IanRountree Profile Banner
ian Profile
ian

@IanRountree

Followers
12K
Following
38K
Media
1K
Statuses
17K

I believe individuals can change the world and started @cantos to enable them.

San Francisco, CA
Joined March 2009
Don't wanna be here? Send us removal request.
@IanRountree
ian
16 days
We invest in 2 archetypes at @cantos: 1. Full-stack deep tech selling an end product or even commodity, _not_ tech. 2. Weird n-of-1 never seen anything like it before. Selling tech to incumbents... PASS Commercializing science... PASS Nth co doing the current thing... PASS
34
5
162
@IanRountree
ian
15 hours
Meet the man who fish-pilled @grant__gregory and me and thereby played a key role in Grant joining @cantos...
@ti_morse
Ti Morse
16 hours
My first interview with Saif Khawaja @khawajasn, Cofounder & CEO at Shinkei @ShinkeiSystems. Shinkei is building fish harvesting robots with the goal of reshoring America's seafood supply chain while radically improving the quality & shelf life of the fish we consume. Their
1
3
26
@IanRountree
ian
15 hours
Narrative violation: One of our favorite portco CEOs is 72
@DavidZagaynov
David Zagaynov
2 days
Imagine being a millennial running a startup
2
1
66
@UnitedSAmerican
Unite4Freedom
1 hour
From sea to plains, from peaks to shore, The ghosts of elections knock once more. In ballots and rolls their shadows crawl, We’re boldly asking—who counted them all? In Palm Beach they trick, in Cali they scheme, In Colorado’s heights, they haunt the dream. Ohio’s ghosts
3
8
20
@IanRountree
ian
20 hours
*I'm being sarcastic it's great* 😬
0
0
3
@IanRountree
ian
20 hours
When a company you don't own enough of raises another big round
4
0
53
@IanRountree
ian
20 hours
Just cackled in a coffee shop
@anothercohen
Alex Cohen
1 day
"Good morning human. Your sleep score last night was only a 73. You should take it easy today."
0
0
13
@PatriotFoods
Patriot Foods
2 days
Support your American Farmers and Veterans and SHOP NOW
3
8
51
@IanRountree
ian
1 day
Credit to @ameekapadia for spotting mold awareness before the kink in the curve.
@m0ldilocks
Ariana Thacker
2 days
Mold remediation: more searches, more awareness, and more action.
2
0
17
@IanRountree
ian
2 days
Update: I got a phony groni and an app. I think I passed because he asked to invest.
0
0
1
@IanRountree
ian
3 days
Quick I need help… I have a 4pm LP meeting at a fancy place in Meatpacking, What do I order?? It’s too late for coffee but too early for drinks(?) and I’m not hungry. The Californian mind cannot comprehend!
19
0
15
@IanRountree
ian
3 days
The single best thing you can do early in your career is pick your mentors wisely.
1
2
30
@IanRountree
ian
3 days
The more vc consolidates into fewer companies / funds the more valuable independent conviction becomes, especially at later stages since that’s where consolidation really takes over. It’s easy to be “non-consensus” at Seed; there is no consensus. Doing it at A/B/C is rare.
@arian_ghashghai
arian ghashghai
4 days
Venture $$ deployed are up, but # of deals are decreasing since Q1 2024: - The "it's easier to raise than find a job" myth is empirically wrong. - More consensus VC capital - Thus, it's only "easy" to raise the closer your startup is to consensus Not good for VC/startups imo
7
4
57
@IanRountree
ian
3 days
REAL. This drives me freakin’ nuts.
@heyricharnold
Rich 🤌
4 days
Sir, please…the name of the street. I can’t zoom in anymore…
0
0
13
@IanRountree
ian
4 days
“Money flows as a function of stories.” -Don Valentine
4
11
52
@IanRountree
ian
5 days
Why we backed Bedrock Energy. Unlocking geothermal heating & cooling for commercial buildings.
bedrockenergy.com
@a16z
a16z
7 days
HVAC has beaten out semiconductors, computers/servers, and data centers as the biggest winner of net-new hardware spending since 2022.
0
1
13
@IanRountree
ian
6 days
Our best investments were: 1. Normally priced pre-seed ➡️ expensive seed 2. Normal seed ➡️ “cheap” A & B 3. Very expensive Series A 4. Normal PS ➡️ pricey seed 5. Normal seed ➡️ normal A 6. Normal PS ➡️ normal seed 7. Cheap PS ➡️ normal seed 8. Normal Seed ➡️ cheap A
@jmj
Jeff Morris Jr.
7 days
I was at the LP conference this week, and one of the most common questions I got was whether you as a seed fund manager should be investing in some of the hotter, more expensive seed rounds. This is an incredibly challenging question to answer because venture is a game of
7
4
89
@IanRountree
ian
7 days
And the follow-up, which is unfortunately a lot harder: How do you express that belief in an investment? 🤔
1
0
0
@IanRountree
ian
7 days
What's your highest confidence belief about the future? Mine is that a much higher % of cars will be electric. (It's 8% today.)
15
1
24
@CJHandmer
Casey Handmer
8 days
Golden Dome will neutralize ICBMs. Only way to deliver nukes will be slowly via subs. A better world, I think.
@ApexSpacecraft
Apex 🛰
9 days
Today, we unveil Project Shadow — Apex's on-orbit Space-Based Interceptor (SBI) technology demonstration, launching NET June 2026. At Apex, we often launch self-funded missions to advance our technology and demonstrate our capabilities in space. Over 1.5 years ago, we launched
57
25
560
@IanRountree
ian
8 days
Should’ve seen this coming tbh but didn’t have it on my 2025 bingo card. (Disclosure: @cantos was a pre-seed investor in Atom.)
@firstadopter
tae kim
8 days
omg "Trump Administration in Talks to Take Equity Stakes in Quantum-Computing Firms" "Companies including IonQ, Rigetti Computing and D-Wave Quantum are discussing the government becoming a shareholder as part of agreements to get funding earmarked for promising technology
0
0
8
@IanRountree
ian
8 days
Just occurred to me… we need a BookFace for GPs.
2
1
18
@IanRountree
ian
9 days
Once we've closed our new fund (soon 🫢) I want to do a webinar with other GPs to share lessons learned and share notes on a list of 300+ LPs. Who's interested?
Tweet card summary image
docs.google.com
Upcoming GP-only webinar on the state of raising a venture fund, esp. in hard-tech. Ian to share lessons learned and go over a list of 300+ LPs.
26
4
184