TSM
Taiwan Semiconductor Manufacturing Company Ltd.
stock NYSE ADR

You’re anchoring too hard to your old buy price. The market doesn’t care that you bought AMD at $20 or TSM at a quarter of today’s price what matters is whether you think the business will outperform from *today’s* valuation onward.
A lot of people make the mistake of refusing to add to winners because “it already went up too much,” then they end up rotating into worse companies just because they look cheaper. Expensive stocks can stay expensive for years if earnings keep compounding.
You also don’t need to go all-in at current prices. If you still believe in the long-term thesis, just keep DCA’ing gradually and accept that future returns probably won’t be as insane as the post-2020 run. That’s normal.
Personally I’d avoid forcing money into random small caps just because mega caps feel psychologically expensive. “Looks cheaper” and “is undervalued” are very different things.

I have exactly this problem. I have AMAT LRCX TSM NVIDIA KLA on ASML AMBIQ AMD . They are all up 100-300% and have made a considerable difference to the growth of my conservative portfolio in the last couple of years but I never added to them and can’t bring myself to now…. The only one I did add to was GOOG . If I’d done the same with the others I’d be laughing

Man I don't think it's a good idea to ask for stock prediction advice from somebody that missed the boat on this one. If you want my take though, I don't think there's anything you'd see right now and think "yeah that's an undervalued play I have to get my hands on". Hardware manufacturing is notoriously hard to scale, and the market has consistently, aggressively trawled upstream of the manufacturing chain to try and engage in supply/demand arbitrage. This is not to say that they won't continue to appreciate in value - they absolutely can - it's just that taking a fresh position now would essentially amount to speculation about the general health of the market and the sustainability of the AI datacenter buildout.
On the photonics front, outside of the components producers such as AXTI and AAOI (for eg), growth that isn't speculative would still lie in the domain of mature companies with appreciable SiPh arms. Something like AVGO, MRVL, TSM, UMC, GFS. It's not going to get you a 10 bagger by any means, but at least you could see them growing into their current valuations.
Based on earnings reports from the semiconductor equipment side though (ASML, AMAT, LRCX, KLAC), the lead times for equipment bookings are increasing despite ramping production, not decreasing, so it's entirely possible this AI extension still has legs. The moment the booking lead times hit an inflection point though, I would liquidate quite a bit. That's my plan, at least.

It’s the same what TSM is doing. incredibly tough. But yeah, ASML needs this just as much as Tata.
Asml has like only 3 or 4 customers. They would want to increase their customer base.

The old cost basis is messing with your head. The market doesnt care where you first bought AMD or TSM. New money needs a new reason at today’s price. If you cant explain why the next dollar still belongs there at this valuation, it goes into VTI until the answer is cleaner. Corrections help only if the business read is still intact, not because the chart got cheaper than last week. Small caps arent the cure for large caps running. They just give you different ways to be wrong. Keep the core boring. If you want single names, cap the weight, build in pieces & judge them against today’s earnings, margins, capex, valuation & risk. Your 2021 entry was not a permanent discount card.

All the tech stocks have been doing really well, bought in around 2021-ish with names like AMD TSM etc as well as the usual VTI. The thing is I didn't put in much capital back then since I was younger and now that I've saved up more capital to deploy to the market I'm not sure what to put my money in other than the VTI anymore. Even if the fundamental is still strong and I believe in the company for the next couple years, paying at over 4 times what I brought in years ago feels kinda crazy.
Just keep DCA'ing/deploy captial during corrections into the ones I believe in? start looking for other smaller market cap stocks that haven't had a run yet? not exactly sure what to do in current markets.

New investor here, in early 30s with moderate risk appetite. I’m considering the following individual stocks that make up a total of 20% of my portfolio. Is this diversified enough and good to go? :)
45% tech/semicon: NVDA, TSM, GOOG (10% each), MSFT, AMZN, NBIS (5% each)
20% memory: MU, SNDK (10% each)
15% space: RKLB, ASTS, PL (5% each)
10% lifestyle: RDDT, NFLX (5% each)
10% regional/others: Sony, Tencent (2% each), remaining 6 penny stocks - HOVR, AMPX, HGRAF, RZLV, DRTS, SLS (1% each)

It’s riskier yes but my individual holdings have outperformed voo. I hold a lot of voo but certain stocks have been both great performers and made it easy to sleep at night. For years AVGO just kept quietly grinding higher. TSM has been that way too. I don’t worry much holding googl, up or down either. It’s a monster. Unless a paradigm shifts, it will be fine. I’ve also owned AZN for a while and it is great too, just a great performer. I personally wouldn’t own individual stocks if wasn’t trying to out perform VOO/. The SP500. Besides those i  have stocks Im less committed to but those are ones that have been solid and steady growers. I also own msft, which seems like dead money for the last three years. Maybe it will wake up. I don’t hold huge percentages 

I hold individually: INTC, AMD, MU, NVDA, TSM. I should look for a good ETF. Any suggestions anyone?

afaik, all the empirical studies to test multi-factor models used equity only US value weighted stock market portfolio as MKT. So academia proved US TSM is efficient (the premise of this debate).
(I have not seen any empirical study that proved what OP proposed is efficient. Please correct me, if wrong)

Idk why people think you're flexing... Everyone is at a different stage of their investing journey. I think your portfolio looks great. I really like the mix of ETFs, megacaps (MSFT, AAPL, GOOGL) and then a few higher spec/risk names too. I try to invest the exact same way. I'm in NVDA, MU, TSM, and META right now as my megacap choices, and I'm in RDDT, NBIS, SNDK, and DRAM as my more spec / higher risk plays. Keep up the great work.

The P/E (current and forward) of ASML is much higher than TSM though.

Another downside of ASML is that it can only sell to a limited number of customers, whereas the number of customers willing to pay exorbitant prices for TSM is going to explode as every major AI/tech company gets into making custom silicon

If it makes you feel better, I have a PhD in silicon photonics and I never saw it coming either. Neither did many of my colleagues, and definitely not at this blistering intensity. People have been saying photonics is the next thing for the last 15 years. The original plan was for photonics to be introduced in roadmaps in the early 2030s, but due to the intense developments in AI hardware a lot of these roadmaps from fabs (TSM, NVDA, MU) have been brought forward significantly to fill these gaps.
I don't think you should feel bad about missing out on these. It's equally likely that you buy a small cap in a sector that will never moon as photonics has, and even industry professionals are prone to missing them.

Right off the bat, you have heavy exposure to Big Tech. So, while you think you are diversified, you really aren’t diversified at all.
I think you have a pretty solid portfolio but you definitely have some blind spots. Most notably you are missing two of the biggest future bottleneck industries, which are Photonics and Power/Energy Generation.
If I were you, I would sell Amazon and Meta. No need for these stocks and I think both are incredibly overrated.
Instead, if I were you, I would buy GEV- GE Vernova and LITE- Lumentum Holdings. This significantly improves your portfolio construction and brings you into new sectors while at the same time gives you a real chance to achieve better returns than if you were to keep AMZN and META.
Now, your portfolio would consist of:
- NBIS- Neocloud
- MU- Memory
- VRT- Liquid Cooling (future bottleneck)
- GOOGL- One of the absolute best companies in the entire world. Many different revenue streams.
- AVGO- Custom ASICs and Future CPO Giant
- RKLB- Space Economy. Potentially Massive TAM.
- TSM- Foundry and AI Monopoly Giant (Maybe sell this one too)
New Additions:
- GEV- Power/Energy Generation consisting of both Natural Gas and Nuclear plus Electrification.
- LITE- The King Of Photonics. In its Infancy. Just made the S&P 500 in late March and the NASDAQ 100 last week or the week before.
Other Potential Additions To Consider:
- BE- Bloom Energy= Provides off the grid energy for AI Data Centers.
- CAT or FIX- Caterpillar or Comfort Systems USA= These are still AI Infrastructure Plays not ones that are non Technology stocks. You need some of that in your portfolio.
One personal preference is I too would swap TSM for DRAM- Roundhill Memory ETF to gain access to more of the Memory Trade plus the Data Storage names as well.
For the most part, your thinking is in the right place but there are some minor tweaks that you can do that I believe would take your current portfolio, which I would give you a solid “B” or an 84 out of a 100 and I think if you ditched AMZN and META for GEV and LITE, I would then give you an “A-“ grade or an 91/92 out of a 100.
I actually wrote all this out too and these thoughts are of my thoughts and ideas and I personally own many of these stocks including NBIS, VRTV, RKLB, GEV, LITE, DRAM, and BE. I have previously own GOOGL, AVGO, MU, CAT, and FIX until about two weeks when I consolidated my portfolio into the stocks I stated that I own in the sentence prior.
Best of luck OP!
Disclosure and Disclaimer: While I work in Finance, I am not your Financial Advisor. These feelings are just my own personal thoughts of what I would do personally if I was in your shoes. What you choose to do with your money is completely and entirely up to you. Not financial advice. Just passing along information for educational purposes. Always do your own research.

A beginner investor in early 30s with moderate risk appetite - no debts or commitments. After setting aside emergency funds + potential upcoming expenses, I’m looking to invest the rest as a lump sum for the long term.
Would appreciate any advice to refine this portfolio. TY! :)
**\[ETFs 60%\]**
*Non-US resident, going for Irish-domiciled ETFs*
40%: SPYL
30%: XNAQ
10%: EIMI
20%: SMH, XDEM, AVSG, DDGC (5% each)
**\[Local blue-chip stocks 20%\]**
Split across 3 banks with healthy growth and high dividends without taxes
**\[Individual stocks 20%\]**
45% tech/semicon: NVDA, TSM, GOOG (10% each), MSFT, AMZN, NBIS (5% each)
20% memory: MU, SNDK (10% each)
15% space: RKLB, ASTS, PL (5% each)
10% lifestyle: RDDT, NFLX (5% each)
10% regional/others: Sony, Tencent (2% each), remaining 6 penny stocks (1% each)

If it dips more I buy more. I entered at $20, didn't trim any at $130, and bought more on Friday at $107. If it dips more I buy more. And wait till at least $150-200+
Intc sells more CPUs than AMD but it's market cap is less than AMD. intc need to be $150 to catch AMD market cap.
But intc has fabs - cutting edge fabs. Apple is the 1st external client. Huge and picky client. Other clients will jump in in 2-4 months.
Even if intc fabs get just 25% of TSM volume/ business (very conservative) then intc market cap will add 25% of TSM 1.9T market cap, which is 0.5T which is another $100/ share.
So AMD + 25% of TSM = $150+$100= $250 - that is very conservative estimate in today's price. AMD and TSM market caps are gonna grow too...

MSFT is a fun one right now, got big investors dumping it, and Ackman buying it. Time will tell what happens but I think it’s silly betting against Microsoft.
Sony had a solid report and TSM partnership announcement. I bought Sony, I think it has more upside.

Never can go wrong with TSM. Fair value x3.

TSM another great choice. The mother of all advanced chips.

Tepper’s moves always interest me. Aggressively boosting concentration in TSM and MU has my attention 👀