A Claim Made in an IPO Roadshow, Not a Press Release
Anthropic's investor roadshow, posted on its IPO site, includes a compute segment in which co-founder Tom Brown says the company now trains and serves Claude across AWS Trainium, Google TPUs, NVIDIA GPUs and AMD GPUs. According to The Decoder and a transcript review by CellCog, Brown says bringing on a new chip platform used to take dozens of engineers months, and that this time the company's Mythos model "got Claude running on AMD in just three days with basically no human intervention," porting or writing almost 100% of the kernels.
The fine print matters. CellCog reports that the slide's footnote limits the "~3 day" figure to bringing up prompt processing for one Anthropic model on AMD MI355X GPUs at a useful level of performance, compared with a 6 to 12 month historical estimate. CellCog also notes that the prospectus itself gives no number of days; it says only that Claude helps Anthropic bring new chip platforms into production more quickly.
The money side came from the filing. GuruFocus via Yahoo Finance reported that Anthropic's amended registration statement allocates AMD 33,783,783 shares at the $74 range midpoint, a roughly $2.5 billion commitment to the private placement we described in our Nov. 10 Anthropic IPO article. The same report said Goldman Sachs named AMD among its top semiconductor picks.
From +1.7% at the Open to +8% by Mid-Afternoon
The move built through the day. GuruFocus had AMD up 1.72% at $524.07 at 9:45 a.m. Eastern. By about 3:08 p.m. Eastern, Cboe's delayed feed showed $556.27, up $41.06 (~8.0%) from the $515.21 close, after an open of $543.10 and a range of $522.65 to $567.65 on about 32.8 million shares.
Part of that is the tape. CNBC tied Wednesday's AI rally to CoreWeave's results, which lifted memory, optics and chip names; we covered that move in this morning's CoreWeave story. Separating AMD's own catalyst from the sector beta isn't possible from price data alone.
Same-Day Calls Dominated the Tape
Cboe showed about 774,500 calls and 471,700 puts traded, roughly 1.6 calls per put. The busiest lines were all contracts expiring the same day (Nov. 11):
| Contract | Volume | Bid / Ask | Open interest |
Volume many times the open interest is typical of 0DTE trading: positions opened and closed within the session. By mid-afternoon the $565 and $560 calls, which needed AMD to hold near the day's high, had collapsed to pennies and well under a dollar as the stock slipped back from $567.65. That is the core risk of same-day options in plain view: a correct read on direction still loses if the timing is off by a few dollars and a few hours. Cboe volume data doesn't show whether trades were buys or sells.
IV Slipped Even as the Stock Ripped
AMD's 30-day implied volatility was about 61.7%, down roughly 3.6 points. A rising stock with falling IV is common in a relief rally, as hedges bought during last week's AI selloff come off. At quote midpoints, at-the-money straddles priced:
AMD already reported third-quarter results, covered in our Nov. 3 article, so these prices reflect general volatility rather than an AMD earnings date. The Nov. 20 lower breakeven sits a little below Tuesday's close, meaning the nine-day market prices a move roughly the size of today's gain in either direction.
How Traders Commonly Approach a Headline-Driven Pop (Educational)
These are general descriptions, not recommendations:
Reasons the Rally Could Cool
For background on why implied volatility often falls in relief rallies, see our implied volatility explainer. The OCC options disclosure document explains the risks of standardized options.
Sources
*By the OptionsPilot Editorial Team. Published November 11, 2026, 12:25 PM PT. This article is for education only and is not investment advice. Options involve risk and are not suitable for all investors.*
