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.

Why Did ROLR Stock Close More Than 436% Higher?

Why Did ROLR Stock Close More Than 436% Higher

High Roller Technologies, Inc. (NYSE: ROLR) shares closed at $18.89, up $15.37, or 436.65%, at 4:00 p.m. EST, and extended gains in overnight trading, rising to $19.84, an additional 5.03% increase as of 1:13 a.m. The surge marked one of the most extreme single-day gains for a NYSE-listed stock in recent months.  Unlike typical short … Read more

Nvidia H200 Faces China Rules Despite U.S. Green Light

Nvidia H200 Faces China Rules Despite U.S. Green Light

The Nvidia H200 (AI GPU) has become the center of a growing geopolitical and regulatory dispute, highlighting what analysts describe as a new regulatory paradox in the global semiconductor market. Amid the discussion around H200, NVIDIA Corporation (NVDA) stock closed at $183.14, down $2.67 (-1.44%) at 4:00:01 p.m. EST, and slipped further in after-hours trading … Read more

Invesco QQQ Slips as Nvidia, Apple, and Microsoft Lead Tech Declines: Fed Policy, CPI Data, and Geopolitics

Invesco QQQ Slips as Nvidia, Apple, and Microsoft Lead Tech Declines

Invesco QQQ Trust (QQQ) closed at $619.55, down $6.69, or 1.07%, during regular trading, before slipping a further 0.12% to $618.81 in overnight trading. The slip reflects mounting pressure on large-cap technology stocks and shifting investor sentiment across U.S. equity markets. The exchange-traded fund, which tracks the Nasdaq-100 Index (NDX), has struggled to extend its … Read more

BigBear.ai Shares Fall 3.4% as Analysts Maintain ‘Hold’ Amid Revenue Slump

BigBear.ai Shares Fall 3.4% as Analysts Maintain ‘Hold’ Amid Revenue Slump

Columbia-based AI and data analytics service BigBear.ai’s stock dropped 3.4% on Wednesday as major analysts revised their ratings to hold. The analysts’ action followed as a cumulative effect of multiple factors, including a 20.1% revenue dip, volatile government contracts, and law firm probes into possible security issues. BigBear’s stock saw a massive 103% growth in … Read more

Wall Street On Edge: S&P 500 Slips As CPI Holds And JPMorgan Kicks Off Earnings

S&P 500 Slips As CPI Holds And JPMorgan Kicks Off Earnings

U.S. equities retreated modestly on Tuesday, with the S&P 500 (SPX) slipping from recent record territory as investors weighed steady December inflation against cautious signals from the opening wave of earnings season. The S&P 500 Index (^SPX) ended the session marginally lower, down 13.53 points, or 0.19%, at 6,963.74. While the broader market remains near … Read more

U.S. Signals Approval for Nvidia H200 AI Chip Sales to China With New Export Rules

U.S. Signals Approval for Nvidia H200 AI Chip Sales to China

Reports released by the Department of Commerce on Tuesday (13 January 2026) indicate that the U.S. government has approved chipmaker NVIDIA to sell its advanced AI-powered processors in China. Washington had previously restricted the sale of H200, NVIDIA’s second-most advanced semiconductor, due to concerns that the chip could give China’s technology an advantage over the … Read more