Are SNDK and WDC correlated?

SNDK and WDC have a 252-day pairwise correlation of 0.73 (tight). Values above 0.6 indicate the two stocks tend to move together as part of the same capital flow; below 0.4 they're largely independent.

Do SNDK and WDC share any ETFs?

Yes - 2 ETFs hold both SNDK and WDC, including DRAM, IGV.

Which bubbles or themes do SNDK and WDC share?

SNDK and WDC share these AI-supercycle groupings: DRAM / HBM Memory (bubble).

Stock comparison

SNDK vs WDC

SanDisk Corporation and Western Digital Corporation - both members of DRAM / HBM Memory.

SNDKUS

SanDisk Corporation

Last close: $1753.62
Market cap: $256.8B
Sector: Information Technology
30d return: +30.4%
90d return: +27.0%
252d return: -

WDCUS

Western Digital Corporation

Last close: $450.31
Market cap: $162.4B
Sector: Information Technology
30d return: -0.8%
90d return: -5.4%
252d return: -

252-day correlation

0.73tight

Pearson correlation of daily log-returns over the last 252 trading days. >0.6 = tight (move as one bloc); 0.4-0.6 = thematic linkage;<0.4 = largely independent. See the full matrix.

Shared context

Bubbles

DRAM / HBM Memory

ETFs (2)

DRAM IGV

Want the full picture? SNDK stock page · WDC stock page · full correlation matrix

Data refreshes daily. Last close 2026-09-24.