Chip index breaks below its 200-day average as BTIG warns rebounds may fade

A rebound in semiconductor stocks may offer less reassurance than investors hope. The PHLX Semiconductor Index closed below its 200-day moving average on Friday for the first time since May 2025. BTIG’s historical analysis shows that similar breaks sometimes preceded strong bounces, but gains were less common by the 50-trading-day mark.

The index, known as the SOX, stood roughly 40% below its June 22 high, according to BTIG. CNBC’s November 9 coverage placed the break against broad selling in semiconductor and AI stocks, as investors questioned whether enormous data-center investments would generate enough returns to justify their cost.

The bounce and the recovery are different tests

BTIG examined comparable breaks going back to 1995. The average path was not a straight decline: the SOX lost 0.8% over the next five trading days, then showed an average gain of 4.25% after 10 days. That leaves room for a substantial short-term rally even after the longer-term trend has weakened.

The average gains were smaller at later checkpoints: 3.09% after 20 trading days, 2.95% after 30 days and 0.77% after 40 days. By day 50, the index was above its starting level in only 44% of cases. A strong early bounce therefore did not translate into reliably positive results further out.

+4.25%Average return after 10 trading days

Comparable breaks since 1995 produced an average gain of 4.25% at the 10-day checkpoint.

44%Cases higher after 50 trading days

Fewer than half of the comparable cases ended with the index higher at the 50-day checkpoint.

Those figures answer different questions. The 10-day number measures the average size of the move; the 50-day figure measures how often the index finished higher. Neither promises the outcome of this break. Jonathan Krinsky, BTIG’s chief market technician, described the historical prospect of a bounce as essentially a coin toss in his Sunday note.

Six months of purchases hang over a rebound

Krinsky’s caution was not simply a call to keep betting on immediate losses. He said it was somewhat late to press short-term downside bets at current prices. His bigger concern was the position of investors who bought semiconductor stocks between May and October: those buyers were now sitting on losses, he said.

He described that as six months of overhead supply—a backlog of purchases above current prices that, in his view, would be difficult for the market to overcome soon. The argument shifts attention from whether stocks can bounce to how much buying would be needed to work through that overhang.

BTIG’s downside reference point is the index’s April breakout area of 8,000–8,300. Krinsky said a return there remained necessary to fully reverse the subsequent rapid advance. That is his technical assessment, not a scheduled destination or a forecast derived directly from the historical averages.