June 24, 2010

Efficient Market Theory

Warren Buffet’s thoughts on Efficient Market Theory
From his 2006 letter to Berkshire Hathway Shareholders


In 2006, promises and fees hit new highs. A flood of money went from institutional investors to the 2-and-20 crowd. For those innocent of this arrangement, let me explain: It’s a lopsided system whereby 2% of your principal is paid each year to the manager even if he accomplishes nothing – or, for that matter, loses you a bundle – and, additionally, 20% of your profit is paid to him if he succeeds, even if his success is due simply to a rising tide. For example, a manager who achieves a gross return of 10% in a year will keep 3.6 percentage points – two points off the top plus 20% of the residual 8 points – leaving only 6.4 percentage points for his investors. On a $3 billion fund, this 6.4% net “performance” will deliver the manager a cool $108 million. He will receive this bonanza even though an index fund might have returned 15% to investors in the same period and charged them only a token fee.

The inexorable math of this grotesque arrangement is certain to make the Gotrocks family poorer over time than it would have been had it never heard of these “hyper-helpers” Even so, the 2-and-20 action spreads.

Its effects bring to mind the old adage:
When someone with experience proposes a deal to someone with money, too often the fellow with money ends up with the experience, and the fellow with experience ends up with the money.

Let me end this section by telling you about one of the good guys of Wall Street, my long-time friend Walter Schloss, who last year turned 90. From 1956 to 2002, Walter managed a remarkably successful investment partnership, from which he took not a dime unless his investors made money. My admiration for Walter, it should be noted, is not based on hindsight. A full fifty years ago, Walter was my sole recommendation to a St. Louis family who wanted an honest and able investment manager. Walter did not go to business school, or for that matter, college. His office contained one file cabinet in 1956; the number mushroomed to four by 2002. Walter worked without a secretary, clerk or bookkeeper, his only associate being his son, Edwin, a graduate of the North Carolina School of the Arts.

Walter and Edwin never came within a mile of inside information. Indeed, they used “outside” information only sparingly, generally selecting securities by certain simple statistical methods Walter learned while working for Ben Graham. When Walter and Edwin were asked in 1989 by Outstanding Investors Digest, “How would you summarize your approach?

Edwin replied, “We try to buy stocks cheap” So much for Modern Portfolio Theory, technical analysis, macroeconomic thoughts and complex algorithms.

Following a strategy that involved no real risk – defined as permanent loss of capital – Walter produced results over his 47 partnership years that dramatically surpassed those of the S&P 500. It’s particularly noteworthy that he built this record by investing in about 1,000 securities, mostly of a lackluster type. A few big winners did not account for his success. It’s safe to say that had millions of investment managers made trades by a) drawing stock names from a hat; b) purchasing these stocks in comparable amounts when Walter made a purchase; and then c) selling when Walter sold his pick, the luckiest of them would not have come close to equaling his record. There is simply no possibility that what Walter achieved over 47 years was due to chance.

I first publicly discussed Walter’s remarkable record in 1984. At that time “efficient market theory” (EMT) was the centerpiece of investment instruction at most major business schools. This theory, as then most commonly taught, held that the price of any stock at any moment is not demonstrably mispriced, which means that no investor can be expected to overperform the stock market averages using only publicly-available information (though some will do so by luck). When I talked about Walter 23 years ago, his record forcefully contradicted this dogma.

And what did members of the academic community do when they were exposed to this new and important evidence? Unfortunately, they reacted in all-too-human fashion: Rather than opening their minds, they closed their eyes. To my knowledge no business school teaching EMT made any attempt to study Walter’s performance and what it meant for the school’s cherished theory.

Instead, the faculties of the schools went merrily on their way presenting EMT as having the certainty of scripture. Typically, a finance instructor who had the nerve to question EMT had about as much chance of major promotion as Galileo had of being named Pope.


Tens of thousands of students were therefore sent out into life believing that on every day the price of every stock was “right” (or, more accurately, not demonstrably wrong) and that attempts to evaluate businesses – that is, stocks – were useless. Walter meanwhile went on overperforming, his job made easier by the misguided instructions that had been given to those young minds. After all, if you are in the shipping business, it’s helpful to have all of your potential competitors be taught that the earth is flat.

Maybe it was a good thing for his investors that Walter didn’t go to college.

June 5, 2010

My Favorite Business

So what's your favorite business…
People often ask me this question and my answer is always the same...

The businesses that I like the most are the ones that are most profitable :) 
More specifically...

I like businesses with predictable profits in which profits grow linearly (or exponentially) with the growth in business (i.e.: Same or higher ROI/ROE on incremental/expanded business)... "Economies of Scale"

Whereas, I like to avoid businesses that either fetch lower ROI/ROE on incremental/expanded business... "Diseconomies of Scale" or those that require massive amounts of debt/capital investment to scale out/expand... without a clear visibility of profits...

Three kinds of businesses that I like:

Selling products at high margins
(This is achievable and sustainable through one or more of: high brand value/mindshare, (beyond compare / distinguishing) product quality/service/experience, secret formula/patents and sticky products)
  1. Apple: sells hardware at amazing margins
  2. Coke: sells soft drinks at amazing margins (Further, having globalized well, it can potentially sell "1 billion" bottles a day while maintaining high margins) (imagine!) 
Products with very low variable cost
It may have taken Microsoft $7 billion to develop Windows 7.
A copy of windows retails anywhere between $49 and $399.

However do you know how much does an incremental sale of Windows 7 cost microsoft?
Yes, they burn the software on empty DVD's worth after $1 or $2

The profit margins increase with every additional unit sale.

Most product based software companies come in this category.
Some more example would be production houses(movies), writing books and enjoying royalties etc

Off course, such a business may make loses until it recovers the fixed cost (threshold unit sales), beyond which everything is but neat Profit.

Platforms and Services
(Businesses that don't require huge capital for "scaling out")
e.g.: Security brokerage, Services, Consultancy

Developing platforms for buyers and sellers to meet and trade is a wonderful business. (and so is providing platforms for people to develop and host)

The variations range from all Stock Exchanges, Brokerage houses, Ebay to the modern world Windows Azure, Facebook, .Net/Visual Studio and what not...

Just like the government, you get to collect brokerage/share on all transactions, whether or not the individual makes a profit. "More trades/transactions/volumes --> more brokerage and earnings"

Another good thing about these businesses is disposable earning. The profits need not be reinvested to sustain or grow the business and hence can be distributed as dividends or used in other businesses.

Looking at it, even Telecom, Broadband and DTH services come under the category but these specifically require huge sums of Capitals.

(Do NOT confuse this with physical retail which not only requires capital investments but also requires managing huge inventory)

Additionally, I like a special category of businesses that I like to call "Naturally Growing businesses"

These businesses are like my long term investment portfolio. Profits in these businesses in some sense are directly proportional to the book value (while the differentiation also comes through effective management etc) These grow incrementally/consistently year after year in their book value yielding some dividends and reinvesting the remainder of profits. Any equity dilutions at a price above book value is usually favorable for existing shareholders.

Barring few exceptions, most well managed banking and finance companies would come in this category.

June 4, 2010

Economies of Scale...

May 1995

Every once in a while, in those hot summer afternoons, a marketing fellow from either HLL or P&G would ring the door bell and announce schemes like: "For every women/girl in your house, we will give you a complimentary sachet of our new product. e.g.: Sunsilk shampoo"

I would soon start jotting down feminine names and not stop writing until either my mind ran out of names or the marketing guy ran out of stock :) [With dozens of sachets in my hand, I often felt like the smartest child on this planet :)]

Among other funny conversations, I specifically remember one incident when the marketing guy asked me if the house was actually a girls hostel :)

Wow, this was even better than negotiating and selling old newspapers and scrap to make for a little extra pocket money
(To be frank though, the money either got spent buying gifts for my sister or was saved in my Piggy Bank)
I was very young, just about 11 years old, and I had figured out my way to the riches…

If I could collect Rs. 1/- each (beg, borrow, steal) from every Indian, I would have collected a billion rupees (~USD 22 million) and become a rich man.

Well, as I grew up I realized that there was actually nothing wrong about my plan, just that I could do this in a more intellectual way than actually reaching out to people directly asking for money.


On 15th March 2010, Reliance Communications announced that it has hit the "100 million customer" mark (i.e. 10 crore customers) and targets to have "200 million customers" (i.e. 20 crore customers) in next 1000 days (FY 2013)

Ignoring the current or previous numbers, capital investments, expenses, debt etc for now…

Let us try to understand what it means to have 100 million or 200 million customers (in less than 3 years)...

On the operational side, it means being able to manage as many customers (in terms of network scale out, managing customer records, outlets for recharge/bill payments, billing, logistics, customers support) among other things.

On the business/earnings side, it means having 200 million customers using the services and hence putting money is company's pocket either through monthly bills or recharges.

There are several approaches to maximizing/increasing revenue from customers from collecting fixed monthly charges to various value added services to text advertisements etc

After accounting for all forms of expenses from managing networks and call centers, employee cost, interest cost, depreciation etc, If the company just manages to make a net profit of Rs. 1/- per customer per day (come on, this ain't too much to ask for)

Well, seeing the ever increasing number of junk/bulk messages on my mobile, I for one believe that the company could earn Rs. 1/- a day per customer from text advertisements alone.

200 million customer * Rs. 1/- per day… translates into a net of Rs. 6 billion a month or Rs. 72 billion a year… i.e.: $1.6 billion in annual profits

I am sure the management, strategists, business planners or promoters at the company, even on bad days would target for more profits per user than a mere Rs. 1/- per day

If they can manage to extract Rs. 2/- per day from customers, it would translate into $3.2 billion in annual profits
(aha, I am loving it…)

Big numbers multiplied by numbers as small as 1, still yield big numbers… that's the beauty of a high volume business...
On the other hand, the same big number game can have catastrophic results, when big numbers are multiplied with negative numbers, however small.

Economies of Scale...