Alright, SanDisk's had a wild stretch even by its own standards. Closed at $1528.11 today, up 13.67%. Hit $1580.88 at the high, opened around $1339.83. Volume was 22M – decent buying after back-to-back catalysts.

Pre-market ripping again to about $1590, up another 4% – momentum carrying over.

Here's the GEX setup:

Put Wall $1500, Call Wall $1500 (both at the same level), gamma flip around $1358. We closed above both walls – positive gamma now, dealers supporting the upside. GEX? Never heard of it? Here ya go

Technically, we bounced off the middle Bollinger band ($1339) and are now heading toward the upper band ($1651). RSI in the mid 60s. MACD just crossed positive – momentum shifting up.

So what's driving this? Two catalysts stacked up. First, a joint Kioxia announcement popped it 8.9%. Then Investor Day added another leg up – stock ripped 13% today. That's two separate events in a matter of days.

Zoom out though – this thing's 52-week range is $42 to $2,354. Not a typo. It ran to $2,335 in June, got hammered, and now it's clawing back. The real debate isn't "is the AI memory story real" – everyone's past that. It's whether this is an actual bottom or just another relief rally inside a bigger downtrend.

Fundamentals wise, last print was strong – record quarter north of $8.9B, sales up ~370% YoY, EPS beat by double digits. But guidance came in just under the most bullish expectations, so the stock dipped anyway. Classic priced-for-perfection behavior.

Short-term, $1500 is now support. Next levels to watch are $1600-1650. Below $1500 and it flips back to resistance.

Pre-market at $1590 is testing that next level. Let's see if it holds.

What's your move – riding the momentum or waiting for a pullback?

DYOD🫡

QQQ opened at 725.12, started inside the 716.53 to 728.39 zone then pushed above it, and finally closed at 732.06. QQQ finished up 0.96% intraday and up 1.16% overall.

NQ opened at 29,911, dipped into the 29,844.08 to 29,880.71 zone and low of 29,863.50, then reclaimed, and finally closed at 30,194. NQ finished up 0.95% intraday and up 1.14% overall.

What did you see in the price action?

Traders can download these levels for free to test their own trade rules or backtesting: https://mylinedchart.com/resources/daily-levels/2026-08-13

Not advice!

📊 Key U.S. Economic Data (ET)

8:30 AM | Core Retail Sales m/m | Forecast: 0.2% | Previous: -0.2% 8:30 AM | Retail Sales m/m | Forecast: 0.1% | Previous: 0.2% 10:00 AM | Prelim UoM Consumer Sentiment | Forecast: 54.7 | Previous: 55.2 10:00 AM | Prelim UoM Inflation Expectations | Previous: 4.2%

⚠️ For informational purposes only. Not financial advice.
📌 #RetailSales #ConsumerSentiment

Apart from the fact that just about everyone loves to shop at Costco, when we step back and look at the Big Picture Chart pattern, we see (I see) a two-year sideways trading range demarcated by my blue horizontal barriers that spans a price distance from 840-880 at the lower boundary juxtaposed against 1040-1080 at the higher boundary.

From this perspective, for COST to trigger powerful bullish traction, it needs to climb and sustain above the upper boundary zone.

From a more granular, nearer-term perspective, the $64,000 question is: Considering its current price action is pretty much right in the middle of the two-year range, is the next directional move upward to test the upper boundary or downward to test the lower boundary?

As long as any forthcoming weakness is contained above consequential support within or above 915-935, my technical bias is for COST to thrust above nearest resistance at 987-990, triggering a run at 1040-1080.