SanDisk (SNDK) S&P500 Inclusion Impact & Market Analysis

Nov24,2025 (Announcement), Nov28,2025 (Effective)

SanDisk (SNDK) was announced to join the S&P500 Index on Nov24,2025, replacing Interpublic Companies Group (IPG) (acquired by Omnicom). The inclusion took effect pre-market Nov28,2025 [3]. This follows SNDK’s Feb2025 spin-off from Western Digital [2] and is validated by strong AI-driven flash memory demand [1].

• Price: Nov24 +10.15% (index effect), Nov25 -3.46% (profit taking) [0].
• Volume: Nov20-25 volume (75.13M) was ~13x 200-day avg (5.6M) [0].

• Inclusion Benefits: Broader investor base, enhanced credibility, improved liquidity [1].
• Long-Term Trend: YTD +536.85% return (from $35.06 to $223.28) driven by AI demand [0].

• Short-Term: Mixed (profit taking post-rally).
• Long-Term: Positive (inclusion + AI demand) [1][0].

Metric	Value	Citation
YTD Return (Nov28)	+536.85%	[0]
Nov24 Gain	+10.15%	[0]
Nov25 Drop	-3.46%	[0]
200-Day Avg Volume	5.6M	[0]
Current Price (Nov28)	$223.28	[0]
20-Day MA	$231.19	[0]

• Direct: SNDK [0][1].
• Sectors: Technology (flash memory, AI storage) [1][2].
• Upstream/Downstream: Western Digital (WDC, spin-off parent [2]), data center operators [1].

1. Valuation metrics (P/E ratio, peer comparison to Micron/Samsung).
2. Full Q3 earnings details and Q22026 EPS guidance ($3-3.40 [1]) validation.
3. Exact index fund buying volume post-inclusion.

• Bullish: AI demand, S&P inclusion, triple-digit EPS growth [1][0].
• Bearish: High volatility (6.11% daily std dev [0]), price below 20-day MA (short-term pullback risk), overvaluation concerns [1].

• Volatility: 6.11% daily std dev indicates significant price swings [0].
• Overvaluation: 536% YTD gain suggests premium pricing [0][1].
• AI Dependence: Slowdown in AI spending could impact demand [1].

1. Q22026 earnings (guidance validation [1]).
2. AI data center investment trends.
3. Flash memory pricing dynamics.
4. Post-inclusion index fund flows.