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Cerebras Systems, Inc. engages in the designing and provision of processors for artificial intelligence (AI) training and inference. Its products include inference, Wafer Scale Engine, AI supercomputers, AI model services, cloud, systems, and processors. The company was founded by Sean Lie, Andrew D. Feldman, Gary Lauterbach, Michael James, and Jean Philippe Fricker in 2015 and is headquartered in Sunnyvale, CA.

Cerebras Systems Inc - Ordinary Shares - Class A

Cerebras Systems Inc

Cerebras steep post-IPO selloff is dominating discussion, with traders citing successive share unlocks and insider selling, a TD Cowen price-target cut, and concerns about OpenAI customer concentration and the companys ability to scale. Sentiment is largely bearish, though some investors view the decline as oversold and are averaging down.

CoreWeave, Inc. engages in the powers of the creation and delivery of the intelligence that drives innovation. It offers a solution used by organizations of all sizes that require sophisticated AI computing, from the largest of enterprises to small, well-funded start-ups. The company was founded by Michael Intrator, Brian Venturo, Peter Salanki, and Brannin McBee on September 21, 2017 and is headquartered in Livingston, NJ.

CoreWeave Inc. - Ordinary Shares - Class A

CoreWeave Inc

CoreWeaves selloff amid weakness in AI-infrastructure stocks has put its heavy debt burden, financing costs and insider selling at the center of the debate; a Goldman Sachs upgrade and reported ARK buying have not eased the concern for many traders. Bears warn of dilution or default, while bulls point to contracted AI-compute demand and see buying opportunities, leaving the stocks support levels in sharp focus.

Broadcom Inc. is a global technology company, which designs, develops, and supplies semiconductors and infrastructure software solutions. It operates through the Semiconductor Solutions and Infrastructure Software segments. The Semiconductor Solutions segment refers to product lines and intellectual property licensing. The Infrastructure Software segment relates to mainframe, distributed and cyber security solutions, and fibre channel storage area networking business. The company was founded in 1961 and is headquartered in Palo Alto, CA.

Broadcom Inc

Broadcom is caught in a semiconductor selloff as traders question the returns and financing behind AI infrastructure spending, with CEO Hock Tans warning that some AI investing resembles gambling adding to concerns. Bears see his comments and AI-credit risks as reasons for continued weakness, while bulls argue demand and Broadcoms fundamentals remain intact and view the decline as a buying opportunity.

Cipher Digital, Inc. operates as a Bitcoin mining ecosystem in the United States. The firm is developing a cryptocurrency business. The company was founded in 2021 and is headquartered in New York, NY.

Cipher Digital Inc.

CIFRs steep selloff is being tied to its convertible-note financing and debt exchange, which traders criticize for dilution and poor timing amid concerns about leverage and management execution. Bears fear continued pressure, while bulls argue that its AI/HPC data-center contracts support the longer-term case and view the decline as potentially overdone.

Silicon Motion Technology Corp. engages in the development, manufacture, and supply of semiconductor products for the electronics market. The firm’s products include Flash Controllers, Storage Solutions, and others. It offers embedded and expandable storage, radio frequency integrated circuits, and embedded graphics. The company was founded by Wallace C. Kou in November 1995 and is headquartered in Hong Kong.

Silicon Motion Technology Corp - ADR

Silicon Motion Technology Corp.

SIMO is drawing attention for its growth in AI and data-center storage, particularly boot-drive shipments and MonTitan enterprise SSD controllers, alongside strong results and an upbeat outlook. Many traders see room for further growth, while others point to sharp share-price swings, technical weakness and dilution concerns tied to convertible notes.

UnitedHealth Group, Inc. engages in the provision of health care coverage, software, and data consultancy services. It operates through the following segments: UnitedHealthcare, OptumHealth, OptumInsight, and OptumRx. The UnitedHealthcare segment utilizes Optum's capabilities to help coordinate patient care, improve affordability of medical care, analyze cost trends, manage pharmacy benefits, work with care providers more effectively, and create a simpler consumer experience. The OptumHealth segment provides health and wellness care, serving the broad health care marketplace including payers, care providers, employers, government, life sciences companies, and consumers. The OptumInsight segment focuses on data and analytics, technology, and information to help major participants in the healthcare industry. The OptumRx segment offers pharmacy care services. The company was founded by Richard T. Burke in January 1977 and is headquartered in Eden Prairie, MN.

Unitedhealth Group Inc

UnitedHealths quarterly earnings beat and raised full-year outlook, alongside improved medical-cost trends, are driving attention. Bulls view the results as evidence of a turnaround and welcome the rebound, while skeptics question whether the improvement will last and point to the stocks volatile reaction despite the strong report.

Nebius Group NV is a technology company that provides infrastructure and services to AI builders worldwide. It offers Nebius AI, an AI-centric cloud platform provides full-stack infrastructure, including large-scale GPU clusters, cloud services, and developer tools. The company also operates through specialized brands: Toloka AI, which partners in data for generative AI development; TripleTen, an edtech platform focused on re-skilling individuals for tech careers; and Avride, which develops autonomous driving technology. Nebius Group was founded by Elena Kolmanovskaya, Ilya Segalovich, Mikhail Fadeev, and Arkady Volozh in 1989 and is headquartered in Amsterdam, the Netherlands.

Nebius Group N.V. - Ordinary Shares - Class A

Nebius Group N.V. 

Nebius is drawing attention after a sharp selloff across AI-infrastructure stocks, fueled by concerns about neocloud financing, debt and whether heavy AI spending will generate sufficient returns. Traders are split on whether the rebound from oversold levels signals a recovery or a temporary bounce, with some arguing Nebius is better positioned than more debt-heavy peers.

Pfizer Inc. is a research-based global biopharmaceutical company, which engages in the discovery, development, manufacture, marketing, sales and distribution of biopharmaceutical products worldwide. The firm works across developed and emerging markets to advance wellness, prevention, treatments and cures that challenge the most feared diseases. The company was founded by Charles Pfizer Sr. and Charles Erhart in 1849 and is headquartered in New York, NY.

Pfizer Inc.

Pfizer Inc

Pfizers recent climb toward a 52-week high and a key round-number resistance level is driving discussion, with traders highlighting bullish chart momentum and a defensive rotation into pharma. Others question whether the move can hold, pointing to resistance and the absence of a single clear near-term catalyst.

Aventus Network

AVT is drawing attention as traders watch a volatile, thinly traded rebound for a breakout, focusing on trading volume and resistance levels. Aventus Clouds decentralized-compute and enterprise-appchain updates provide a bullish project narrative, but traders remain divided over whether momentum can persist amid low liquidity and selling pressure.

Trump Media & Technology Group Corp. engages in operating social media and in the technology business. Its brands include TRUTH Social, TMTG+, and TMTG News. It operates through the Media and Truth.Fi segments. The Media segment includes products and services such as advertisement through the Truth Social platform. The Truth.Fi segment relates to customized exchange-traded funds or exchange-traded products invested in America First principles, and bitcoin and similar cryptocurrencies or crypto-related securities. The company was founded on March 28, 2024 and is headquartered in Sarasota, FL.

Trump Media & Technology Group Corp.

DJTs slide to record lows is being linked by traders to concerns about Trumps declining approval and the approaching midterms, alongside doubts about Truth Socials engagement and the companys business fundamentals. Discussion is heavily bearish, though some traders see the decline as a buying opportunity or argue that political headlines alone do not determine the companys value.

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Protagenic Therapeutics Merges With Phytanix Bio In All-Stock Deal: Retail Turns Extremely Bullish

Equity

The new entity will be called Phytanix, Inc., and it will combine the two companies’ pipelines focused on stress-related and CNS disorders.

Protagenic Therapeutics, Inc. operates as a biotechnology company. The firm engages in the discovery and development of therapeutics to treat stress-related disorders including post-traumatic stress disorder, depression, anxiety, and drug & alcohol addiction. It offers PT00114 peptide-based formulations. The company was founded by Garo H. Armen, David A. Lovejoy, and Hartoun Hartounian on February 3, 1994 and is headquartered in New York, NY.

Protagenic Therapeutics Inc

Neutral Sentiment

Shares of Protagenic Therapeutics, Inc. (PTIX) jumped 244% on Monday morning after the company <a target="_blank" rel="noopener noreferrer nofollow" href="https://www.pressviewer.com/profiles/investor/NewsPrint.asp?v=6&amp;b=2612&amp;ID=145678&amp;m=rl&amp;g=1834">announced</a> its merger with private pharmaceutical firm Phytanix Bio Inc.Protagenic said the two companies have entered into a definitive share exchange agreement, under which they will combine in an all-stock transaction.The combined entity will be called Phytanix, Inc., and will bring together the two companies’ pipelines focused on stress-related and central nervous system (CNS) disorders. While Protagenic makes peptides for stress-related disorders, Phytanix Bio specializes in developing medicines manufactured from cannabinoids and "cannabinoid-like" molecules.The combined entity will have five preclinical assets and one clinical-stage asset, Protagenic added.Protagenic executive chairman Garo H. Armen noted that the combination aligns two pipelines with complementary assets and expertise to develop drugs in neuropsychiatry, CNS, and other disorders.Protagenic said that post-combination, pre-financing ownership will be approximately 35% for the company's pre-combination stockholders and approximately 65% for Phytanix Bio stockholders on a fully diluted basis.Protagenic had announced a 1-for-14 reverse stock split of its issued and outstanding common stock earlier this month to bring the company into compliance with the minimum bid price requirement for continued listing on Nasdaq.On Stocktwits, retail sentiment around Protagenic jumped from ‘neutral’ to ‘extremely bullish’ over the past 24 hours while message volume jumped from ‘high’ to ‘extremely high’ levels.<figure class="image"><img style="aspect-ratio:628/65;" src="https://news.stocktwits-cdn.com/Screenshot_2025_05_19_at_10_28_13_AM_png_a07fae3fc6.webp" alt="PTIX's Sentiment Meter and Message Volume as of 10:30 a.m. ET on May 19, 2025 | Source: Stocktwits" width="628" height="65"><figcaption>PTIX's Sentiment Meter and Message Volume as of 10:30 a.m. ET on May 19, 2025 | Source: Stocktwits</figcaption></figure> A Stocktwits user believes the stock could rally further toward $15.<stembedurl>https://stocktwits.com/cjstocksup/message/615100995</stembedurl><a href="https://stocktwits.com/symbol/PTIX">PTIX stock</a> gained over 43% this year but is down by about 48% over the past 12 months.Also See: <a href="https://stocktwits.com/news-articles/markets/equity/netflix-stock-edges-lower-after-jp-morgan-downgrade-despite-higher-price-target/ch0cubqRb82">Netflix Stock Edges Lower After JPMorgan Downgrade Despite Higher Price Target</a>For updates and corrections, email newsroom[at]stocktwits[dot]com.

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