How can my stock's price change after-hours? Can I sell the stock at the after-hours price?

Once expired, the options do not affect stock prices any more. A wild card option allows treasury bond, or treasury note, futures How is options trading done? Now, stock price CAN be momentarily affected by an option when the option is exercised. The company missed earnings due to a stock-based compensation tax hit and increased cost of revenue. On these days you'll tend to see a suppression of realized volatility because option sellers want to keep the price of the underlying within a specific range, so the stock generally moves around less than usual. How does stock prices affect interest rate?

How Options Expiration Affects Stock Prices "Pinning" refers to the price of an underlying stock trading closer to an actively-traded option strike price than it would absent the options.

What are the Major Differences in Extended Hours Trading?

So, what happens to the price of a stock when someone buys a huge quantity of its out of the money call options? Nothing happens because an out of the money call option grants the buyer the right to buy the underlying stock at a HIGHER price, which is something almost nobody will exercise on. On top of that, the out of the money call options may remain out of the money all the way to expiration and simply "Expire out of the money" like it never existed in the first place.

So, why should the price of the underlying stock be affected by something that could jolly well never have existed at all, see? Now, stock price CAN be momentarily affected by an option when the option is exercised. If by expiration those out of the money call options becomes in the money and is exercised, the price of the stock would momentarily sink to the strike price of the call options and then almost instantly get back up to market price as market makers and market participants continue to bid and ask at market prices.

In fact, this momentary sinking only happens when a HUGE amount of call options at the same strike price are exercised. This effect is hardly noticable if only small numbers of options contracts are exercised. In other words, the price you will receive is the price that someone in the after-hours or pre-market is willing to pay. Pre- and after-hours markets will generally have less liquidity , more volatility , and lower volume than the regular market.

This can have a huge effect on the price you end up getting for your shares, so it is usually important to use a limit order on any shares that you buy or sell outside normal trading hours.

Generally speaking, price changes in the after-hours market have the same effect on a stock as changes in the regular market do: However, once the regular market opens for the next day's trading when most individual investors will have the opportunity to sell , the stock may not necessarily open at the same price at which it traded in the after-hours market.

For example, if a stock's price increases greatly in the after-hours market due to a rumor of increased sales, there could be a lot of investors who want to sell immediately at the market open , increasing selling pressure and possibly driving the price of the stock down from the previous day's after-hours level.

The price changes seen in the after-hours market are useful for showing how the market reacts to new information released after the regular market has closed. However, after-hours price changes are more volatile than regular hours prices, so they shouldn't be relied on as an accurate reflection of what a stock will trade at when the next regular session opens. In the past, the average investor could only trade shares during regular market hours—after-hours trading was reserved for institutional investors.

The day when stock investors will be able to trade 24 hours a day, seven days a week may not be too far off, fingers crossed. How can my stock's price change after-hours? Kyle and Ian both have good examples. On a more immediate time scale, even the prospect of options trades will move the price of stocks. Say a broker needs to buy calls on behalf of a customer, he goes to a market maker with the order. The market maker knows she will have competition in getting her stock hedging order in once all the market makers are trying to hedge their new trade.

It is common to "front run" the hedge, in this case buying the stock before the market maker actually sells the calls to the broker. People will usually only do this if they are fairly sure that the options side of the trade will happen. Related Questions How do Forex prices influence stock prices? How difficult is stock trading? Is trading stock options a zero-sum game? How interest rates affect options trading? Can we short a trading options stock? Is option trading an option?

How does the price of crude oil affect the stock market? What should I trade stock trading in a binary option? What is option trading and commodity options? Is trading stocks addictive? Is options trading real trading or gambling? Why are stock prices moving while trading is halted? What is better, trading in stock or trading in options? How does stock prices affect interest rate?

Market Direction And Pricing

One exception to this: There is a tendency for stock prices to gravitate to the closest strike near expiration, known as "pinning to the strike.". But even this is only a temporary effect caused by trading with options strikes in mind. Once expired, the options do not affect stock prices any more. Does strong buying of options affect the price of the underlying stock in any way? This is an extremely interesting question indeed. Now, when you buy an option, you are really only entering into a contract for the POTENTIAL trading of the underlying asset itself. Does Options trading drive the price movement of the underlying or vice versa? Update Cancel. Options trading can and does affect the price movement of the underlying. The causality works both ways, not just uni-directionally from the underlying to the options. This is referred to as pin risk to the seller of the option, with the stock.