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Ken Griffin's Sandisk Corporation (SNDK) position

Yes: as of Q1 2026, Ken Griffin holds 608K shares of SNDK worth $386M (0.3% of the disclosed portfolio). Last quarter the position was increased by 50.7%. First disclosed Q1 2025.
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Current value
$386M
Shares held
608K
% of portfolio
0.3%
Est. average buy price (i)
$240.41
Quarter-end price
$635.34

Estimated trade prices

Average price in quarters with purchases
$95.28
Average prices in quarters with sales
  • Q3 2025: $58.39 (1.8M shares sold)

SNDK price vs Griffin's position

1Y 3Y 5Y MAX
Dates
$20$2,000$4,0002026New position of 1.6M shares · Q1 2025. Average closing price $49.67 · Price range $36.00–$56.421.6MsharespurchasedAdded 529K shares (32.7%) · Q2 2025. Average closing price $38.24 · Price range $29.62–$48.11529KsharespurchasedSold 1.8M shares (84.8%) · Q3 2025. Average closing price $58.39 · Price range $40.69–$113.501.8MsharessoldAdded 78K shares (23.9%) · Q4 2025. Average closing price $200.38 · Price range $117.91–$283.1078KsharespurchasedAdded 205K shares (50.7%) · Q1 2026. Average closing price $563.78 · Price range $274.08–$772.09205Ksharespurchased
Average closing price · filing quarter
$563.78
Price range · filing quarter
$274.08 – $772.09
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Added +205K +$115M +50.7% 608K May 15, 2026
Q4 2025 Added +78K +$16M +23.9% 403K Feb 17, 2026
Q3 2025 Reduced −1.8M −$106M −84.8% 326K Nov 14, 2025
Q2 2025 Added +529K +$20M +32.7% 2.1M Aug 14, 2025
Q1 2025 New +1.6M +$80M – 1.6M May 15, 2025
Data through Q1 2026 · filed May 15, 2026
5 grouped rows from 5 quarters

Who else owns SNDK

FMR LLC
owns 9.0% of shares outstanding
Est. $8.5B · Shares: 13.4M

Morgan Stanley
owns 1.9% of shares outstanding
Est. $1.8B · Shares: 2.8M

Arrowstreet Capital, Limited Partnership
owns 1.9% of shares outstanding
Est. $1.8B · Shares: 2.8M

Goldman Sachs Group Inc
owns 1.4% of shares outstanding
Est. $1.3B · Shares: 2.0M

See all owners of SNDK →

More Griffin positions

NVIDIA Corporation(NVDA)
$3.2B
2.3% of portfolio

Amazon.com, Inc.(AMZN)
$1.7B
1.2% of portfolio

Micron Technology, Inc.(MU)
$1.6B
1.1% of portfolio

Taiwan Semiconductor Manufacturing Company Limited(TSM)
$1.4B
1.0% of portfolio

Apple Inc.(AAPL)
$1.3B
0.9% of portfolio

Meta Platforms, Inc.(META)
$1.0B
0.7% of portfolio

Common questions

Does Ken Griffin own SNDK?

Yes. As of Q1 2026, Ken Griffin disclosed 608K shares of SNDK, worth $386M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Griffin buy SNDK?

Ken Griffin first disclosed a SNDK position in Q1 2025; every quarterly buy and sell since is in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Ken Griffin sell SNDK?

The quarter-by-quarter table above shows each sale and reduction Ken Griffin disclosed in SNDK. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of SNDK does Ken Griffin own?

Ken Griffin disclosed 608K shares of SNDK as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Ken Griffin pay for SNDK?

Ken Griffin's estimated average buy price for SNDK is $240.41, from quarter-average prices weighted by the shares added each quarter. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.