<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml">
  <url>
    <loc>https://www.optiondata.io/</loc>
    <changefreq>weekly</changefreq>
    <priority>1.00</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/" />
    <xhtml:link rel="alternate" hreflang="zh" href="https://www.optiondata.io/?lang=zh" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/" />
  </url>
  <url>
    <loc>https://www.optiondata.io/?lang=zh</loc>
    <changefreq>weekly</changefreq>
    <priority>0.90</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/" />
    <xhtml:link rel="alternate" hreflang="zh" href="https://www.optiondata.io/?lang=zh" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/" />
  </url>
  <url>
    <loc>https://www.optiondata.io/changelog</loc>
    <lastmod>2026-10-14</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.70</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/changelog" />
    <xhtml:link rel="alternate" hreflang="zh" href="https://www.optiondata.io/changelog?lang=zh" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/changelog" />
  </url>
  <url>
    <loc>https://www.optiondata.io/changelog?lang=zh</loc>
    <lastmod>2026-10-14</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.63</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/changelog" />
    <xhtml:link rel="alternate" hreflang="zh" href="https://www.optiondata.io/changelog?lang=zh" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/changelog" />
  </url>
  <url>
    <loc>https://www.optiondata.io/docs</loc>
    <changefreq>weekly</changefreq>
    <priority>0.95</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/docs" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/docs" />
  </url>
  <url>
    <loc>https://www.optiondata.io/docs/getting-started</loc>
    <changefreq>weekly</changefreq>
    <priority>0.90</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/docs/getting-started" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/docs/getting-started" />
  </url>
  <url>
    <loc>https://www.optiondata.io/docs/manage-api-key</loc>
    <changefreq>weekly</changefreq>
    <priority>0.90</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/docs/manage-api-key" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/docs/manage-api-key" />
  </url>
  <url>
    <loc>https://www.optiondata.io/docs/add-payment-method</loc>
    <changefreq>weekly</changefreq>
    <priority>0.90</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/docs/add-payment-method" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/docs/add-payment-method" />
  </url>
  <url>
    <loc>https://www.optiondata.io/docs/manage-subscription</loc>
    <changefreq>weekly</changefreq>
    <priority>0.90</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/docs/manage-subscription" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/docs/manage-subscription" />
  </url>
  <url>
    <loc>https://www.optiondata.io/docs/api-rate-limits</loc>
    <changefreq>weekly</changefreq>
    <priority>0.90</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/docs/api-rate-limits" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/docs/api-rate-limits" />
  </url>
  <url>
    <loc>https://www.optiondata.io/docs/historical-sql-quickstart</loc>
    <changefreq>weekly</changefreq>
    <priority>0.90</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/docs/historical-sql-quickstart" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/docs/historical-sql-quickstart" />
  </url>
  <url>
    <loc>https://www.optiondata.io/docs/option-chain-quickstart</loc>
    <changefreq>weekly</changefreq>
    <priority>0.90</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/docs/option-chain-quickstart" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/docs/option-chain-quickstart" />
  </url>
  <url>
    <loc>https://www.optiondata.io/docs/historical-option-trades-api</loc>
    <changefreq>weekly</changefreq>
    <priority>0.90</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/docs/historical-option-trades-api" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/docs/historical-option-trades-api" />
  </url>
  <url>
    <loc>https://www.optiondata.io/docs/option-chain-api</loc>
    <changefreq>weekly</changefreq>
    <priority>0.90</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/docs/option-chain-api" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/docs/option-chain-api" />
  </url>
  <url>
    <loc>https://www.optiondata.io/docs/basic-concepts</loc>
    <changefreq>weekly</changefreq>
    <priority>0.90</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/docs/basic-concepts" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/docs/basic-concepts" />
  </url>
  <url>
    <loc>https://www.optiondata.io/docs/troubleshoot-api-access</loc>
    <changefreq>weekly</changefreq>
    <priority>0.90</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/docs/troubleshoot-api-access" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/docs/troubleshoot-api-access" />
  </url>
  <url>
    <loc>https://www.optiondata.io/support</loc>
    <changefreq>monthly</changefreq>
    <priority>0.70</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/support" />
    <xhtml:link rel="alternate" hreflang="zh" href="https://www.optiondata.io/support?lang=zh" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/support" />
  </url>
  <url>
    <loc>https://www.optiondata.io/support?lang=zh</loc>
    <changefreq>monthly</changefreq>
    <priority>0.63</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/support" />
    <xhtml:link rel="alternate" hreflang="zh" href="https://www.optiondata.io/support?lang=zh" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/support" />
  </url>
  <url>
    <loc>https://www.optiondata.io/terms-of-service</loc>
    <changefreq>yearly</changefreq>
    <priority>0.40</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/terms-of-service" />
    <xhtml:link rel="alternate" hreflang="zh" href="https://www.optiondata.io/terms-of-service?lang=zh" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/terms-of-service" />
  </url>
  <url>
    <loc>https://www.optiondata.io/terms-of-service?lang=zh</loc>
    <changefreq>yearly</changefreq>
    <priority>0.36</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/terms-of-service" />
    <xhtml:link rel="alternate" hreflang="zh" href="https://www.optiondata.io/terms-of-service?lang=zh" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/terms-of-service" />
  </url>
  <url>
    <loc>https://www.optiondata.io/privacy</loc>
    <changefreq>yearly</changefreq>
    <priority>0.40</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/privacy" />
    <xhtml:link rel="alternate" hreflang="zh" href="https://www.optiondata.io/privacy?lang=zh" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/privacy" />
  </url>
  <url>
    <loc>https://www.optiondata.io/privacy?lang=zh</loc>
    <changefreq>yearly</changefreq>
    <priority>0.36</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/privacy" />
    <xhtml:link rel="alternate" hreflang="zh" href="https://www.optiondata.io/privacy?lang=zh" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/privacy" />
  </url>
  <url>
    <loc>https://www.optiondata.io/historical-data-agreement</loc>
    <changefreq>yearly</changefreq>
    <priority>0.40</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/historical-data-agreement" />
    <xhtml:link rel="alternate" hreflang="zh" href="https://www.optiondata.io/historical-data-agreement?lang=zh" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/historical-data-agreement" />
  </url>
  <url>
    <loc>https://www.optiondata.io/historical-data-agreement?lang=zh</loc>
    <changefreq>yearly</changefreq>
    <priority>0.36</priority>
    <xhtml:link rel="alternate" hreflang="en-US" href="https://www.optiondata.io/historical-data-agreement" />
    <xhtml:link rel="alternate" hreflang="zh" href="https://www.optiondata.io/historical-data-agreement?lang=zh" />
    <xhtml:link rel="alternate" hreflang="x-default" href="https://www.optiondata.io/historical-data-agreement" />
  </url>
</urlset>
