https://www.investing.com/news/commodities-news/us-oil-prices-rebound-after-tumbling-to-lowest-since-june-2017-on-economy-fears-1730597

https://www.investing.com/analysis/cryptocurrency-2018-year-in-review-the-crash-heard-around-the-world-200370829

https://finance.yahoo.com/news/u-holiday-retail-sales-strongest-025100045.html

https://www.investing.com/news/commodities-news/gold-powers-to-sixmonth-high-as-turmoil-fires-up-haven-demand-1730638

https://www.investing.com/news/economy-news/top-5-things-to-know-in-the-market-on-wednesday-1730692

http://openmarkets.cmegroup.com/14500/what-makes-a-bear-market

https://www.investing.com/news/commodities-news/oil-down-3-pushing-wti-under-45-on-christmas-eve-1730266

https://www.cnbc.com/2018/12/24/us-stock-futures-fall-slightly-as-the-dow-attempts-to-rebound-from-its-worst-week-in-a-decade.html

https://www.nasdaq.com/article/new-etf-assets-spike-as-markets-fall-cm1073669

https://www.cnbc.com/2018/12/24/tesla-cut-prices-in-china-and-will-pay-for-missed-tax-credit.html

https://www.cnbc.com/2018/12/24/stocks-making-the-biggest-moves-premarket-tsla-fb-aapl-cs–more.html

https://www.investing.com/news/commodities-news/early-winter-weather-puts-us-safehaven-corn-planting-in-doubt-1729875