My Self-Invested Personal Pension (SIPP) has performed incredibly well recently. Over the past two years, its value has more than doubled thanks to regular contributions and good performance from my stocks and funds.

Interested in knowing what my largest individual stock holdings are today? Read…

Big technology stocks offer value

The largest stock I have now is… alphabet (NASDAQ: GOOG), owner of Google, YouTube, and Waymo.

This stock has come under a lot of pressure in recent years due to concerns that artificial intelligence could hurt its business model (and that remains a risk). But I stuck with it. And now I see the rewards. This year, they are up nearly 35% (hitting all-time highs this week).

Investors seem to have realized that Google Search isn't going away anytime soon. They also realized that with its fast-growing cloud computing division and amazing self-driving car unit, this company still had a lot of growth potential.

Is it too late to consider buying these tech stocks? i don't think so. It is currently trading at a forward-looking price-to-earnings (P/E) ratio of 24. In my opinion, this is a very reasonable valuation.

Leading the artificial intelligence revolution

My second largest possession currently Nvidia (Nasdaq: NVDA). It is the world's largest artificial intelligence (AI) chip designer (and the largest company overall).

This stock has been a great investment for me. I first purchased it for my SIPP in 2022, before ChatGPT launched. Today, my account shows a 690% gain on the stock. No one will complain about this kind of comeback in three years.

Looking to the future, I see potential for further gains here as the global AI build is still in its early days and demand for Nvidia chips is high. The medium-term price target is around $250.

However, I expect the stock to be volatile. If there is any sign of a slowdown in AI spending, this stock will likely see a pullback (I think it's worth considering pullbacks).

The highest quality Mag 7 company

Finally, the third largest individual holding of stocks is Microsoft (Nasdaq: MSFT). It is a technology conglomerate that operates in a range of fields including business productivity software, artificial intelligence, cloud computing, video games, social media, and more.

This company doesn't get as much attention as most other Magnificent 7 stocks. I think that's a shame. Because, in my opinion, they are probably the highest quality company out there. Not only is it highly profitable, it is a very reliable performer.

It has definitely been a good investment for me. I first bought it in 2019 for around $140, and since then the price has gone up to around $515.

Today, this stock looks a bit expensive (P/E ratio is around 33). But I still think it's worth a look.

Competition from other tech giants is a risk, but as a part owner of OpenAI (the owner of ChatGPT), it appears to be well positioned for growth. Currently, several Wall Street analysts have price targets between $650 and $675.