30 Jun 2026
Signal Headquarters

Field Notes · 30 Jun 2026

Best explained

Nicholas Csicsko's framing: more than half of an institutional allocator's job is portfolio management (optimizing money-weighted vs. time-weighted returns) rather than manager sourcing.

By the numbers

IPO volume in the next few quarters is predicted to be 2x anything previously observed, potentially stress-testing public market capacity to absorb private-to-public exits.

New today — Evidence added

Smart tape costs around $2,000 for 100 sensors on a full car, providing 5 hours of data.

Jason Calacanis

Diamond cooling reduced GPU operating temperature by 70 degrees C in published tests.

Cleo Abram

New today — Sharp calls

Non-developers at OpenAI overwhelmingly preferred the Codex developer tool over the general-purpose tools built specifically for their personas.

Andrew Ambrosino

New today — Useful context

Nicholas Csicsko's framing: more than half of an institutional allocator's job is portfolio management (optimizing money-weighted vs. time-weighted returns) rather than manager sourcing.

Nicholas Csicsko

Agents cannot be deployed and forgotten like traditional enterprise software because the underlying LLM must be continually upgraded, making every version change a source of behavioral drift.

Gavriel Cohen

New today — Watchlist

Bloom Energy's manufacturing capacity will exceed 2 gigawatts by the end of 2026.

KR Sridhar

Tool watch

Bloom Energy is worth watching as a power provider for AI data centers. The company claims it can deploy power faster than data centers can be built and, even at tens of gigawatts of scale, would consume only single-digit percentages of the relevant supply chain.

Worth quoting

“You cannot sell Bitcoin. If you are selling Bitcoin, the whole system breaks.”
Michael Saylor
“For the first time in human history we are manufacturing intelligence.”
KR Sridhar
“You're spending a trillion dollars a year and the revenue on AI talk about maybe 70 80 billion.”
Rajiv Jain
“I personally favor a soft lean and done approach to Ethereum once the straw map is completed.”
Vitalik Buterin
“The implementation is actually not the expensive part anymore. It's dare I say taste.”
Andrew Ambrosino
“We believe it would be good for the world to have the option to slow or temporarily pause frontier AI development.”
Jason Calacanis