Fund Manager Ab Nicholas Has Been Beating S&P 500 for 40 Years
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So, survivor bias - this guy happens to be the current unicorn. To give a tech comparison, imagine it's 1980 and you're trying to pick who would be on top of the heap of the tech industry in 2015. There's not much more than a dartboard chance.
I wonder what the real ROI is compared to a simple S&P 500 tracking index fund with all additional fees taken into account for both cases.
The classification of anyone that beats the market as a lucky unicorn is logically impermeable. If you accept the argument, then no matter who says they're beating the market, you'll be able to dismiss them without further thought.
There needs to be a better argument, one that allows for the hypothetical fund that does manage to do something intelligent and beat the market.
I find that this style of logically impermeable arguments crop up quite often when dealing with peoples belief structures. Here yours is that the stock market cannot be beaten, which may or may not be true. A useful question to ask in these situations is; Suppose that your belief is wrong, what evidence do you imagine might prove that it is in fact wrong?
When you can answer that question, you'll have a more concrete argument for why this fund is indeed just a lucky survivor.
Note, being a unicorn isn't necessarily a sinker for an argument, it just can't be your only defence (i.e. gravity is the unicorn of theories about why things fall :) )
I just want to point out that it's possible to pick out winners better than random quess if they have advantage over others.
Case in point: Warren Buffet. He is good investor who has beaten the S&P 500 decade after decade. But he is not beating the market because he makes series of good decisions. He beats the market because he has structured his business so that he has several advantages that others don't. The heart of his empire is his insurance companies. They create steady stream of cash even in the bad times when company valuations are low. Buffet don't have to loan money when he finds good investment or sell his other assets when he finds good investment. This already gives him severals percentage points advantage over others and that advantage compounds over decades. Also, he is in the position where he don't have to play martingale strategy [1] to please investors, because he and his friends own so many shares in the company (he is not in the payroll, he is in the charge).
[1] The real cause of the financial crisis - An MIT Blackjack Team perspective by Semyon Dukach http://semyondukach.blogspot.com/2009/01/real-cause-of-finan...
Imagine Deep Blue beats Kasparov 40 games in a row. "Oh, this computer is getting lucky, it doesn't really have a strategy. This is the unicorn computer that is beating our best player."
If the manager picked a single stock 40 years ago and that outperformed the market, that would be a unicorn. If the manager actively managed the fund for 40 years, buying and selling several times a year based on market conditions, and beat the market (the "best we have"), I'd say the strategy was sound.
You can always cop out and claim talent is luck (Steve Jobs was "lucky" at picking products, etc.).
So, yes it's possible that this guy is doing something clever or has some advantage that means he will continue to beat the market. It's also possible it's just that he got lucky, and the other 9,999 people who pursued strategies and didn't get lucky are forgotten about.
If (somehow) beating the market was a 50-50 chance (which is like saying a randomly written chess algorithm has a 50-50 chance of beating Kasparov), the chance of 40 years of gains is 1/2^40, which is less than 1 in a trillion.
I'd say that's sufficient evidence to reject the null hypothesis, that the drug is no better than placebo. Just because we don't understand the mechanism doesn't make it chance.
So, he very well could be the lucky monkey.
Beating the market (no matter the margin) is purported to be a 50-50 chance, and doing so 40 times in a row would happen by chance less than 1 in a trillion times.
(That is, if you accept the premise that stock market investing has no skill component.)
Roughly speaking, if it's possible to beat the market, then when comparing between the result distribution we have of actual result, against a hypothetical distribution where investor was using coin toss to invest, those two have to be different. The conclusion comes from people saying that those two looks the same.
Now, actually make the test and choosing all the variable in question is NOT a simple task, and definitely is a hard problem.
[1] http://www8.gsb.columbia.edu/rtfiles/cbs/hermes/Buffett1984....
Having said that I'd say it is possible to formulate a strategy that will (on average) beat an index and be better than chance.
All that is needed is diligent research and a long term view.
With an index you are forced to invest in the good, bad and ugly. When you choose you can do better.
Anyhow, half the point of a hedge fund isn't even to beat the market, but to hedge against market downturns. The ones beating the market are prop traders and the like...
another problem is, what is the proper benchmark? say he beat S&P 500. Ok, but we know that small stocks or value stocks outperform S&P 500. Did he beat a small stocks index? My guess is once you construct a proper benchmark, it becomes even less likely that he really did beat it.
In the real world insider trading is everywhere, and people pay big bucks to get data faster and trade faster than everyone else.
The main reason most people lose money on the stock market is because it is a zero sum game baring inflation, not because of EMH.
I know you can create "value" when currency changes hands, but we're talking about beating the average returns. And for someone to do better than the market, someone else will obviously do worse.
> And for someone to do better than the market, someone else will obviously do worse.
While it's true someone will do worse (especially when 'trading'), that 'worse' could just be a lower profit. After all, the stock markets do generally go up over time. Inflation helps, and of course economic growth too.
One post isn't enough to explain the entire monetary system, however investing isn't a 'zero-sum' game...
Now, the naive assumption of 50% odds of beating the market is a little dangerous, since there are plenty of investments that are highly likely to beat the market but suffer occasional catastrophic losses -- i.e. without being particularly clever one can trade probabilities for magnitudes.
So at the end of the day, there's no substitute for understanding how a fund manager actually thinks and operates. It is possible to beat the market, and to do it consistently and for reasons other than luck. And it's possible, with diligence, to pick a fund manager to do it for you. But merely looking at the history of returns is not diligence, it's laziness, unless the fund has a truly astounding statistical record, which very, very few funds do, even the good ones.
One consequence of this is that the probability of outperforming each day over 40 days is the same as outperforming each year over 40 years. The latter sounds more impressive, but it actually isn't. The former would be impressive too if the null hypothesis really is a series of coin flips (but again, it's not).
Sounds impressive, but from http://en.wikipedia.org/wiki/Berkshire_Hathaway : "Berkshire Hathaway averaged an annual growth in book value of 19.7% to its shareholders for the last 49 years (compared to 9.8% from the S&P 500 with dividends included for the same period)"
*the 41st root of 200... n such than exp(n,41) == 200...
...
> The Nicholas Fund, which he has run since 1969, has topped the Standard & Poor’s 500 Index by an average of 2 percentage points a year for the past 40 years and has beaten it every year since 2008.
Was 2008 already 40 years ago, or is the title using "consistently" in a figurative sense?
"The Nicholas Fund, which he has run since 1969, has topped the Standard & Poor’s 500 Index by an average of 2 percentage points a year for the past 40 years and has beaten it every year since 2008."
Does this not mean that it has not, in fact, "been beating S&P 500 for 40 years"? Very misleading title if this is the case.
And a lot of the comments I'm reading here seem to have indeed been mislead into thinking that it has beaten S&P consecutively for 40 years.
That said, index funds' popularity is part performance, part cost. Were costs factored into these performance metric? If not, I wonder how much of the 2% gains would have been passed on to the individual investor, if any at all.
(Nothing against this guy - probably a combination of skill and luck, which I doubt he'd deny.)
I often hear the outliers make claims like "the models predict that we shouldn't exist -- if the analysts are right, there shouldn't be any outliers as good as we are." The implicit argument is that the people claiming "on average, stock pickers don't beat the index" don't know what tehy're talking about. But it's widely acknowledged that the tails are exactly where modeling of this kind tend to fail, so I'm not convinced. A model that gets the tails wrong might still be much better at figuring out expected value, which is what investors should actually care about. How do I make sure that they're not just trying to sell a product with sub-par expected return by chopping off yesterday's heavy tail and waving it around?
In order to properly correct for survivor bias, you'd have to count the # of funds that were created in the past 40 years, and then figure out (assuming a normal distribution of performance), what you expect the best fund performance to be. He has to beat that number to be considered genuinely better (rather than being the luckiest).
For example suppose that the volatility of the S&P 500 is 10% per year. In a 40 year period, the volatility is thus 0.10 times sqrt(40), the central limit theorem, or 63%. So, a 1 standard deviation move in the S&P 500 over 40 years is 63%.
To outperform by 2% per year, is 1.02^40 = 2.28 = 128% gain.
63% * 2 = 126%
So, this guy performed two standard deviations above the mean over 40 years. That certainly is within the realm of random chance, considering he was the best/luckiest.
Therefore, I conclude he did not outperform the market by a statistically significant margin. Actually, I'd expect the best fund to be 3 or 4 standard deviations above the mean (given the # of funds), so this result is an argument AGAINST active managers.
Actually, the volatility of the S&P 500 is more than 10%, so I overestimated his performance. It's closer to 15% long-term, but it's varied a lot over 40 years.
If someone assumes that performance is normally distributed (e.g. by dividing by standard deviation and using the gaussian CDF to reject null hypotheses), couldn't you arbitrage against them by creating a bunch of "heavy tail" funds, waiting for a few of them to beat the market in a more extreme fashion than the normal distribution would predict is possible, and then using the normal distribution to "prove" that it couldn't have happened by chance?
1. You can't normally short sell mutual funds. As a retail investor, short selling is hard. Plus, short selling has fees, even for institutional investors.
2. Even if a fund gets lucky (or unlucky), its future returns are also normally distributed. I.e, if a fund beats the market 20% one year, its next year is just as likely to be lucky again as unlucky.
Funds that underperform the market severely are closed or merged into other funds.
Funds that get lucky and trounce the market tend to stay open. If your 5 year track record is +20%/year, and you have a "bad" year, your 6 year track record is still +15%/year.
Contrast that with Vanguards S&P 500 fund (http://www.vanguard.com/pub/Pdf/p040.pdf) at 0.17% for Investor Shares and 0.05% for Admiral Shares
It's odd how very few on HN doubt the ability of HFTs to make money, but when it comes to active management the assumption is that no one can really add value.
People like btian below feel they have a moral obligation to protect the innocent from the charlatans, and hey at least that's noble, even if it is misplaced.
I don't think the way I trade is right for most people. Primarily because it takes time and many people don't care to invest time in managing their money. Also because it takes a lump sum of capital that many people do not have. But the idea of making very high probability trades using leverage is not even provocative, it's boring and the antithesis of "get rich quick". It's about grinding it out, carefully balancing your delta risk to guard against "black swan" events, managing trade timeline to reduce gamma risk. Anybody can get an education in this stuff, it's not black magic.
I avoid talking about this stuff on HN because the downvotes come in swarms, which is something i SMH at -- ideas getting censored here of all places -- but I don't like the "nobody can make any money trading" folks to have the airwaves solely to themselves.
While I do not do finance for a living, I have scratched the surface and recognize that there are infinite interesting problems out there in finance waiting to be solved.
I currently do research based stock trading and momentum based e-mini futures to give you an idea of my level of knowledge and risk tolerance. I've done okay with both, but I would like to continue to improve.
For example, I'd love to see: the percent of fund managers who quote Warren Buffett that outperform over five- and 10-year periods; the percent of fund managers who are significant investors in their own funds that outperform the indices over five- and 10-year periods; and so on.
Just to make sure for the people who are claiming he's a unicorn/the top end outlier of a normal distribution...do you claim the same about Buffett? Or is it different because Nicholas basically charges for the stock picking and with Buffett you invest in "his" company?