Maintain BRK-B at current levels as the $521.80 entry presents unfavorable risk/reward given RSI 70.12, forward P/E 24.19, and halted buybacks ($0 in 2025 vs $9.2B in 2023), though structural quality remains compelling with TTM P/E 15.54, $373B cash, and 0.607 beta that justifies continued ownership. Post-earnings re-engagement is targeted at $505-510 on constructive cash/buyback disclosure, with a 50-75% sizing approach aligned to the 10-EMA retest.