LinkedIn Options Arbitrage

hey guys - wanted to run something by you that I saw earlier today in the markets:

LinkedIn June $85 Puts were at ~$9

The June $85 Calls were at ~ $4.5

The stock price at that time was ~$86.

Is it just me or is this a really good arbitrage opportunity according to put-call parity?

34 Comments
 

i guess the assumptions are European options (no), identical strikes & expiration (yes).

My trade was - sold the put, bought the call - generated immediate cash and had a hedged position. No issues with cash for margin requirements. End of market - the $85 put = $6.20 and the call = $5.20 - so also sitting on a gain on the options.

Cannot help but think that I missed some important risk here? Any opinions?

 

regardless of his trade here isn't there still an arbitrage opportunity?

c-p=s-pv(k)

you can essentially set the pv(k)=85, since with 1 month there is little effect of TVM.

then, you have 4.5-9=86-85

-4.5=1...so shouldnt you synthetically long the lnkd options (buy call sell put) and short the stock?

you can go long at 80.50 with the synthetic long position vs. 86 with the underlying, no?

edit--is the reason this exists because it is very difficult to short lnkd, therefore people are pushing the price of the puts upward and causing the deviation from parity?

 
buybuybuy

If it were really this easy, someone would have already done it.

Next time you see a $100 bill on the street don't pick it up - if it was that easy someone would have already pocketed it

 

@leveRAGE I'd have to assume that's the case (no stock available to short, etc...). You're strategy is correct, assuming you could get the stock to short for the hedge. Unfortunately it sounds like the OP just did the sp-lc leg of the trade and left himself open to the downside. It's highly unlikely he'll get hurt (as long as he closes the position on the open Tuesday), but it sounds like a valuable lesson learned.

 

the borrow costs to short the stock are very high - i heard 90% being talked about on CNBC today .. dont know what it actually us. But what I did seems to be a cheap way of going long linkedin - but with a lot more downside risk since any downward movement of the stock would annihilate me on the "sell put" part of the trade.

In return - I collected a cash amount of $4.50 per contract up front. So I only face massive downside below a certain stock price (but then I have very significant downside risk once that initial cushion is eaten up)

 

What you call "cheap," I call risky. Remember that your trade expires on the third Friday of June. Let's say the LNKD tanks on the next market open and stays in the tank all the way to expiration. Your losses are locked in. If you owned the stock outright you could just wait out the fluctuations in the market for a few months or years until you saw the profit.

 
Best Response
buybuybuyWhat you call "cheap," I call risky. Remember that your trade expires on the third Friday of June. Let's say the LNKD tanks on the next market open and stays in the tank all the way to expiration. Your losses are locked in. If you owned the stock outright you could just wait out the fluctuations in the market for a few months or years until you saw the profit.

That's not even close to accurate. Not even in the same zip code. If the stock tanks you just buy back the puts to cover and you're out of the trade.

Now here's a relatively low cost trade idea: if the stock opens roughly where it closed today, why not just buy back the puts to close your naked position and hang on to the calls plus the premium differential you collected? It's a fair enough assumption that the stock will go higher at some point in the next three weeks, and you can always set a trailing stop on your long calls in case it doesn't. Just a thought.

 

"That's not even close to accurate. Not even in the same zip code. If the stock tanks you just buy back the puts to cover and you're out of the trade."

You're out of the trade, but you still took a loss on the trade. Sure, you can replace the trade by just going long the stock or rolling over to next months contract, but there's still more risk than simply buying the stock. Also less liquidity and higher transaction costs for that matter.

 
buybuybuy"That's not even close to accurate. Not even in the same zip code. If the stock tanks you just buy back the puts to cover and you're out of the trade."

You're out of the trade, but you still took a loss on the trade. Sure, you can replace the trade by just going long the stock or rolling over to next months contract, but there's still more risk than simply buying the stock. Also less liquidity and higher transaction costs for that matter.

It seems you're not familiar with granting options. Nothing to be ashamed of - most investors aren't. Going long the stock or rolling the position forward a month won't offset the trade. By selling the put, you've given the buyer the right to sell you the stock at a higher price if the stock drops. Being long the stock would only add to your negative cost basis.

As for liquidity and transaction costs, options are every bit as liquid as stocks, and the transaction costs are on par with an equity trade. For example, I pay $1 per contract when I trade options, and that's pretty standard.

 

I have been trying to short LNKD for days. Not possible. I thought that this would happen (massive put-call disparity) but it's honestly impossible to short LNKD yet. w/e

Also, it's cheaper for me to trape options than equities at Schwab. idk why.

Reality hits you hard, bro...
 

I think what we have here is a failure to communicate. I'm not saying it will offset the trade. I'm saying that writing short dated puts is riskier because you lock in your loss on the trade at the end of the month (or earlier if you exit the trade). By contrast, someone simply buying the stock can wait out the fluctuations that occur normally over three weeks.

 
buybuybuyI think what we have here is a failure to communicate. I'm not saying it will offset the trade. I'm saying that writing short dated puts is riskier because you lock in your loss on the trade at the end of the month (or earlier if you exit the trade). By contrast, someone simply buying the stock can wait out the fluctuations that occur normally over three weeks.

Okay, that's a given. But buying stock and selling options are two totally different strategies with different investment objectives. I only bring that up because buying the stock outright wouldn't even occur to someone whose investment objective it was to collect the premium from selling an option (especially a put option). Your example is the investing equivalent of driving to a gas station in the hopes of buying an airline ticket.

 

This was a sick thread. Thanks, guys, for something more than, "I blasted my best friend's ex-gf, can I put this on my resume to land BB internship."

I gave you a Silv Bananer EB for some good contributions. Thanks.

 

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