Bullpen.News From Edwin Dorsey
Get Daily Recap Feedback

Monday, October 19, 2026

Back to today

From X

@convequity 3 clicks

Convequity on X

Inference repeatedly reads the same model weights, with far fewer writes than training. 1. In training, weights are constantly updated, so the memory sees heavy read and write traffic. 2. In inference, the dominant pattern is repeated reading of the same weights, and the key-value cache alongside them, with far fewer writes. That is the case for putting AI model weights on flash. Flash has traditionally been weaker than DRAM on write endurance and write speed. A read-heavy, write-light workload plays to its strengths and gets around exactly those weaknesses. Today AI chips sit beside HBM built from stacked DRAM, and it is the expensive part of the memory bill. High-Bandwidth Flash (HBF) is the product built on the read-heavy observation. It aims to deliver HBM-like read bandwidth at far higher capacity and lower cost by using NAND flash instead of DRAM. Two caveats. These are aims, not measured specifications. As of our early-August note, the first prototype from Sandisk ($SNDK), developed with SK Hynix, was expected later in the year. HBF is also more specialised than commodity NAND, where Chinese producers are expanding capacity aggressively.

Investor Letters

All letters

Semtech Analyst Day Review

Semtech raised Q3 guidance and targets $3.2 billion of fiscal 2030 revenue, excluding upside from its AI data-center optical and copper…

SMTC $13B
CV's Substack 13 clicks

Is The Market Turning The Page?

CoreWeave’s debt and equity price action is framed as a wake-up call for investors amid a broader market discussion.

CRWV $34B
WHAT ARE WE DOING? “Contrarians At The Gate” 54 clicks

PesoRama: Research Flash

PesoRama will reach 54 JOi Dollar Plus stores by November after raising C$28.4 million, funding more than 50 additional Mexican store…

TBBB $6.8B
Atrium Research - Equity Research 7 clicks

Modine Deep Dive

Modine, soon Modexus Solutions, has a $4 billion hyperscaler cooling contract but must ramp factory output and restore margins as data…

MOD $7.9B
CV's Substack 19 clicks

Publications we follow

Every publication on this site, hand-picked.

128 publications

Newsletters 108

YouTube 4

Blogs 15

Seeking Alpha 53 of 245

Nominate a publication

X accounts we follow

Every account on this site, hand-picked.

90 accounts
Nominate an account

Investor letters we follow

189 firms

Sectors

Ordered by how often our editor reaches for them.