WD
WDC
-7.4%🟢 Fundamentally supportedWestern Digital Corp. · Technology
$358.20Vol 244.1K · 2.8× normalMkt cap −$10.76Bpre · 2026-10-13 ET
What happened
Move
-7.4%
Price
$358.20
Volume
244.1K
2.8× normal
Market cap
$134.08B
−$10.76B today
Why it moved
Analyst downgrademedium confidence
Possible catalyst: analyst downgrade, 7.0pp below its sector, on 2.8× normal volume.
Verdict — was the move justified?
🟢 Fundamentally supported
Analyst downgrade — direction and rough magnitude are consistent with the identified fundamental catalyst.
How unusual is this move
σ score
1.9σ
vs own 20d volatility
Percentile
95th
of 1274 daily moves
Avg daily move
±2.4%
own 5y average
vs sector
-7.0%
beyond sector median
Today’s move is among the largest 5% of WDC’s daily moves over the last 5 years — while the sector moved -0.5% and the market +0.0%.
What happened after similar moves
54 similar down moves in WDC’s 5-year history:
After 5 days
+2.6%
70% higher
After 20 days
+3.8%
63% higher
Median of same-direction moves within ±35% magnitude band. Past patterns don’t predict outcomes — context, not signal.
Fundamental context
V 15G 62P 100H 57Q 35EW 40/65
Valuation context
P/E (TTM)
21.4
5y median 15.5
P/E percentile
62%
vs own 3y history
FCF yield
0.0%
Valuation sits near the middle of its own historical range (62th percentile).
Full fundamental analysis on PreMarketPrice
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