Top Analyst Upgrades and Downgrades (CELG, CMCSA, FB, FFIV, JPM, JNPR, KMB, NWSA, PDCE, AET, CI, HUM, UNH, WLP)

These are some of this Thursday’s top analyst upgrades, downgrades and initiations seen from select Wall St. research calls.

Celgene Corp. (NASDAQ: CELG) raised to Buy at Deutsche Bank.

Comcast Corp. (NASDAQ: CMCSA) started as Neutral at Baird.

Facebook Inc. (NASDAQ: FB) raised to Buy from Hold with $36 target at Argus.

F5 Networks Inc. (NASDAQ: FFIV) cut to Neutral at Piper Jaffray, cut to Neutral at Citigroup and cut to Market Perform at William Blair; earnings warning has shares down 17% around $75 this morning to a new 52-week low.

J.P. Morgan Chase & Co. (NYSE: JPM) raised to Overweight at Evercore.

Juniper Networks Inc. (NYSE: JNPR) cut to Equal Weight at Barclays; shares are down 5% after F5 Networks warning too.

Kimberly-Clark Corp. (NYSE: KMB) cut to Underperform at BMO Capital Markets.

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News Corp. (NASDAQ: NWSA) raised to Outperform from Neutral at Credit Suisse.

PDC Energy Inc. (NASDAQ: PDCE) raised to Buy at SunTrust Robinson Humphreys; maintained Outperform but cut target to $63 from $65 at Credit Suisse.

Health care insurance stocks started in new coverage at UBS: AETNA Inc. (NYSE: AET) started as Buy, CIGNA Inc. (NYSE: CI) started as Buy, Humana Inc. (NYSE: HUM) started as Neutral, UnitedHealth Group Inc. (NYSE: UNH) started as Buy and WellPoint Inc. (NYSE: WLP) started as Neutral.