What happened seems to have come through, but this just a thought that I haven't yet verified with past data. It seems to me that when is too much money riding on the fact that the market will go DOWN, it does the exact opposite.
The three options with the highest open interest on Wednesday were: the 4300 put, the 4400 put and the 4500 put. Together these accounted for an interest of around 99 lakh Nifty shares, an amount equivalent to 4300 cr.
My feeling was, when the put options have so much interest, they will make a lot of money when the stock price is below their strike price. In general, markets will move against where most people go - therefore, the price that looked most obvious from the data was 4400. The 4500 put traded much higher than Rs. 100 giving it a real value only when the Nifty was below 4400.
The upmove on Monday solidified that thought, since Friday was a bleak day for the US markets and we were supposed to follow suit. When Tuesday followed high, I took a position on the Nifty on Wednesday, writing a 4300 put, in my belief that the Nifty would end above 4300. A put-writer - or a seller of a put - is obligated to BUY at a certain price. My 4300 put-write gave me the obligation to buy the Nifty at 4300 on Thursday, one days later. Note that at this point, the Nifty was trading above 4300, so the premium I got was about Rs. 20. For one lot of 50 Nifty, I got about Rs. 1,000.
The margin I paid was Rs. 20,000 or so.
Now on Thursday the market rocketed upwards. It ended at 4412, nearly a 100 points up from where I had written it. Since selling me the Nifty at 4300 was useless, the option would be unexercised, giving me the Rs. 1,000 profit. What did I invest? Rs. 20,000 - the margin I put for writing the put.
Options are very risky; in fact, had I done this on Tuesday I would have been in some temporary trouble. Nifty ended up on Tuesday at 4300, and the put quoted at Rs. 20 then. The next day the market opened low, and the option was at Rs. 70 - a Rs. 50 loss. That means a loss of Rs. 2,500 per lot - a 13% loss in just one day! Yet the Nifty recovered and made the position a profitable one.
Most people who trade in options tend to buy them, but a lot of money can be made writing options, especially close to expiry. To me, it looked like the market would move against those that had bought options (because they have a limited risk - the option writers have unlimited risk), especially against the 4300 put because the open interest on that option was going UP when it should be declining (typically, option open interest in the last few days before expiry, declines)
So would I go and write all the top open-interest options the day before expiry? No. There needs to be a clear trend - increasing interest in a certain type of option and the direction of the top traded options. And I need to statistically analyse if such a strategy would have worked in the past - otherwise this is just co-incidence.
Note that commissions can put you out of business too. My commissions and taxes on my option was only Rs. 60, because I used Reliance Money. Had I used my account at Sharekhan I would have paid at least Rs. 250, a considerably lower profit.
If you have ABSOLUTELY no idea what this article was about, you probably want to read my Introduction to futures and options article.

News and views (28 Aug 2007)
Categories: Commentary
The US markets are down on bad housing data. With house sales reducing every month (y-o-y) for the last five months, things look ominously bad. How does it affect us? Well, no home sales means defaults in loans. Loans are given by banks, packaged as mortgage based securities, and in turn sold to hedge funds. Hedge funds have fingers in every pie, including India. They may sell their profitable positions like India to make up for the housing losses.
This situation isn't improving anytime soon, even if the Fed cuts rates. There is simply too much silly lending that has happened to let it not affect us.
Dollar moves
The dollar's up to 41. Time to buy exporters? Not quite. In the face of the falling dollar, hedges were shored up to one quarters revenues in July, and as you might realise, the quarter still has a month to go. We'll have to see if the rupee slide is for real or temporary, but the going up indicates that FIIs are moving out (or at least, aren't coming in with gusto). But would you buy Infy and IGate? Not unless you read:
IGate and Infy hurt by subprime
So Infy and IGate fell prey to the subprime situation by losing a customer - Greenpoint. Not a very big deal for Infy, but could be for IGate. The P/Es of these companies are still 25 or so - fully valued for the near term if the dollar stays at this level.
The dollar upmove has another implication:
Forex gains of ECB holders to reverse
Tata Steel, Bharti Airtel, Reliance Communications etc. showed large forex gains (500 cr. types) in their Q1 results. With a fall in the rupee, the gains will reverse to a certain extent - and perhaps make their results less attractive in comparison. Airtel, without its forex gains, would have made just a 33% gain in profit over last year - high, but not as much as the 100% it did show. Again, for a company with a P/E of 40, even 33% growth isn't all that much.
There are other factors that may affect the market very soon: At the end of this month, hedge fund data will show us what kind of redemption pressure is around in the US. While all of this may sound bad, here's a few positive notes:
On a bullish front, US S&P 500 Puts are being bought by the dozen - a move that is bound to cause the market to rise because when a lot of people bet on the market falling, it usually rises.
In India, judging from just the sentiment on the TV channels, there seems to be an extremely high rate of caution. When people are cautious, the market rarely falls very much - as has been proved in the last month. Perhaps it's time to figure out what to buy; some candidates are in the small and mid cap spaces which have been battered much more than the top guys.
Posted in Commentary