why do stock prices move after closing time?

Posted by admin on February 25th, 2010 and filed under stock prices | 4 Comments »

for example.stock markets in us close at 1 pm. yet when i go on yahoo finance and check the real time ecn. a lot of times the stock prices keep on fluctuating. why is that?

Many trades have yet to be accounted at the close so some last price quotes change as they tabulate everything. After hours trading is also done. I can trade after hours from 4:30pm (EST) till 8:00pm. I can trade early the next morning as well. ( I have an account with Scottrade) Trading after hours has less liquidity (less buyers and sellers)

4 Responses

  1. drtried Says:

    Because they don’t stop trading at 4pm. Most do, but many trade "after hours". Do a search.
    References :

  2. jeff410 Says:

    Actually the exchangtes close at 4 pm EST. But there is some after hours trading through Electronic Communication Networks (ECN’s)
    References :

  3. STFU Says:

    Many trades have yet to be accounted at the close so some last price quotes change as they tabulate everything. After hours trading is also done. I can trade after hours from 4:30pm (EST) till 8:00pm. I can trade early the next morning as well. ( I have an account with Scottrade) Trading after hours has less liquidity (less buyers and sellers)
    References :

  4. jerry s Says:

    That’s "After hour" trading.

    Most of the time the volume is low(thin) unless news come out like the Steve Job’s health issue, which increased Apple’s after hour trading volume.
    References :

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