Sandisk Corp. 13F holders
Of the 44 funds followed here, 12 reported a position in Sandisk Corp. in a 13F for the quarter ended 30 June 2026. The largest: Citadel Advisors, 9.8 million shares worth $22.21 billion, 2.5% of its reported book. New this quarter: Ratan Capital. Sold out: Appaloosa (Tepper).
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| Citadel Advisors | 9,769,881 | $22.21 billion | 2.5% | +3,168,170 | added | 30 June 2026 | 13F |
| FMR LLC | 7,861,665 | $17.88 billion | 0.8% | -5,528,320 | trimmed | 30 June 2026 | 13F |
| Geode Capital Management | 3,591,499 | $8.15 billion | 0.4% | -621,273 | trimmed | 30 June 2026 | 13F |
| Norges Bank | 2,055,094 | $4.67 billion | 0.5% | held | 30 June 2026 | 13F | |
| Whale Rock Capital Management | 596,545 | $1.36 billion | 10.9% | -203,042 | trimmed | 30 June 2026 | 13F |
| Millennium Management | 596,129 | $1.36 billion | 0.5% | -807,966 | trimmed | 30 June 2026 | 13F |
| Two Sigma Investments | 251,375 | $571.6 million | 0.4% | -550,451 | trimmed | 30 June 2026 | 13F |
| Point72 Asset Management | 180,992 | $411.5 million | 0.5% | -471,416 | trimmed | 30 June 2026 | 13F |
| Duquesne Family Office | 34,900 | $79.4 million | 1.5% | -3,255 | trimmed | 30 June 2026 | 13F |
| Renaissance Technologies | 4,980 | $11.3 million | 0.0% | -794,588 | trimmed | 30 June 2026 | 13F |
| Ratan Capital | 1,740 | $4.0 million | 1.3% | +1,740 | new | 30 June 2026 | 13F |
| Bridgewater Associates | 317 | $720,772 | 0.0% | -9,140 | trimmed | 30 June 2026 | 13F |
| Appaloosa (Tepper) | 0 | $0 | 0.0% | -281,250 | exited | 30 June 2026 | 13F |
Value is what the fund reported. Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.
Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 6 August 2026 | 13G/A | Fmr Llc and 3 others | 7.9 million | 5.3% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 5 August 2026 | 13G | Jane Street Group, Llc and 7 others | 7.4 million | 5.0% | 30 July 2026 | passive, under 20% (13d-1(c)) | EDGAR |
| 15 May 2026 | 13G/A | Western Digital Corporation and 1 other | 1.0 million | 0.7% | 31 March 2026 | passive, other (13d-1(d)) | EDGAR |
| 30 April 2026 | 13G | Vanguard Capital Management and 1 other | 11.0 million | 7.2% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 7 April 2026 | 13G/A | Fmr Llc and 3 others | 13.4 million | 8.7% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 27 March 2026 | 13G/A | The Vanguard Group and 1 other | 0 | 0.0% | 13 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 21 January 2026 | 13G/A | BlackRock, Inc. and 1 other | 8.8 million | 6.0% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 10 November 2025 | 13G/A | DNB Asset Management AS and 1 other | 1.0 million | 0.7% | 30 September 2025 | passive, institutional (13d-1(b)) | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder. Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short.
Fails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 27 August 2026 | 21 | $1,499.37 | SEC |
| 25 August 2026 | 36,417 | $1,493.12 | SEC |
| 24 August 2026 | 1,700 | $1,596.08 | SEC |
| 21 August 2026 | 857 | $1,600.62 | SEC |
| 20 August 2026 | 45 | $1,568.87 | SEC |
| 19 August 2026 | 66 | $1,625.78 | SEC |
| 17 August 2026 | 316 | $1,641.11 | SEC |
| 3 August 2026 | 18,618 | $1,214.83 | SEC |
| 27 July 2026 | 57 | $1,436.56 | SEC |
| 24 July 2026 | 6,990 | $1,610.33 | SEC |
| 22 July 2026 | 295 | $1,589.40 | SEC |
| 21 July 2026 | 283 | $1,390.95 | SEC |
| 20 July 2026 | 1,000 | $1,354.82 | SEC |
| 17 July 2026 | 7,607 | $1,411.08 | SEC |
| 15 July 2026 | 153 | $1,757.82 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period. Largest in the window: 36,417 on 25 August 2026. A fail is an operational fact about settlement, not a position.
Source
Each fund's 13F-HR on EDGAR, linked per row; positions matched to SNDK by CUSIP from the SEC's own fails-to-deliver files; Schedule 13D and 13G from the company's own filing index, each read to confirm the company is the issuer named.
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