WDC
§ 03 · SIGNAL STACK · WHAT THE INPUTS SAY
§ 04 · FUNDAMENTALS · THE BOOKS
| P/E | 26.1 | P/B | 3.99 |
| EPS (TTM) | 10.21 | Dividend | 0.18% |
| Fund | Shares | % port | Δ Q/Q |
|---|---|---|---|
| BlackRock, Inc. | 35.8M | 0.2% | +1% |
| Fidelity Management | 31.6M | 0.5% | −6% |
| VANGUARD CAPITAL MANAGEMENT LLC | 22.0M | n/a | n/a |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 17.2M | n/a | n/a |
| JPMORGAN CHASE & CO | 17.5M | n/a | +23% |
| State Street | 15.5M | 0.1% | −1% |
Top institutional owners for WDC as of the most recent 13F reporting period (Q1 2026 · Period ended Mar 31). Δ Q/Q reflects share-count change vs. the prior filing — positive green means adding, negative red means trimming. Cross-reference with the ownership-mix bars below to see which strategy cohort is driving the flow.
§ 06 · WHO OWNS IT · BY STRATEGY
Ownership mix by behavioral cohort. Top bars indicate which style of capital dominates the float — passive indexing, quality compounders, dealer/bank, systematic quant, etc. Big quality-compounder share means concentrated active conviction; heavy passive share means flows are dictated by index rebalances, not fundamentals.
§ 07 · INSIDER ACTIVITY · LAST 180 DAYS
| Date | Insider | Action | Shares | $ value |
|---|---|---|---|---|
| SEP 08 | Tregillis Cynthia L | SELL | 432 | −$195K |
| SEP 08 | Gubbi Vidyadhara K | SELL | 2K | −$825K |
| SEP 02 | STREETER STEPHANIE A | SELL | 2K | −$728K |
| AUG 27 | Tregillis Cynthia L | SELL | 1K | −$482K |
| AUG 24 | Tregillis Cynthia L | SELL | 684 | −$305K |
| JUL 21 | Tregillis Cynthia L | SELL | 808 | −$428K |
0 insider buys, 16 sells in the last 180 days. Scheduled 10b5-1 sales are pre-programmed and neutral; discretionary clusters are the tape worth reading. Cross-reference with the signal stack above for context.
§ 08 · COVERAGE · OUR RECENT NOTES
No notes mention WDC yet.