Strategic Investment Solutions Inc. IL bought a new position in shares of Sandisk Corporation (NASDAQ:SNDK – Free Report) in the 2nd quarter, according to its most recent 13F filing with the Securities & Exchange Commission. FourThought Financial Partners LLC bought a new position in shares of Sandisk in the fourth quarter worth about $422,000. Finally, North Dakota State Investment Board bought a new position in shares of Sandisk in the fourth quarter worth about $1,127,000. In the last three months, insiders have sold 6,246 shares of company stock valued at $9,993,292. Why SanDisk Stock Is FallingFiscal first-quarter revenue guidance of $10.3 billion to $10.8 billion was slightly below some Wall Street estimates.