Thursday's top analyst upgrades, downgrades and initiations included AbbVie, Biogen, Cree, Etsy, Gilead Sciences, Pfizer, Rite Aid, Solar Edge, Square, 3D Systems and Virgin Galactic.
SeaChange, Sears, Exelixis, and Adamis Pharma all posted new 52-week lows Tuesday.
Adamis Pharmaceuticals saw its shares shoot up early on Monday after the firm announced a partnership with a subsidiary of Novartis.
The top analyst upgrades, downgrades and other research calls from Wednesday include Amazon.com, Applied Materials, Avon Products, CarMax, Micron Technology, Square and Whiting Petroleum.
Stocks overall were fractionally higher early on Monday, August 29, 2016. That makes the big percentages gainers and losers and the companies with big headline news stand out even more.
Biotech companies that lost their way last week truly burned shareholders, whether it was due to ASCO, earnings or even unfavorable clinical trial updates.
Some call the ASCO annual meeting the "Super Bowl for biotechs" because of the significance it holds for so many companies.