Fresh highs are bullish, but parabolic moves are where risk and reward start to diverge.
The memory story is fundamentally stronger than it was in previous cycles. AI training clusters and inference workloads are driving demand for high-bandwidth memory, benefiting companies such as Micron Technology and Sandisk. Unlike past DRAM booms driven mainly by PCs and smartphones, AI data centres are creating a new source of demand.
That said, markets rarely move in a straight line. A stock making new highs after a 10% single-day surge often attracts momentum traders, making the trade increasingly crowded. When expectations become extreme, even good results can trigger profit-taking.
If you're already long, holding or trimming into strength is easier to justify than chasing. If you're underweight, waiting for a pullback or consolidation may offer a better risk-reward entry than buying after a euphoric breakout.
The biggest question is whether this is the start of a multi-year AI memory super-cycle or merely another cyclical peak. If the former, dips may prove shallow. If the latter, the stocks are likely discounting much of the good news already. For now, the trend remains up, but the margin for disappointment is shrinking.
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