Using a cash account can someone trade all day on it?
No, you cannot.  The cash settlement period will lock up your cash depending on the product you trade. Three business days for stocks, 1 business day for options, and you would need waaaaaay more than $5,000 to trade futures. According to Regulation T, you can make as many day trade (round trip) stock purchases using a cash account as long as you have the funds to cover each and every round trip sale. However, the funds generated from the sales cannot be used again to purchase new stocks until the settlement period (T-2 or T-3) is over. For example, say you have $10000 dollars in your cash account and no securities. You buy 1000 shares of XYZ stock in the morning at one dollar per share and you sell the stock 30 minutes later because it went up say by 50 cents. According to Regulation T, you cannot use the money generated from the sale of your 1000 shares until after the settlement date. However, you can use the remaining $9000 dollars in your account to execute other trades just as the first trade. You can do this as many times as you want as long as you have funds available to pay for the transaction the same day it's executed. The only thing to worry about and that isn't clear, is, what happens if you perform this action more than 3 times in a week? Does it mean that your cash account now becomes a margin account subject to margin account rules because you executed more than three round trip trades in a five day rolling period?
The SEC considers a day trade to be any trade that is opened and closed within the same trading day, and considers a day trader to be any trader that completes 4 or more day trades within 5 business days. If so they would label you day trader and in the US you are required to have at least $25K in your account. Maybe that's why they require you to add more money to your account? See more at Day trading restriction on US stocks and Wikipedia - Pattern day trader. Its hard to write much in those comment boxes, so I'll just make an answer, although its really not a formal answer. Regarding commissions, it costs me $5 per trade, so that's actually $10 per trade ($5 to buy, $5 to sell).  An ETF like TNA ($58 per share currently) fluctuates $1 or $2 per day.  IXC is $40 per share and fluctuates nearly 50 cents per day (a little less).  So to make any decent money per trade would mean a share size of 50 shares TNA which means I need $2900 in cash (TNA is not marginable). If it goes up $1 and I sell, that's $10 for the broker and $40 for me.  I would consider this to be the minimum share size for TNA.  For IXC, 100 shares would cost me $4000 / 2 = $2000 since IXC is marginable.  If IXC goes up 50 cents, that's $10 for the broker and $40 for me.  IXC also pays a decent dividend.  TNA does not.  You'll notice the amount of cash needed to capture these gains is roughly the same. (Actually, to capture daily moves in IXC, you'll need a bit more than $2000 because it doesn't vary quite a full 50 cents each day). At first, I thought you were describing range trading or stock channeling, but those systems require stop losses when the range or channel is broken.  You're now talking about holding forever until you get 1 or 2 points of profit.  Therefore, I wouldn't trade stocks at all.  Stocks could go to zero, ETFs will not.  It seems to me you're looking for a way to generate small, consistent returns and you're not seeking to strike it rich in one trade.  Therefore, buying something that pays a dividend would be a good idea if you plan to hold forever while waiting for your 1 or 2 points. In your system you're also going to have to define when to get back in the trade.  If you buy IXC now at $40 and it goes to $41 and you sell, do you wait for it to come back to $40?  What if it never does?  Are you happy with having only made one trade for $40 profit in your lifetime?  What if it goes up to $45 and then dips to $42, do you buy at $42?  If so, what stops you from eventually buying at the tippy top?  Or even worse, what stops you from feeling even more confident at the top and buying bigger lots?  If it gets to $49, surely it will cover that last buck to $50, right? /sarc What if you bought IXC at $40 and it went down.  Now what?  Do you take up gardening as a hobby while waiting for IXC to come back?  Do you buy more at lower prices and average down?  Do you find other stocks to trade?  If so, how long until you run out of money and you start getting margin calls?  Then you'll be forced to sell at the bottom when you should be buying more. All these systems seem easy, but when you actually get in there and try to use them, you'll find they're not so easy.  Anything that is obvious, won't work anymore.  And even when you find something that is obvious and bet that it stops working, you'll be wrong then too.  The thing is, if you think of it, many others just like you also think of it... therefore it can't work because everyone can't make money in stocks just like everyone at the poker table can't make money.  If you can make 1% or 2% per day on your money, that's actually quite good and not too many people can do that.  Or maybe its better to say, if you can make 2% per trade, and not take a 50% loss per 10 trades, you're doing quite well. If you make $40 per trade profit while working with $2-3k and you do that 50 times per year (50 trades is not a lot in a year), you've doubled your money for the year.  Who does that on a consistent basis?  To expect that kind of performance is just unrealistic.  It much easier to earn $2k with $100k than it is to double $2k in a year.  In stocks, money flows TO those who have it and FROM those who don't. You have to plan for all possibilities, form a system then stick to it, and not take on too much risk or expect big (unrealistic) rewards. Daytrading You make 4 roundtrips in 5 days, that broker labels you a pattern daytrader.  Once you're labeled, its for life at that brokerage.  If you switch to a new broker, the new broker doesn't know your dealings with the old broker, therefore you'll have to establish a new pattern with the new broker in order to be labeled.  If the SEC were to ask, the broker would have to say 'yes' or 'no' concering if you established a pattern of daytrading at that brokerage. Suppose you make the 4 roundtrips and then you make a 5th that triggers the call.  The broker will call you up and say you either need to deposit enough to bring your account to $25k or you need to never make another daytrade at that firm... ever!  That's the only warning you'll ever get.  If you're in violation again, they lock your account to closing positions until you send in funds to bring the balance up to $25k.  All you need to do is have the money hit your account, you can take it right back out again.  Once your account has $25k, you're allowed to trade again.... even if you remove $15k of it that same day.  If you trigger the call again, you have to send the $15k back in, then take it back out. Having the label is not all bad... they give you 4x margin.  So with $25k, you can buy $100k of marginable stock.  I don't know... that could be a bad thing too.  You could get a margin call at the end of the day for owning $100k of stock when you're only allowed to own $50k overnight.  I believe that's a fed call and its a pretty big deal. "First, what structure does your index fund have?  If it is an open-end mutual fund, there are no bid/ask spread as the structure of this security is that it is priced once a day and transactions are done with that price.  If it is an exchange-traded fund, then the question becomes how well are authorized participants taking advantage of the spread to make the fund track the index well?  This is where you have to get into the Creation and Redemption unit construct of the exchange-traded fund where there are ""in-kind"" transactions done to either create new shares of the fund or redeem out shares of the fund.  In either case, you are making some serious assumptions about the structure of the fund that don't make sense given how these are built. Index funds have lower expense ratios and are thus cheaper than other mutual funds that may take on more costs.  If you want suggested reading on this, look at the investing books of John C. Bogle who studied some of this rather extensively, in addition to being one of the first to create an index fund that became known as ""Bogle's Folly,"" where a couple of key ones would be ""Common Sense on Mutual Funds: New Imperatives for the Intelligent Investor"" and ""Bogle on Mutual Funds: New Perspectives for the Intelligent Investor."" In the case of an open-end fund, there has to be a portion of the fund in cash to handle transaction costs of running the fund as there are management fees to come from running the fund in addition to dividends from the stocks that have to be carefully re-invested and other matters that make this quite easy to note.  Vanguard 500 Index Investor portfolio(VFINX) has .38% in cash as an example here where you could look at any open-end mutual fund's portfolio and notice that there may well be some in cash as part of how the fund is managed.  It’s the Execution, Stupid would be one of a few articles that looks at the idea of ""tracking error"" or how well does an index fund actually track the index where it can be noted that in some cases, there can be a little bit of active management in the fund. Just as a minor side note, when I lived in the US I did invest in index funds and found them to be a good investment.  I'd still recommend them though I'd argue that while some want to see these as really simple investments, there can be details that make them quite interesting to my mind. How is its price set then? The price is computed by taking the sum value of all the assets of the fund minus the liabilities and divided by the number of outstanding shares.  The price of the assets would include the closing price on the stock rather than a bid or ask, similar pricing for bonds held by the fund, derivatives and cash equivalents.  Similarly, the liabilities would be costs a fund has to pay that may not have been paid yet such as management fees, brokerage costs, etc. Is it a weighted average of all the underlying stock spreads, or does   it stand on its own and stems from the usual supply & demand laws ? There isn't any spread used in determining the ""Net Asset Value"" for the fund.  The fund prices are determined after the market is closed and so a closing price can be used for stocks. The liabilities could include the costs to run the fund as part of the accounting in the fund, that most items have to come down to either being an asset, something with a positive value, or a liability, something with a negative value. Something to consider also is the size of the fund.  With over $7,000,000,000 in assets, a .01% amount is still $700,000 which is quite a large amount in some ways." All value given to products is subjective and is different from person to person.  It can also vary for the same person from year to year, month to month, day to day, or even hour to hour as a person analyzes different products and prices to determine which imparts the most value to him or her at a given point in time. In regards to losing money in your investment accounts.  This reminds of a book I read on Jesse Livermore.  Jesse was a famous stock broker who made millions (in the 1920's so he would be a billionaire in today's money) in the stock market multiple times.  Jesse felt like  you - he felt like after a while the losses on paper did not seem to concern him as much as he thought it should.  He thought it was due to the investment accounts being simply being numbers on papers and not cold, hard cash. So what did Jesse do to remove the abstract nature of investment accounts?   From here: Livermore always sold out all his positions at the end of every year   and had the cash deposited in his account at the Chase Manhattan Bank.   Then he would arrange with the bank to have the money, in cash, in the   bank’s vault in chests. “There was a desk, a chair, a cot and an easy   chair in the middle of the cash.” On the occasion described in 1923,   there was $50 million in cash.  In the corner was a fridge with food,   enough for a few days. There was lighting installed. Then, like   Scrooge McDuck, Livermore would have himself locked in the vault with   his cash. He would stay a couple of days and “review his year from   every aspect.”  After his stay was over, he would fill his pockets with cash and go on   a shopping spree.   He would also take  a vacation and not re-enter   the market until February. But unlike Scrooge McDuck, this was not the act of a miser, explains   Smitten.  Livermore lived a world of paper transactions all year long.   He believed that “by the end of the year he had lost his perception of   what the paper slips really represented, cash money and ultimately   power.”  He “needed to touch the money and feel the power of cash.” It   made him re-appraise his stock and commodity positions. Imagine the $60,000 from your investment account sitting on your kitchen table.  Imagine seeing $1,000 dumped into the trash can one day.  I know I would appreciate the money much more seeing that happen. "All cash deals basically mean that the acquiring company isn't going to offer you shares in itself, but only the cash equivalent. Mechanically, the acquiring company will find out who the shareholders are, then use electronic means to send money to the shareholders of the target company through their brokerage accounts (slightly oversimplifying here but it's the essence).  As you've pointed out, using physical cash is impractical - they would have to send these amounts of cash to each shareholder of WFM, who will easily number in the tens or hundreds of thousands.  As for AMZN, how it raises this amount of cash is not addressed when we say the deal is ""all cash"". Essentially, it's AMZN's problem to figure out where to get this cash, be it through internal operations, bank borrowings, or issuing new equity." There are two or three issues here. One is, how quickly can you get cash out of your investments? If you had an unexpected expense, if you suddenly needed more cash than you have on hand, how long would it take to get money out of your Scott Trade account or wherever it is? I have a TD Ameritrade account which is pretty similar, and it just takes a couple of days to get money out. I'm hard pressed to think of a time when I literally needed a bunch of cash TODAY with no advance warning. What sudden bills is one likely to have? A medical bill, perhaps. But hey, just a few weeks ago I had to go to the emergency room with a medical problem, and it's not like they demanded cash on the table before they'd help me. I just got the bill, maybe 3 weeks after the event. I've never decided to move and then actually moved 2 days later. These things take SOME planning. Etc. Second, how much risk are you willing to tolerate? If you have your money in the stock market, the market could go down just as you need the cash. That's not even a worst case scenario, extreme scenario. After all, if the economy gets bad, the stock market could go down, and the same fact could result in your employer laying you off. That said, you could reduce this risk by keeping some of your money in a low-risk investment, like some high-quality bonds. Third, you want to have cash to cover the more modest, routine expenses. Like make sure you always have enough cash on hand to pay the rent or mortgage, buy food, and so on. And fourth, you want to keep a cushion against bookkeeping mistakes. I've had twice in my life that I've overdrawn a checking account, not because I was broke, but because I messed up my records and thought I had more money in the account than I really did. It's impossible to give exact numbers without knowing a lot about your income and expenses. But for myself: I keep a cushion of $1,000 to $1,5000 in my checking account, on top of all regular bills that I know I'll have to pay in the next month, to cover modest unexpected expenses and mistakes. I pay most of my bills by credit card for convenience --and pay the balance in full when I get the bill so I don't pay interest -- so I don't need a lot of cushion. I used to keep 2 to 3 months pay in an account invested in bonds and very safe stocks, something that wouldn't lose much value even in bad times. Since my daughter started college I've run this down to less than 1 months pay, and instead of replacing that money I'm instead putting my spare money into more general stocks, which is admittedly riskier. So between the two accounts I have a little over 2 months pay, which I think is low, but as I say, I'm trying to get my kids through college so I've run down my savings some. I think if I had more than 6 months pay in easily-liquidated assets, then unless I expected to need a bunch of cash for something, buying a new house or some such, I'd be transferring that to a retirement account with tax advantages. "In real life, you'd see spreads like AMZN 04/13/2017 910.00 C 4.90 +1.67 Bid: 4.75 Ask: 5.20 (with AMZN @ $897 right now) and the fill you'd get on the buy side would be closer to the ask. i.e. I'd offer $5.00 and hope that it filled.  Filling a $4 bid when ask is $8 isn't likely unless the stock blipped down enough for your price to fill.  Options are a lot like day trading, in most cases. Most members here will agree that day trading isn't investing, it's gambling. Long term, the S&P has been up 10%/yr. But any given day, the noise of the market is a 50/50 zero sum game. Most long term stock 'investors' do well. Those who get in and out, not so much.  There are aspects to options that are appealing. As you've seen, the return can be high, even IRL, but your loss can be 100% as well. Let me share with you a blurred line - I wrote ""Betting on Apple at 9 to 2"" in which I described an option strategy that ran 2 years and would return $10,000 on a $2200 bet. A similar bet that ended a year ago yielded a 100% loss. I don't post there very often, as I keep that trading to a minimum.  There are warnings for those who want to start trading options -" Well said.  To put it shortly I think both can be a viable source of some side income when proper risk management is in place.  It is likely not going to work when you are trading/betting with money that is important to you.  Paper trade/bet until you find a viable strategy.  Then use proper bankroll management and some expendable income to pick up some extra bucks on the side.  Sports betting is nice because the initial investment is much lower than day trading.