See all posts by Alan Oscroft Alan Oscroft | Tuesday, 14th January, 2020 | More on: SIS “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. 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. Simply click below to discover how you can take advantage of this. In March 2019, my Motley Fool colleague Paul Summers told us he’d sold his stake in Science in Sport (LSE: SIS), as he’d been disappointed by the firm’s earlier promise.It looks like Paul got it right. Although SiS shares perked up a little a few months later, they’ve crashed back and declined around 20% since the time he was selling.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…SIS is one of those ‘jam tomorrow’ investments that could have great long-term growth prospects, but are as-yet-unprofitable and are still in their cash-burn phase. In late 2017, I’d been cautiously optimistic when the shares were at 72p. Two years on, at 42.8p, it’s clear that would have been a bad time to buy.Wait for profit?Many would say wait until the profits start to come in. Yes, you’ll almost certainly miss the biggest potential gains as it’s very likely that a growth share price will have appreciated by the time the firm is making money. But you’ll greatly minimise your chances of holding a crash-and-burn dud.Yet pondering the excitement of finding a growth stock in its early stages for those who don’t mind the risk, I’m still thinking SiS could turn into that big winner.And shares in the sports nutritionist blipped up a couple of percent on Tuesday morning in response to a full-year update, ahead of results due on 18 March.The company described 2019 as having been a landmark year, “representing the first full year of ownership of the PhD brand following its acquisition in December 2018,” and said it “expects to report total sales for 2019 of £50.5m.”Strong growthThat’s way ahead of 2018’s £21.3m, and apparently represents strong growth for the SiS brand in addition to the PhD acquisition. E-commerce sales (which is an essential part of any new business like this) gained 34% to £16.1m, a significant proportion of total sales.Getting the company’s brands into Lidl, Aldi and Tesco has also helped lift UK retail sales by 8%, and international retail is up 44% after a major launch in Saudi Arabia.That all sounds great, so why aren’t I rushing to hit the buy button? It’s all about profits and cash. And there are no real profits forecast before 2021 (not counting the mere £20k suggested for 2020).At the halfway stage in 2019, SiS reported a gross profit of £11.15m with a gross margin of 44.8%. But it was far from converting that to cash to put into investors’ pockets, as it translated to a £0.6m underlying operating loss.The cashAt 30 June 2019, we saw cash and equivalents of £5.03m, down from £8m six months previously, and from £10.66m a year prior at H1 2018. At that rate, it could run out before the end of 2020, unless SiS makes great progress in at least breaking even on the cash flow front as early as possible.My feeling, in line with Paul’s, is that SiS might need a new cash call in 2020 to raise more capital. That would mean dilution, and probably a share price fall.With my Sirius Minerals failure fresh in my memory, I wouldn’t buy SiS right now — but I’ll think again when those results are out and I can reassess the cash situation. 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. Our 6 ‘Best Buys Now’ Shares Image source: Getty Images 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 A small-cap stock I think could be a growth champion in 2020 Alan Oscroft owns shares of Sirius Minerals. 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.