Cathie Wood

Wood is a pure-conviction thematic investor. She identifies technologies she believes will fundamentally change the world — genomics, AI, robotics, blockchain, autonomous vehicles — and concentrates heavily in the companies building those technologies, often before those companies are profitable.

Her time horizon is explicitly five years. She does not care about quarterly earnings.

She cares about whether the technological trajectory is intact.

The approach is genuinely different from most of Wall Street. She is not doing DCF models on current cash flows.

She is forecasting where industries will be in a decade. When she is right about the technology and right about the timing, the returns are extraordinary.

When she is right about the technology but wrong about the timing — or wrong about which companies will win — the losses are severe. 2020 showed the first scenario.

2021–2022 showed the second.

Michael Burry

Burry is a pure fundamental analyst. He reads the actual documents.

Not the analyst summary. Not the ratings agency report.

The actual prospectus, the loan files, the footnotes. For the Big Short trade, he read thousands of individual mortgage loan documents.

Nobody else was doing that. Analysts were looking at aggregate statistics.

The aggregate statistics looked fine. The individual loans were a disaster.

His basic method: find something everyone is ignoring, do the work to understand why it''s mispriced, take a position, and wait. The waiting is the hard part.

He was short the housing market for two years before it collapsed. During those two years his investors were losing money on paper and threatening legal action.

He locked redemptions to prevent forced liquidation. He was right and it cost him two years of misery to prove it.

Cathie Wood

Wood's philosophy is that the market systematically undervalues disruptive innovation because traditional analysts use short time horizons and conventional valuation methods that don't apply to exponential-growth businesses. She believes five-year time horizons are necessary to capture the full value of technological change.

She also believes concentration is a feature, not a bug: if you're right about a technology platform, owning 20% of your portfolio in it is more rational than owning 1%. She has said repeatedly that she would rather be early and wrong for a period than miss the technology entirely.

Michael Burry

Read the documents. That is basically the whole philosophy.

Not the summary. Not the analyst report.

The actual documents. Most investors don''t do this because it''s tedious and slow and it requires a tolerance for complexity that most people don''t want to develop.

His second rule: be willing to be lonely. His housing short was a deeply contrarian position that most finance professionals thought was ridiculous.

He didn''t need their validation. He needed the math to work.

His third: factor in time when sizing a position. The housing market stayed wrong for two years.

Size your position so you can survive being right too early.

Cathie Wood

Wood runs concentrated, leveraged-conviction portfolios with almost no hedging. Her funds can hold 30–50 positions but the top 10 often represent 60–70% of assets.

She does not short. She does not hold cash as a defensive measure.

When the market declines, her funds decline more, because she owns high-beta, high-growth, often unprofitable companies that get hit hardest in risk-off environments. She is explicit about this: if you cannot stomach 50% drawdowns, ARK is not for you.

Many investors found this out the hard way in 2022.

Michael Burry

He concentrates heavily. When he has a thesis, he puts a large portion of the fund into it.

He also used leverage on the housing trade — borrowing to buy credit default swaps amplified both the wait and the eventual payoff. His risk tolerance is high in the sense that he can hold a losing position for years if the fundamental analysis is intact.

It is low in the sense that he won''t touch anything he doesn''t deeply understand. He doesn''t trade momentum or narratives.

If the math doesn''t work, he''s not interested.

Cathie Wood

Wood is a devout Christian and has spoken publicly about faith informing her long-term orientation — she genuinely believes she is investing in technologies that will improve human lives, not just make money. She is a major donor to her church and to Christian educational causes.

She lives relatively modestly for someone running a multi-billion-dollar firm. She does not appear in tabloids.

She is not known for lavish spending. What she is known for is being relentlessly, publicly bullish — even when her funds are down 75%.

Michael Burry

He lives in Saratoga, California. He is notoriously private — he has opened and deleted social media accounts multiple times after his market commentary attracted more attention than he wanted.

He occasionally posts about market risks and then goes quiet for months. He has a son with Asperger''s syndrome, and the experience led him to recognise similar traits in himself and pursue his own autism diagnosis as an adult.

He doesn''t do conferences. He doesn''t do interviews.

He files his quarterly 13F and lets the positions speak.

Cathie Wood

Tesla is the defining win. Wood started buying Tesla in 2018 when the stock was around $18 adjusted for splits and the financial press was writing endless stories about whether the company would survive.

She published a price target of $4,000 (split-adjusted $800) that was mocked widely. Tesla's stock went to $400 at its peak — a gain of roughly 2,000% from her early purchases.

ARKK returned 150% in 2020 alone, driven heavily by Tesla. The fund went from $1.9 billion in assets to $17 billion in one year.

The Tesla call is one of the most accurate and most profitable individual stock calls in modern ETF history.

Michael Burry

The housing trade. In 2005, Burry read thousands of subprime mortgage loan documents and concluded the US housing market was built on loans that would eventually default in large numbers.

He persuaded Goldman Sachs and Deutsche Bank to sell him credit default swaps on mortgage-backed securities — essentially insurance that paid out when the mortgages defaulted. The banks thought he was wrong.

They were happy to take his premiums. In 2007–2008 the mortgages defaulted.

His investors made $700 million. Burry personally made about $100 million.

The banks that sold him the swaps needed government bailouts to survive.

Cathie Wood

The 2021–2022 collapse is the biggest mistake — or more accurately, the biggest risk that came due. After ARKK's extraordinary 2020, Wood did not meaningfully de-risk or trim winners.

She continued buying high-growth, unprofitable tech companies into 2021 as they became more expensive. When interest rates rose in 2022, those companies — which depend on cheap money to fund future growth — were hit extremely hard.

ARKK fell approximately 75% from its February 2021 peak. Investors who bought near the top lost three quarters of their money.

Wood maintained conviction and bought more on the way down. Whether that turns out to be smart or stubborn will depend on what happens to these technologies over the next five years.

Michael Burry

The trade nearly destroyed him before it paid off. He locked investor redemptions to prevent forced liquidation of his position — probably the right call, but it created a legal and emotional nightmare that he''s described as one of the worst periods of his life.

He also closed Scion to outside investors after winning, which in hindsight was leaving behind an institutional money management career after one of the greatest trades in history. He''s never explained that decision fully.

It may have been the right one. It may not have been.

Cathie Wood

Cathie Wood grew up in Los Angeles, the daughter of Irish immigrants. She studied economics and finance at the University of Southern California under Arthur Laffer — yes, the Laffer Curve guy — who she credits as a formative influence on her thinking.

She started her career at Capital Group in 1977 as an assistant economist, then moved to Jennison Associates where she spent 18 years managing equity portfolios.

In 2001 she joined AllianceBernstein as chief investment officer for global thematic strategies. There she developed the early framework for what would become ARK: thematic investing around transformative technologies.

She pitched the idea internally. They passed.

In 2014, at age 58, she left and started ARK Invest from scratch with $6 million of seed money. That is either inspiring or terrifying depending on how old you are and how risk-tolerant you are.

Michael Burry

Michael Burry was born in San Jose, California in 1971. He lost his left eye to retinoblastoma as a child and has worn a prosthetic eye since.

He studied economics at UCLA and then went to Vanderbilt University School of Medicine. During his medical residency at Stanford, he posted detailed stock analysis on investor message boards between midnight and 3 AM.

The quality was consistently good enough that people in finance started paying attention.

He left his residency in 2000 — one year from finishing — to start Scion Capital with $1.1 million in loans from his family. No finance credentials.

Just a public track record and conviction. In his first full year, the S&P 500 fell 11.9%.

Scion returned 55%. From 2001 to 2008, Scion returned over 489% against the S&P 500's 3%.

Then he made the trade.

Cathie Wood

ARK Invest is the company she founded in 2014 and the vehicle through which all her major positions have been run. ARK operates several actively managed ETFs, the most famous being ARKK (ARK Innovation ETF), which holds concentrated positions in companies she believes are driving technological disruption.

At its peak in February 2021, ARKK had over $27 billion in assets under management. By 2022 that had fallen below $7 billion as the fund declined roughly 75% from its high.

Her major individual positions have included Tesla (she was buying when it was under $20 adjusted; it went to $400), Coinbase, Roku, Zoom, Teladoc, and Palantir. She publishes all her trades publicly every day — unusual for an active manager — and shares her full investment theses openly.

She also hosts a weekly podcast, runs a public research blog, and appears on television regularly.

Michael Burry

Scion Capital ran from 2000 to 2008. He closed it to outside investors after the Big Short trade — partly because managing money for clients who were screaming at him to reverse a position he knew was right was a genuinely miserable experience, and partly because he didn't need to anymore.

He relaunched as Scion Asset Management, a personal vehicle he still runs today. His current investing is more conventional — value picks, occasional activist positions, portfolio bets that get attention when his 13F filings come out.

He bought GameStop before Reddit did. He shorted Tesla.

He has positioned in water rights and farmland. He tends to be early, which is both his gift and his problem.

Cathie Wood

University of Southern California, BS in Economics and Finance, 1981. She studied under Arthur Laffer, the economist behind supply-side economics, who she credits with shaping her long-term, structural view of markets.

She has said the Laffer Curve and its implications about incentives and growth informed how she thinks about technology and innovation.

Michael Burry

BA in Economics, UCLA. MD, Vanderbilt University School of Medicine, 1999.

He completed three years of his medical residency at Stanford before leaving to start Scion Capital. He is technically a licensed physician who never practiced.