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        <title>Sirius XM Holdings Inc. Quarterly report pursuant to Section 13 or 15(d)</title>
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            <h3>Quarterly report pursuant to Section 13 or 15(d)</h3>
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                                <a class="menu-item " href="/sec-filings/all-sec-filings/xbrl_doc_only/4515">Cover</a>
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                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4515">Document and Entity Information</a></li>
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                                <a class="menu-item current" href="/sec-filings/all-sec-filings/xbrl_doc_only/4516">Financial Statements</a>
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                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4516">Condensed Consolidated Balance Sheets</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4517">Condensed Consolidated Balance Sheets (Parenthetical)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4518">Condensed Consolidated Statements of Operations</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4519">Condensed Consolidated Statements of Comprehensive Loss</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4520">Condensed Consolidated Statements of Cash Flows</a></li>
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                                <a class="menu-item " href="/sec-filings/all-sec-filings/xbrl_doc_only/4521">Notes to Financial Statements</a>
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                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4521">Description of Business and Basis of Presentation</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4522">Summary of Significant Accounting Policies</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4523">Cash, Cash Equivalents and Investments</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4524">Fair Value</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4525">Commitments and Contingencies</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4526">Assets and Liabilities Held for Sale</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4527">Goodwill and Intangible Assets</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4528">Debt Instruments</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4529">Redeemable Convertible Preferred Stock</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4530">Stock-based Compensation Plans and Awards</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4531">Net Loss Per Common Share</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4532">Segment Data and Revenue by Geographic Area</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4533">Restructuring Charges</a></li>
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                                <a class="menu-item " href="/sec-filings/all-sec-filings/xbrl_doc_only/4534">Accounting Policies</a>
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                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4534">Summary of Significant Accounting Policies (Policies)</a></li>
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                                <a class="menu-item " href="/sec-filings/all-sec-filings/xbrl_doc_only/4535">Notes Tables</a>
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                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4535">Cash, Cash Equivalents and Investments (Tables)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4536">Fair Value (Tables)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4537">Assets and Liabilities Held for Sale (Tables)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4538">Goodwill and Intangible Assets (Tables)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4539">Debt Instruments (Tables)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4540">Redeemable Convertible Preferred Stock (Tables)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4541">Stock-based Compensation Plans and Awards (Tables)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4542">Net Loss Per Common Share (Tables)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4543">Segment Data and Revenue by Geographic Area (Tables)</a></li>
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                                <a class="menu-item " href="/sec-filings/all-sec-filings/xbrl_doc_only/4544">Notes Details</a>
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                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4544">Summary of Significant Accounting Policies - Narrative (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4545">Cash, Cash Equivalents and Investments - Schedule of Cash, Cash Equivalents and Investments (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4546">Cash, Cash Equivalents and Investments - Summary of Available-for-sale Securities&#039; Adjusted Cost, Gross Unrealized Gains, Gross Unrealized Losses and Fair Value by Significant Investment Category (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4547">Cash, Cash Equivalents and Investments - Schedule of Available-for-sale Investments by Contractual Maturity Date (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4548">Cash, Cash Equivalents and Investments - Summary of Available-for-sale Securities&#039; Fair Value and Gross Unrealized Losses (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4549">Cash, Cash Equivalents and Investments - Narrative (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4550">Fair Value - Schedule of Fair Value of Financial Assets and Liabilities Inputs (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4551">Fair Value - Narrative (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4552">Commitments and Contingencies - Narrative (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4553">Assets and Liabilities Held for Sale - Narrative (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4554">Assets and Liabilities Held for Sale - Schedule of Information on Assets Held for Sale (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4555">Goodwill and Intangible Assets - Narrative (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4556">Goodwill and Intangible Assets - Schedule of Changes in the Carrying Amount of Goodwill (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4557">Goodwill and Intangible Assets - Summary of Gross Carrying Amounts and Accumulated Amortization of Intangible Assets (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4558">Goodwill and Intangible Assets - Schedule of Future Amortization Expense Related to Finite-lived Intangible Assets (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4559">Debt Instruments - Schedule of Long-Term Debt (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4560">Debt Instruments - Convertible Debt Offering (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4561">Debt Instruments - Summary of the Effective Interest Rate, Contractually Stated Interest Expense and Costs Related to Amortization of Discount for the Notes (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4562">Debt Instruments - Credit Facility (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4563">Redeemable Convertible Preferred Stock - Narrative (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4564">Redeemable Convertible Preferred Stock - Schedule of Redeemable Convertible Preferred Stock (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4565">Stock-based Compensation Plans and Awards - ESPP narrative (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4566">Stock-based Compensation Plans and Awards - Schedule of Assumptions Used for Determining the Per-Share Fair Value (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4567">Stock-based Compensation Plans and Awards - Stock options narrative (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4568">Stock-based Compensation Plans and Awards - RSUs Narrative (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4569">Stock-based Compensation Plans and Awards - MSUs Narrative (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4570">Stock-based Compensation Plans and Awards - PSUs Narrative (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4571">Stock-based Compensation Plans and Awards - Schedule of Stock-Based Compensation Expenses Related to All Employee and Non-employee Stock-based Awards (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4572">Net Loss Per Common Share - Schedule of the Computation of Historical Basic and Diluted Net Loss Per Share (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4573">Net Loss Per Common Share - Schedule of Potential Common Shares Outstanding Excluded from the Computation of Diluted Net Loss Per Share (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4574">Net Loss Per Common Share - Narrative (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4575">Segment Data and Revenue by Geographic Area - Narrative (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4576">Segment Data and Revenue by Geographic Area - Schedule of Reportable Segments Information (Details)</a></li>
                                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/4577">Restructuring Charges (Details)</a></li>
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                <h4>Condensed Consolidated Balance Sheets (Parenthetical)</h4>
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