NEW YORK (TheStreet) -- RATINGS CHANGES

Abercrombie & Fitch (ANF) - Get Report was downgraded to market perform from outperform by FBR Capital Markets, which said that brand turnaround may be pushed out and the company is facing increased international competition.

Apollo (APOL) was downgraded to underperform from neutral by Bank of America/Merrill Lynch, which set a $14 price target, saying the company is facing another transition year.

Aspen Technology (AZPN) - Get Report was upgraded to hold by TheStreet Ratings. You can view the full analysis from the report here: AZPN Ratings Report.

Biocryst (BCRX) - Get Report was upgraded to buy from neutral by Bank of America/Merrill Lynch, which set a $19 price target, saying Biocryst's new drug is more likely to be approved and would drive future growth.

Costar Group (CSGP) - Get Report was downgraded to hold by TheStreet Ratings. You can view the full analysis from the report here: CSGP Ratings Report.

Fitbit (FIT) - Get Report was started at outperform by RBC Capital, which set a $45 price target, saying the market is in the early-growth stages and the company can continue to gain market share.

Intersect (XENT) - Get Report was started at buy by Cantor Fitzgerald, which set a $35 price target, saying the company is unique in offering products to comprehensively treat sinusitis by opening, medicating and maintaining the sinus channels.

Lowe's (LOW) - Get Report was upgraded to outperform from market perform by BMO Capital, which set an $81 price target. Estimates have also been increased, given higher expected economic activity in the Southeast, BMO said.

MBIA (MBI) - Get Report was downgraded to neutral from buy by MKM Partners, which set an $8 price target, saying that MBI, along with AGO, has $2.5 billion in Puerto Rico debt service exposure through 2020. Analysts still see value in the shares, though the near term could be volatile.

Popular Inc. (BPOP) - Get Report was upgraded to equal-weight by Morgan Stanley, which set a $31 price target, saying the company lacks further downside catalysts.

Shopify (SHOP) - Get Report was started at outperform by Credit Suisse, which set a $40 price target, saying the company can generate 38% annual sales growth in the coming years.

Sysco (SYY) - Get Report was downgraded to hold from buy by Deutsche Bank, which set a $40 price target, citing valuation following the loss of the US Foods deal.