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Sarah Ponczek

Stay informed with Sarah Ponczek’s coverage and analysis.

Stocks’ worst start in 20 years challenged traders on Monday
Finance
Stocks’ worst start in 20 years challenged traders on Monday
By Sarah Ponczek and BloombergJanuary 4, 2021
S&P 500-Graph-Increase
Finance
S&P 500 rallies to close the year at a record high
By Vildana Hajric, Sarah Ponczek and BloombergDecember 31, 2020
NYSE-Trader-Wall Street
Finance
Market-wide stock trading halts 15 minutes after S&P 500 falls 7%
By Sarah Ponczek, Vildana Hajric and BloombergMarch 9, 2020
Morning commuters stand past the stand-alone TAP (Transit Access Pass) validators at the transfer p
Putting ‘Abysmal’ in Context: Wall Street Reacts to Jobs Report
By Sarah Ponczek, Reade Pickert and BloombergMarch 9, 2019
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Success
Mark Cuban says he has the solution to growing income inequality, and it's to reward every employee—from CEO to janitor—with company stockplaceholder alt text
By Sasha RogelbergJuly 20, 2026
Cybersecurity
OpenAI says its AI models secretly broke out of a secure test environment and hacked into AI company Hugging Face in order to cheat on an evaluationplaceholder alt text
By Jeremy Kahn and Emily ForliniJuly 21, 2026
AI
Mathematicians grapple with a ‘very rapid and very unsettling change’ as AI cracks yet another century-old problemplaceholder alt text
By Eva RoytburgJuly 21, 2026
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