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Tuesday, October 13, 2026

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Convequity on X

$RBRK's backup engine breaks data into fixed-size blocks, for example 4 MB, and stores only the unique blocks across backups. Commvault and Cohesity instead divide data into variable-sized chunks, with the boundaries set by the content itself. Each design has a trade-off. With fixed blocks, a small change inside a block means the whole block gets written again, so Rubrik uses more storage. In return, hashing and comparing blocks is simple, which means faster backups and lower compute overhead. With variable chunks, only the changed portions are written, so storage use is much lower. Working out chunk boundaries and hashes as the data comes in takes more CPU and memory, which can slowdown backups. Cohesity offsets part of this with a scale-out architecture that processes in parallel across nodes. The two designs fit two different jobs. Variable-length deduplication suits long-term archives, where storage cost matters more than speed. Fixed-block deduplication suits recovery after a hack or ransomware attack, where fast restores and predictable performance matter more than saving storage. That matches how each company started. Rubrik came into the market in 2014 focused on security and on getting critical data back quickly after a breach. Cohesity started from a different idea. It built its own file system that spreads data across many servers, each with its own computing power. Backup copies stay readable like normal files, so companies could search and analyze them where they sit, without restoring them first. Security came second. The two are now moving closer together. Cohesity has leaned much more into security and recovery, especially after buying Veritas's backup business in 2024.
@aleabitoreddit 2 clicks

Serenity on X

$CCXI looks like it's going public Q4 2026. And my hope is that it sort of looks like $OKLO if they generate enough excitement. Watched the investor presentation the other day, just waiting for the public listing anytime soon (I personally added some the other day). Big fan of humanoids, pretty confident physical AI shift is coming next. I'm personally not looking too much about the price action while it's in its filing phase, fun usually begins after ticker change. We'll see what happens

Investor Letters

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Vicor Update, Part Two

Vicor uses ITC exclusion-order cases to license power-module patents, with published royalty multipliers rising from 1.0x before filing to…

VICR $10B
CV's Substack 4 clicks

Expert Call | Nebius

Nebius’s 1 GW annual active-capacity target from 2027 is realistic, according to a former product manager, with greenfield data centers…

NBIS $56B
P Equity Research 4 clicks
PTRN · short

Pattern Group INC

Pattern Group is a fragile consumer business targeted on the short side.

PTRN $3B
Value Investors Club 3 clicks

“Is Ralph Lauren Still Relevant?”

Ralph Lauren’s 2017 CEO change put Patrice Louvet in charge of reversing nine quarters of same-store sales declines and restoring the…

RL $22B
TSOH Investment Research 1 click

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