NEW YORK (TheStreet) -- RATINGS CHANGES

Ambarella (AMBA) - Get Report was upgraded to buy at TheStreet Ratings. You can view the full analysis from the report here: AMBA Ratings Report.

Genesco (GCO) - Get Report was upgraded to buy at Sterne Agee. $72 price target. Estimates also increased, as Journeys can continue to drive growth, Sterne Agee said.

Healthequity (HQY) - Get Report was initiated as a hold by TheStreet Ratings. You can view the full analysis from the report here: HQY.

JetBlue (JBLU) - Get Report was downgraded to neutral at JPMorgan. This was a valuation call, based on a $27 price target, said JPMorgan.

Minerals Technologies (MTX) - Get Report was upgraded to overweight at Keybanc. $70 price target. The company has multiple growth drivers and should see higher earnings in the coming quarters, Keybanc said.

United Technologies was downgraded to sector perform from outperform at RBC Capital. This was a valuation call, based on a $100 price target, RBC said.

Marriott Vacations (VAC) - Get Report was upgraded to outperform from market perform at JMP Securities. $89 price target. The stock is attractive, following a 21% decline, JMP said.

VMWare (VMW) - Get Report was downgraded to market perform from outperform at JMP Securities. The company is facing increased competition from Amazon, said JMP.

This article was written by a staff member of TheStreet.