Sandisk Gaps 16% Higher as Call Buyers Bet on Flash Stock Rebound

Sandisk Corporation (NASDAQ: SNDK) gapped 16% above its four-day base on November 11, with 79% of the session's options premium — $146.0 million of $184.8 million total — in calls, according to options flow data tracked by GTA Terminal as of 11:45 AM ET.

The move is a technical rebound, not a trend reversal. The stock, trading near $1,000 at midday, still sits below every major daily moving average. The 20-day simple moving average stands at $1,168.95, the 50-day at $1,467.55, the 100-day at $1,522.55 and the 200-day at $1,278.76. The downtrend traces back to a slide from the 60-day high of $1,909.48.

What Did the Gap Look Like?

Today's session opened at $928.24, well above the prior four-day range of $803.97 to $914.82. The intraday high reached $1,011.05, just shy of the November 4 low at $1,014.00. That level now acts as first resistance.

Momentum is turning. The 14-period RSI reads 38.6, recovering after a dip toward oversold territory. Volume so far runs at 0.95 times the 20-day average — participation is normal, not exceptional.

Who Is Buying What?

The options tape shows aggressive call positioning paired with a large downside hedge. The put/call volume ratio sits at 0.52, and 58 strikes traded above their existing open interest, signaling fresh positioning rather than existing positions unwinding.

The standout prints:

• Nov 13 $980 calls: 1,509 contracts traded versus open interest of 486, $6.5 million in premium
• Nov 13 $975 calls: 1,305 contracts versus 309 open interest, $6.3 million in premium
• Nov 20 $970 puts: 1,847 contracts versus 146 open interest, $8.7 million in premium — the hedge side of the flow

The near-dated call strikes, expiring two days out, dominate the bullish side. The put activity sits a week further out, consistent with traders protecting a long position against a failed breakout.

What Are the Dark Pools Doing?

Off-exchange activity ran hot on November 10. Dark pool volume reached 6,674,691 shares, or 48.8% of total volume, above the stock's normal level. Elevated block activity preceding a 16% gap often signals institutional accumulation through venues that hide price until execution.

What Levels Decide the Trade?

The setup resolves at four prices, per GTA Terminal's framework:

• $1,168.95 — the 20-day SMA, the main upside target
• $1,014.00 — the November 4 low, first resistance
• $914.82 — top of the four-day base, gap support
• $803.97 — the November 5 low and 60-day low, the invalidation point

A close through $1,014.00 with call premium still building would confirm the bullish read and open the path to the 20-day SMA at $1,168.95. A move back under $914.82 fills the gap and weakens the setup. Below $803.97, the base is broken and the rebound thesis fails.

For a semiconductor memory name still trading 47% below its 60-day high, the next session's close relative to $1,014.00 will determine whether the call flow was prescient or premature.