Institutional investors and professional traders rely on The Fly to learn which companies the best analysts on Wall Street are saying to buy and sell.

Research analysts at Wall Street's largest banks issue recommendations on whether a stock should be bought, held, or sold. The Fly's team of financial market experts scours hundreds of research notes daily to uncover the best trading ideas. Check out today's top analyst calls from around Wall Street, compiled by The Fly.

Top 5 Upgrades:

• Guggenheim analyst Michael Morris upgraded Disney (DIS) to Buy from Neutral with a price target of $145, up from $110, following the company's third quarter results.
• Atlantic Equities analyst Kunaal Malde upgraded Shopify (SHOP) to Overweight from Neutral with a $46 price target. Shopify continues to be "a market leader in product innovation and a high-quality market share gainer, said Malde, who sees upside to estimates following the recent reset.
• KeyBanc analyst Sophie Karp upgraded First Solar (FSLR) to Overweight from Sector Weight with a $145 price target. The introduction of the manufacturing tax credit for domestically produced solar panels makes First Solar the most direct immediate beneficiary of the policy in her coverage, the analyst argued.
• Evercore ISI analyst David Raso upgraded Deere (DE) to Outperform from In Line with a price target of $416, up from $401, as he updates his preferences in Machinery following second quarter earnings season.
  Seaport Global analyst Mitch Kummetz upgraded Boot Barn (BOOT) to Buy from Neutral with a $100 price target following his recent fireside chat with company management.
• Evercore ISI analyst David Togut upgraded Fiserv (FISV) to Outperform from In Line with a price target of $149, up from $101, as the company turns the tables on its disruptive competitors, winning more with growth, scale and finally cash flow to fund innovation and acquisitions, Togut tells investors in a research note.

Top 5 Downgrades:

• Citi analyst Steven Zaccone downgraded Lowe's (LOW) to Neutral from Buy with a price target of $205, down from $222. The analyst is concerned that the weakening macro backdrop, combined with slowing do-it-yourself demand and rising promotional risk, will make the margin expansion path at Lowe's tougher and is using the recent strength in retail stocks to downgrade the shares.
• Atlantic Equities analyst Simon Clinch downgraded Upstart (UPST) to Underweight from Neutral with a price target of $22, down from $32. The analyst is lowering his 2022, 2023 and 2024 revenue and EPS estimates after Upstart provided "disappointing" third quarter guidance that he said highlights the ongoing severity of headwinds facing the business in the near-term.
• Wells Fargo analyst Jeff Cantwell downgraded Marqeta (MQ) to Equal Weight from Overweight with a price target of $11, down from $13, on reduced visibility into the go-forward environment.
• Evercore ISI analyst David Raso downgraded Paccar (PCAR) to In Line from Outperform with a price target of $100, up from $97, as he updates his preferences in Machinery following the second quarter earnings season.
• Bank of America analyst Brent Navon downgraded BuzzFeed (BZFD) to Underperform from Neutral with a price target of $2, down from $4.50. While he is still attracted to BuzzFeed's collection of "strong brands," Navon sees macro challenges weighing on fundamentals and visibility in the near-term.

Top 5 Initiations:

• Goldman Sachs analyst Susan Maklari initiated coverage of Tempur Sealy (TPX) with a Buy rating and $34 price target. Tempur Sealy is well positioned for above average growth as it delivers on company-specific initiatives that should drive organic expansion and further share gains that lead to EPS ahead of expectations, Maklari argued.
• Chardan analyst Daniil Gataulin initiated coverage of Oyster Point Pharma (OYST) with a Buy rating and $22 price target. The analyst is optimistic about a continued successful launch of Tyrvaya, which was approved in October 2021 and launched commercially the following month.
• Barclays analyst Brandon Oglenski reinstated coverage of Frontier Group (ULCC) with an Overweight rating and $19 price target, citing what he calls its "favorable future growth potential at a current discounted price."
• Morgan Stanley analyst Adam Kramer assumed coverage of AvalonBay (AVB) with an Overweight rating with a price target of $242, up from $210. The analyst has increased conviction in 2023 SS-revenues of 7%+ as in-place leases are still 12% below market, and tells investors in a research note that he sees Street estimates moving higher, cushioning valuation.
• Morgan Stanley analyst Adam Kramer assumed coverage of Equity Residential (EQR), Essex Property Trust (ESS) and UDR (UDR) with Equal Weight ratings.