Quote from 1a2b3cppp:
...what are the chances of that happening?
Bank of America Merrill Lynch on Friday sustained a loss approaching $10 million because of an error handling a controversial type of stock-option trading, according to people with knowledge of the issue.
The error was seen tied to "dividend trades" that have stirred controversy in the options industry in recent years, according to traders.
The strategy involves placing trades the day before a company's or exchange-traded fund issuer's shares go "ex-dividend."
...
Critics of the strategy charge that it takes advantage of investors that haven't exercised their call options before the ex-dividend date, and don't have the resources to transact big options plays.
A notice from stock-options analysis firm Trade Alert LLC on Friday linked the error to options contracts on the SPDR exchange-traded fund, which tabulated recipients of its dividend Friday.
Quote from loufah:
Anyone know more details about this?
http://online.wsj.com/article/SB10000872396390444620104578011112447236182.html
Actually, it's a bona fide strategy utilized by large prop groups. There are a few variations, but the idea overall is to be short of whole bunch of deep ITM calls on the night prior to ex-div date and holding full delta against them in one or another form. On large ETFs, a fair number of people forgets/forgoes early-X, e.g. on SPYs it's about 8-10% of total position that do not get early X-ed.Quote from donnap:
Not likely. The MM probably gets a few, though.
Quote from sle:
Actually, it's a bona fide strategy utilized by large prop groups. There are a few variations, but the idea overall is to be short of whole bunch of deep ITM calls on the night prior to ex-div date and holding full delta against them in one or another form. On large ETFs, a fair number of people forgets/forgoes early-X, e.g. on SPYs it's about 8-10% of total position that do not get early X-ed.
I think the f*ck-up at BoAML was on the back of a variation where you buy and sell the same calls in two different accounts, early X the long position and hope for a high enough idiot factor on the short position. In this case, I would not be surprised if it was a pure operational SNAFU.
Of course I am contradicting you. Probability of OP getting some un-X calls is about 1:10, like everyone else. If you are a long a 100k, chances are 8-10k are not gonna get X-ed, if you do it every expiration. There is no real difference if you sell a large block or bleed them out 1 lot at a time. You just have to be short enough contracts. The main limitation in this trade is the balance sheet cost, which is why most people involved in these trades are bank prop desks.Quote from donnap:
I never said that it wasn't a bona fide strategy. "Not likely" refers to the probability that OP might get some. You act as though, somehow, you are contradicting what I wrote.
Quote from sle:
Of course I am contradicting you. Probability of OP getting some un-X calls is about 1:10, like everyone else. If you are a long a 100k, chances are 8-10k are not gonna get X-ed, if you do it every expiration. There is no real difference if you sell a large block or bleed them out 1 lot at a time. You just have to be short enough contracts. The main limitation in this trade is the balance sheet cost, which is why most people involved in these trades are bank prop desks.
PS. Explain to me the whole attitude thing here - aren't we here to learn from each other? If I am contradicting someone or arguing, it's because it kinda helps to know what's true and what is not, what works and what does not.