Thesis · Networking, Interconnect & Optics

Will Arista Networks' GAAP gross margin fall below 60% in any quarter reported before 2027-12-31?

CPO deletes the board-level signal-integrity engineering that justified branded switch premiums, pushing hyperscalers to whitebox/ODM sourcing and compressing incumbent network vendor margins.

7 dated tests · 0 resolved · next on

The tests More theses in Networking, Interconnect & Optics

Who is on each side

The two sides.

Each side in DeepStack’s words, then the voices who argue it, attributed and paraphrased, dated where the date is known. A voice links to its page on DeepStack where one exists.

The case for yes

Co-packaged optics reshapes the supply chain and compresses Arista's margin

Moving optics on-package removes the hardest motherboard routing problem, lowering the engineering barrier to entry for contract manufacturers. Hyperscaler sourcing shifts to ODM whiteboxes and branded network vendor gross margins compress, pushing Arista's GAAP gross margin below 60% in a reported quarter before 2027-12-31.

The case for no

Arista's gross margin holds at or above 60% through 2027

Electrical channels become lossy and hard to equalize at 224G-class SerDes speeds and spike power consumption, so co-packaged optics and advanced copper redrivers become required additions rather than substitutes, opening new engineering-differentiated TAM instead of commoditizing it. Shortened electrical paths and improved signal integrity from on-package optics still demand the kind of system-level integration that preserves premium positioning. On this side, Arista's GAAP gross margin stays at or above 60% every quarter through 2027.

1 voice

Co-packaged optics reshapes the supply chain and compresses Arista's margin

  1. Daniel Romero

    Network vendors like Arista commanded premium prices through elite engineering required to route ultra-fast electrical signals across motherboards without signal degradation. CPO deletes this engineering problem by moving optics on-package. When…

    Source

2 voices

Arista's gross margin holds at or above 60% through 2027

  1. Gaetano

    Moving from 112G to 224G electrical SerDes creates severe power and thermal constraints. Vesta 200 co-packages optics directly with switch ASIC, shortening electrical path and improving signal integrity. Nitro Redriver boosts electrical signal to…

    Source

  2. Dylan Patel

    Nvidia controls the accelerator design and has built NVSwitch for inter-node communication. By investing in Ayar Labs and partnering with foundries on co-packaged optics, Nvidia ensures it can integrate optical interconnects into its…

    Source

What would settle it

The dated tests.

Each test names the public source that settles it, the rule and the day. The Call’s number, the readers’ median and the machines’ numbers stand beside it, as on the Docket.

  1. Arista Networks, operating cash flow as a share of revenue, quarter ended September 30, 2026: whether it comes in at or above 30%.

    On the Docket Pendingth071-t01Open question

    Specification pending

    The machinesClaude 72% · DeepSeek 85%

    Claude: 72%DeepSeek: 85%

    Your number

  2. Credo, operating cash flow as a share of revenue, quarter ended October 31, 2026: whether it comes in at or above 15%.

    On the Docket Pendingth071-t02Pre-specified

    Question
    Did the net cash from operating activities of Credo for the quarter ended October 31, 2026 come to at or above 15.0% of its revenue?
    Source
    SEC EDGAR, XBRL company facts of Credo (Forms 10-Q and 10-K)
    Rule
    Divide the net cash from operating activities by the revenue that Credo reports for the quarter ended October 31, 2026 in its 10-Q or 10-K filing on SEC EDGAR. The answer is yes if the ratio is at or above 15.0%; no if it is below 15.0%.
    If the source is late, revised or silent
    If Credo has not filed by December 17, 2026, or a filing restates a period the rule reads, the test is inconclusive, and the Result says what was read and what was missing.
    Base rate
    Credo's operating cash flow as a share of revenue was 18.8% for the quarter ended August 1, 2026, by its filing on SEC EDGAR.
    Outside view
    A year earlier, for the quarter ended August 2, 2025, the same line read 24.3%, so the rungs sit on the last print.
    What would change the number
    A change in product mix, a one-time charge, or a reclassified line would move the reading.

    The Call, before the dateExpects yes. Gives the yes answer 73%.

    73%

    0 · no100 · yes

    The machinesClaude 85% · DeepSeek 85%

    Claude: 85%DeepSeek: 85%
    The ladder 3 rungs on one reading, Dec 2, 2026: each asks whether it lands above its threshold, so the Call’s numbers down the rungs sketch where it expects the reading to land.

    1. Above 15%Call 73% · Claude 85% · DeepSeek 85%

      73%

    2. Above 20%Call 47% · Claude 80% · DeepSeek 80%

      47%

    3. Above 25%Call 22% · Claude 72% · DeepSeek 22%

      22%

    0 · no50100 · yes

    Your number

  3. Credo, operating cash flow as a share of revenue, quarter ended October 31, 2026: whether it comes in at or above 20%.

    On the Docket Pendingth071-t03Pre-specified

    Question
    Did the net cash from operating activities of Credo for the quarter ended October 31, 2026 come to at or above 20.0% of its revenue?
    Source
    SEC EDGAR, XBRL company facts of Credo (Forms 10-Q and 10-K)
    Rule
    Divide the net cash from operating activities by the revenue that Credo reports for the quarter ended October 31, 2026 in its 10-Q or 10-K filing on SEC EDGAR. The answer is yes if the ratio is at or above 20.0%; no if it is below 20.0%.
    If the source is late, revised or silent
    If Credo has not filed by December 17, 2026, or a filing restates a period the rule reads, the test is inconclusive, and the Result says what was read and what was missing.
    Base rate
    Credo's operating cash flow as a share of revenue was 18.8% for the quarter ended August 1, 2026, by its filing on SEC EDGAR.
    Outside view
    A year earlier, for the quarter ended August 2, 2025, the same line read 24.3%, so the rungs sit on the last print.
    What would change the number
    A change in product mix, a one-time charge, or a reclassified line would move the reading.

    The Call, before the dateEither answer fits the Call. Gives the yes answer 47%.

    47%

    0 · no100 · yes

    The machinesClaude 80% · DeepSeek 80%

    Claude: 80%DeepSeek: 80%

    Your number

  4. Credo, operating cash flow as a share of revenue, quarter ended October 31, 2026: whether it comes in at or above 25%.

    On the Docket Pendingth071-t04Pre-specified

    Question
    Did the net cash from operating activities of Credo for the quarter ended October 31, 2026 come to at or above 25.0% of its revenue?
    Source
    SEC EDGAR, XBRL company facts of Credo (Forms 10-Q and 10-K)
    Rule
    Divide the net cash from operating activities by the revenue that Credo reports for the quarter ended October 31, 2026 in its 10-Q or 10-K filing on SEC EDGAR. The answer is yes if the ratio is at or above 25.0%; no if it is below 25.0%.
    If the source is late, revised or silent
    If Credo has not filed by December 17, 2026, or a filing restates a period the rule reads, the test is inconclusive, and the Result says what was read and what was missing.
    Base rate
    Credo's operating cash flow as a share of revenue was 18.8% for the quarter ended August 1, 2026, by its filing on SEC EDGAR.
    Outside view
    A year earlier, for the quarter ended August 2, 2025, the same line read 24.3%, so the rungs sit on the last print.
    What would change the number
    A change in product mix, a one-time charge, or a reclassified line would move the reading.

    The Call, before the dateExpects no. Gives the yes answer 22%.

    22%

    0 · no100 · yes

    The machinesClaude 72% · DeepSeek 22%

    Claude: 72%DeepSeek: 22%

    Your number

  5. Ciena, operating cash flow as a share of revenue, quarter ended October 31, 2026: whether it comes in at or above 9%.

    On the Docket Pendingth071-t05Pre-specified

    Question
    Did the net cash from operating activities of Ciena for the quarter ended October 31, 2026 come to at or above 9.0% of its revenue?
    Source
    SEC EDGAR, XBRL company facts of Ciena (Forms 10-Q and 10-K)
    Rule
    Divide the net cash from operating activities by the revenue that Ciena reports for the quarter ended October 31, 2026 in its 10-Q or 10-K filing on SEC EDGAR. The answer is yes if the ratio is at or above 9.0%; no if it is below 9.0%.
    If the source is late, revised or silent
    If Ciena has not filed by December 17, 2026, or a filing restates a period the rule reads, the test is inconclusive, and the Result says what was read and what was missing.
    Base rate
    Ciena's operating cash flow as a share of revenue was 11.7% for the quarter ended August 1, 2026, by its filing on SEC EDGAR.
    Outside view
    A year earlier, for the quarter ended August 2, 2025, the same line read 14.3%, so the rungs sit on the last print.
    What would change the number
    A change in product mix, a one-time charge, or a reclassified line would move the reading.

    The Call, before the dateExpects yes. Gives the yes answer 71%.

    71%

    0 · no100 · yes

    The machinesClaude 72% · DeepSeek 78%

    Claude: 72%DeepSeek: 78%
    The ladder 3 rungs on one reading, Dec 10, 2026: each asks whether it lands above its threshold, so the Call’s numbers down the rungs sketch where it expects the reading to land.

    1. Above 9%Call 71% · Claude 72% · DeepSeek 78%

      71%

    2. Above 12%Call 48% · Claude 63% · DeepSeek 65%

      48%

    3. Above 15%Call 22% · Claude 45% · DeepSeek 20%

      22%

    0 · no50100 · yes

    Your number

  6. Ciena, operating cash flow as a share of revenue, quarter ended October 31, 2026: whether it comes in at or above 12%.

    On the Docket Pendingth071-t06Pre-specified

    Question
    Did the net cash from operating activities of Ciena for the quarter ended October 31, 2026 come to at or above 12.0% of its revenue?
    Source
    SEC EDGAR, XBRL company facts of Ciena (Forms 10-Q and 10-K)
    Rule
    Divide the net cash from operating activities by the revenue that Ciena reports for the quarter ended October 31, 2026 in its 10-Q or 10-K filing on SEC EDGAR. The answer is yes if the ratio is at or above 12.0%; no if it is below 12.0%.
    If the source is late, revised or silent
    If Ciena has not filed by December 17, 2026, or a filing restates a period the rule reads, the test is inconclusive, and the Result says what was read and what was missing.
    Base rate
    Ciena's operating cash flow as a share of revenue was 11.7% for the quarter ended August 1, 2026, by its filing on SEC EDGAR.
    Outside view
    A year earlier, for the quarter ended August 2, 2025, the same line read 14.3%, so the rungs sit on the last print.
    What would change the number
    A change in product mix, a one-time charge, or a reclassified line would move the reading.

    The Call, before the dateEither answer fits the Call. Gives the yes answer 48%.

    48%

    0 · no100 · yes

    The machinesClaude 63% · DeepSeek 65%

    Claude: 63%DeepSeek: 65%

    Your number

  7. Ciena, operating cash flow as a share of revenue, quarter ended October 31, 2026: whether it comes in at or above 15%.

    On the Docket Pendingth071-t07Pre-specified

    Question
    Did the net cash from operating activities of Ciena for the quarter ended October 31, 2026 come to at or above 15.0% of its revenue?
    Source
    SEC EDGAR, XBRL company facts of Ciena (Forms 10-Q and 10-K)
    Rule
    Divide the net cash from operating activities by the revenue that Ciena reports for the quarter ended October 31, 2026 in its 10-Q or 10-K filing on SEC EDGAR. The answer is yes if the ratio is at or above 15.0%; no if it is below 15.0%.
    If the source is late, revised or silent
    If Ciena has not filed by December 17, 2026, or a filing restates a period the rule reads, the test is inconclusive, and the Result says what was read and what was missing.
    Base rate
    Ciena's operating cash flow as a share of revenue was 11.7% for the quarter ended August 1, 2026, by its filing on SEC EDGAR.
    Outside view
    A year earlier, for the quarter ended August 2, 2025, the same line read 14.3%, so the rungs sit on the last print.
    What would change the number
    A change in product mix, a one-time charge, or a reclassified line would move the reading.

    The Call, before the dateExpects no. Gives the yes answer 22%.

    22%

    0 · no100 · yes

    The machinesClaude 45% · DeepSeek 20%

    Claude: 45%DeepSeek: 20%

    Your number

A thesis page states one question and both sides of it; DeepStack takes no side in words, and its view is the number it gives each test before the date. Analysis and opinion, not investment advice. Voices are paraphrased from public writing and attributed by name; DeepStack shows no score, ranking or accuracy for any person. Pre-specified means the words were approved on or before the test’s date. Specified after the date means they were written afterwards: such a test is counted and shown, and never rated. An open question has no words yet. The Call’s number is the chance, from 0 to 100, that the Call gives the yes answer to a test’s question, recorded before the test’s date; it is DeepStack’s own reading, not a market price and not advice. The readers’ mark on the same line is the readers’ median, the middle of the numbers signed-in readers gave the test, shown from 25 readers. The machines: Each model read this page and nothing else. The number that counts is the latest one each model gave before the test closed.