Catch up on the today's top five analyst upgrades with this list compiled by The Fly: 1. Alexion (ALXN) upgraded to Buy from Neutral by Citi analyst Robin Karnauskas, who said the post-Brexit vote selloff offers a good entry point into the name. The analyst's currency analysis suggests no impact from recent moves and she believes the current valuation assumes the worst for the shares. Alexion is currently trading "near our Dark-Sky valuation" of $112 per share, the analyst said, and kept a $151 price target for shares. 2.Tyler Technologies (TYL) upgraded to Buy from Hold by Evercore ISI analyst Kirk Materne, who has a $184 price target on the stock. The analyst views risk/reward as attractive given steady state/local market demand trends and some upside potential when looking to CY17 in terms of upselling New World's Public Safety offering into the existing base as well as potential reacceleration in the e-Filing business as certain California counties come on line, incremental expenses around R&D this year are more "one-time" in nature, and premium valuation is justified given margin expansion, mix of growth and its leading market position. 3. Alamos Gold (AGI) upgraded to Outperform from Market Perform at Raymond James by analysts led by Chris Thompson following an in the precious metals price deck driven by uncertainty created by Brexit and reduced prospects of interest rate increases in the US. The analyst raised Alamos Gold's price target to $53 from $43. The firm also upgraded Eldorado Gold (EGO), Pan American Silver (PAAS) and Couer Mining (CDE) to Outperform from Market Perform and Endeavour Silver (EXK) to Market Perform from Underperform. 4. GameStop (GME) upgraded to Outperform from Market Perform at Telsey Advisory. The firm, which maintained a $35 price target, cited valuation, the company's high dividend yield, the "transformation" of its business towards higher growth areas, and its belief that virtual reality will boost gaming. 5. Lennar (LEN) upgraded to Outperform from Market Perform at Raymond James by analyst Buck Horne, who established a $53 price target, and cited the recent pullback in shares. Following last week's results, the analyst came away impressed with Lennar's second quarter SG&A ratio set a new company record, Houston and South East Florida order growth exceeded expectations, and the portfolio of ancillary businesses continues to deliver upside. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.

Latest data shows the largest indicative borrow rate increases among liquid option names include: Luminar Technologies (LAZR) 13.08% +3.40, Lithium Americas (LAC) 39.35% +2.00, Rumble (RUM) 33.08% +1.07, Cutera (CUTR) 65.23% +0.93, Gorilla Technology Group Inc (GRRR) 49.06% +0.53, Aquestive Therapeutics (AQST) 0.99% +0.44, Medical Properties Trust (MPW) 16.94% +0.20, Nikola (NKLA) 22.04% +0.17, SunPower (SPWR) 3.29% +0.16, and GameStop (GME) 1.74% +0.16.