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. Image source: Getty Images 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. “This Stock Could Be Like Buying Amazon in 1997” 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. Paul Summers | Tuesday, 14th July, 2020 | More on: SMT Our 6 ‘Best Buys Now’ Shares Paul Summers owns shares in Scottish Mortgage Investment Trust. The Motley Fool UK has no position in any of the shares mentioned. 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. Enter Your Email Address See all posts by Paul Summers FTSE 100 member Scottish Mortgage Investment Trust (LSE: SMT) has absolutely smashed the performance of the aforementioned index since the start of 2020. Its share price is now 55% higher than where it was in January. The FTSE 100, in sharp contrast, is down almost 20%.Why is this and, importantly, can it last?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…Why is SMT outperforming?That’s easy. In line with its strategy of buying companies offering “the best potential durable growth opportunities for the future,” SMT’s portfolio is made up of some of the biggest tech stocks on the planet. Think online giants Amazon and movie streaming service Netflix. Both have thrived in recent months, thanks to the lockdown. By far SMT’s best performer, however, has been electric vehicle hot stock Tesla. Its share price is up 250% since the start of the year, making it the trust’s largest holding.Aside from its stellar performance, investors in SMT also benefit from a relatively low ongoing charge of just 0.36%. Passively tracking an index like the FTSE 100 via an exchange-traded fund might be even cheaper. But it would be hard to argue that managers James Anderson and Tom Slater don’t offer value for money compared to other professional investors. The FTSE 100’s underperformance isn’t hard to explain either. In contrast to SMT, some of its largest constituents are oil and companies, banks, insurance firms, and airlines. You don’t need me to tell you that none of these have done well in 2020. Can it continue?Here’s where things get a bit tricky. The fact SMT holds some of the most ‘loved’ (hyped) stocks in the world is clearly a blessing right now. However, it could prove a burden if market sentiment turns, perhaps as a result of increasing regulation of the tech sector. In such a scenario, those companies priced to perfection will likely be hit the hardest.Another more-widespread market crash can’t be ruled out either. How many inexperienced traders who have benefited from the recovery will be able to maintain their composure if we experience a significant second wave of the coronavirus? Given our tendency to swing from greed to fear in a heartbeat, I’d say at least some will panic. Remember also that a good number of the stocks SMT holds are very liquid. If there’s another stampede for the exits, people will sell what they can, not necessarily what they want to. In this sense, it might be argued that the FTSE 100 offers a better margin of safety. Then again, value-focused investors have been ‘wrong’ for years.Keep calm and carry onOn reflection, however, I’m staying put. While the staggering rise of some of its holdings does make me nervous, the fact that SMT is diversified across 89 companies should provide some protection in the event of a few experiencing problems. You also need to remember that market moves — even sizeable ones — are unlikely to matter much over a lifetime of investing. The passage of time and the freedom to do nothing remain the private investor’s key advantages when building a nest egg for retirement.So, as tempting as it may be to snatch at profits, my view is that anyone already invested should continue holding and add on any weakness. That’s what I’ll be doing anyway. As a long-term holding for fund-focused, growth-minded investors, SMT takes some beating. Scottish Mortgage Investment Trust has smashed the FTSE 100. I’d continue buying for retirement Click here to claim your copy now — and we’ll tell you the name of this Top US Share… free of charge!