The press release that moved Synopsys on Wednesday contains exactly one dollar figure, and it is a floor: “$1 billion-plus,” over multiple years, for chip-design work Amazon will license.
That was enough. Shares rose 4.78% to $434.94, according to The Motley Fool, lifting the market value to about $83 billion. The gain works out to roughly $3.9 billion in a single session, on a headline number a quarter that size.
Two deals were announced together, and they are not the same kind of deal. Set them side by side and the stock move starts to make less sense.
The Amazon Deal
Amazon Web Services signed a multi-year agreement worth more than $1 billion, according to the Synopsys press release. It covers application-optimized silicon IP, design software, simulation and agentic AI tools for Amazon’s Trainium and Graviton chips.
Synopsys, in turn, agrees to run its own AI applications and agents on Amazon EC2, cloud storage and Bedrock. So part of the money travels back to Amazon.
The OpenAI Deal
The companies will build GPT-Synopsys, a model for semiconductor design, and sell it jointly. Revenue will be shared. Financial terms were not disclosed, and the Amazon press release makes no mention of OpenAI.
The Motley Fool notes that details of the revenue share “were not provided,” and that what it means for fundamentals remains “fuzzy.”
The scale problem is easy to state. Synopsys raised fiscal 2026 revenue guidance to between $9.69 billion and $9.74 billion, per its third-quarter results. A deal worth “$1 billion-plus” over several years is a modest slice of one year’s sales, and it is spread across the years.
So the market paid about $3.9 billion for a contract whose stated floor is less than that, with terms that run over time and partly return to the customer as cloud spend. The OpenAI half it paid for on faith.
That is a fair price only if the disclosed figure is far below the real one, or if the OpenAI model becomes a product people buy. Neither is on the page yet.
Here is where BTN comes down. The Amazon deal is real and good for Synopsys, but it is not a $3.9 billion event, and the stock was carried the rest of the way by the OpenAI name. A partnership with no stated revenue, no timeline and no pricing is an announcement, not a backlog.
There is a second thing worth noticing. Chipmakers were rallying that day regardless. Intel gained about 3.3%, and Hewlett Packard Enterprise rose more than 5% after a $1.2 billion order from Vultr for AMD Helios racks, according to the Invezz market wrap. Synopsys rode a tide, and some of its gain belongs to the tide.
What would change the read is disclosure. If Synopsys tells investors on its next call how the AWS payments are scheduled and whether the OpenAI revenue share has a minimum, the move gets a number to defend. Until then, the stock is pricing a $1 billion floor and a good feeling.