Berkshire's Continued Buying Lifts SiriusXM Despite Prior Concerns

What happened

Greg Abel, Berkshire Hathaway's designated successor, has added another $27 million to Berkshire's position in SiriusXM, pushing the stock up 62% year-to-date with a 3.3% dividend yield. This purchase aligns with Berkshire's pattern of accumulating SIRI shares during periods of weakness, as previously noted when Berkshire raised its stake to 37% after a sell-off in August 2025. The latest DeepValue master report, dated February 2026, had rated SIRI a WAIT, citing negative self-pay net adds (-411k YTD through Q3 2025), rising subscriber acquisition costs ($19.37 per install), and a trial funnel that had declined to 7.4 million. However, the 62% price appreciation suggests the market is now pricing in a turnaround, likely driven by stabilizing churn at 1.6% and the impact of Howard Stern's contract extension. While Berkshire's continued buying signals confidence, the core operating metrics—self-pay net adds and SAC/install—must show measurable improvement to justify the higher valuation.

Implication

Berkshire's continued accumulation, now performed by Greg Abel, reinforces the view that a deep-pocketed, long-term investor sees value in SiriusXM despite its structural challenges. The stock's 62% rise this year implies a significant re-rating, moving it above the DeepValue report's base case of $22 and into the bull case territory of $30, which assumed positive self-pay net adds and a growing trial funnel. However, the report's warning remains: if subscriber losses persist or acquisition costs stay elevated, the stock may be overvalued at current levels. The 3.3% dividend yield provides some income support, but it is not sufficient to offset potential capital impairment if the business continues to erode. Therefore, investors should treat the Berkshire purchase as a positive signal but not as a substitute for verifying the operational turn using the next few quarters' subscriber and cost data.

Thesis delta

The thesis has shifted from WAIT (as of February 2026) to cautiously positive, given Berkshire's continued buying and the stock's strong performance. The DeepValue report's bull scenario—trial funnel growth, positive net adds, and stable churn—appears more plausible, but confirmation is needed from reported metrics. If the next earnings show self-pay net adds trending toward zero and SAC/install declining, the rating should move to BUY; otherwise, the recent rally may be premature.