Sigma Planning Corp
- SEC CIK
- 0001449126
- Latest filing
- Aug 7, 2026
WDC holding history
Western Digital Corp in every 13F filed by Sigma Planning Corp, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.
WDC overviewAll 13F holders of WDCFull Q2 2026 holdings
- Shares (Q2 2026)
- 702
- Value
- $448.3K
- % of portfolio
- <0.1%
- Quarters held
- 6
- Since Q1 2021
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q2 2026 | 702 | $448.3K | <0.1% | +702 | New | Holders |
| Q2 2022 | 0 | $0 | 0.0% | −4,430−100.0% | Sold out | Holders |
| Q1 2022 | 4,430 | $220.0K | <0.1% | +350+8.6% | Added | Holders |
| Q4 2021 | 4,080 | $266.0K | <0.1% | +465+12.9% | Added | Holders |
| Q3 2021 | 3,615 | $204.0K | <0.1% | −700−16.2% | Reduced | Holders |
| Q2 2021 | 4,315 | $307.0K | <0.1% | −308−6.7% | Reduced | Holders |
| Q1 2021 | 4,623 | $309.0K | <0.1% | – | – | Holders |
Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.