AI summary pending
View Full Filing (SEC EDGAR)Sandisk CORP
$1,704.16-0.9%
+$282.1B
Net Activity
+271.20% total shares
Institutions Holding
1866
Popularity Rank
#166
Avg Weight
0.73%
Total Value
$388.5B
Market Cap
$264.1B
1866 institutions currently hold SNDK, with 1310 net buyers and 563 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Increased
Based on recent trading activity
Net Selling Institutions
563
Net Buying Institutions
1310
Top 5 by Value
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Across its top 20 institutional holders, SNDK's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 10/100, avg. turnover score 48/100).
SNDK ranks #166 out of 37696 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
SNDK is a disclosed holding of Jane Street (Jane Street Group), one of the tracked superinvestors on AlphaSMO — it makes up 2.1% of that fund's own 13F portfolio.
SNDK is a top-conviction position for Situational Awareness LP — at 28.0% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
The largest dollar stake in SNDK belongs to Susquehanna International Group, LLP, but the position matters far more to Situational Awareness LP, who has 28.0% of their own portfolio riding on it — a reminder that the biggest holder by size and the holder with the biggest bet aren't always the same fund.
Wealth Enhancement Advisory Services, LLC has added to its SNDK position for two straight quarters, increasing it by $269.5M to reach $289.7M today.
SNDK is down 0.9% today, but institutions show net buying of $282.1B this quarter — a divergence between today's price move and the underlying institutional flow.
SNDK posted net income of $11.4B over the trailing twelve months, and currently trades at a P/E of 23.1.
+$128.0B
Total Buy Value
$55.0B
Total Sell Value
1310
Net Buyers
563
Net Sellers
SNDK
Q2 2026
Top 5 Institutional Movers
SNDK does not currently show a 13F-and-insider convergence signal — its insider confidence score is 0/100, below the threshold this product uses to flag combined buying pressure.
13F data as of 2026-09-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
0
unique buyers
—
buy value
12-Month Buy/Sell Activity
| Action | Insider | Date | Value |
|---|---|---|---|
| Sell | Bernard Shek | 2026-10-01 | $1.04M |
| Sell | David Goeckeler | 2026-09-17 | $262K |
| Sell | David Goeckeler | 2026-09-17 | $63K |
| Sell | David Goeckeler | 2026-09-17 | $15.07M |
| Sell | David Goeckeler | 2026-09-17 | $1.43M |
| Sell | David Goeckeler | 2026-09-17 | $7.16M |
| Sell | David Goeckeler | 2026-09-17 | $1.82M |
| Sell | David Goeckeler | 2026-09-17 | $481K |
| Action | Member | Trade Date | Amount |
|---|---|---|---|
| Buy | Alan Armstrong Senate | 2026-03-27 | $1K–$15K |
5
Filings (90d)
$128.25M
Total Est. Value
81K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| DAVID GOECKELER | 2026-09-17 | $51.44M |
| LUIS VISOSO | 2026-09-15 | $4.66M |
| DAVID GOECKELER | 2026-09-14 | $55.27M |
| BERNARD SHEK | 2026-09-08 | $7.15M |
| ALPER ILKBAHAR | 2026-09-03 | $9.74M |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
1
Active 5%+ Holders
| Reporting Person | Type | Filing Date | % of Class |
|---|---|---|---|
| FMR LLC | 13G/A | 2026-08-06 | 5.3% |
3
Filings (14d)
AI summary pending
View Full Filing (SEC EDGAR)AI summary pending
View Full Filing (SEC EDGAR)AI summary pending
View Full Filing (SEC EDGAR)80004C200, 80004C101, 80004C900, 80004C950
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402
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