# Calix, Inc: overview

CALX · NYSE · CIK 1406666 · [Communication](/sectors/communication.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/calx.md) · [Financials](/companies/calx/financials.md) · [Filings](/companies/calx/filings.md) · [Insiders](/companies/calx/insiders.md)

Latest reported revenue: [$293.3m](/filings/0001406666-26-000034.md) for Q2 FY2026, three months to 2026-06-27, from the 10-Q filed Jul 21, 2026 (XBRL us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax, accession 0001406666-26-000034).

## Last eight quarters

| Line item | Unit | Q3 FY2024 (2024-09-28) | Q4 FY2024 (2024-12-31) | Q1 FY2025 (2025-03-29) | Q2 FY2025 (2025-06-28) | Q3 FY2025 (2025-09-27) | Q4 FY2025 (2025-12-31) | Q1 FY2026 (2026-03-28) | Q2 FY2026 (2026-06-27) |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: |
| Revenue | $m | [201](/filings/0001406666-25-000045.md) | [206 d](/filings/0001406666-26-000005.md) | [220](/filings/0001406666-26-000019.md) | [242](/filings/0001406666-26-000034.md) | [265](/filings/0001406666-25-000045.md) | [272 d](/filings/0001406666-26-000005.md) | [280](/filings/0001406666-26-000019.md) | [293](/filings/0001406666-26-000034.md) |
| Gross margin | % | [54.8%](/filings/0001406666-25-000045.md) | [55.0% d](/filings/0001406666-26-000005.md) | [55.7%](/filings/0001406666-26-000019.md) | [56.3%](/filings/0001406666-26-000034.md) | [57.3%](/filings/0001406666-25-000045.md) | [57.7% d](/filings/0001406666-26-000005.md) | [56.9%](/filings/0001406666-26-000019.md) | [54.6%](/filings/0001406666-26-000034.md) |
| Operating margin | % | [(5.4%)](/filings/0001406666-25-000045.md) | [(9.1%) d](/filings/0001406666-26-000005.md) | [(2.8%)](/filings/0001406666-26-000019.md) | [0.2%](/filings/0001406666-26-000034.md) | [6.6%](/filings/0001406666-25-000045.md) | [3.4% d](/filings/0001406666-26-000005.md) | [4.5%](/filings/0001406666-26-000019.md) | [7.4%](/filings/0001406666-26-000034.md) |
| Net margin | % | [(2.0%)](/filings/0001406666-25-000045.md) | [(8.7%) d](/filings/0001406666-26-000005.md) | [(2.2%)](/filings/0001406666-26-000019.md) | [(0.1%)](/filings/0001406666-26-000034.md) | [5.9%](/filings/0001406666-25-000045.md) | [2.6% d](/filings/0001406666-26-000005.md) | [4.0%](/filings/0001406666-26-000019.md) | [5.8%](/filings/0001406666-26-000034.md) |
| Diluted EPS | $ per share | [(0.06)](/filings/0001406666-25-000045.md) | not reported | [(0.07)](/filings/0001406666-26-000019.md) | [0.00](/filings/0001406666-26-000034.md) | [0.22](/filings/0001406666-25-000045.md) | not reported | [0.16](/filings/0001406666-26-000019.md) | [0.26](/filings/0001406666-26-000034.md) |
| Free cash flow | $m | [12.8 d](/filings/0001406666-25-000045.md) | [10.2 d](/filings/0001406666-26-000005.md) | [12.9](/filings/0001406666-26-000019.md) | [35.6 d](/filings/0001406666-26-000034.md) | [26.7 d](/filings/0001406666-25-000045.md) | [40.3 d](/filings/0001406666-26-000005.md) | [6.5](/filings/0001406666-26-000019.md) | [11.9 d](/filings/0001406666-26-000034.md) |

- Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure.
- Gross margin (gross profit / revenue). XBRL Gross profit: us-gaap:GrossProfit; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure.
- Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure.
- Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure.
- Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted.
- Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. Derived values: 9-month figure less the 6-month figure; 12-month figure less the 9-month figure; 6-month figure less the 3-month figure.

## Last five fiscal years

| Line item | Unit | FY2021 (2021-12-31) | FY2022 (2022-12-31) | FY2023 (2023-12-31) | FY2024 (2024-12-31) | FY2025 (2025-12-31) |
| --- | --- | ---: | ---: | ---: | ---: | ---: |
| Revenue | $m | [679](/filings/0001406666-24-000012.md) | [868](/filings/0001406666-25-000008.md) | [1,040](/filings/0001406666-26-000005.md) | [832](/filings/0001406666-26-000005.md) | [1,000](/filings/0001406666-26-000005.md) |
| Gross margin | % | [52.5%](/filings/0001406666-24-000012.md) | [50.2%](/filings/0001406666-25-000008.md) | [49.9%](/filings/0001406666-26-000005.md) | [54.6%](/filings/0001406666-26-000005.md) | [56.8%](/filings/0001406666-26-000005.md) |
| Operating margin | % | [10.9%](/filings/0001406666-24-000012.md) | [6.1%](/filings/0001406666-25-000008.md) | [2.5%](/filings/0001406666-26-000005.md) | [(5.2%)](/filings/0001406666-26-000005.md) | [2.1%](/filings/0001406666-26-000005.md) |
| Net margin | % | [35.1%](/filings/0001406666-24-000012.md) | [4.7%](/filings/0001406666-25-000008.md) | [2.8%](/filings/0001406666-26-000005.md) | [(3.6%)](/filings/0001406666-26-000005.md) | [1.8%](/filings/0001406666-26-000005.md) |
| Diluted EPS | $ per share | [3.51](/filings/0001406666-24-000012.md) | [0.60](/filings/0001406666-25-000008.md) | [0.42](/filings/0001406666-26-000005.md) | [(0.45)](/filings/0001406666-26-000005.md) | [0.26](/filings/0001406666-26-000005.md) |
| Free cash flow | $m | [46.3](/filings/0001406666-24-000012.md) | [13.1](/filings/0001406666-25-000008.md) | [38.4](/filings/0001406666-26-000005.md) | [50.3](/filings/0001406666-26-000005.md) | [116](/filings/0001406666-26-000005.md) |

- Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.
- Gross margin (gross profit / revenue). XBRL Gross profit: us-gaap:GrossProfit; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.
- Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.
- Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.
- Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted.
- Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquirePropertyPlantAndEquipment.

Each value links to the filing it came from. d marks a derived value. A ratio is not reported when any input is missing.

## Insider purchases and sales

The last 20 open-market transactions on Form 4 (codes P and S). Reported price is as stated on the form, not a market price. [All insider transactions](/companies/calx/insiders.md)

None in coverage.

## Funds that report holding it

From each manager’s latest Form 13F, largest reported value first. Reported value is as filed: filing data, not a price. [All funds](/funds.md)

| Fund | Quarter ended | Reported value | Shares | Put or call | Change on the quarter before |
| --- | --- | ---: | ---: | --- | --- |
| [BlackRock, Inc.](/funds/2012383.md) | 2026-06-30 | $439.5m | 11,775,490 |  | Added +622,087 |
| [VANGUARD PORTFOLIO MANAGEMENT LLC](/funds/2100121.md) | 2026-06-30 | $208.5m | 5,588,048 |  | Added +54,294 |
| [ALLIANCEBERNSTEIN L.P.](/funds/1109448.md) | 2026-06-30 | $159.1m | 3,248,412 |  | Reduced −2,716 |
| [STATE STREET CORP](/funds/93751.md) | 2026-06-30 | $108.8m | 2,915,560 |  | Added +313,227 |
| [VANGUARD CAPITAL MANAGEMENT LLC](/funds/2100119.md) | 2026-06-30 | $96.6m | 2,587,424 |  | Reduced −99,101 |
| [GEODE CAPITAL MANAGEMENT, LLC](/funds/1214717.md) | 2026-06-30 | $55.3m | 1,481,595 |  | Added +45,889 |
| [WESTFIELD CAPITAL MANAGEMENT CO LP](/funds/1177719.md) | 2026-06-30 | $49.4m | 1,324,534 |  | Reduced −221,567 |
| [DIMENSIONAL FUND ADVISORS LP](/funds/354204.md) | 2026-06-30 | $48.9m | 1,309,436 |  | Added +90,941 |
| [CITADEL ADVISORS LLC](/funds/1423053.md) | 2026-06-30 | $45.1m | 1,208,764 |  | Added +780,566 |
| [PARADIGM CAPITAL MANAGEMENT INC/NY](/funds/1037792.md) | 2026-06-30 | $37.2m | 997,134 |  | Added +228,934 |

## Recent filings

[All 1,103 filings](/companies/calx/filings.md)

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-10-08 | 20:10 ET | [8-K](/filings/0001406666-26-000038.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001406666-26-000038 |
| 2026-07-21 | 20:03 ET | [10-Q](/filings/0001406666-26-000034.md) | Quarterly report, period 2026-06-27 | 0001406666-26-000034 |
| 2026-07-20 | 21:06 ET | [8-K](/filings/0001406666-26-000028.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001406666-26-000028 |
| 2026-05-15 | 23:37 ET | [8-K](/filings/0001406666-26-000021.md) | 5.07 Shareholder vote results | 0001406666-26-000021 |
| 2026-04-22 | 20:03 ET | [10-Q](/filings/0001406666-26-000019.md) | Quarterly report, period 2026-03-28 | 0001406666-26-000019 |
| 2026-04-21 | 20:08 ET | [8-K](/filings/0001406666-26-000017.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001406666-26-000017 |
| 2026-04-21 | 20:06 ET | [8-K](/filings/0001406666-26-000016.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001406666-26-000016 |
| 2026-03-27 | 20:03 ET | [DEF 14A](/filings/0001406666-26-000006.md) | Proxy statement, period 2025-12-31 | 0001406666-26-000006 |
| 2026-02-20 | 21:02 ET | [10-K](/filings/0001406666-26-000005.md) | Annual report, period 2025-12-31 | 0001406666-26-000005 |
| 2026-01-28 | 21:18 ET | [8-K](/filings/0001406666-26-000004.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001406666-26-000004 |

## Latest annual report

[Form 10-K for the fiscal year ended Dec 31, 2025](/filings/0001406666-26-000005.md), filed Feb 20, 2026.

## Forecast league

Q3 FY2026, the quarter ended 2026-09-27, is open for forecasts until the first results filing for it is accepted by EDGAR. Results are due by \[object Promise\]. [Forecast this quarter](/leagues/2026q3/targets/144b92eb-bc53-4713-aaad-ce52ec1e52b9)

## About the filer

- CIK: 1406666
- Tickers: CALX
- Exchange: NYSE
- SIC code: 4899 Communications Services, NEC
- State of incorporation: not reported
- Filer category: Large accelerated filer

Source: SEC EDGAR, XBRL company facts, the filing index and Forms 4. Last ingested by Listed: Oct 24, 2026, 15:39 ET. No prices; not investment advice.