Are you on the lookout for UK growth stocks?If so, get this FREE no-strings report now.While it’s available: you’ll discover what we think is a top growth stock for the decade ahead.And the performance of this company really is stunning.In 2019, it returned £150million to shareholders through buybacks and dividends.We believe its financial position is about as solid as anything we’ve seen.Since 2016, annual revenues increased 31%In March 2020, one of its senior directors LOADED UP on 25,000 shares – a position worth £90,259Operating cash flow is up 47%. (Even its operating margins are rising every year!)Quite simply, we believe it’s a fantastic Foolish growth pick.What’s more, it deserves your attention today.So please don’t wait another moment. Paul Summers | Thursday, 28th January, 2021 | More on: SEE Get the full details on this £5 stock now – while your report is free. FREE REPORT: Why this £5 stock could be set to surge The share price of one of my longest-held stocks has been motoring in recent weeks. Since the beginning of January, the company’s valuation has soared 75%.So, what is this hot stock and why is it the flavour of the month? And should I lock in gains or buy more for my ISA? Here’s my take.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…The soaring SEE share priceThe name of the company in question is Seeing Machines (LSE: SEE). The Canberra-based business develops and supplies tech that monitors levels of fatigue and distraction in drivers. But we’re not just talking about cars here. The adaptability of its products means that Seeing can have its fingers in many sector pies, including off-road, fleet and aviation. As one might expect when it comes to the adoption of new technology, however, progress has felt painfully slow at times. Multiple fundraisings have tried investors’ patience, as has the ‘pop and drop’ behaviour of the share price. That said, many owners of the stock are, like me, perhaps in a more forgiving mood these days, I feel.The gains seen in the SEE share price over the last few weeks appear to have been in anticipation of news released yesterday. This relates to confirmation that the company will partner with US computing giant Qualcomm Inc in designing a driver monitoring system. Perhaps most importantly for those already invested, CEO Paul McGlone stated that Seeing expects this relationship “to deliver significant incremental volume” on top of its existing business plan.Having seen my stake in Seeing Machines rise so spectacularly since the beginning of 2021, I’m now left with a quandary.Should I sell now or buy more?One argument for selling is that some traders will seek to lock in some profit soon. This will likely make the SEE share price volatile or certainly more volatile than your typical FTSE 100 stock. As mentioned earlier, this is nothing new to those already invested. Back in June 2018, Seeing hit a share price high of almost 13p. In less than 12 months, it was back down at 3p. In the March 2020 market crash, it fell to as low as 1.7p. This is most definitely not a share for the faint-hearted. If I was a prospective investor now, I’d definitely go in with my eyes open. On the other hand, I find it hard to overlook the importance of SEE’s tech. Based on over 20 years of research, its AI driver safety systems already save lives and should continue to do so as safety features are mandated around the world. The link with Qualcomm could also lead the AIM-listed company to hit the radars of tech-obsessed investors across the pond. This could usher in more buying and more share price momentum. On a long enough timeline, I can even imagine the company being of interest to a deep-pocketed suitor. Not that such an outcome can be guaranteed, of course.Staying diversifiedI suspect I will retain my full position for now. But I need to ensure my position doesn’t become too large relative to my other holdings. A concentrated portfolio where only a few stocks dominate can be very risky if some fail. Some diversification is essential. For now, however, I’ll simply toast this development and salute the recent uplift in the SEE share price. Enter Your Email Address 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. 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. Image source: Getty Images. Paul Summers owns shares of Seeing Machines Ltd. 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. Simply click below to discover how you can take advantage of this. Our 6 ‘Best Buys Now’ Shares See all posts by Paul Summers The SEE share price is up 75% in January. Should I sell this hot growth stock now?