What stock should I buy during a market crash? Our 6 ‘Best Buys Now’ Shares Renowned stock-picker Mark Rogers and his analyst team at The Motley Fool UK have named 6 shares that they believe UK investors should consider buying NOW.So if you’re looking for more stock ideas to try and best position your portfolio today, then it might be a good day for you. Because we’re offering a full 33% off your first year of membership to our flagship share-tipping service, backed by our ‘no quibbles’ 30-day subscription fee refund guarantee. Simply click below to discover how you can take advantage of this. Kirsteen has no position in any of the shares mentioned. The Motley Fool UK has recommended Tesco. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors. “This Stock Could Be Like Buying Amazon in 1997” This P/E is higher than I’d like, but this happens when a stock is particularly favoured. A market crash often brings the value of a stock down and with it, the price-to-earnings ratio, so keeping an eye on this metric can be a good indicator of whether you’ve found a bargain buy.The Tesco share price outperformed the FTSE 100 in 2019. Even during a downturn, people still need groceries, so I think it’s a company that’s likely to weather the storm.Opportunities galoreLooking back to the past, old stock market crashes look like opportunities. While looking forward, future stock market crashes look like risks. This is an important piece of wisdom to remember when looking for stocks to buy during a market crash. Click here to claim your copy now — and we’ll tell you the name of this Top US Share… free of charge! Enter Your Email Address Kirsteen Mackay | Sunday, 16th February, 2020 | More on: TSCO See all posts by Kirsteen Mackay I would like to receive emails from you about product information and offers from The Fool and its business partners. Each of these emails will provide a link to unsubscribe from future emails. More information about how The Fool collects, stores, and handles personal data is available in its Privacy Statement. Image source: Getty Images. I’m sure you’ll agree that’s quite the statement from Motley Fool Co-Founder Tom Gardner.But since our US analyst team first recommended shares in this unique tech stock back in 2016, the value has soared.What’s more, we firmly believe there’s still plenty of upside in its future. In fact, even throughout the current coronavirus crisis, its performance has been beating Wall St expectations.And right now, we’re giving you a chance to discover exactly what has got our analysts all fired up about this niche industry phenomenon, in our FREE special report, A Top US Share From The Motley Fool. Many potential investors and long-term shareholders alike have been asking whether there will be a stock market crash in 2020.This is an open-ended question and one that I don’t have the answer to, but I can understand why it’s being asked. Going by the global headlines we’re bombarded with on a minute-by-minute basis, the world doesn’t seem a very happy place just now.5G is here – and shares of this ‘sleeping giant’ could be a great way for you to potentially profit!According to one leading industry firm, the 5G boom could create a global industry worth US$12.3 TRILLION out of thin air…And if you click here we’ll show you something that could be key to unlocking 5G’s full potential…Political turmoil, coronavirus, Australian bushfires and devastating storms. With so much doom and gloom, it’s no wonder fears of a market crash or impending recession are on the rise.To be prepared is to be forearmed, so if you keep some cash reserves available, you can make the best of a bad situation if a market crash happens in 2020.Rich pickingsIf I was to buy stocks during a market crash, what would I be looking for? Firstly, I’d look to invest in companies that can withstand the turmoil: long-standing companies with a solid history, such as those found in the FTSE 100. I’d also look for shares paying reliable dividends and a reasonable price-to-earnings (P/E) ratio, ideally below 15.Billionaire Warren Buffett is one of the world’s most successful investors and he takes full advantage of a market downturn to top-up his equity holdings. One of his tips I’d follow is to diversify your holdings. This means buying a mixture of equities from different sectors. Supermarket favouriteTesco (LSE:TSCO), has emerged from a few tough years to be stronger than ever. It’s still king of data, with its Clubcard loyalty card database full of customer secrets.The marketing power of Big Data is well-known, and Tesco has taken full advantage of it. It pioneered the way to gather customer data and use it to benefit both the retailer and its consumer base by tracking shopping habits. We have witnessed this recently as it targets consumers with encouraging ways to eat more healthily and embrace a flexitarian lifestyle.The Tesco Clubcard scheme now has over 19m members and it’s recently launched Clubcard Plus, which requires a monthly subscription payment of £7.99, claiming it can save savvy shoppers up to £400 a year.Tesco has a P/E of 19, earnings per share are 13p and its dividend yield is over 2.5%.