Definition and Origin of "One of Them Days"
"One of them days" is an informal English phrase describing an unusually difficult, chaotic, or unlucky day, often used in personal storytelling and business communication to signal a rough period. The phrase is common in U.S. English and appears in casual speech, social media, and workplace conversations when a single day stands out for stress, losses, or unexpected problems. Financial professionals use it to describe volatile trading sessions, project setbacks, or client interactions that do not go as planned. The expression is not a formal term in finance, law, or science, but it is widely recognized in business English and appears in podcasts, interviews, and company communications.
The phrase gained additional visibility through popular culture and media, where it is used in song lyrics, comedy, and sports commentary to describe a bad day or streak. In market contexts, traders sometimes refer to a sudden drop or spike as "one of them days" when a single session drives outsized moves. The expression fits into a broader set of informal idioms used in finance, such as "one of those weeks" or "one of those months," which help professionals describe repeated or prolonged stress without technical jargon. While no official database tracks the frequency of the phrase, search interest data shows consistent spikes around earnings reports, market crashes, and major corporate news events.
Usage in Finance, Business, and Markets
Trading and Market Volatility
In equity and crypto markets, "one of them days" is often used to describe sessions with extreme price swings, high volume, or sharp moves in major indices. For example, a single day with a multi-percent drop in the S&P 500 or a sudden crypto selloff may be called "one of them days" by analysts and retail traders on platforms like X and Reddit. These phrases help traders communicate uncertainty and risk in plain language, especially during fast-moving events such as FOMC announcements, inflation data releases, or geopolitical shocks. The phrase is not a technical indicator, but it appears frequently in market commentary and social media posts during periods of elevated volatility.
Companies and funds also use the phrase internally when reporting operational challenges, such as a day with system outages, trade settlement failures, or compliance issues. In investor relations, executives may acknowledge a rough trading day or a difficult quarter without overstating the impact, using phrases like "one of them days" to keep communication relatable. The expression aligns with the broader trend toward plain-language disclosure, which regulators and investors increasingly value. For background on market volatility measurement, the CBOE Volatility Index (VIX) provides a formal gauge of expected market swings, and companies like Tesla regularly report on operational and market conditions in their public filings and investor updates Tesla Investor Relations.
Cultural and Business Context
Workplace and Corporate Communication
In corporate settings, "one of them days" is used in emails, Slack messages, and meetings to signal that a day was unusually demanding, error-prone, or stressful. Project managers, sales teams, and customer support staff use the phrase to acknowledge setbacks without assigning blame, helping teams stay aligned during high-pressure periods. The expression is also common in startup culture, where founders and employees discuss long hours, pivots, and unexpected obstacles as part of the journey. In these contexts, the phrase serves as a low-stakes way to validate difficulty while maintaining forward momentum.
Beyond the workplace, the phrase appears in brand marketing, podcasts, and social media campaigns that target business audiences and entrepreneurs. Companies use it in ad copy and content marketing to connect with audiences who relate to daily challenges in startups, investing, and side hustles. For example, financial education platforms and business news outlets often frame articles around the idea of surviving "one of them days" in trading, freelancing, or small business ownership