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Company research · RAM

Western Digital Corporation

NASDAQ:WDC

Computer Peripherals · attribution context sourced from stored price moves, stored event labels, and peer-relative residuals inside the RAM constituent company universe.

Open overview Open coverage audit Back to ETF companies

Attribution backlog

13high-priority unexplained moves

Market cap191.9B

Last close567.75

1M return+6.70%

Stored moves35

Stored price tapeDaily OHLC candles

+1.99%

Full history and event labels

May 14, 5:30 AM O 503.32 H 503.66 L 475.37 C 494.09 V 5772757, May 14, 9:30 PM O 484.755 H 507.97 L 480.34 C 489.15 V 5540875, May 15, 5:30 AM O 484.755 H 507.97 L 480.34 C 489.15 V 5540875, May 15, 9:30 PM O 470.75 H 486.41 L 465 C 482.02 V 7014406, May 16, 5:30 AM O 470.75 H 486.41 L 465 C 482.02 V 7014406, May 18, 9:30 PM O 485.335 H 487 L 441.67 C 458.68 V 8996656, May 19, 5:30 AM O 485.335 H 487 L 441.67 C 458.68 V 8996656, May 19, 9:30 PM O 441.7 H 464.23 L 434 C 455.8 V 5891596, May 20, 5:30 AM O 441.7 H 464.23 L 434 C 455.8 V 5891596, May 20, 9:30 PM O 469.375 H 469.65 L 456.18 C 459.62 V 5311721, May 21, 5:30 AM O 469.375 H 469.65 L 456.18 C 459.62 V 5311721, May 21, 9:30 PM O 458.925 H 487.29 L 458.87 C 486.46 V 5046838, May 22, 5:30 AM O 458.925 H 487.29 L 458.87 C 486.46 V 5046838, May 22, 9:30 PM O 488.43 H 489.99 L 478.5495 C 484.28 V 4492768, May 23, 5:30 AM O 488.43 H 489.99 L 478.5495 C 484.28 V 4492768, May 26, 9:30 PM O 504.83 H 536.12 L 500.5001 C 524.65 V 7552532, May 27, 5:30 AM O 504.83 H 536.12 L 500.5001 C 524.65 V 7552532, May 27, 9:30 PM O 538.97 H 546.68 L 521.7 C 530.6 V 6271303, May 28, 9:30 PM O 540.505 H 553.5 L 527.43 C 531.18 V 6002841, May 29, 9:30 PM O 542.3 H 544.26 L 518.6801 C 531.21 V 8391544, Jun 1, 9:30 PM O 536 H 564.14 L 534.265 C 546.2 V 6240917, Jun 2, 9:30 PM O 559 H 571.18 L 541 C 563.1 V 5029053, Jun 3, 9:30 PM O 571.25 H 602.5399 L 571.25 C 594.11 V 7846060, Jun 4, 9:30 PM O 566.01 H 594 L 564.56 C 575.5 V 6488172, Jun 5, 9:30 PM O 545.25 H 554.155 L 511.33 C 511.72 V 9009200, Jun 8, 9:30 PM O 540.21 H 540.21 L 519.05 C 526.93 V 6226269, Jun 9, 9:30 PM O 535.5 H 545.41 L 480.87 C 517.72 V 7278666, Jun 10, 9:30 PM O 502.7 H 515.22 L 484.5 C 490.09 V 5978302, Jun 11, 9:30 PM O 497.77 H 529.72 L 489 C 529.29 V 6334605, Jun 12, 9:30 PM O 541.99 H 572.29 L 531.9601 C 562.925 V 6291421, Jun 15, 9:30 PM O 618.78 H 658.8 L 612 C 653.53 V 9522884, Jun 16, 9:30 PM O 686.775 H 729.92 L 667.35 C 681.08 V 15860106, Jun 17, 9:30 PM O 695.475 H 741.85 L 694.12 C 712.13 V 13569067, Jun 18, 9:30 PM O 764.15 H 799.87 L 739.1101 C 746.23 V 16683882, Jun 22, 9:30 PM O 772.75 H 779.8 L 726.6 C 732.62 V 13160102, Jun 23, 9:30 PM O 665.21 H 682.5299 L 653 C 670.75 V 12684428, Jun 24, 9:30 PM O 658.46 H 665 L 612.41 C 643.83 V 12214391, Jun 25, 9:30 PM O 729 H 729 L 658.5 C 675.39 V 11748542, Jun 26, 9:30 PM O 643.145 H 647.42 L 579.51 C 586.45 V 23404387, Jun 27, 5:30 AM O 643.145 H 647.42 L 579.51 C 586.45 V 23404387, Jun 29, 9:30 PM O 600.56 H 652.98 L 590 C 651.88 V 11268871, Jun 30, 5:30 AM O 600.56 H 652.98 L 590 C 651.88 V 11268871, Jun 30, 9:30 PM O 632.44 H 663.98 L 630.3 C 638.72 V 9277293, Jul 1, 5:30 AM O 632.44 H 663.98 L 630.3 C 638.72 V 9277293, Jul 1, 9:30 PM O 604.555 H 617.39 L 585.8 C 598.37 V 7934200, Jul 2, 5:30 AM O 604.555 H 617.39 L 585.8 C 598.37 V 7934200, Jul 2, 9:30 PM O 595.5 H 609.465 L 525.84 C 539 V 8956328, Jul 3, 5:30 AM O 595.5 H 609.465 L 525.84 C 539 V 8956328, Jul 6, 9:30 PM O 567 H 601 L 563.61 C 577.46 V 7600688, Jul 7, 5:30 AM O 567 H 601 L 563.61 C 577.46 V 7600688, Jul 7, 9:30 PM O 532.395 H 550 L 510.37 C 532.1 V 7993468, Jul 8, 5:30 AM O 532.395 H 550 L 510.37 C 532.1 V 7993468, Jul 8, 9:30 PM O 526 H 562.76 L 526 C 550.3 V 6870027, Jul 9, 5:30 AM O 526 H 562.76 L 526 C 550.3 V 6870027, Jul 9, 9:30 PM O 594.14 H 601.5 L 574.0001 C 578.05 V 6868543, Jul 10, 5:30 AM O 594.14 H 601.5 L 574.0001 C 578.05 V 6868543, Jul 10, 9:30 PM O 563.995 H 585.2 L 562.76 C 582.585 V 4814144, Jul 11, 5:30 AM O 563.995 H 585.2 L 562.76 C 582.585 V 4814144, Jul 13, 9:30 PM O 551.665 H 559.99 L 532.16 C 555.55 V 4780792, Jul 14, 5:30 AM O 551.665 H 559.99 L 532.16 C 555.55 V 4780792, Jul 14, 9:30 PM O 587.65 H 589.65 L 559.11 C 563.32 V 5293195, Jul 15, 5:30 AM O 587.65 H 589.65 L 559.11 C 563.32 V 5293195, Jul 15, 9:30 PM O 562.64 H 569.35 L 496.5 C 513.84 V 7926865, Jul 16, 5:30 AM O 562.64 H 569.35 L 496.5 C 513.84 V 7926865, Jul 16, 9:30 PM O 486.68 H 498.72 L 453.94 C 466.81 V 10527005, Jul 17, 5:30 AM O 486.68 H 498.72 L 453.94 C 466.81 V 10527005, Jul 17, 9:30 PM O 451.13 H 492.93 L 430.5215 C 477.22 V 11777119, Jul 18, 5:30 AM O 451.13 H 492.93 L 430.5215 C 477.22 V 11777119, Jul 20, 9:30 PM O 491.36 H 505.99 L 485.28 C 487.42 V 5403477, Jul 21, 9:30 PM O 528.81 H 553.625 L 517.01 C 548.39 V 7449142, Jul 22, 9:30 PM O 525.74 H 564.43 L 525.0182 C 556.67 V 5435035, Jul 23, 9:30 PM O 555.72 H 569 L 555.72 C 567.75 V 340132

From high -23.92%Drawdown -75.16%Stored labels 148

Price move attribution

Large moves, explained residuals, and research gaps

35 stored large-move attributions

High-priority unexplained moves13Open moves where direct company catalyst evidence is missing or weak.

Direct labels17Company-specific filings, disclosures, earnings, guidance, or direct source links.

Theme driver days0Moves benchmarked against a matched thematic basket before peer residuals.

Review workbench

High-priority unexplained moves

8 shown

Aug 6, 2020

No relevant stored event for down moveNo relevant stored event label passed the company move-attribution threshold for this -16.12% daily move. · Unexplained High Priority · generated

Move -16.12%Macro / market +0.08%Sector after macro -0.16%Industry after sector +0.17%Residual after context -16.21%

Review priority 96 · Source rank 0 · Volume 7.5x

Source gap missing_direct_company_catalyst · Next action research_company_specific_news

Decomposition: Macro +0.08% · Sector -0.16% · Industry +0.17% · Peer Specific +0.00% · Company Catalyst +0.00% · Unexplained Residual -16.21%

Oct 31, 2019

No relevant stored event for down moveNo relevant stored event label passed the company move-attribution threshold for this -16.91% daily move. · Unexplained High Priority · generated

Move -16.91%Macro / market -0.31%Sector after macro -0.19%Industry after sector -0.71%Residual after context -15.70%

Review priority 95 · Source rank 0 · Volume 6.9x

Source gap missing_direct_company_catalyst · Next action research_company_specific_news

Decomposition: Macro -0.31% · Sector -0.19% · Industry -0.71% · Peer Specific +0.00% · Company Catalyst +0.00% · Unexplained Residual -15.70%

May 3, 2022

No relevant stored event for up moveNo relevant stored event label passed the company move-attribution threshold for this +14.47% daily move. · Unexplained High Priority · generated

Move +14.47%Macro / market +0.28%Sector after macro +0.69%Industry after sector -1.56%Residual after context +15.06%

Review priority 93 · Source rank 0 · Volume 5.1x

Source gap missing_direct_company_catalyst · Next action research_company_specific_news

Decomposition: Macro +0.28% · Sector +0.69% · Industry -1.56% · Peer Specific +0.00% · Company Catalyst +0.00% · Unexplained Residual +15.06%

Mar 23, 2020

No relevant stored event for up moveNo relevant stored event label passed the company move-attribution threshold for this +10.69% daily move. · Unexplained High Priority · generated

Move +10.69%Macro / market -1.40%Sector after macro -3.06%Industry after sector -3.42%Residual after context +18.57%

Review priority 91 · Source rank 0 · Volume 1.5x

Source gap missing_direct_company_catalyst · Next action research_company_specific_news

Decomposition: Macro -1.40% · Sector -3.06% · Industry -3.42% · Peer Specific +0.00% · Company Catalyst +0.00% · Unexplained Residual +18.57%

Dec 31, 2020

No relevant stored event for up moveNo relevant stored event label passed the company move-attribution threshold for this +11.83% daily move. · Unexplained High Priority · generated

Move +11.83%Macro / market +0.51%Sector after macro +0.10%Industry after sector -1.04%Residual after context +12.26%

Review priority 86 · Source rank 0 · Volume 3.9x

Source gap missing_direct_company_catalyst · Next action research_company_specific_news

Decomposition: Macro +0.51% · Sector +0.10% · Industry -1.04% · Peer Specific +0.00% · Company Catalyst +0.00% · Unexplained Residual +12.26%

May 15, 2023

No relevant stored event for up moveNo relevant stored event label passed the company move-attribution threshold for this +11.26% daily move. · Unexplained High Priority · generated

Move +11.26%Macro / market +0.81%Sector after macro -0.04%Industry after sector -2.88%Residual after context +13.37%

Review priority 86 · Source rank 0 · Volume 3.1x

Source gap missing_direct_company_catalyst · Next action research_company_specific_news

Decomposition: Macro +0.81% · Sector -0.04% · Industry -2.88% · Peer Specific +0.00% · Company Catalyst +0.00% · Unexplained Residual +13.37%

Mar 16, 2020

Broad market moved -11.98% with this stockBroad market context explains -11.98 percentage points of the -20.44% daily move. Remaining company-specific residual is -15.27 percentage points and still needs direct catalyst coverage. · Context With Residual Review · macro

Move -20.44%Macro / market -11.98%Sector after macro +1.74%Industry after sector +5.06%Residual after context -15.27%

Review priority 84 · Source rank 54 · Volume 1.6x

Source gap missing_direct_company_catalyst · Next action research_company_specific_news

Decomposition: Macro -11.98% · Sector +1.74% · Industry +5.06% · Peer Specific +0.00% · Company Catalyst +0.00% · Unexplained Residual -15.27%

Jan 6, 2026

No relevant stored event for up moveNo relevant stored event label passed the company move-attribution threshold for this +16.77% daily move. · Unexplained High Priority · generated

Move +16.77%Macro / market +1.64%Sector after macro +0.39%Industry after sector +1.51%Residual after context +13.23%

Review priority 82 · Source rank 0 · Volume 2.3x

Source gap missing_direct_company_catalyst · Next action research_company_specific_news

Decomposition: Macro +1.64% · Sector +0.39% · Industry +1.51% · Peer Specific +0.00% · Company Catalyst +0.00% · Unexplained Residual +13.23%

Stored labels

Accepted price-move labels

10 shown

Date	Label	Move	Residual after context	Scope	Confidence
Mar 16, 2020	Broad market moved -11.98% with this stock	-20.44%	-15.27%	Macro	58%
Mar 18, 2020	Sector group moved -6.64% with this stock	-14.27%	-14.62%	Sector	58%
Apr 3, 2025	Closest peers moved -8.16% with this stock	-18.26%	-10.10%	Peer	58%
May 1, 2020	Sector group moved -4.28% with this stock	-12.15%	-8.04%	Sector	58%
Jun 26, 2026	Closest peers moved -3.41% with this stock	-13.17%	-9.76%	Peer	58%
Apr 6, 2020	Broad market moved +8.00% with this stock	+13.35%	+9.53%	Macro	58%
Mar 12, 2020	Broad market moved -9.13% with this stock	-13.36%	-6.97%	Macro	58%
Mar 24, 2020	Closest peers moved +15.56% with this stock	+17.75%	+2.19%	Peer	58%
Apr 9, 2025	NASDAQ:WDC 8-K current report items 7.01,9.01	+15.06%	-0.01%	Direct	94%
Apr 9, 2025	Western Digital Corporation 8-K: 8-K	+15.06%	-0.01%	Direct	70%