John Ondercin

John Ondercin is a seasoned options trading educator and author celebrated for his clear, jargon-free writing that makes complex financial concepts accessible to beginners and aspiring traders alike. He excels at providing practical, step-by-step guidance on options basics, trade examples, value calculations, and advanced strategies like the impact of time, probability, and the Greeks.

CoreWeave Shares Surge 5.7% as Nvidia Invests $2 Billlion

CoreWeave Shares Surge 5.7% as Nvidia Invests $2 Billlion

AI-focused cloud computing provider CoreWeave’s (CRWV) share price jumped 5.7% as Nvidia announced that it purchased $2 billion worth of its publicly traded shares. CoreWeave’s stock is currently trading at  $98.31. The company’s share prices grew 37% in January 2026, as AI cloud computing is aggressively expanding and is in high demand. CoreWeave is often … Read more

U.S. Health Insurer Stocks Slide on Proposed Medicare Payment Cuts

U.S. Health Insurer Stocks Slide on Proposed Medicare Payment Cuts

The shares of the US health insurer fell, responding to the Trump Administration’s proposed Medicare Advantage Plans for 2027. According to the Centers for Medicare and Medicaid Services (CMS), payments will increase by an average of 0.09% to private issuers.  Shares of major health insurers, including UnitedHealth (UNH), CVS Health, and Humana (HUM), witnessed a … Read more

Tesla Shares Slip Ahead Of Q4 Earnings As Europe Demand Slows

Tesla Stock Slides As Investors Eye Q4 Earnings

Investors are turning cautious on Tesla, Inc. ahead of its closely watched Q4 2025 earnings report, scheduled for release after the market close on January 28, 2026. Tesla, Inc. (TSLA) shares fell to $435.20, down $13.86, or 3.09%, as traders de-risked positions, amid intensifying global competition. The pullback underscores growing uncertainty around Tesla’s near-term fundamentals, … Read more

Amazon Layoffs Trigger AMZN Stock Dip While Pelosi Boosts Alphabet Exposure

Amazon Layoffs Trigger AMZN Stock Dip While Pelosi Boosts Alphabet Exposure

Amazon (AMZN) shares came under pressure on Monday as the company is about to begin what it calls its “Phase 2” workforce reduction, eliminating approximately 16,000 roles, reportedly starting from January 27-28, 2026. Amazon.com, Inc. (AMZN) closed at $238.42, down $0.74 or 0.31%, at 4:00:01 p.m. EST. The move brings Amazon’s total restructuring target to … Read more

S&P 500, Dow, Nasdaq Advance as Apple, Meta, and Microsoft Lead Tech Rally

S&P 500, Dow, Nasdaq Advance as Apple, Meta, and Microsoft Lead Tech Rally

U.S. stocks closed higher, with the S&P 500 (^GSPC) rising 34.62 points, or 0.50%, to 6,950.23, the Dow Jones Industrial Average (^DJI) gaining 313.69 points to 49,412.40, and the Nasdaq Composite (^IXIC) advancing 100.11 points, or 0.43%, to 23,601.36. The day’s gains were led by Apple stock (AAPL), Meta Platforms (META), and Microsoft (MSFT), forming … Read more

NVIDIA Invests $2 Billion More in CoreWeave, Offers New Chip

NVIDIA has significantly deepened its strategic bet on CoreWeave, committing about $2 billion in new equity to support what executives are calling the largest AI infrastructure buildout in history. The investment, disclosed in an SEC Form 8-K, nearly doubles Nvidia’s ownership stake to about 11.5%, following the purchase of approximately 23 million additional Class A … Read more