How VCs Source Deals: The Real Channels Behind Every 'We Met Through a Mutual Friend'

Every fund has a "deal flow" problem. They need to see enough quality companies to find the few they'll back. The good ones are remarkably systematic about how they generate that flow — and the system has shifted substantially in the last five years.

This article walks through where investors actually find companies, ranked by how often each channel produces real investments.

The big six channels

In rough order of conversion:

1. Warm intros from trusted founders or operators — the highest-converting channel.
2. Repeat founders and operators they've previously backed — almost-guaranteed first meetings.
3. Scout networks and adjacent funds — strong cross-firm flow.
4. Conferences, demo days, and curated events — lower hit rate but big volume.
5. Inbound from public surfaces (websites, marketplaces, social) — low hit rate, growing fast.
6. Cold outreach by associates and analysts — high volume, modest conversion.

Plus an increasingly important seventh: investor agents browsing public marketplaces and aggregators autonomously.

1. Warm intros from trusted founders

The best deals usually come from a founder the partner has previously backed. The model is straightforward: the partner builds genuine relationships with their portfolio CEOs, those CEOs encounter promising founders in their orbit, and they pass those founders to the partner with a recommendation.

This channel produces the highest conversion rate by an order of magnitude. A warm intro from a respected portfolio founder typically turns into a first meeting 70–90% of the time, and the meeting closes more often than other channels.

For founders, this is why the answer to "how do I get into [Top Fund]?" is usually: meet a founder they've already backed.

2. Repeat founders

If a partner has backed a founder before — even a failed company — they'll almost certainly take a meeting on the next venture. Repeat founders skip the entire screening process.

This is one reason "earned access" matters. The founder who shipped a previous company and built the trust of a partner gets to start their next round with that trust intact. First-time founders don't have this advantage; the next-best thing is to act like a repeat founder — disciplined, prepared, transparent — even on your first round.

3. Scout networks and co-investor flow

Most major funds run scout programs (Sequoia Scouts, Lightspeed Scouts, First Round, etc.). Scouts are operators or founders given a small cheque-book to write tiny investments on the firm's behalf. The scout cheque is partly capital, partly an early signal that allows the fund to "see" companies before they show up in formal pitch processes.

Co-investor flow works similarly: a fund that previously co-invested with another fund will often share early-stage opportunities with them, hoping for reciprocity later.

For founders, this channel matters because: if you raise a small cheque from a scout or a notable angel, that single relationship can produce inbound to the fund within months.

4. Conferences, demo days, and curated events

YC Demo Day, Slush, Web Summit, sector-specific conferences, accelerator demo days — these are bulk sourcing events. Funds send associates and partners; they take dozens of brief meetings; they follow up with the few that interest them.

Conversion is lower than warm intros but the volume is real. For founders, conferences are good for two things:

• Generating warm intros (often the operator-investor mix at conferences becomes your future warm-intro source).
• Putting yourself in front of associates who can champion you internally.

Conferences are not good for closing rounds. Don't try to close in a hallway; aim to seed a relationship that closes later.

5. Inbound from public surfaces

A founder's public surface — website, LinkedIn, GitHub, Twitter/X, demo videos, marketplace listings — generates passive inbound. The amount varies wildly:

• A founder shipping interesting product news weekly attracts inbound.
• A clean website with clear demo videos converts cold visits into emails.
• A public GitHub repo with traction (stars, contributions) attracts technically-minded VCs.
• A listing on marketplaces like Hiveround is increasingly a real channel.

The cost of optimising your public surface is low and the option value is high.

6. Cold outreach by associates

Most major funds have associates who proactively cold-email founders that match the firm's thesis. Their hit rate is modest, but their volume is high — they're generating thousands of touches a year.

For founders, an associate cold email is a positive signal but not an offer. Treat it as: "this firm has noticed you and would like a screening call". You should respond, you should take the call, and you should remember that a closing meeting requires a partner — not the associate.

7. Investor agents (the new channel)

Increasingly, investors are running agents — autonomous software that scans marketplaces, public databases, GitHub, Twitter, and other sources for companies matching the firm's thesis. The agent surfaces candidates, sometimes with an AI-generated one-page memo. A human partner takes it from there.

This channel is small today but growing fast. Marketplaces like Hiveround explicitly cater to it: investors point their agents at the MCP server, and the agents do the discovery work.

For founders, the implication is: a clean public artefact (especially a pitch.md) gets you discovered without a warm intro. We dig into this in pitching to investor agents.

How partners allocate their time

Partners typically have:

• 40–60% of their time on portfolio companies.
• 30–40% on sourcing and early-stage relationships.
• 10–20% on internal firm activities (LP relationships, fundraising, internal politics).

In the sourcing time, the highest-leverage activity is maintaining relationships with their best-performing portfolio founders, who refer the next deal flow. Below that, partners tend to underinvest in cold sourcing — which is partly why the warm intro channel converts so well.

What this means for founders

Three takeaways.

Warm intros are not just polite — they're structurally privileged

Investors don't merely prefer warm intros; their entire pipeline is calibrated around them. The cold inbox is a fallback, not the front door. We have a guide on getting them: how to get a warm intro.

Public surfaces are now real channels

In 2026, you can be discovered without a warm intro. A clear website, a strong pitch.md, a well-positioned marketplace listing — these increasingly produce real inbound. The marginal hour invested here pays.

Build relationships before you raise

The fastest way to close a round in three weeks is to have spent the previous six months gradually building soft relationships with five or six relevant partners. By the time you "open the round", the diligence has been happening informally for months.

We unpack the long-game version in building investor relationships before you raise.

The investor sourcing system is more porous than founders assume — there are real ways in for first-time founders without a network. But the channels are uneven, and warm intros remain dominant. Plan accordingly.