Western Digital Slides as Investors React to New HDD Capacity Threat

Western Digital (WDC) is down 10.3% today. Here is some analysis on what might have caused this price movement.

Analysis: The most likely catalyst is a fresh competitive shock in the hard disk drive market after a report that Toshiba plans a major capacity expansion for AI-focused data center drives. Investors appear to be pricing in the risk that added industry supply could weaken Western Digital’s pricing power, margins, or future market share after a strong run in storage-related stocks this year.

Details:

A report circulating Friday said Toshiba plans to invest about 60 billion yen to expand hard disk drive production in the Philippines and roughly double capacity by fiscal 2027.

The expansion is aimed at AI data center demand, the same market that has been helping support bullish expectations for Western Digital’s nearline storage business.

Western Digital’s latest quarterly release showed strong momentum, including 44% year-over-year revenue growth in fiscal Q4 2026 and Q1 fiscal 2027 revenue guidance of about $4.1 billion, suggesting today’s selloff is more about future competitive pressure than a newly disclosed operational setback.

This could also be because traders are reassessing whether tight HDD supply will remain a tailwind if a third major manufacturer becomes more aggressive in capacity and share expansion.

Sources:

Nikkei Asia, Western Digital, SEC

Disclaimer: This price movement analysis was generated with the help of AI. Please double-check the information provided for mistakes.

$WDC Insider Trading Activity

$WDC insiders have traded $WDC stock on the open market 110 times in the past 6 months. Of those trades, 0 have been purchases and 110 have been sales.

Here’s a breakdown of recent trading of $WDC stock by insiders over the last 6 months:

IRVING TAN (Chief Executive Officer) has made 0 purchases and 16 sales selling 40,000 shares for an estimated $17,136,193.
VIDYADHARA K GUBBI (Chief of Global Operations) has made 0 purchases and 3 sales selling 8,944 shares for an estimated $4,273,613.
MARTIN I COLE has made 0 purchases and 76 sales selling 8,000 shares for an estimated $3,859,881.
STEPHANIE A STREETER has made 0 purchases and 3 sales selling 5,600 shares for an estimated $2,519,280.
CYNTHIA L TREGILLIS (Chief Legal Officer & Corp Sec) has made 0 purchases and 11 sales selling 5,065 shares for an estimated $2,423,673.
BRUCE E KIDDOO sold 750 shares for an estimated $396,390

To track insider transactions, check out Quiver Quantitative's insider trading dashboard. You can access data on insider stock transactions through the Quiver Quantitative API insider transaction endpoint.

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$WDC Hedge Fund Activity

We have seen 1,076 institutional investors add shares of $WDC stock to their portfolio, and 669 decrease their positions in their most recent quarter.

Here are some of the largest recent moves:

JPMORGAN CHASE & CO added 17,007,789 shares (+inf%) to their portfolio in Q2 2026, for an estimated $10,863,214,990
INVESCO LTD. added 8,904,877 shares (+161.0%) to their portfolio in Q2 2026, for an estimated $5,687,723,037
FMR LLC removed 5,639,773 shares (-17.8%) from their portfolio in Q2 2026, for an estimated $3,602,235,810
WCM INVESTMENT MANAGEMENT, LLC removed 4,929,689 shares (-75.1%) from their portfolio in Q2 2026, for an estimated $3,148,690,958
CAPITAL WORLD INVESTORS added 4,718,173 shares (+39.7%) to their portfolio in Q2 2026, for an estimated $3,013,591,458
D. E. SHAW & CO., INC. removed 3,799,531 shares (-66.6%) from their portfolio in Q2 2026, for an estimated $2,426,836,440
UBS GROUP AG removed 2,923,969 shares (-69.9%) from their portfolio in Q2 2026, for an estimated $1,867,597,479

To track hedge funds' stock portfolios, check out Quiver Quantitative's institutional holdings dashboard. You can access data on hedge funds moves and 13F filings through the Quiver Quantitative API 13F endpoint.

$WDC Congressional Stock Trading

Members of Congress have traded $WDC stock 1 times in the past 6 months. Of those trades, 1 have been purchases and 0 have been sales.

Here’s a breakdown of recent trading of $WDC stock by members of Congress over the last 6 months:

REPRESENTATIVE GILBERT RAY CISNEROS, JR. purchased up to $15,000 on 07/17.

To track congressional stock trading, check out Quiver Quantitative's congressional trading dashboard. You can access data on congressional stock trades through the Quiver Quantitative API Congress trades endpoint.

$WDC Analyst Ratings

Wall Street analysts have issued reports on $WDC in the last several months. We have seen 1 firms issue buy ratings on the stock, and 0 firms issue sell ratings.

Here are some recent analyst ratings:

Rosenblatt issued a "Buy" rating on 05/01/2026

To track analyst ratings and price targets for $WDC, check out Quiver Quantitative's $WDC forecast page.

$WDC Price Targets

Multiple analysts have issued price targets for $WDC recently. We have seen 14 analysts offer price targets for $WDC in the last 6 months, with a median target of $597.5.

Here are some recent targets:

Mehdi Hosseini from Susquehanna set a target price of $500.0 on 07/08/2026
Wamsi Mohan from B of A Securities set a target price of $732.0 on 07/01/2026
C.J. Muse from Cantor Fitzgerald set a target price of $900.0 on 06/29/2026
Erik Woodring from Morgan Stanley set a target price of $650.0 on 06/15/2026
Harlan Sur from JP Morgan set a target price of $650.0 on 06/12/2026
Vijay Rakesh from Mizuho set a target price of $685.0 on 06/08/2026
Asiya Merchant from Citigroup set a target price of $685.0 on 06/02/2026

This article is not financial advice. See Quiver Quantitative's disclaimers for more information. Note that there may be inaccuracies due to mistakes in ticker-mapping, and other anomalies.