Hargreaves Lansdown investors are buying these FTSE 100 stocks! Should I join them?

These three FTSE 100 stocks were most bought entire Share UK and international via Hargreaves Lansdowne last week. But should I buy it for my own stock portfolio?

Scottish Mortgage Investment Trust

Technology investors Scottish Mortgage Investment Trust (LSE: SMT) has become the most popular stock with Hargreaves Lansdown clients. It accounted for 5.56% of all purchase orders in the past week.

I like the trust because it gives investors exposure to some white-hot growth sectors. Industries like food delivery, electric vehicles, semiconductor manufacturing and e-commerce will all be strongly developed as themes like digitization and decarbonisation click through the gears.

However, I am not prepared to buy Scottish Mortgages shares. The demand for technology stocks in recent years has meant that many stocks are believed to be overvalued. I wouldn’t be surprised to see this business continue to fall in price if worries about the global economy rise again.

A series of troubling news from key ownership didn’t help my confidence either. last week, Tesla announced another mass recall because the steering wheel on the Model Y SUV fell on several vehicles.

Legal & General Group

I would rather invest my money Legal & General Group (LSE:LGEN) instead. I haven’t bought it yet, but confidence in the stock has improved after last week’s financial release which underlined the resilience of the business.

Despite the difficult economic background, operating profit is still expected to increase by 12% in 2022.

I expect sales here to increase significantly in the long term, due to favorable demographic changes. More specifically, the growing elderly population means that the demand for pensions and other retirement benefits should increase.

I also like Legal & General because of its fantastic cash generation. This helped the Solvency II capital ratio reach 240% this month, which is good news for investors looking for market-beating dividends.

The company recorded 2.63% buy orders on the Hargreaves Lansdown platform over the last seven days.

Rolls-Royce Holdings

Rolls-Royce (LSE: RR.) Shares accounted for 2.1% of total buy orders through Hargreaves Lansdown last week. But I have no intention to participate in the stampede for its shares.

Rolls-Royce’s share price continues to rise, thanks to excellent trading updates from airlines around the world. Higher flying activity boosted the FTSE company’s service revenues along with orders for engines.

Data shows that the industry continues to recover rapidly. The International Air Travel Association said total global traffic rose 67% year-on-year in January, helping to ease China’s Covid-19 lockdown. In addition, the traffic was at a level of 84.2% in January 2019.

However, I put off from investing by the promotion of debt Rolls carries. At £3.3bn, the company’s net debt creates uncertainty over how it will finance its hugely expensive growth programs such as developing new jet engines. This also raises doubts about the amount of dividends in the future when the company finally comes up with a dividend policy.

With Rolls-Royce also battling supply chain issues and high cost inflation, I’d rather buy another FTSE 100 stock today.