Two Clocks Running: BYD Conditional Long Thesis Revised

This practitioner update note formally revises the BYD conditional long thesis established in Document 2 - Two Clocks Running (DOI: 10.5281/zenodo.20052025). Five material developments emerged after Document 2's publication that alter the risk architecture of the thesis. Three are negative signals. Two are positive. This note documents all five and updates the trigger monitoring framework accordingly. What has changed since Document 2: Document 2 framed the BYD conditional long as a two-variable thesis contingent on Hungary production ramp and price undertaking acceptance. Five developments have repriced all three variables: BYD Q1 2026 net profit declined 55.4% year-on-year. Government subsidies represented 38.2% of 2025 net profit, confirming a load-bearing subsidy dependency that introduces a third variable: government subsidy continuity. Berkshire Hathaway sold its entire BYD stake in September 2025, a 17-year investment generating a 3,890% return and did it before the Q1 2026 results were publicly disclosed. The sequencing is the operative signal. China's 14th Five-Year Plan (2026-2030) excluded NEVs from its strategic industry list for the first time in 15 years and this is the observable leading indicator for production subsidy reduction that was absent from Document 2. China's NEV purchase tax exemption has been halved to ¥15,000 per vehicle for 2026-2027 (already legislated), with full elimination by end-2027. MOFCOM reversed its collective bargaining stance in February 2026. The Commission accepted the first price undertaking from Volkswagen Anhui on February 10, 2026. Variable 2 has moved from unlikely to achievable - though BYD has not yet filed, facing a commercial tension between tariff relief and pricing flexibility. BYD is negotiating acquisition of Stellantis and other European manufacturing facilities (Bloomberg, May 13, 2026), adding a parallel EU manufacturing pathway alongside Hungary. Thesis verdict: The BYD conditional long is maintained as a three-variable thesis. The bear case has materially widened. The bull case has strengthened on Variable 2. The trigger monitoring framework has been updated with one new trigger (subsidy continuity) and one revised trigger (price undertaking). Primary audience: Hedge fund analysts running long/short positions on Chinese OEM EU exposure. PE and infrastructure fund analysts with BYD-correlated CPO asset exposure. Companion series: Document 1 - Unpriced (DOI: 10.5281/zenodo.20023903) · Document 2 - Two Clocks Running (DOI: 10.5281/zenodo.20052025) · Document 3 - The Sequencing Error (DOI: 10.5281/zenodo.20138084) · Document 4 - The Champion Selection Mechanism (forthcoming).