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Mack Haymond

UCLA ’29 · CS + Math/Econ

I work in the middle office at Hartree Partners, mostly on P&L attribution. I also write software, usually tools I wanted for myself.

Projects

Sector-Relative Valuation
Python · Workers
Ridge regressions fit within each GICS sector to estimate a fair P/E for every Russell 1000 stock. Refreshed monthly.
Bruin Alpha Investment
Next.js · Sanity
The UCLA investment club I co-founded. I direct its trading committee and built the site, which officers edit in Sanity.
mack.link
Workers · D1 · React
I kept hitting free-tier caps on URL shorteners, so I wrote my own. One Cloudflare Worker and a D1 database.
macblock
Python · macOS
A Pi-hole that runs on your Mac instead of a separate box. Blocks ads in DNS and leaves VPN split DNS alone.
Awake
Swift · macOS
Menu bar app that shows what's keeping your Mac awake, down to which terminal or tool started each caffeinate.
resume-template
Typst
A one-page Typst resume that binary-searches its own spacing at compile time until the page is exactly full.