Major tech gainers/decliners: IPGP, SLTD, CYBR, YOKU, YGE, VDSI

• Today's notable tech gainers include industrial laser maker IPG Photonics (IPGP +4.3%), cloud classroom software provider 2U (TWOU +5.8%), California solar installer Solar3D (SLTD +10.3%), Korean analog/mixed-signal chipmaker MagnaChip (MX +6.8%), privileged account security software vendor CyberArk (CYBR +5.3%), haptic tech provider Immersion (IMMR +4.6%), and solar power optimizer maker/recent IPO SolarEdge (SEDG +4.8%). The Nasdaq is up 1.1%.
• There are relatively few major decliners. The group includes Chinese online video platform Youku (YOKU -4.5%), Chinese solar cell/module maker Yingli (YGE -5.6%), authentication hardware/software provider Vasco (VDSI-OLD -3%), and IP licensing firm Marathon Patent Group (MARA -8.8%).
• Solar3D is now up 97% from a March 18 close of $2.57. SolarEdge is up 23% from last week's $18 IPO price. Immersion might be getting a lift from a Barclays report stating Analog Devices will be supplying converter ICs to help enable haptics support on future iPhones/iPads.
• Youku has fallen to fresh 52-week lows, and is now down 18% since posting Q4 results and disclosing an SEC inquiry on March 19. Marathon is down 11% since reporting last Thursday.
• Previously covered: BlackBerry, Altera, Ambarella, OTI, Angie's List, You On Demand, 500.com, Chinese online real estate