Buy/Sell: Wall Street’s top 10 stock calls this week

What has Wall Street been buzzing about this week? Here are the top 5 Buy calls and the top 5 Sell calls made by Wall Street’s best analysts during the week of May 26-30. 

Find all top-rated stocks by the best-rated analysts on TipRanks.

Top 5 Buy Calls:

1. Nvidia upgraded to Buy at Summit Insights

Summit Insights upgraded Nvidia (NVDA) to Buy from Hold after its Q1 results and guidance. The risk of double-ordering on its Hopper generation AI GPU and the risk of China export controls are now priced into the stock, the firm tells investors in a research note. Summit also believes that the data center capex spending for the training market will remain robust and benefit Nvidia AI GP and data center networking businesses.

2. Broadcom initiated with a Buy at Seaport Research

Seaport Research initiated coverage of Broadcom (AVGO) with a Buy rating and $230 price target. Broadcom is one of the leading beneficiaries of the current AI spending boom, but its prospects are “not well understood by the Street and not priced into the stock,” the firm argues. Any time Nvidia (NVDA) loses share today it is to hyperscalers’ internal chip designs and Broadcom is “poised to make a lot of money helping them bring those chips to production,” Seaport tells investors.

3. Block upgraded to Outperform at BNP Paribas Exane

BNP Paribas Exane upgraded Block (XYZ) to Outperform from Neutral with a $72 price target. The company’s guidance for mid-teens gross profit growth acceleration in Q4 looks attainable as headwinds fade, such as high comps in bitcoin and continued pressure in the cash business, the firm tells investors in a research note. BNP Paribas Exane says the acceleration over second half of 2025 would represent “business-as-usual,” while Block’s Borrow product and Proto launch provide scope for additional upside. The firm sees room for a re-rating of the shares

4. Arista Networks initiated with a Buy at Redburn Atlantic

Redburn Atlantic initiated coverage of Arista Networks (ANET) with a Buy rating and $112 price target. Arista’s networking products are “significant beneficiaries” of both larger generative artificial intelligence cluster sizes and the shift towards ethernet for back-end networks, the firm tells investors in a research note. Redburn says the company’s competitive advantage lies in its network operating system, Extensible Operating System. The firm sees 22% potential upside to the current share price.

5. Wingstop upgraded to Buy at Truist

Truist upgraded Wingstop (WING) to Buy from Hold with a price target of $400, up from $274. The firm has increased confidence that Wingstop’s same-store-sales will trough in Q1 and accelerate in 2026, with Truist card data pointing to improved trends in May. Truist also believes Wingstop will see a potentially significant incremental sales lift with the “Smart Kitchen” rollout. Furthermore, the firm expects sustained mid-teens new store development to support the stock’s valuation expansion and sees potential upside to Wingstop’s long-term development targets.

Top 5 Sell Calls:

1. Truist downgrades Airbnb to Sell on “soft” summer leisure trends

Truist downgraded Airbnb (ABNB) to Sell from Hold with a price target of $106, down from $112. The firm believes “soft” summer leisure trends, both for the U.S. and Europe, are not being fully anticipated by analysts and Airbnb investors. The stock’s premium valuation multiple versus other “not too dissimilar asset-lite hospitality companies” such as Hilton (HLT) is fully deserved, Truist tells investors in a research note. The firm believes Q3 RevPAR for the loading sector “increasingly looks to be a miss” versus current consensus expectations. Truist sees company 2025 RevPAR guides tracking towards the bottom-end of guided ranges.

2. Booz Allen downgraded to Sell at Goldman Sachs

Goldman Sachs downgraded Booz Allen (BAH) to Sell from Neutral with a price target of $94, down from $108. The firm sees limited revenue and earnings growth over the medium-term for the company, while saying the stock’s valuation still has downside risk. Goldman sees Booz Allen’s medium-term revenue growth now closer to flat as federal civilian spending is under pressure, and priorities shift within Department of Defense. It sees risk to the company’s margins as contract structures change. Booz Allen’s valuation levels can go lower if its earnings are flat, contends the firm.

3. Prothena downgraded to Underperform at BofA after birtamimab fails in clinic

BofA downgraded Prothena (PRTA) to Underperform from Neutral with a price target of $4, down from $22, after lead drug birtamimab failed its Phase 3 trial to treat Mayo Stage IV AL Amyloidosis. Prothena continues to develop PRX012, a monoclonal antibody for Alzheimer’s disease, but it is still in early development and the firm assumes a conservative stance on this opportunity as currently approved therapies have not met expectations.

4. National Storage downgraded to Underweight at Morgan Stanley

Morgan Stanley downgraded National Storage (NSA) to Underweight from Equal Weight with a price target of $30, down from $39. The firm says job openings dropped 12.4% year-over-year in Q2-to-date, which is a headwind to demand. National Storage’s submarkets face the greatest headwinds, with lowest population density, household income and job openings versus peers given its secondary market focus, the firm tells investors in a research note. Morgan Stanley cites the company’s portfolio positioning versus peers, its higher leverage, and potential dividend risk for the downgrade.

5.  Cleveland-Cliffs double downgraded to Sell at GLJ Research

GLJ Research double downgraded Cleveland-Cliffs (CLF) to Sell from Buy with a $3.91 price target, calling the firm’s recent upgrade of the shares “an embarrassing mistake.” The firm cites a record increase in debt in Q1, leverage that is close to 40-times due mainly to “a spate of ill-advised acquisitions,” recent market share losses and U.S. steel industry fundamentals that are in “free-fall” for its double downgrade and price target cut.