Oppenheimer: Tech dominance is built on fundamentals, not irrational exuberance

Yields

NDX cautious up , medium term, interviewee explicit

explicit

RUT

Oil

Metals

USD

Goldman Sachs 9.0
Investment Bank $2500.00B
Peter Oppenheimer 9.0

Oppenheimer: Tech dominance is built on fundamentals, not irrational exuberance

ndx

I don't think we're in a bubble at this stage. Valuations are high but not extreme. The NASDAQ had a correction but recovered as fundamentals reasserted themselves. We're looking for a broadening out over the coming months. Tech sector dominance is supported by strong profit growth and fundamentals rather than speculation. The current capital expenditure is increasing but funded mainly from cash flow rather than excessive debt or equity issuance. Market breadth and diversification supports a cautious upward stance rather than a bubble scenario.

10/21/2025 3:09:27 PM	long term up	61 days later	+2.34%	+2.34%
10/15/2025 9:58:39 AM	short term cautious down	5 days later	+1.91%	-0.95%
10/4/2025 1:00:28 AM	medium term up	21 days later	+3.37%	+3.37%
9/12/2025 11:13:00 PM	medium term up	21 days later	+2.82%	+2.82%
9/11/2025 4:14:18 PM	short term up	5 days later	+0.55%	+0.55%
9/9/2025 5:53:04 PM	medium term up	20 days later	+3.48%	+3.48%
9/1/2025 4:18:49 PM	medium term up	20 days later	+6.59%	+6.59%
8/6/2025 7:05:41 PM	medium term cautious down	20 days later	+0.75%	-0.38%
8/5/2025 6:04:18 PM	medium term up	20 days later	+0.90%	+0.90%

Show all ndx results

You put out a report a few weeks ago. You said the signs of a bubble are rapidly increasing valuations, high concentration, and also vendor financing. We're seeing all three. But then you go on to say it's not quite a bubble, at least not yet. So, if we're seeing that already, why isn't it a bubble?

Frank
Peter Oppenheimer

There's an extent I think that we tend to see those factors playing out. We've had a strong period of returns particularly driven by tech stocks in the US, but that is not related to AI specifically. Tech stocks and the US market driven by them have been outperforming for 15 years underpinned by extremely strong profit growth. So dominance of these large companies in tech has been based on fundamentals not speculation or irrational exuberance about the future. So I think it's really supported by fundamentals so far. Of course that could change as speculation builds but I don't think we're in a bubble at this stage.
Valuations are elevated when we talk about the mag 7 and many names but you say they're not technically stretched. How do we know when they're really stretched beyond fundamental basis?

Frank
Peter Oppenheimer

Bubbles build around narratives that excite investors and companies which pushes valuations to irrational claims on future growth. The five biggest tech stocks represent around 16 to 17% of the global stock market but their valuations, with mid-20s PEs over two years on average, are not at bubble levels like in 2000 when they were around 50. So we've seen performance and concentration, but valuations are high and not extreme, so we're not there yet.
Why is everybody so worried about a bubble if there are no clear signs right now?

Frank
Peter Oppenheimer

Some signs of excitement building could attract more capital and companies and lead to a correction. The Nasdaq was down 20% earlier this year but recovered as fundamentals reasserted themselves. A correction is possible but not a bubble. There's also a massive ramp-up in capex and questions about returns on that capex. History shows technology evolves and other companies can benefit from embedded capex. We're looking for broadening in the market over the next months.
Are there other metrics besides earnings for sustainability of this trade?

Frank
Peter Oppenheimer

Productivity drives tech advances substituting labor. There's a massive ramp in capex but no vast increase in debt or equity financing yet. Past bubbles had huge capital inflows and IPO sprees which we don't see now. Companies fund capex mainly from cash flow. Signs of vendor financing exist but not broad-market exuberance yet. Diversification is playing out with many regions and sectors benefitting.
Does it matter if it's a bubble for most index investors?

Frank
Peter Oppenheimer

It matters because dominant companies form a large part of indexes, with the five biggest tech stocks nearly a quarter of the US index. If they fall, it impacts the broader index. Earlier this year a derating in these companies lowered the broader index. Staying invested with broader exposure across regions and sectors is advisable.

SignalTube

markets at a glance