Calls through signals.

An investment newsletter where every call has a frozen receipt of where I stand on it: what I own, what I'm watching, what I passed on. Captured the moment I wrote it.

What it is

Editorial + evidence, in two places at once.

01
Briefs on Substack

Weekly notes on the positions in the portfolio — the thesis, what's changed, what's being watched.

02
Receipts here

Every brief publishes a permalinked receipt — what I own, what I'm watching, what I passed on — frozen at the exact moment I wrote it.

03
Verifiable, forever

Years later, every call is still checkable. No revisions, no quiet edits, no goalpost moves. The data doesn't move after the prose does.

Receipts, not predictions

Most newsletters tell you what they think.
This one shows you exactly where they stand.

The hard problem with calls-based content isn't the writing, it's the credibility. Anyone can write convincingly about a call they may or may not actually have made. Arsham closes that gap by freezing the receipt at publish time: position state if I own it, stance and price if I'm watching, an honest "considered and passed" if I looked and walked away. The brief is the prose. The receipt is the proof.

Latest receipt
ASML · ASML Q1 2026 thesis check
Published 29 April 2026
See receipt →

Read on Substack. Verify here.

Briefs land in your inbox. Each one links back to its receipt on this site.

Quick takes between briefs: @ArshamCalls on X ↗