds and into the future.

If your fund is growing in size or complexity, check them out at www.angellist.com/gtmfund.


Who we sat down with

Mark Goldberg is a Managing Partner and Co-Founder at Chemistry, a new early-stage venture firm with a $350M debut fund backing standout software companies from Seed to Series A. Prior to Chemistry, Mark was a Partner at Index Ventures, where he led early-stage investments across software and fintech for nearly a decade. Before Index, Mark was one of the first business hires at Dropbox, helping the company navigate hypergrowth.


Discussed in this episode

  • Why Mark studied international relations, and why venture feels like “the liberal arts of jobs”

  • Index’s US “invisibility” era and what that taught him about building a new firm

  • The Chemistry spinout thesis: “take great multi-stage DNA, reconstitute it with focus”

  • Fund design: pre-seed → seed → A, light reserves, and concentrated doubling-down

  • Hiring strategy: network access > spreadsheet diligence

  • Culture principles: excellence, performance, “no one takes themselves too seriously”

  • Conviction-based investing vs consensus IC, and why omissions are the real killer

  • The hardest lesson in venture: managing co-founder dynamics (and when to just listen)


Episode Highlights

00:00 — “A+ people want to work with A+ people.”

01:46 — GTMfund’s 2026 prediction: big players come roaring back (Google, Meta, Microsoft, Uber/Waymo).

14:51 — GTMfund platform metrics: thousands of support items, intros, hires, and fundraising connects.

26:29 — Why Mark left Index to build Chemistry: big-fund lessons, rebuilt with focus.

33:39 — Chemistry’s strategy: early-stage focus, light reserves, and building for “product-market discovery.”

44:05 — “Venture doesn’t scale well.” Why Chemistry stays small to avoid bureaucracy.

49:59 — Events that actually work: chess tournaments, surfing, and hobby-driven gathering > happy hours.

54:56 — Investment process: conviction, not consensus—optimize for outliers, not averages.

1:10:32 — Hardest lesson in venture: co-founder dynamics, and learning when to listen (not “advise”).


View the Full Transcript


Key takeaways

1. Focus becomes your unfair advantage.
Chemistry’s bet is that a tightly scoped stage (inception → Series A) creates sharper instincts and faster execution. You don’t win by “covering the map,” you win by being the best partner in one specific chapter.

2. Your biggest loss won’t be the deal that went to zero.
Mark’s framing is brutal and true: the career-defining pain is the omission. So the whole system needs to reduce “missed outliers,” not optimize for safe averages.

3. Conviction scales better than consensus at seed.
Early-stage outcomes are driven by weirdness and edge cases, not committee-approved comfort. A conviction model keeps the fund open to non-obvious bets that look wrong (until they don’t).

4. Reserves are a strategy, not a default.
A light reserve model forces real decisions: pick the few you’d aggressively back, not a little bit of everything. It’s harder emotionally, but cleaner mathematically.

5. Brand gets you in the room; hustle keeps you there.
Index’s early US years trained Mark for the “prove it every day” reality of a new firm. The carry is earned through volume of reps: meetings, events, and fast follow-through.

6. “Access hires” beat “analysis hires” early.
Chemistry intentionally hired people who expand the network surface area, especially among younger, emerging founder pockets. In seed, the best insight is often just being earlier.

7. Culture is performance, not perks.
Dropbox taught Mark that A+ people stick around to work with A+ people, and winning becomes the glue. Everything else is decoration.

8. Management is often just noise reduction.
The “umbrella” model is simple: protect the team from distractions so they can do the core job. If you’re micromanaging, you hired wrong.

9. AI is now table stakes, so differentiation must be real.
If every deck says “AI company,” then the job becomes isolating what’s fundamental vs what’s marketing. “AI whitewashing” raises the bar for clarity.

10. The most valuable help is sometimes silence.
Founders don’t always want advice; they want an intelligent witness. Knowing when to listen (especially in co-founder tension) is one of the highest-leverage investor skills.


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The GTMnow Podcast tells the stories of how the top 1% of operators, founders and investors build, scale and invest.

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GTMnow is the media brand of GTMfund - we are an early-stage venture fund made up of 350+ go-to-market executives from the fastest-growing companies.

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