Here’s a look at the companies generating buzz during midday trading: Tesla – Shares surged over 5% after Politico reported, citing three Trump insiders, that President Donald Trump informed his close associates that Tesla CEO Elon Musk might leave his position in the upcoming weeks. Amazon – The stock of this e-commerce and cloud titan increased by more than 2%. According to The New York Times, which spoke to three sources, Amazon has made a bid to acquire TikTok. The video platform faces a deadline of April 5 to sever ties with its Chinese owner, or it risks being banned in the U.S. Rivian Automotive – Shares of the electric vehicle manufacturer declined over 5%. Rivian reported 8,640 vehicle deliveries for the first quarter, which is a 36% year-over-year drop. Despite this, it surpassed the consensus estimate of 8,200 vehicles as predicted by Visible Alpha. nCino – The cloud banking company saw its stock plummet more than 20% after it released disappointing fourth-quarter earnings and provided weak guidance for the upcoming quarter and full year. In the fourth quarter, nCino reported adjusted earnings of 12 cents per share, falling short of the 19 cents per share expected by analysts from FactSet. The stock had already dropped over 30% in premarket trading, which KBW deemed "overdone." BlackBerry – The software and communications company’s stock fell by 6%. BlackBerry projected its fiscal first-quarter revenue to range between $107 million and $115 million, below the $124.6 million anticipated by analysts according to FactSet. However, its fourth-quarter adjusted earnings and revenue did exceed market expectations. Newsmax – The stock fell more than 45%, reversing some of the significant gains made after its debut on the New York Stock Exchange on Monday. The conservative news network had previously surged 179% in the last session and an impressive 700% on its first trading day. Trump Media & Technology Group – Shares dropped by 5% after the company revealed in a securities filing the potential for a substantial stock sale, including by insider shareholders like the president's trust. Petco – Shares of the pet supply retailer climbed about 15% following news that CEO Joel Anderson purchased nearly 1.6 million shares, as disclosed in a recent filing with the U.S. Securities and Exchange Commission. CoreWeave – The stock rose over 8%, building on recent gains. On Tuesday, shares of the Nvidia-supported cloud computing firm soared nearly 42%. These advances come after a tumultuous debut for CoreWeave late last week. Nvidia – The chip manufacturer saw a slight increase of about 1% ahead of the April 2 tariff announcement. CEO Jensen Huang recently downplayed any potential adverse effects from U.S. tariffs. While most of the company's chips are produced in Taiwan, some systems are manufactured in other countries, including Mexico and the U.S. Scotts Miracle-Gro – The lawn care stock jumped nearly 5% following an upgrade from Truist, which raised its rating from hold to buy. Truist indicated that the stock could benefit as consumers shift their spending from travel to home-related products due to economic uncertainty. — Contributions from CNBC’s Sarah Min, Alex Harring, Lisa Kailai Han, and Michelle Fox.

In midday trading, several companies made significant headlines, exhibiting notable movements in their stock prices.

Tesla saw a jump of over 5% in its shares following a report from Politico. The report, which cited three insiders from former President Donald Trump's circle, suggested that CEO Elon Musk might consider stepping down from his role in the near future. This news has stirred speculation around Tesla's leadership and future direction.

Amazon's shares rose more than 2% after The New York Times reported the tech giant has placed a bid to acquire TikTok. This development is particularly interesting as TikTok is facing a crucial deadline of April 5. If it does not divest from its Chinese ownership, the platform risks facing a ban in the United States.

In contrast, Rivian Automotive experienced a downturn, with its shares falling more than 5%. The electric vehicle manufacturer reported a disappointing first-quarter delivery figure of 8,640 vehicles, marking a 36% decrease from the previous year. Despite this decline, the number exceeded expectations set by analysts who had estimated deliveries at around 8,200 units.

Cloud banking firm nCino faced a significant stock pullback, with shares dropping over 20% after it reported fourth-quarter earnings that fell short of estimates. The company posted adjusted earnings of 12 cents per share, below the anticipated 19 cents. This disappointment extended into guidance for the upcoming quarter and full year, leading to a steep decline of over 30% in premarket trading.

BlackBerry also saw its stock decline by 6%. The company offered weak guidance for its fiscal first quarter, forecasting revenues between $107 million and $115 million, which fell below analyst expectations of $124.6 million. However, BlackBerry's fourth-quarter adjusted earnings and revenue had exceeded consensus estimates, partially mitigating investor concerns.

In dramatic fashion, Newsmax's shares plummeted more than 45%, reversing gains made following its debut on the New York Stock Exchange just a week earlier. The conservative news network had previously surged 179% in one session and posted a staggering overall increase of 700% since its initial trading day.

Trump Media & Technology Group experienced a 5% drop in its stock after disclosing in a filing the potential for a significant stock sale that may include insider shareholders, such as Donald Trump's trust. This news has raised concerns among investors about stability and ownership.

In a positive turn, Petco shares jumped approximately 15% after CEO Joel Anderson acquired nearly 1.6 million shares, a move that signals confidence in the company’s future by its leader.

Another stock gaining traction is CoreWeave, which rose more than 8%, building on gains from a previous surge of nearly 42%. This follows the Nvidia-backed cloud computing company's rocky debut the previous week, suggesting renewed investor interest.

Nvidia, the chipmaker, saw a modest increase of about 1% ahead of an impending tariff announcement dated April 2. CEO Jensen Huang has attempted to quell investor fears by downplaying the potential negative impacts of U.S. tariffs, which are less likely to affect production of their chips since most are manufactured in Taiwan, while some systems come from Mexico and the U.S.

Scotts Miracle-Gro, associated with lawn care, saw a rise of nearly 5% following an upgrade from Truist, which changed its rating from hold to buy. Truist analysts suggested that Scotts could experience favorable momentum as shifting consumer spending patterns divert from travel back to home-related products amid economic uncertainty.

Overall, these developments highlight a wide array of market reactions, from optimism regarding potential acquisitions and insider stock purchases to caution surrounding poor earnings and revenue guidance. The mixed trading environment reflects broader trends in investor sentiment amidst economic fluctuations.