Congratulations to Rosarium Health! + Podcast Announcement


Hi Reader,

One of our portfolio companies, Rosarium Health, just closed a $6M seed round — less than 12 months after we led their previous round. And this week, we broke down exactly why we wrote that first check on our new podcast.

Cameron Carter and the team at Rosarium Health are building the infrastructure to make the home a reliable site of care — coordinating assessments, home modifications, and reimbursement through a single platform, across 34 states, for a population that healthcare has chronically underserved.

When we first backed Cameron, Rosarium was post-product but pre-PMF — exactly the stage where we believe we do our best work. We stepped up to lead that round because we saw what the traction could become. This week's news is proof it did: a $6M seed, new Medicare Advantage and Medicaid partnerships, and 1.2 million lives covered across California and the Northeast. We couldn't be more excited for Cameron and the entire team at Rosarium.

In this episode, we get into what we saw in the founder, what we saw in the market, and what it looks like to back a company before the story is obvious to everyone else.

Listen to the latest episode

That episode is also a good window into why we started Check Writers Room in the first place.

Symphonic was built on a simple premise: capital alone doesn't build ecosystems. Conversations do. Relationships do. Transparency about how this industry actually works does. We spend most of our days investing in early-stage founders, and the through line of almost every one of those conversations is the same — nobody tells you how this actually works.

That's the gap this show is trying to close.

Check Writers Room is a podcast from the teams at Visible Hands, Symphonic Capital, and 100km Ventures — where venture capital GPs talk shop honestly, specifically, and without the press-release version. We cover the craft of early-stage investing, what ecosystem building looks like in practice, and what GPs are actually wrestling with behind the scenes.

It's the show we wish had existed when we were getting started. A month in, the response has told us we weren't the only ones hungry for it.

And if it resonates, share it. The more voices in the room, the better the room gets.

Appreciate you always — thanks for being in this corner with us.

Best,

Sydney and Shruti

General Partners

Symphonic Capital

125 S Hwy 101, Solana Beach, CA 92075
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