Where I can find the exact time when a certain company's stock will be available in the secondary market?
Twitter is planning to go public on NYSE. You'll be able to start trading once the stock is listed for trading, which would be the day of the IPO.  Note that since you're trading on the secondary market, you won't be able to buy at the IPO prices, whatever the time is. You're buying from someone who bought at IPO price. "Very often, the word secondary market is used synonymously with the stock market as we all know it.  In this case, the primary market would be the ""closed"" world of VCs, business angels, etc to which stock market investors do not have access, e.g. the securities are not trading on a public stock market."
Investopedia has one and so does marketwatch    I've always used marketwatch, and I have a few current competitions going on if you want me to send the link    They recently remodeled the website so it works on mobile and not as well on desktop    Don't know anything about the investopedia one though "http://finance.yahoo.com/stock-alerts/stock-watch/add/?.done=/stock-alerts/ You will have to have a yahoo account. If you want to provide an alternative delivery email address, visit the URL above. Click ""Stocks Watch"", enter ticker(s) and price(s) at which you want alerts, then at the bottom select the ""email"" radio button. If your preferred email address is not listed, click the ""Add an email address"" link and follow the instructions. I don't know what their limit is, but I currently have three addresses set up -- two to non-@yahoo addresses -- and it works fine." No matter how a company releases relevant information about their business, SOMEBODY will be the first to see it. I mean, of all the people looking, someone has to be the first. I presume that professional stock brokers have their eyes on these things closely and know exactly who publishes where and when to expect new information. In real life, many brokers are going to be seeing this information within seconds of each other. I suppose if one sees it half a second before everybody else, knows what he's looking for and has already decided what he's going to do based on this information, he might get a buy or sell order in before anybody else. Odds are that if you're not a professional broker, you don't know when to expect new information to be posted, and you probably have a job or a family or like to eat and sleep now and then, so you can't be watching somebody's web site constantly, so you'll be lagging hours or days behind the full-time professionals. They could have different quotes as there are more than a few pieces here.  Are you talking a Real Time Level II quote or just a delayed quote?  Delayed quotes could vary as different companies would be using different time points in their data.  You aren't specifying exactly what kind of quote from which system are you using here. The key to this question is how much of a pinpoint answer do you want and how prepared are you to pay for that kind of access to the automated trades happening?  Remember that there could well be more than a few trades happening each millisecond and thus latency is something to be very careful here, regardless of the exchange as long as we are talking about first-world stock exchanges where there are various automated systems being used for trading. Different market makers is just a possible piece of the equation here.  One could have the same market maker but if the timings are different,e.g. if one quote is at 2:30:30 and the other is at 2:30:29 there could be a difference given all the trades processed within that second, thus the question is how well can you get that split second total view of bids and asks for a stock.  You want to get all the outstanding orders which could be a non-trivial task. The first moment of trading usually occurs even later than that. It may take a few hours to balance the current buy/sell orders and open the stock. Watch CNBC when a hot IPO is about to open and you'll see the process in real time. If you miss it, look at a one day Yahoo chart to see when the open occurred. Yes, http://shares.telegraph.co.uk/stockscreener/ has what you're looking for. "Try the general stock exchange web page. http://www.aex.nl I did a quick trial myself and was able to download historical data for the AEX index for the last few years.  To get to the data, I went to the menu point ""Koersen"" on the main page and chose ""Indices"". I then entered into the sub page for the AEX index. There is a price chart window in which you have to choose the tab ""view data"". Now you can choose the date range you need and then download in a table format such as excel or csv. This should be easy to import into any software.  This is the direct link to the sub page: http://www.aex.nl/nl/products/indices/NL0000000107-XAMS/quotes" Try Google Finance Screener ; you will be able to filter for NASDAQ and NYSE exchanges. "Google Finance certainly has data for Tokyo Stock Exchange (called TYO on Google) listings.  You could create a ""portfolio"" consisting of the stocks you care about and then visit it once per day (or write a script to do so)." http://www.euroinvestor.com/exchanges/nasdaq/macromedia-inc/41408/history will work as DumbCoder states, but didn't contain LEHMQ (Lehman Brother's holding company). You can use Yahoo for companies that have declared bankruptcy, such as Lehman Brothers: http://finance.yahoo.com/q/hp?s=LEHMQ&a=08&b=01&c=2008&d=08&e=30&f=2008&g=d but you have to know the symbol of the holding company. Depends on how you measure liquidity.  There's papers out there that approach this very question. Measured in order book spreads for a consolidated $100m trade, I'd say the second biggest market is FX swaps, followed or par'd by the money market (government bonds). If you disallow OTC venues, it's most definitely exchange listed government bonds. If, however, you happen to think in terms of sheer volume per time, the most liquid market phase could be considered the NYSE closing auction, as you can move billions in a matter of minutes, or expressed in speed terms: several m$/s (million dollars per second). You should pick a definition and we can provide you with a more accurate list of candidates and actual data. There are lots of good answers on here already.  There are actually lots of answers for this question.  Lots.  I have years of experience on the exchange feed side and there are hundreds and thousands of variables.   All of these variables are funneled into systems owned by large financial institutions (I used to manage these - and only a few companies in the world do this so not hard to guess who I work for).  Their computers then make trades based on all of these variables and equations.  There are variables as whacky as how many times was a company mentioned in an aggregate news feed down to your basic company financials.  But if there is a way to measure a company (or to just guess) there is an equation for it plugged into a super computer at a big bank. Now there are two important factors on why you see this mad dash in the morning: Now most of the rest of the day is also automated trades but by the time you are an hour into market open the computers for the most part have fulfilled their calendar buys.  Everyone else's answer is right too.  There is futures contracts that change, global exchange info changes, options expiring, basic news, whatever but all of these are amplified by the calendar day changing. I will be messaging you on [**2017-10-06 17:57:23 UTC**](http://www.wolframalpha.com/input/?i=2017-10-06 17:57:23 UTC To Local Time) to remind you of [**this link.**](https://www.reddit.com/r/finance/comments/7354iz/roku_ipo_stock_price_closes_up_67_on_first_day_of/dnolw5y)  [**3 OTHERS CLICKED THIS LINK**](http://np.reddit.com/message/compose/?to=RemindMeBot&amp;subject=Reminder&amp;message=[https://www.reddit.com/r/finance/comments/7354iz/roku_ipo_stock_price_closes_up_67_on_first_day_of/dnolw5y]%0A%0ARemindMe!  1 week) to send a PM to also be reminded and to reduce spam.  ^(Parent commenter can ) [^(delete this message to hide from others.)](http://np.reddit.com/message/compose/?to=RemindMeBot&amp;subject=Delete Comment&amp;message=Delete! dnolwn7)  _____  |[^(FAQs)](http://np.reddit.com/r/RemindMeBot/comments/24duzp/remindmebot_info/)|[^(Custom)](http://np.reddit.com/message/compose/?to=RemindMeBot&amp;subject=Reminder&amp;message=[LINK INSIDE SQUARE BRACKETS else default to FAQs]%0A%0ANOTE: Don't forget to add the time options after the command.%0A%0ARemindMe!)|[^(Your Reminders)](http://np.reddit.com/message/compose/?to=RemindMeBot&amp;subject=List Of Reminders&amp;message=MyReminders!)|[^(Feedback)](http://np.reddit.com/message/compose/?to=RemindMeBotWrangler&amp;subject=Feedback)|[^(Code)](https://github.com/SIlver--/remindmebot-reddit)|[^(Browser Extensions)](https://np.reddit.com/r/RemindMeBot/comments/4kldad/remindmebot_extensions/) |-|-|-|-|-|-| "A company whose stock is available for sale to the public is called a publicly-held or publicly-traded company.  A public company's stock is sold on a stock exchange, and anyone with money can buy shares through a stock broker. This contrasts with a privately-held company, in which the shares are not traded on a stock exchange. In order to invest in a private company, you would need to talk directly to the current owners of the company. Finding out if a company is public or private is fairly easy.  One way to check this is to look at the Wikipedia page for the company.  For example, if you take a look at the Apple page, on the right sidebar you'll see ""Type: Public"", followed by the stock exchange ticker symbol ""AAPL"".  Compare this to the page for Mars, Inc.; on that page, you'll see ""Type: Private"", and no stock ticker symbol listed. Another way to tell: If you can find a quote for a share price on a financial site (such as Google Finance or Yahoo Finance), you can buy the stock.  You won't find a stock price for Mars, Inc. anywhere, because the stock is not publicly traded." I don't know that I can answer the question fully, but 2 points. The percent that represent capital gains certainly can't exceed 100. Did you mean 50% but the 500% is a typo?  More important, funds held in retirement accounts have no issue with this, Cap Gains are meaningless within tax deferred accounts. I don't know the ratio of stocks held in these accounts vs outside, just that the 2011 year end total retirement account worth was $17 trillion. (That's 12 zeros) This strikes me as a high ratio, although more numbers digging is in order.