Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. Lowe's (LOW) upgraded to Buy from Hold at Jefferies with analyst Daniel Binder saying his "deep-dive" analysis suggests the company can double EBIT and triple earnings within five years. 2. Charter (CHTR) upgraded to Outperform from Market Perform at Wells Fargo with analyst Marci Ryvicker saying she has "renewed confidence" in a successful turnaround despite a tough competitive environment. 3. Sprint (S) upgraded to Sector Weight from Underweight at KeyBanc with analyst Brandon Nispel saying the third quarter results were better than feared. 4. PayPal (PYPL) upgraded to Outperform from Market Perform at Wells Fargo with analyst Timothy Willi saying the strength of PayPal's competitive position and "substantial tailwinds" driving e-commerce growth will outweigh any negative earnings headwind that may emerge from the company's transitioning relationship with eBay (EBAY). 5. Norwegian Cruise Line (NCLH) upgraded to Overweight from Neutral at JPMorgan analyst Joseph Greff saying he believes demand and pricing trends in the Cruise Line industry continue to show momentum, and his channel checks indicate Norwegian has had the most pricing momentum over the past few months. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.

Bullish option flow detected in SentinelOne with 3,776 calls trading, 1.1x expected, and implied vol increasing over 2 points to 50.36%. Aug-24 35 calls and Apr-24 20.5 puts are the most active options, with total volume in those strikes near 2,700 contracts. The Put/Call Ratio is 0.21. Earnings are expected on May 30th.

Deutsche Bank lowered the firm's price target on Charter Communications to $320 from $375 and keeps a Hold rating on the shares. The firm cites lower free cash flow estimates for the target drop. The 34% year-to-date decline in Charter's stock price arguably prices in a more challenged growth outlook, the analyst tells investors in a research note. However, the firm does not expect a recovery in the shares until the impact from the Affordable Connectivity Program sunsetting is known and there is some visibility into sustained positive broadband subscriber growth coming back into the model.