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Why did Sandisk (SNDK) stock go down on Oct 16, 2026?

Updated ยท Data: Nasdaq daily prices through Oct 16, 2026 close; SEC EDGAR

Quick answer

Sandisk (SNDK) fell 6.8% to $1,299.30 on Friday, Oct 16, 2026, on 0.8x its 50-day average volume. There was no new SEC filing from the company in the five days up to the session, so the filing record does not explain the move.

Close (Oct 16, 2026)$1,299.30
Change-6.8%
Volume vs 50-day avg0.8x
From 52-week high-44.8%

What the data shows about the move

SNDK move in numbers

MetricValue
Close$1,299.30
Previous close$1,394.83
Change ($)-$95.53
Change (%)-6.85%
Day high / low$1,362.35 / $1,296.19
Volume8,954,661
50-day average volume10,915,518
52-week high / low$2,354.39 / $136.29
Above 52-week low+853.3%
50-day average price$1,593.05
200-day average price$1,210.71

Last 10 sessions

DateCloseChangeVolume
Oct 16, 2026$1,299.30-6.85%8,954,661
Oct 15, 2026$1,394.83-0.61%13,279,790
Oct 14, 2026$1,403.34-5.33%7,458,803
Oct 13, 2026$1,482.33-0.34%8,400,262
Oct 12, 2026$1,487.33-5.97%8,803,866
Oct 9, 2026$1,581.82-1.72%5,606,795
Oct 8, 2026$1,609.46-4.90%9,357,012
Oct 7, 2026$1,692.42+1.92%9,166,860
Oct 6, 2026$1,660.46-2.56%6,529,678
Oct 5, 2026$1,704.16-0.92%6,502,465

Peers in Electronic Components

CompanyClose Oct 16, 2026Change
KLAC KLA$165.74-5.00%
STX Seagate Technology Holdings$639.01-7.50%
WDC Western Digital$332.00-6.86%

Bull vs bear points from the data

Bull points

  • Above its 200-day average ($1,210.71), the long-term trend line.

Bear points

  • Closed below its 50-day average price ($1,593.05).
  • Still 44.8% below its 52-week high of $2,354.39.
  • Down 17.9% over the last five sessions.

Points are computed from price, volume and filing data only; they are not forecasts or recommendations.

Latest SEC filings for SNDK

FormFiledDetailLink
DEF 14AOct 6, 2026DEFINITIVE PROXY STATEMENTEDGAR
4Oct 2, 2026PRIMARY DOCUMENTEDGAR
4Sep 21, 2026PRIMARY DOCUMENTEDGAR
4Sep 21, 2026PRIMARY DOCUMENTEDGAR
4Sep 21, 2026PRIMARY DOCUMENTEDGAR
4Sep 21, 2026PRIMARY DOCUMENTEDGAR

For the full picture, including financials from SEC filings and insider trades, see our SNDK stock analysis.

Sources

  1. SEC EDGAR: Sandisk Form DEF 14A filing index (filed Oct 6, 2026)
  2. SEC EDGAR: Sandisk Form 4 filing index (filed Oct 2, 2026)
  3. SEC EDGAR: Sandisk Form 4 filing index (filed Sep 21, 2026)
  4. SEC EDGAR: Sandisk Form 4 filing index (filed Sep 21, 2026)
  5. SEC EDGAR: Sandisk Form 4 filing index (filed Sep 21, 2026)
  6. SEC EDGAR: Sandisk Form 4 filing index (filed Sep 21, 2026)
  7. Nasdaq: SNDK historical prices and volume (daily data through Oct 16, 2026 close, retrieved Oct 19, 2026)
  8. Nasdaq: KLAC historical prices (peer) (Oct 16, 2026 close)
  9. Nasdaq: STX historical prices (peer) (Oct 16, 2026 close)
  10. Nasdaq: WDC historical prices (peer) (Oct 16, 2026 close)
  11. Nasdaq: SNDK earnings date (retrieved Oct 19, 2026)