**Spirit Airlines and JetBlue Airways:**
Encountering declines of 22% and 8%, respectively, Spirit Airlines and JetBlue Airways faced setbacks after a federal judge blocked JetBlue’s proposed $3.8 billion acquisition of Spirit. In response, Bank of America downgraded Spirit, and Susquehanna downgraded the airline.
**Interactive Brokers:**
Experiencing a nearly 2% rise, shares of the electronic broker responded positively after revealing mixed fourth-quarter results. While Interactive Brokers exceeded revenue estimates, adjusted earnings fell short of expectations.
**Sinclair:**
With a notable surge of 13%, Sinclair’s shares rose as the broadcaster reached a settlement in all litigation related to Diamond Sports Group, agreeing to a $495 million cash payment.
**SolarEdge:**
Facing a 5% decline, SolarEdge witnessed a downgrade to underweight by Barclays, pointing to a more challenging path to recovery compared to industry peers.
**Teladoc:**
Sliding 4.5%, Teladoc’s shares reacted to a downgrade to neutral at D.A. Davidson, which cited concerns about stalling growth.
**Nutanix:**
Marking a 2% gain, the cloud computing company received an outperform rating from William Blair, anticipating positive momentum amid industry reshuffling post the Broadcom-VMware acquisition.
**Instacart:**
Enjoying an 8% increase, Instacart’s shares rose following an upgrade to outperform by Wolfe Research, highlighting an appealing risk/reward profile and potential revenue growth paths, including a potential merger with Uber.
**Rivian:**
Incurring an 8% decline, the electric vehicle manufacturer faced a downgrade to a hold rating by Deutsche Bank, expressing concerns about the timeline for gross margin growth.
**Tesla:**
Witnessing about a 3% drop, Tesla’s stock responded to the reduction in prices for its Model Y cars in Europe, following similar cuts in China.
**Ford:**
With a 2.5% slide, Ford’s stock faced a downgrade to neutral from buy by UBS, citing a fair valuation and potential challenges compared to competitors.
**Morgan Stanley:**
Experiencing a 2% fall, shares of Morgan Stanley reacted to a downgrade to neutral from overweight by JPMorgan, reflecting on a mixed quarterly report and CEO warnings about significant downside risks.
**Polaris and Mattel:**
Marking a nearly 2% gain, Polaris received an upgrade to overweight from Morgan Stanley. In contrast, Mattel saw a 2.8% decline following a downgrade to equal weight, citing high consensus estimates and a challenging 2024 outlook.
**Boeing:**
Showing a 1% increase, Boeing’s stock rose after the Federal Aviation Administration completed inspections on 40 of Boeing’s 737 Max 9 airplanes.
**Fisker:**
Experiencing a 10% drop, Fisker’s shares responded to a downgrade to market perform from TD Cowen, pointing to shifts in distribution strategy, continued delivery issues, and a softening EV market.
**Marathon Digital:**
Despite an upgrade to buy from BTIG, the crypto mining firm faced a 3% decline. This followed the recent approval of bitcoin exchange-traded funds, and Marathon Digital closed the acquisition of two bitcoin mining sites from Generate Capital.
