Bullpen.News From Edwin Dorsey
Get Daily Recap Feedback

Friday, October 9, 2026

Back to today

From X

@convequity

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.
@convequity

Convequity on X

Huawei's finer bonding deserves more weight in the AI-chip race. $AVGO's 3.5D approach combines vertically stacked dies with the side-by-side packaging used to connect processors and HBM. It adds another direction in which designers can shorten the wires moving data around a chip. Besi describes Broadcom's initial face-to-face hybrid bonding at 6µm pitch. Huawei reports 1.5µm for its 2026 Kirin implementation. Pitch is the spacing between connections; face-to-face brings the dies' wiring surfaces together. On an identical square grid, that spacing difference allows 16x as many potential bond sites per unit area. Usable connections still depend on routing and the space reserved for power and repair. It is an architectural opportunity, not a bandwidth multiple. The size qualification matters. Kurnal's Kirin 9050 die shots measure roughly 121mm² per die. Extending fine-pitch bonding to much larger AI dies changes the economics: more expensive silicon is at risk when a stack fails, and heat and power delivery have to work across the whole assembly. Broadcom also said face-to-face compute SoC shipments began in February 2026. A later roadmap cannot be read as its first arrival at face-to-face bonding. Huawei looks ahead on this published pitch comparison. Our view is that this gives it a credible route to narrowing parts of the AI-chip gap through packaging. The stronger claim needs production evidence at large accelerator scale. The phone result alone does not establish when that arrives. Builds on Convequity's Huawei After Sanctions, Parts 1–2, 10 & 18 Sep 2026, with updated source checks.

Investor Letters

All letters

TSOH Weekly Roundup (10/09/2026)

Paramount Skydance’s debt-heavy Warner Bros. Discovery acquisition, streaming bundle pricing and alcohol-industry diversification anchor…

WBD $78B
TSOH Investment Research

Boyz in the Hood

Robinhood’s AI agents, 24/7 equity trading and 10:1 crypto perpetual futures encourage higher retail trading velocity, leverage and…

HOOD $98B
WHAT ARE WE DOING? “Contrarians At The Gate”

Top Rebound Stocks for Oct’26

Intuitive Surgical, down 32% from its January 2025 peak, faces slower US procedure growth and new robotic-surgery rivals despite $10.1…

ISRG $147B
Rebound Capital 1 click

Vertiv Holdings Co. (VRT)

Vertiv's 33% stock decline followed a 2026 forecast increase, despite a $15 billion backlog and rising AI data-center demand for power and…

VRT $94B
SixSigmaCapital: Navigating the Financial Markets

Publications we follow

Every publication on this site, hand-picked.

109 publications

Newsletters 92

YouTube 4

Blogs 12

Seeking Alpha 45 of 216

Nominate a publication

X accounts we follow

Every account on this site, hand-picked.

74 accounts
Nominate an account

Investor letters we follow

189 firms

Sectors

Ordered by how often our editor reaches for them.