Disclaimer: I am NOT promoting AI investing or any of these specific ETFs or stock. Just providing information for discussion while personally trying to identify AI opportunities.
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Here are two pretty comprehensive Investopedia pages:
Generative AI
https://www.investopedia.com/generative-ai-7497939#toc-the-bottom-line
How To Invest in AI
https://www.investopedia.com/how-to-invest-in-ai-7504987
Excerpt (Bold added):
Best AI ETFs
iShares Exponential Technologies ETF (XT): XT is a large capitalization fund that selects global stocks trying to disrupt their industries. The disruption also includes AI technology stocks, which make up nearly half of the fund. The other half of the fund invests in healthcare and industrial stocks, which are also actively looking at how AI might make an outsized difference in their more mature industries. This fund has an expense ratio of 0.46% and an annual dividend yield of 0.70%.
Defiance Machine Learning & Quantum Computing ETF (QTUM): QTUM has only $112 million under management. The fund invests in companies looking to commercialize their research and development in quantum computing systems. Its benchmark is the BlueStar Quantum Computing and Machine Learning Index. This fund has an expense ratio of 0.40% and an annual dividend yield of 0.45%.
ROBO Global Robotics & Automation Index ETF (ROBO): ROBO invests in companies focused on robotics, automation, and artificial intelligence and invests in both growth and value stocks. The fund’s expense ratio is 0.95%, and it has an annual dividend yield of 0.17%.

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And also here's a Motley Fool article that looks at
Excerpt (Bold added):
Best AI ETFs to buy in 2024
Global X Robotics & Artificial Intelligence ETF (NASDAQ:BOTZ)
ROBO Global Robotics and Automation Index ETF (NYSEMKT:ROBO)
iShares Robotics and Artificial Intelligence ETF (NYSEMKT:IRBO)
First Trust Nasdaq Artificial Intelligence ETF (NASDAQ:ROBT)
https://www.fool.com/investing/stock-market/market-sectors/information-technology/ai-stocks/ai-etfs/
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MF has also identified PLTR as
A Once-in-a-Generation Investment Opportunity: 1 Artificial Intelligence (AI) Growth Stock to Buy Now and Hold Forever

https://www.fool.com/investing/2024/02/23/a-once-in-a-generation-investment-opportunity-1-ar/
I am clearly NOT a T/A guy, BUT I do mess around with them. PLTR's chart is an interesting one, with a parabolic rise at the beginning of Feb, which has partially been worked off since. May have just identified a candidate to consider for a play. That said, analysts are broadly DOWN on this pup!

IMO, AI only happens to be the current use of a term to wrap itself into so many areas of computing. I don't let the term in particular cause me to move one way or another, relative to my positive bias towards investing into the broad 'computing world'. AI only became a new term for another area of tech, and something new for the investment writers and tv folks to write and talk about as a 'new' miracle in tech. Oh, well.....this could be a new discussion unto itself.
AI or whatever one chooses to name as investing in the area of tech. has many sectors and companies involved. Those (science, research, etc.) who have the ideas of how to use the quantum speed of computing (Nvidia) and others providing the product(s) to continue this forward progress will continue to benefit. Quantum computing is more than Cloud storage and replay speeds for instant replays of real time sports action.
Past (back to October, 2019) quantum computing threads.
Searching this word at MFO finds writes that do not involve quantum computing. However, the link above takes one to some writes and one does not have to be read past the October, 2019 post; as related to computing. Reading further past the October, 2019 takes one into a Quantum Fund discussion and other unrelated areas (Quantum Physics).
Enough rambling from me.
Remain curious,
Catch

July 9, 2023, CBS 60 Minutes, AI, 27 minutes Note: A closed caption icon is available at the bottom of the video area, for those with hearing impairments or those needing to view the video without audio 'on'.
Yes, AI has been discussed for several years. I've posted videos and articles about this, too; in prior years....Boston Scientific, Quantum computing, etc.
I remain a technology person from my early days of tear downs of my bicycle, rebuilding a Chevy V-8 engine in my parents home basement at age 16, through formal training in electronics in 1968 and a work career in electro-mechanical, computer interfaced devices.
Today, there are many more areas in which to invest in these continuing expansive sector(s). Your desire and choices will vary from one another.
This 60 Minutes program link should be of interest, regardless of your feelings about the good or bad from high level technology. A portion of this technology keeps us invested in the medical technology area, as well as more broad based areas.
Remain curious,
Catch

Hi @Old_Joe et al I did a quick check and ASML was about $340/share at the end of October, 2022........same time frame that bonds began an upward move in pricing. A sell now is not a bad thing, eh? But, IMHO; remains at this point in time as a special company.
--- Is ASML the only EUV company?
ASML is the only company in the world that owns the technology and makes the machinery to make physical chips out of silicon wafers. Chipmakers like TSMC, NVIDIA and Intel won't be able to make the chips they do without ASML's EUV technology. Jan 23, 2023
--- Is there any alternative to ASML?
ASML competitors include MKS Instruments, Lam Research, Ultratech, Cadence Design Systems and ASM International. ASML ranks 1st in Diversity Score on Comparably vs its competitors.
--- What is the competitive advantage of ASML?
ASML has a competitive advantage. It makes advanced lithography equipment for etching tiny circuits onto semiconductors. It's the sole supplier of the next-generation Extreme Ultraviolet (EUV) chip technology to the semiconductor industry.Mar 30, 2023
--- Why does ASML have no competitors?
The reason why competition and growth opportunities go hand in hand is because ASML is the owner of its own future. ASML faces competition in the industry however its technology is far more advanced than its competitors due to its EUV lithography technology. Jan 24, 2023
--- Who are ASML top 5 customers?
Image result
Intel (US), Samsung Electronics (South Korea) and TSMC (Taiwan) are the world's largest semiconductor companies and are ASML's biggest customers. Intel and Samsung are integrated device manufacturers (IDMs), which design and manufacture their own chips.
--- DRAM: Faster CPU's need faster DRAM for the large data functions.
The 10 Largest DRAM Manufacturers in the World
Samsung – USD 241.60 Billion.
SK Hynix – USD 38.73 Billion. ...
Micron Technology – USD 27.15 Billion. ...
Kingston Technology – USD 12.8 Billion. ...
Infineon Technologies – USD 9.6 Billion. ...
Winbond – USD 3.5 Billion. ...
Powerchip – USD 2.78 Billion. ...
Nanya Technology – USD 2.42 Billion. ...
--- Can't leave out of the list: Nvidia:
What does Nvidia actually manufacture?
Nvidia designs and sells GPUs for gaming, cryptocurrency mining, and professional applications, as well as chip systems for use in vehicles, robotics, and other tools.
OTOH: semiconductor etf's list SMH etf, Van Eck has very nice long term results, as with FSELX, an early offering from Fido's select funds front running sector investing from the mid-80's,
Quantum, 2019 discussion NOTE: The Nature Magazine link is no longer available without subscription. It was a very insightful write.
I went to school in the early 80's learning about 1's and 0's and hexadecimal numbers and basic programming to 'boot' an early Computer Automation NAKED MINI/ALPHA 16 computer that weighted a bunch (75 lbs, with power supply), with a total memory of 32K, if both 16k boards were installed. I never got the 'feeling' for programming; not unlike art, which I enjoy, but I'm not a very good painting artist. A coworker got the 'feeling' programming and moved forward to work for Ross Perot's EDS electronics/programming division. I preferred the hands on of point A to point E of a computer driving electro-mechanical devices; and having to discover what section failed, and why.
Lastly, for the good and bad of tech.; I still 'heart' this space in investing.
Remain curious,
Catch

@Old_Joe
Don't you love Matt Levine?
I sure he could explain quantum mechanics easily

@shipwreckedandalone I wonder if the T-Rexes and other dinosaurs, when they spied the Chicxulub asteroid descending towards them during the Cretaceous period, thought, "There is nothing new under the sun." Or if the Neandertals thought that when they saw the homo sapien tribes approaching? Or when a Sumerian King first saw a wheel rolling towards him in Mesopotamia? Or what the royals in Europe thought of American and French democracy? Or what the Newtonian physicists thought when they first heard of Einstein's quantum mechanics? Or what the editors of NewsWeek were thinking in 1995 when they published an article titled "The Internet? Bah!", which reacted against the idea that this silly digital blip was going to infiltrate and replace elements of our everyday lives? This screen we're all staring at right now is something very new under the sun historically speaking and it has radically altered life as we know it. Why is it guys like Dalio think only entrepreneurs can be innovative and change history--hint, too much Ayn Rand--but governments or ordinary humans can't? Yes, history is cyclical, but it also progresses, for better and for worse. Today, for instance, individual rights are better worldwide than they were 1,000 years ago, but our environment is so much worse. Both of those facts require new ways of thinking, about government and commerce especially.

@Derf,
I was unable to purchase Treasuries in May via Vanguard's website using Firefox.
More info here.
My guess is that Vanguard has optimized their website for Chromium-based browsers.
Firefox uses the Quantum browser engine and is not based on Chromium.

+1 Just the name: Simplify Interest Rate Hedge! Probably should have used a term like strategic, quantitative, analytical, research, quantum. Near a 52 week low for this fund, which probably means nothing, since the fund managers don't know anything either !

You mean like the Quadratic Interest Rate Vltly and Infltn Hdg ETF which was Vltl-as-F recently and not the smooth portfolio 'ballast' that many expected it would be?

+1 Just the name: Simplify Interest Rate Hedge! Probably should have used a term like strategic, quantitative, analytical, research, quantum. Near a 52 week low for this fund, which probably means nothing, since the fund managers don't know anything either !

Notes:
- Ark ETFs are actively managed ETFs.
-The concept of "cash-like equities" is mentioned by Ms Woods.
What are your cash like equity mutual funds?
-Tesla's future aims at Autonomous Taxi Services.
-Bitcoin is the flight to safety currency in Cryptocurrency space. Large gains will be captured by the IRS, not the individual investor.
-Social Media continues to be an important part of modern day financial services.
-Capitalizing on how the world is changing:
- Artificial Intelligence, Robotics, Energy Storage, DNA Sequencing & The Blockchain.
- Quantum Computing

Still think quantum computing is in its infancy. Question is how small can it be incorporated into a CPU? Artificial intelligence used on self-driving cars are still having avoidable accidents. Fast and reliable eye tracking on dSLRs cameras are still being perfected. The only AI that is working is face and iris recognization on cell phones.

Chinese scientists claim to have built a quantum computer that is able to perform certain computations nearly 100 trillion times faster than the world’s most advanced supercomputer, representing the first milestone in the country’s efforts to develop the technology.

Getting Faster

While the current vaccine race has many components over many years to achieve what is now in place; the processing speeds of computer systems to help determine outcomes in many areas provides great benefit now and into the future in our lives.
From an October, 2019 thread.

Separately China and Google have reached this computing milestone.

Nobel Prize-winning physicist Richard Feynman was the first to suggest that the mind-bending properties of quantum mechanics could be harnessed to make a new kind of computer. Almost 40 years later and after a decade of significant progress -- and after a claim by Google that its computer had reached a milestone known as “quantum supremacy” -- it’s still easier to describe the approach’s potential importance than to describe how it works.

why-quantum-computers-will-be-super-awesome-someday-quicktake

You may remember Stan Druckenmiller as a frequent guest on the old PBS Nightly Business Report. This is not intended to represent a broad spectrum of opinion. Nor is his view anything new (unless you’ve been asleep in a cave for the past decade or longer). Since Wikipedia is a free encyclopedia, I’m quoting an amount of bio that under normal circumstances might be inappropriate.
“Druckenmiller began his financial career in 1977 as a management trainee at Pittsburgh National Bank. He became head of the bank's equity research group after one year. In 1981, he founded his own firm, Duquesne Capital Management. In 1985, he became a consultant to Dreyfus, splitting his time between Pittsburgh and New York, where he lived two days each week. He moved to Pittsburgh full-time in 1986, when he was named head of the Dreyfus Fund. As part of his agreement with Dreyfus, he also maintained management of Duquesne. In 1988, he was hired by George Soros to replace Victor Niederhoffer at Quantum Fund. He and Soros famously "broke the Bank of England" when they shorted British pound sterling in 1992, reputedly making more than $1 billion in profits, in an event known as Black Wednesday. They calculated that the Bank of England did not have enough foreign currency reserves with which to buy enough sterling to prop up the currency and that raising interest rates would be politically unsustainable. He left Soros in 2000 after taking large losses in technology stocks ...
According to Bloomberg News, on August 18, 2010, Druckenmiller announced the closing of his hedge fund "telling investors he'd been worn down by the stress of trying to maintain one of the best trading records in the industry while managing an 'enormous amount of capital.'" Duquesne Capital Management posts an average annual return of 30 percent without any money-losing year. His funds were down for about 5 percent when he announced his retirement in August. However, they had since erased the losses and closed with a small gain through successful bets that the market would rally in anticipation that the Federal Reserve would announce further "Quantitative Easing" to assist in reducing unemployment and avoid deflation.
According to The Wall Street Journal, on August 18, 2010, Druckenmiller "told clients that he's returning their money and ending his firm's 30-year run, citing the 'high emotional toll' of not performing up to his own expectations." He indicated it was not easy to make big profits while handling very large sums of money.“
Link to Wikipedia Article

Postscript: It’s clear to me that one of my money managers has absolutely no concept of what a bubble is. Dodge and Cox clearly doesn’t like to party. Their flagship domestic stock fund, DODGX, is down nearly 10% YTD. It’s negative over 1-year and has averaged just a sedate 5.2% annualized return over the past 3. “What mania?” they might be asking about now.
:)

With respect to Quantum Theory, those of you who may be Amazon Prime members have available, as a benefit, access to Amazon's streaming video service.
There are many fine programs available there, including a good many free offerings. Among those, there are quite a few excellent science programs, from Nova and other sources, which explore many aspects of Quantum Theory and Mechanics, Einstein's life work, and other related material.
Also available at no charge are many of the various Ken Burns TV series. It's well worth checking out this resource.

Einstein called quantum theory “spooky science.” He never fully accepted it, even when some of his own calculations seemed to support it. Among other things, quantum physics suggests ...
- The same object can exist in two different places at the same time.
- By affecting one nearby object, you can simultaneously have the same effect / impact on another object hundreds of miles (or millions of light years) away.
- Quantum takes encryption to a new level. Theoretically, it would be impossible to intercept, interfere with or break the codes of quantum communications..
Biggest fear is that China is believed to be far ahead in military / space applications - rumored to have run tests communicating with satellites using quantum.
@gmarceau is correct. Ted’s ever-ready to pour kerosene on a thread he didn’t initiate. :(

My impression with quantum computing is it is not a speed benefit they're really seeking but a complexity problem-solving one. A quantum computer could solve problems current computers with their binary yes/no 0/1 systems can't because life isn't lived or experienced in a binary way.

Sold off one of my money market mutual funds since there has been news, of late, about liquidity concerns in the repo market.

Here’s a Bloomberg story about what some are calling the “repo mess.”
https://www.bloomberg.com/news/articles/2019-09-22/repo-market-s-liquidity-crisis-has-been-a-decade-in-the-making
After I fully comprehend @Catch22’s post re quantum computing *, along with why people are buying negative yielding bonds , I’ll try to get my head around repos. However, it seems to me that if repos came unglued it would throw many other global markets into turmoil - probably equities and, even more likely, funds that employ derivatives / leverage in pursuit of outsized gains. If you’ve been waiting for a sharp reversal in interest rates, this might be the cow that finally kicks the can over (to milk a metaphor to death).
*Here’s a link to Catch’s quantum computing story: https://www.mutualfundobserver.com/discuss/discussion/53776/google-has-given-us-the-first-experimental-evidence-that-quantum-speed-up-is-achievable-real-world

Well, this article knowledge is way past my knowledge base; but tech./science remains a valid investment area, in spite of irregular profit patterns over the years.
Yuh think those NFL replays are pulled up fast now; the processing speed indicated in the link article will eliminate referees.
Personal note: Nature Magazine remains an excellent source for scientific/technology studies. Published articles have passed through a peer review process.
Wish the same peer review could apply to published articles regarding investments; in particular those market crash stories that remain in circulation !!!
Okay, 'outta here. Enjoy.
Catch
From Nature Magazine:
--- Verifying the solution was a further challenge. To do that, the team compared the results with those from simulations of smaller and simpler versions of the circuits, which were done by classical computers — including the Summit supercomputer at Oak Ridge National Laboratory in Tennessee. Extrapolating from these examples, the Google team estimates that simulating the full circuit would take 10,000 years even on a computer with one million processing units (equivalent to around 100,000 desktop computers). Sycamore took just 3 minutes and 20 seconds.