What makes a stock get 40 times avg daily volume without any news?
"Probably the biggest driver of the increased volumes that day was a change in sentiment towards the healthcare sector as a whole that caused many healthcare companies to experience higher volumes ( https://www.bloomberg.com/press-releases/2017-07-11/asset-acquisitions-accelerate-in-healthcare-sector-boosting-potential-revenue-growth ). Following any spike, not just sentiment related spikes, the market tends to bounce back to about where it had been previously as analysts at the investment banks start to see the stock(s) as being overbought or oversold. This is because the effect of a spike on underlying ratios such as the Sharpe ratio or the PE ratio makes the stock look less attractive to buyers and more attractive to sellers, including short sellers. Note, however, that the price is broadly still a little higher than it was before the spike as a result of this change in sentiment. Looking at the price trends on Bloomberg (https://www.bloomberg.com/quote/CDNA:US) the price had been steadily falling for the year prior to the spike but was levelling out at just over $1 in the few months immediately prior to the spike. The increased interest in the sector and the stock likely added to a general change in the direction of the price trend and caused traders (as opposed to investors) to believe that there was a change in the price trend. This will have lead to them trading the stock more heavily intraday exacerbating the spike. Note that there traders will include HFT bots as well as human traders. You question the legality of this volume increase but the simple answer is that we may never know if it was the target of traders manipulating the price or a case of insider trading. What we can see is that (taking ""animal spirits"" into account) without any evidence of illegality there are plenty of potential reasons why the spike may have occurred. Spikes are common where traders perceive a change in a trend as they rush to cash in on the change before other traders can and then sell out quickly when they realise that the price is fundamentally out of sync with the firm's underlying position. You yourself say that you have been watching the stock for some time and, by that fact alone, it is likely that others are for the same reasons that you are. Otherwise you wouldn't be looking at it. Where people are looking at a stock expecting it to take off or drop you expect volatility and volatility means spikes!"
"You are interpreting things wrong.  Indian Infotech and Software Ltd (BOM:509051) clearly has volume and trades.  The MoneyControl site says  Your words like ""Nobody is selling the stock"" and ""no trade going on"" are completely unfounded." You should not look at volume in isolation but look at it together with other indicators and/or the release of news (good or bad). When there is lower than average volume this could be an indication that the stock is in a bit of a holding pattern, possibly waiting for some company or economic news to come out (especially when accompanied by small changes in price). It could also mean that trading in a certain direction is drying up and the trend is about to end (this could be accompanied with a large move in price). When there is higher than average volume (2 to 3 times more or higher), this could be due to the release of company results, company or economic news, or the start or end of a trend (especially if accompanied by a gap). A large increase in volume accompanied by a large fall in price (usually a gap down) may also be an indication the stock has gone ex-dividend. There could be a range of reasons for variations in volume to the average volume. That is why you need to look at other indicators, company reporting and news, and economic news in combination with the volume changes to get a grasp of what is really happening. There is no direct relationship between volume and stock price. High volume indicates how much stock is changing hands. That can be because people are enthusiastically buying OR enthusiastically selling... and their reasons for doing so may not agree with your own sense of the future value of the stock. Higher volume may mean that the price is more likely to change during the day, but it can be in either direction -- or in no direction at all if there isn't a general agreement on how to react to some piece of news. It's a possibly interesting datum, but it means nothing in isolation. I work for a fund management company and we get our news through two different service providers Bloomberg and Thomson One. They don't actually source the news though they just feed news from other providers Professional solutions (costs ranging from $300-1500+ USD/month/user) Bloomberg is available as a windows install or via Bloomberg Anywhere which offers bimometric access via browser. Bloomberg is superb and their customer support is excellent but they aren't cheap. If you're looking for a free amateur solution for stock news I'd take a look at There are dozens of other tools people can use for day trading that usually provide news and real time prices at a cost but I don't have any direct experience with them "When you look at those results you'll see that it lists the actual market cap for the stocks.  The ones on the biggest price move are usually close the the $1B capitalization cut-off that they use. (The don't report anything with less than $1B in capitalization on these lists.)  The ones on the biggest market cap are much larger companies. So, the answer is that a 40% change in price on a company that has $1B capitalization will be a $400M change in market cap.  A 4% change on a company with $100B capitalization will be a $4B change in market cap.  The one that moved 40% will make the ""price"" list but not the market cap list and vice versa." That you're incapable of looking at publically available information on a stock ticker in the business subreddit is kinda on you.   I didn't know anytime I stated a known fact I had to google it for everyone too.  And what did the guy who stated the incorrect info cite?  Get on him.   But here you go!  http://www.nasdaq.com/earnings/report/amzn  http://www.macrotrends.net/stocks/charts/AMZN/revenue/amazon-inc-revenue-net-income-history  https://www.streetinsider.com/ec_earnings.php?q=amzn The company may have put a trading halt due to many reasons, most of the time it is because the company is about to release some news to the market. To stop speculation driving the price up or down, it puts a halt on trading until it can get all the information together and release it to the market. This could be news about an earnings update, a purchase of other businesses, a merger with another business, or a takeover bid, just to name a few. Apparent data-feed issues coming out of NASDAQ in the after hours market. Look at MSFT, AMZN, AAPL, heck even Sears.      Funny thing though, is that you see traces of irregular prices during the active session around 10:20am on stocks like GOOG. First read mhoran's answer, Then this -  If the company sold nothing but refrigerators, and had 40% market share, that's $4M/yr in sales. If they have a 30% profit margin, $1.2M in profit each year. A P/E of 10 would give a stock value totaling $12M, more than the market size. The numbers are related, of course, but one isn't the maximum of the other. "IT appears the company you're talking about did not report as you expected them to, which is not unusual for OTC companies because, as Milo stated, they are not well-managed. That being said, reports on EDGAR are available as soon as they're posted.  I'm not aware of any lag between when the company uploads their report and it is available on the EDGAR site. Looking at the profile of the company you're referring to, I'm curious why you'd be so interested in a company with huge negative earnings, a near-zero share price, and an obviously spotty history of reporting its numbers.  In order to make any money with this stock, you'd have to buy a huge number of shares, which could be difficult to unload.  Further, the fees you're going to pay to make your trades are very likely to outstrip your return, so you'd be upside down on it. This company has pretty negative financials, and in a world of cheap oil, alternative energy (and the companies that deal in it) are out of vogue, so they're not likely to see a turnaround anytime soon.  They're spending money on R & D at a rate almost 17 times earnings, and the losses are deepening, while revenues are not improving all that much.  These guys are bleeding to death, and there's little prospect of a financial transfusion on the horizon. This is, as they say, a ""dog with fleas"", so your best bet is to find something else to put your money into. I hope this helps. Good luck!" "I think that ""memoryless"" in this context of a given stock's performance is not a term of art. IMO, it's an anecdotal concept or cliche used to make a point about holding a stock. Sometimes people get stuck... they buy a stock or fund at 50, it goes down to 30, then hold onto it so they can ""get back to even"". By holding the loser stock for emotional reasons, the person potentially misses out on gains elsewhere." according to me it's the news about a particular stock which makes people to buy or sell it mostly thus creates a fluctuation in price . It also dependents on the major stock holder. You should not trade based on what news is just released, if you try you will be too slow to react most of the time. In many cases the news is already priced into the stock during the anticipation of the news being released. Other times as soon as the news is released the price will gap up or down in response to the news.  Some times when you think that the news is good, like new record profits have been achieved, but the share price goes down instead of up. This may be due to the expectation of the record profits by analysts to be 20% more than last year, but the company only achieves 10% more than last year. So the news is actually seen as bad because, even though record profits, it hasn't met expectations. The same can happen in the other direction, a company may make a loss and the share price goes up. This may be because it was expected to make a 50% loss but only made a 20% loss due to cost cutting, so this is seen as a good thing and the price can shoot up, especially if it had been beaten down for months. An other example is when the Federal Reserve in the USA put up interest rates earlier this month. Some may have seen this as bad news and expected share prices to fall, but instead prices rallied. This was actually seen as good news, firstly because it had been expected for a long time, and secondly and more importantly because a small rise in interest rates after many years of near zero rates is a sign of the economy finally starting to improve. If the economy is improving, that means more people will have jobs, more people will be spending more money, companies will start to make higher revenues and start to expand, which means higher profits and higher share prices. A better way to trade is to have a written trading plan and use technical analysis to develop a set of buy and sell criteria that you follow to the tea. Then back test your trading plan through various market conditions to make sure you get a positive expectancy. Various companies have hired quants to write algorithms to buy and sell stocks. Each of these has unique criteria that determine when it should buy/sell. Most have some AI component that allows it to tweak parameters and learn. The point is the more people try this kind of fake news tactic the better the algorithms get at responding or not responding to it. Keep in mind though that 1) the AIs learn at different rates 2) if an AI notices a boost in trading volume due to a story it determines is fake, the correct move is to buy and then sell before other AIs catch on. "You can have as many IRA accounts as you want (whether Roth or Traditional), so you can have a Roth IRA with American Funds and another Roth IRA with Vanguard if you like. One disadvantage of  having too many IRA accounts with small balances in each is that most custodians  (including Vanguard) charge an annual fee for maintaining IRA accounts with small balances but waive the fee if the balance is large. So it is best to keep your Roth IRA in just one or two funds with just one or two custodians until such time as investment returns plus additional contributions made over the years makes the balances large enough to diversify further. Remember also that you cannot contribute the maximum to each IRA; the sum total of all your IRA contributions (doesn't matter whether to Roth or to Traditional IRAs) for any year must satisfy the limit for that year. You can move money from one IRA of yours to another IRA (of the same type) of yours without any tax issues to worry about. Such movements (called rollovers or transfers) are  not contributions and do not count towards the annual contribution limit. The easiest way to do move money from one IRA account to another IRA account is by a trustee-to-trustee transfer where the money goes directly from one custodian (American Funds in this case) to the other custodian (Vanguard in this case). The easiest way of accomplishing this is to call Vanguard or go online on their website, tell them that you are wanting to  establish a Roth IRA with them, and that you want to fund it by transferring money held in a Roth IRA with American Funds. Give Vanguard the account  number of your existing American Funds IRA, tell them how much  you want to transfer over -- $1000 or $20,000 or the entire balance as the case may be -- and tell Vanguard to go get the money.  In a few days' time, the money will appear in your new Vanguard Roth IRA and the American Funds Roth IRA will have a smaller balance, possibly a zero balance, or might even be closed if you told Vanguard to collect the entire balance.  DO NOT approach American Funds and tell them that you want to transfer money to a new Roth IRA with Vanguard: they will bitch and moan and drag their heels about doing so because  they are unhappy to lose your business, and will probably screw up the transfer. Talk to Vanguard only. They are eager to get their hands on your IRA money and will gladly take care of the whole thing for you at no charge to you. DO NOT cash in any stock shares, or mutual fund shares, or whatever is in your Roth IRA in preparation for ""cashing out of the old account"". There is a method where you take a ""rollover distribution"" from your American Funds Roth IRA and then deposit the money into your new Vanguard Roth IRA within 60 days, but I recommend most strongly against using this because too many people manage to screw it up. It is 60 days, not two months; the clock starts from the day American Funds cuts your check, not when you get the check, and it is stopped when the money gets deposited into your new account, not the day you mailed the check to Vanguard or the day that Vanguard received it,  and so on. In short, DO NOT try this at home:  stick to a trustee-to-trustee transfer and avoid the hassles."