Here are the biggest calls on Wall Street on Tuesday:

Goldman Sachs initiates MediaAlpha as buy

Goldman says it ’ s bullish on shares of the ad tech platform company.

"We are initiating coverage of MediaAlpha ( MAX ) with a Buy rating and a $20 12-month PT."

Morgan Stanley reiterates Nvidia as overweight

Morgan Stanley says it ’ s standing by shares of the stock.

"We believe NVIDIA ’ s upcoming earnings will dispel concern and drive share price rebounds for the overall AI supply chain."

Goldman Sachs upgrades Santander Chile to neutral from sell

Goldman says it ’ s getting more constructive on shares of the LatAm bank.

"We upgrade Santander Chile to Neutral, as we see strong earnings momentum at the bank in the medium term, where we expect EPS to grow 24% on average in 2023-2026E and profitability rebounding after decreasing sharply in 2023."

Barclays initiates LatAm Airlines as overweight

Barclays says it ’ s bullish on shares of the LatAm airlines company.

"After a transformational restructuring process, LATAM Airlines is well positioned to profit from a supportive market environment. Its extensive network, lean cost structure, and strong balance sheet should drive sustainable results."

UBS reiterates Exxon as buy

The firm says it Exxon is a top idea, but that it likes Chevron also.

"We reiterate our Buy rating on both XOM and CVX post the 2Q updates. We continue to see both as well positioned for the current cycle with visible Upstream growth outlooks, Downstream capacity additions, balance sheets capable of supporting shareholder returns, and accelerating Low Carbon investments."

JPMorgan upgrades Vista to overweight from neutral

JPMorgan said the oil and gas company is "highly differentiated" and a top way to play Argentina.

"We initiate coverage of Vista Energy with an Overweight rating and a price target of $68."

JPMorgan reiterates Burlington as overweight

The firm says Burlington is one of the better positioned off-price retailers.

"As the #3 off-price retailer, behind TJX and ROST, BURL in our view offers a compelling opportunity to participate in the outperformance of the off-price channel with sales/square foot almost one-third that of peers and a branded cycle still in the early innings."

Bank of America reinstates TKO as buy

The firm says the sports and media company is "resilient."

"Shares of TKO are up ~45% YTD, which represents significant outperformance vs. traditional media companies and the broader market."

Bernstein upgrades Biomarin to outperform from market perform

Bernstein said in its upgrade of the Biomarin that it ’ s bullish heading into the company ’ s investor day in early September.

"We expect mgmt to lay out a credible margin expansion path including further near-term cost-optimization, which should narrow the gap between buyside and sellside op margin expectations."

Daiwa downgrades JPMorgan to outperform from buy

Daiwa said it sees less upside for the banking giat.

"Among individual names, we lower our rating on JPM one notch to 2 ( Outperform ) as upside appears to have narrowed following the stock ’ s strong performance over the past two years."

JPMorgan reiterates Amazon as a best idea

JPMorgan says it ’ s sticking with shares of the e-commerce giant.

"AMZN remains our Best Idea, and we believe US e-commerce penetration of Adj, [ adjusted ] Retail Sales could nearly double from ~22% today to 40%+ long term."

Evercore ISI upgrades Vornado to outperform from underperform

Evercore said in its upgrade of Vornado that there ’ s a slew of positive catalysts ahead for the real estate investment trust company.

"While the stock is up 17% YTD and has outpaced the REIT index since the start of the year, most of that outperformance occurred post Q2 results in early August and we believe that there are several additional catalysts over the next 6 to 12 months that could allow the stock to keep outperforming the peers."

Wells Fargo names Eli Lilly a top pick

Wells says it thinks "manufacturing and [ a ] wealth of data are going to create a big moat for LLY in longer term."

"LLY is our new Top Pick ."

Citi opens a positive catalyst watch on Abercrombie & Fitch

Citi said it ’ s bullish heading into earnings next week but is sticking with its long-term neutral rating on Abercrombie.

"We believe the risk/reward is favorable into 2Q EPS and are opening a 30-day positive catalyst watch."

Morgan Stanley reiterates Palo Alto Networks as overweight

Morgan Stanley raised its price target on shares of Palo Alto to $390 per share from $360 following earnings.

"Looking ahead, multiple product cycles, AI tailwinds and easier comps should drive topline acceleration thru FY25."

Edward Jones initiates Advanced Micro Devices as buy

Edward Jones says it ’ s bullish on shares of the semis company.

"First, growing demand for data-center infrastructure should help drive accelerating sales of AMD ’ s chips, in particular graphics processing units ( GPUs ) and central processing units."

Needham initiates Sonic Automotive as buy

Needham says the auto dealer franchise is well positioned.

"We initiate SAH with a Buy rating and a $73 price target."

JPMorgan names Mastercard a top pick

JPMorgan said it has a "better line of sight into revenue and guidance upside for Mastercard."

"Mastercard is the #2 global card network behind Visa, with larger relative exposure to faster growing non-US markets and a larger book of value-added services supporting its core card network revenues."

Oppenheimer reiterates Ulta as outperform

Oppenheimer says shares of Ulta remain attractive following the disclosure of Berkshire ’ s stake in the stock.

"We believe the NT setup is now trickier with the Berkshire investment, but for longer-term players, we would continue to take advantage of any dips. We remain attracted to a discounted valuation and await new management efforts to drive growth in FY25 and beyond."