. strives to keep its information accurate and up to date. The information in our reviews could be different from what you find when visiting a financial institution, service provider or a specific products website. All products are presented without warranty.

Theres a lot of talk these days aboutindex investingand passive money management. Many investment firms are streamlining operations toreduce their expensesand appeal to investors looking simply for low costs over the long term.

But index funds are far from perfect as even the creators of the vehicles admit and in this era of low interest rates and disappointing global growth, theres an undeniable appeal to tactical investing or day trading stocks.

If youve been trading stocks, options, and ETFs for a while, youll notice an explosion in high-tech tools and competition forever-lower costs. Its never been easier to actively play the market, provided you choose the right trading platform, of course.

Buy-and-hold retirees and rookie investors have much different needs than seasoned day traders looking for agility and sophistication.

For many day traders, sitting in front of their trading platform is their full-time job. (Yes, it is lots of fun for traders who love the high stakes and adrenaline rush, but that doesnt mean this is a hobby.) The best trading platform for day traders needs to be a useful tool and not just a cheap or flashy connection to the markets.

When looking for a good platform, you can skip past the stuff like educational tools or asset allocation calculators. For day traders, its not about tax efficiency or diversification, its about making money right now.

And while fees matter, cost isnt the only factor. If you were a carpenter, for instance, youd buy the best tool for the job, not simply the cheapest. Same goes for day traders.

Must-haves for the best day trading platform include:

This is a huge priority, both in research and order execution.

There are a lot of promotional offers out there that last just a month or two for example, TD Ameritrade offers free trades for the first 60 days, and E*Trade offers commission-free trades for the first 500 trades with a $10,000 deposit. But both then push that up to a standard rate of $6.95 per stock transaction. The initial savings of promos like these more than offset on the back end.

The tool should go beyond U.S. stocks to include options and futures.

A good platform should work alongside the other tools and services youre using.

There are three excellent platforms that do all these things in spades.

And above those must-have factors, each has its own unique value for traders, depending on their tendencies. Another alternative, if you have a large enough account, is to use Merrill Edge. You can also get a sweetheart deal if you do enough other business with Merrill and its parent company, Bank of America. (I really geek out on Merrill Lynchs in-house research.) Keep this in mind, because nothing in investing is one size fits all, and your specific situation may open other doors for you.

Thats because there are a heck of a lot more 401(k) and IRA investors out there than day traders, and thats who the big guys cater to. Consider Fidelity, which offers a host of its own mutual funds as ETFs to investors with zero transactions costs a great way to save if youre just building a diversified buy-and-hold portfolio. Unfortunately, if you want to be active and have flexibility outside the Fidelity universe, itll cost you.

We ran the numbers for a dozen brokerage platforms, from legacy names like Charles Schwab to low-cost upstarts like Robinhood to traditionaldiscount online brokers. We ignored the super-premium VIP perks, but did presume a minimum account balance of at least $10,000. We also presumed activity of 100 to 200 trades a month thats five to 10 each trading day. Dont overestimate and presume youll get volume discounts; but honestly if youre not trading actively every single day then you shouldnt be using the term day trader to describe yourself.

Then we dug into the value each platform provided beyond the simple ability to trade. After cutting the most expensive half of the group based on the trading cost alone, we downloaded platform trials, read fine print about tools and data, and even trolled trading websites to find out what traders are saying about these platforms.

Lightspeed offers one of the most sophisticated and personalized platforms out there. You can literally make precise and tactical trades with the push of a button. The Lightspeed Trader platform is all about speed and customization, displaying collapsible and movable windows instead of a fixed experience.

Hot Keys:This feature is pretty mind blowing: On Lightspeeds higher-end software (including Lightspeed Trader) you can automate specific trading strategies that normally involve manual entry by mapping your keyboard. You can even map multiple orders for the same stock so one key buys 1,000 new shares of Tesla while another sells 100 shares you already own. This is a must-have for serious day traders.

Volume Discounts:Rates at Lightspeed are determined by trading volume and incurred monthly. If youre very active with your account, the savings add up in a hurry. The base rate is $0.0045 per share; if you trade 10 times a day in lots of about 150 shares each transaction, thats just $135 per month compared with the fees of about $1,400 youd rack up at a typical broker that charges a flat rate of $7 per trade. But, it gets better. Lets say, instead, you trade 100 times a day. Based on that monthly volume, Lightspeeds base rate falls to $0.0035 a share, meaning a total tab of $1,050 compared to $1,350 at the higher Lightspeed rate or a whopping $14,000 with a traditional per-trade model.

Free Demos:You can experience a trial version of Lightspeeds various trading platforms simply by providing an email address and following the instructions you receive. Many premium tools dont allow that kind of no-obligation access. Some sites only provide screenshots of how their tools work. Charles Schwab does a bit better with videos of the tools at work in its e-mail-required Guest Pass. However, to actually get your hands dirty with Charles Schwab, they want a Social Security number and other personal finance info. This is not the case with Lightspeed.

Platform Fees:Lightspeeds customization is awesome, but it comes at a price and with a structure you may not be used to. Most noteworthy is the maintenance fee for access to its higher-level trading platforms for the outstanding features like after-hours trading and order customization. If youre an active trader, then the software pays for itself. But its worth pointing out the platforms run $1,200$3,300 annually. Because of this, you need to know your tendencies and try out a demo before committing.

Stocks and ETFs: $0.0045 per share, with a $4.50 minimum*

Options: $0.60 per contract (for fewer than 500/month)

$100 monthly maintenance fee for the Lightspeed Trader software (reviewed here; with hot-key order entries and features discussed)

* Fewer than 250,000 stock/ETF shares; higher volume results in cheaper rates.

If you like charts and screening stocks, youll love TradeStation and not just because its platform comes out of the box with best-in-class charting and backtesting, but because it has its own app store full of tools and plugins made by third-party developers and investors. The current offerings include everything from free earnings calendars to a premium tool for dissecting order flow ($69/month).

Better Bulk Orders: One particularly valuable feature comes standard in the latest TradeStation platform:TSAlgos app. It allows for automatic execution of large orders via algorithm, to break them up into smaller and more efficient chunks. No more moving the market inadvertently on low-volume stocks, and no need to parcel things out yourself.

Multi-Screen Support: TradeStation almost expects you to have multiple monitors with additional workstations open. With such great depth of tools and so many of them with visual elements like charts and stock screens, this feature is quite useful.

Mobile Integration: Most serious day traders have too much going on for a small screen, but TradeStation has created an agile app for both Apple and Android devices that integrates well with the desktop experience. This can grant some peace of mind if youre worried about monitoring your account on the go.

Variable Fees: As with Lightspeed, TradeStation has variable trading fees, but unlike Lightspeeds monthly batching, TradeStation brackets fees per order. Its confusing and overly complicated. Lets say you buy 1,500 shares of a given stock. The per-share rate on Tradestation is $0.01 for the first 500 shares then $0.006 for orders above that. Your transaction costs you $11 and the math looks like this: (500 shares x $0.01 = $5) + (1000 shares x $0.006 = $6) = $11.

Stocks and ETFs: $5 per trade or as low as $0.006 per share (200+ trades / month)

Options: $5 per trade + $0.50 per contract, or a $1.00 flat rate (200+ trades / month)

Futures: $1.50 per contract (300 or fewer futures contracts)

Best Low-Cost Day Trading Platform: Interactive Brokers

Interactive Brokers is one of the largest electronic brokerages in the U.S., executing almost 600,000 trades a day. That scale allows for competitive pricing other platforms simply cant match. If youre after low fees, theres really no reason to shop around.

Fund/ETF Replicator:Ever wanted to invest in a sector fund but disliked a handful of the components? IB has you covered with agreat toolthat replicates holdings of your favorite mutual fund or ETF so you can customize it yourself. This is a great time-saver and idea generator.

Third-Party Data:Many top-notch data sourceshave relationships with Interactive Brokers. If you already pay for a subscription to Bloomberg or S&P Capital IQ, you can easily sync-up your account for a seamless portfolio experience. And if you prefer free services, many major names from Morningstar news and StockTwits social signals can be integrated at no cost.

One-Click Mosaic Display:TheTrader Workstationsoftware youll get to manage your IB account is designed for agility, where one click on a ticker in your portfolio will update all your fields in a mosaic view, including refreshing charts and newsfeeds as well as auto-filling some order entry. While the workstation doesnt integrate as well with third-party research as Tradestation and isnt as customizable as Lightspeed, its still a robust platform thats easy to use, agile, and responsive.

Not Just for Day Traders: Interactive Brokers regularly ranks at the top of lists like this one for the best brokerage platforms for day traders. But thanks to its ultra-low cost structure, it also wins high marks among platforms for professional money managers with fiduciary responsibilities, as well as for sleepy buy-and-hold investors.

As a result, the Interactive Broker platform is full of tools and features you may not use. For instance, itsRisk Navigator toolcan display portfolio metrics to measure your risk across industries or positions a potentially powerful feature for armchair investors looking to avoid costly mistakes. However, for day traders where higher risk trades are par for the course and being overweight in a single position or sector is desirable, its not much of a value-add and clutters up the experience.

Stocks and ETFs*: $0.005 per share with $1 minimum and a maximum of 0.5% of trade value

Options: $0.70 per contract, with a minimum order of $1.00 **

*Certain commission-free ETFs can be bought at zero cost to you

**Based on a premium of greater than 0.1 and 10,000 contracts or less each month.

You can also use these platforms for the most aggressive strategies such as forex, short selling, or trading on margin, as long as youre comfortable trading on margin with borrowed funds. Remember, its not only risky, but can be very costly with the added fees.

Lets say you pony up $10,000 to buy 100 shares of a stock at $100 and watch it drop to $50. Sadly, youve lost $5,000. But it would be even worse if you were so convinced it was a great investment that you put in $10,000 of your own cash and another $10,000 borrowed from your broker. Now youre facing a $10,000 shortfall the entirety of the real money you invested plus an 8% interest rate on your loan, or another $800 in fees.

And if you dont have it? Well, your broker may just sell some of your other assets to cover the shortfall. And that could result in even more collateral damage, since the sale isnt based on your investment strategy at all, but on your negative account balance.

Even if youre right, youll still get charged that $800 fee, so you better be sure youre making at least $801 in profit, or the only one getting richer here is your broker.

There are a lot of other arcane fees and rules relating to microcap or OTC trading, too. This is not to say you cant make money with these strategies. But there are plenty of people who have been burned by all these approaches, both through bad trades as well as good trades that look good on paper but rack up steep, profit-eating fees. If you rely heavily on one of these approaches, closely read the fine print at these and other brokers to protect yourself.

All three platforms will satisfy just about any day traders demand for speed, reasonable fees, access, and flexibility.Lightspeedis the most customizable, TradeStation has an impressive array of plugins, andInteractive Brokershas unbeatably low costs.

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