Notable Upgrades: Cerus Corp. (CERS), BioDelivery Sciences (BDSI), NVIDIA Corp. (NVDA), Potash Corp. (POT), Teekay Tankers Ltd. (TNK)

Analysts at Cantor Fitzgerald lifted their price target on shares of Cerus Corporation (CERS) to $8 from $6 in a report released on Friday. The firm reiterated a ‘Buy’ rating on the stock.

CERS currently prints a one year return of about 4.94% and a year-to-date loss of around 4.50%.

Shares of Cerus gained 46c to $6.62 in recent trading.

Roth Capital analysts are out with a report this morning upgrading the shares of BioDelivery Sciences International, Inc. (BDSI) to ‘Buy’ from ‘Neutral’ and lowered the price target to $18.

BDSI’s shares have declined 11.88% in the last 4 weeks and 23.27% in the past three months. Over the past 5 trading sessions the stock has lost 11.04%. Shares of BioDelivery Sciences are up 121.73% this year.

BDSI gained 0.62 to $13.68 in mid-day trading today.

Shares of NVIDIA Corporation (NVDA) edged up 6c to $20.28 in recent trade Friday after an upgrade to ‘Neutral’ from ‘Underperform’ at BofA/Merrill. The bank also raised its price target on the stock from $19 to $22.

The Santa Clara-based company, which is currently valued at $10.98B, has a median Wall Street price target of $21.00 with a high target of $26.00. NVDA is up 34.35% year-over-year as of the close of trading on Thursday.

Shares of Potash Corp. (POT) gained 0.45 to $35.72 in mid-day trading, after the company was upgraded to ‘Buy’ from ‘Neutral’ and had its price target raised to $40 from $38 at UBS.

Potash Corp. has a market cap of $29.64B and a median Wall Street price target of $35.25 with a high target of $45.00.

POT currently prints a one year return of about 17.06% and a year-to-date return of around 11.47%.

Teekay Tankers Ltd. (TNK) was raised to ‘Buy’ from ‘Neutral’ at BofA/Merrill on Friday. TNK was also downgraded to ‘Neutral’ from ‘Buy’ and target raised from $5.5 to $6 at UBS.

TNK shares recently lost 0.74 to $4.66. The stock is up more than 64.13% year-over-year and has gained roughly 42.11% year-to-date. In the past 52 weeks, shares of the Hamilton, Bermuda-company have traded between a low of $3.18 and a high of $5.95.