WDC — WESTERN DIGITAL CORPToday's name, from the SEC's present-day ticker list — a present-day mapping, not the name as of each filing.

Congress trades
52
all time
Members · 12m
2
2 buys · 1 sells · by trade date
Latest filing
10-12
2026-10-12
Rows filed past the STOCK Act's 45-day window, stated on the row, never editorialised; both dates and the receipt stay on every row.
11
13F holders
1,186
top 500 listed · 2026-03-31
Congress: statutory ranges, filed up to 45 days after the trade · 13F: quarter-end snapshots, filed up to 45 days lateras of 2026-10-29

On Signals

ACTIVE HITS NAMING WDC · NEWEST FILED FIRST · EVERY HIT CARRIES ITS RECEIPTSignals ↗
Active signal hits naming WDC, newest filed first
KindWhoTraded → FiledSizeSrc
a disclosed trade in an issuer whose sector falls within a committee the member sat on as of the trade date (versioned mapping; membership dated) — context only: no legal, ethical, or causal conflict is established or impliedCisnerosTraded → Filed +24d$1.0K–$15.0K
a disclosed trade in an issuer whose sector falls within a committee the member sat on as of the trade date (versioned mapping; membership dated) — context only: no legal, ethical, or causal conflict is established or impliedCisnerosTraded → Filed +49d$1.0K–$15.0K

1–2 of 2 lines · 2 hits · each kind word opens its exact rule · every hit is in signals.v1.json.

COMMITTEE: Context, not an allegation.

Congress 52Institutional 500

Congress · disclosure timeline

By trade date · 24 months · 8 rows ▲ buy, ▼ sell; height = lower bound (log scale); ringed = on Signals. Trade date, not filing date — the filing lag is in the table below.

8 dated disclosures in the window, placed by trade date; magnitudes are the disclosed lower bounds, against gridlines at $15K, $250K, $5M; 2 ringed marks are lines of the Signals row above, pinned in the table below.

Members active in WDC

12 months · most active first Rows = number of disclosures, not dollars. Net = lower bound of the net range. Committees as of each member's latest trade in the window (roster snapshot 2026-10-29).
Members disclosing WDC in the trailing 12 months
MemberRowsNet disclosed flow for this ticker: purchases minus sales, computed as a net range on the disclosed amounts. A lower bound is provable, never a point.Number of committees the member sat on as of their latest trade date in the window, from the cc0-legislators roster snapshot. Context, never an allegation; jurisdiction overlap needs the sector join.
Gilbert Ray Cisneros, Jr. D–CA-312−$14.0K to $14.0K2
Alan Armstrong R–OK1$1.0K to $15.0K2

2 members

Congressional disclosures

Signals rows first, then newestAll 52 rows ↗
Latest congressional filings mentioning WDC, the rows on Signals first
FiledMemberSide · OwnerTraded · LagAmountRange · FlagsSrc
2026-10-12Gilbert Ray Cisneros, Jr. D–CA-31 On SignalsSELLTraded 09-18 +24d$1K–$15K
2026-09-04Gilbert Ray Cisneros, Jr. D–CA-31 On SignalsBUYTraded 07-17 LATE·49d$1K–$15K
2026-07-21Alan Armstrong R–OKBUYTraded 03-27 LATE·116d$1K–$15K
2025-06-22Jefferson Shreve R–IN-6SELLTraded 05-12 +41d$15K–$50K
2025-05-08Jefferson Shreve R–IN-6BUYTraded 04-17 +21d$15K–$50K
2025-05-08Robert P. Bresnahan, Jr. R–PA-8SELLTraded 04-11 +27d$1K–$15K
2025-05-08Robert P. Bresnahan, Jr. R–PA-8SELL partial (partial sale)Traded 04-10 +28d$1K–$15K
2025-04-11Jefferson Shreve R–IN-6SELLTraded 03-13 +29d$15K–$50K
2020-09-11Dean Phillips D–MN-3SELL partial (partial sale)Traded 08-10 +32d$1K–$15K
2020-07-10Susie Lee D–NV-3SELL partial · JT (partial sale, jointly owned)Traded 06-29 +11d$1K–$15K

13F holders · Quarter ended 2026-03-31Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt. · longs only

All holders ↗
Top institutional holders of WDC for quarter 2026-03-31, 1–25 of 1,186 holders
#FilerValueSecuritiesFlagsderived by Public Filings from this build's reviewed ticker-mapping holders list for this share class; that list carries each holder's share count, share change and filed date (the full holders view shows them), but no document links — the EDGAR link opens the filer's 13F list·§
1BlackRock, Inc.$9.7B1
derived ·§ EDGAR ↗
2FMR LLC$8.6B1
derived ·§ EDGAR ↗
3VANGUARD CAPITAL MANAGEMENT LLC$6.0B1
derived ·§ EDGAR ↗
4VANGUARD PORTFOLIO MANAGEMENT LLC$4.6B1
derived ·§ EDGAR ↗
5JPMORGAN CHASE & CO$4.4B1
derived ·§ EDGAR ↗
6STATE STREET CORP$4.2B1
derived ·§ EDGAR ↗
7Capital World Investors$3.2B1
derived ·§ EDGAR ↗
8GEODE CAPITAL MANAGEMENT, LLC$2.6B1
derived ·§ EDGAR ↗
9BANK OF AMERICA CORP /DE/$2.3B1
derived ·§ EDGAR ↗
10MORGAN STANLEY$2.1B1
derived ·§ EDGAR ↗
11WCM INVESTMENT MANAGEMENT, LLC$1.7B1
derived ·§ EDGAR ↗
12AMERIPRISE FINANCIAL INC$1.6B1
derived ·§ EDGAR ↗
13Invesco Ltd.$1.5B1
derived ·§ EDGAR ↗
14UBS Group AG$1.1B1
derived ·§ EDGAR ↗
15NORTHERN TRUST CORP$976M1
derived ·§ EDGAR ↗
16AQR CAPITAL MANAGEMENT LLC$913M1
derived ·§ EDGAR ↗
17Capital Research Global Investors$895M1
derived ·§ EDGAR ↗
18Amundi$827M1
derived ·§ EDGAR ↗
19Nuveen, LLC$800M1
derived ·§ EDGAR ↗
20UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$785M1
derived ·§ EDGAR ↗
21D. E. Shaw & Co., Inc.$727M1
derived ·§ EDGAR ↗
22Bank of New York Mellon Corp$679M1
derived ·§ EDGAR ↗
23DIMENSIONAL FUND ADVISORS LP$677M1
derived ·§ EDGAR ↗
24CHARLES SCHWAB INVESTMENT MANAGEMENT INC$597M1
derived ·§ EDGAR ↗
25Legal & General Group Plc$576M1
derived ·§ EDGAR ↗
Show the top 500 of 1,186 holders
Truncated by Public Filings. Top 500 of 1,186 holders shown; the rest are on EDGAR. Method ↗

Crowding — not available in this build. No holder rows for the selected period, so no percentile can be ranked.

Congress ↔ notable managers · WDC

Congress · last 90 days

Buyers
1 Gilbert Ray Cisneros, Jr. D–CA-31 $1K–$15K
Sellers
1 Gilbert Ray Cisneros, Jr. D–CA-31 $1K–$15K

filed 2026-07-31 → 2026-10-29 · statutory ranges

Notable managers · quarter ended 2026-03-31

by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · WESTERN DIGITAL CORP

Merged timeline of congressional filings and notable-manager moves on WDC
DateWhoChangeSize
2026-10-12Gilbert Ray Cisneros, Jr. CongressSELL$1K–$15K
2026-09-04Gilbert Ray Cisneros, Jr. CongressBUY$1K–$15K
2026-05-15Bridgewater Associates 13FADD+176,700 sh
2026-05-15Tudor Investment Corp 13FADD+53,842 sh
2026-05-15Moore Capital Management 13FNEW+880 sh
2026-05-15Gotham Asset Management 13FTRIM−138,986 sh
2026-05-14Caxton Associates 13FTRIM−10,297 sh

7 newest, by filing date · 13F rows are quarter-end snapshots, not trades

Congress vs filers

12 months
Congress net (rows)2 buy / 1 sell
Congress net ($ bound)−$13.0K to $29.0K
Filersnot computedThe filer side needs per-issuer quarter-over-quarter actions, which the published aggregate does not carry for this issuer. Convergence and divergence are stated only when both sides are computed.