Best Brokers For Fractional Share Investing Compared & Reviewed

Yes, Interactive Brokers is simply unmatched in terms of market access, account types and execution options for retail traders. It always has been and remains one of the cheapest trading and investing platforms globally.

The proof they say is in the pidding and IBKR, has increased it’s market share in the UK dramatically over the past few years. In 2024 alone, they increased the number of accounts by 142%. An amount I suspect will continue to rise, of all the brokers we cover, they provide the most updates, most platforms and are always looking to offer new markets, that investors actually want.

2025 Awards: Best Professional/DMA Broker 2025

Pricing: Top marks as IBKR don’t charge a custody (account) fee and commission are the cheapest around

Market Access: Top marks again for the widest selection of markets available

App & Platform: Hard to beat – excellent range of institutional grade execution tools and simple apps for beginners

Customer Service: IBKR let themselves down a bit here. If you are a big customer you get an account manager, otherwise online support is slow

Research & Analysis: Some of the best education, screeners and market data for free on their website and integrated into IBKR platforms.

I’ve used Interactive Brokers for about 20 years now. I’ve interviewed their founder (Thomas Peterffy), their UK MD (Gerry Perez), they’ve been a competitor (when I was a broker myself), a customer and a partner over the years. I’ve traded live with real money when thoroughly testing their platforms.

This included an in-depth conversations with their Head Of Product (Steven Sanders) to get inside insights on the best parts of the platform and services that some clients may not know about. In this review, I lay out my verdict on Interactive Brokers as an industry expert so you can decide if they are the right investing and trading platform for you.

There is one thing that Interactive Brokers gives you above all other brokers, and that is control. You can invest and trade in pretty much anything you want, in pretty much any account type, pretty much how you want.

If you are not familiar with Interactive Brokers (IBKR) they are American, but global, as most American things are, with the notable exception of their news, which always seems to be local. But I digress, IBKR was one of the first brokers to offer electronic trading to the masses. They were founded in 1978 and if you want to know more about the man who founded them and is still running the show, read my interview with Thomas Peterffy, the founder and chairman.

Highlights: The key things to focus on if you are considering opening an account with Interactive Brokers is that:

They are cheap: No other investment or trading platform can match their discount commissions, FX rates and zero account charges

Huge market range: IBKR offer by far the best access to global stock exchanges around the world

They innovate and create :You can invest in so many different ways through IBKR, from their beginner IBKR LITE apps, to their institutional-grade desktop workstation trading platform. They have some of the most advanced and easy-to-use features available to private investors.

Interactive Brokers Account Types: IBKR offer by far the most types of accounts globally including regular investing account, active trader accounts, direct market access, futures, options and fractional stock trading

You can also earn money on your cash, you can buy bonds (high and low yielding), buy warrants, partake in placings, vote on company corporate actions. You can convert currency at 0.2%, which is cheaper than most specialist currency brokers or money transfer apps.

Foreign Exchange: Which actually segues me nicely to prove my control point. With most brokers you have to choose an account base currency (if you are in the UK that is probably going to be GBP) and when you trade, no matter what currency an asset is traded in your P&L will be converted to that base currency. But with Interactive Brokers you can run your account in multiple currencies.

So, if you put in GBP and trade the S&P for example, your P&L will be in USD. If you buy USD stock you get the option to attach a currency conversion to the transaction so you can convert exactly the right amount to cover the purchase, or you can choose to run a deficit in USD.

It’s not such an issue for small traders, as currency exposure, whilst important to be aware of, isn’t the most pressing matter. But if you are running a net flat long/short global macro portfolio, then keeping on top of your currency exposure could be the difference between making money or not.

Desktop Trader: Through ScaleTrader, (one of the founder’s favourite features) IBKR also gives you some very advanced order functionality, the sort you usually only get with professional trading systems like Fidessa (for stocks) or TT (for futures).

If you’re building a big position and don’t want the market to know you’ve got a big order to work, IBKR’s order ticket will let you gradually feed that into the market (but only charge you for the single order).

You can automatically drop bids and offers into the market based on time and price to take advantage of volatile markets. You can also set it to scalp for quick profits in choppy markets.

Pairs Trading: You can trade one stock against another automatically by spread, percentage or price.

Why is that important? Because it can help you build a market-neutral portfolio and when we asked the boss of IBKR the habits he saw in his most profitable customers, (referring back to our interview with him for the third time) he said the ones that traded one stock against another, often did well.

Interactive Brokers Universal Account: You can of course do these things with other brokers, but what you can’t do is do them all in one place.

For this review, I spent a while talking to Steven Sanders, IBKR’s head of Marketing & Product Development, and he said in the twenty years, he’s worked for Interactive Brokers the thing he’s most proud of (other than it being founder lead and therefore very little red tape when you want to get things done) is the implementation of the Universal Account, where everything is done from one account.

What’s amazing to me is that nobody else really offers it. Ten years ago when I was a derivatives broker at Man Financial, we offered everything that IBKR did, but all on separate platforms. We have a couple of big accounts, £20m upwards, that we were always trying to lure back from IBKR with our personalised voice brokerage where you could phone us up we’d take care of your complicated orders for you.

But times change, there is still demand for bespoke voice brokerage, but not as far as Interactive Brokers are concerned. They do offer it from specialists desks if needed, but most trading and investing is done online.

Demo Account: Interactive Brokers does have a demo account, but they call it a free trial instead. This is odd, because you don’t actually have to pay to have an account with IBKR. In fact, Interactive Brokers is one of the only trading platforms that does not have a custody fee for investing in a GIA, SIPP and ISA.

If you want to know more about that, you can listen to my podcast with Gerry Perez, the UK MD, who explains, how they offer such amazing market access for such little cost.

You get a cool $1m to paper trade with on the Interactive Brokers demo account or ‘Paper Trading version’ as they call it. You get access to the easy-to-use investors portal and the more complex IBKR TWS provides delayed market data, simulated trading and access to all of our unique tools and offerings, including the IBKR Risk Navigator, the Volatility and Probability Labs, Portfolio Builder, Research and News.

But, to be honest, I didn’t find the demo account very good. Lots of information was missing and I couldn’t place a trade. I’m not sure why, and actually, that’s going to be a bit of an issue for Interactive Brokers because demo accounts are a great way to get client’s interest. In a world where so many brokerages a vying for the same business, even small hiccups like that can cause a massive drop off rate in opening an account.

Usually, IBKR’s technology is first-rate, but the demo account isn’t up to scratch. I didn’t use the paper trading account, just the live trading platform with real market orders.

Customer Service At Interactive Brokers: It’s not all great, it takes a while to get through on the phone to customer service, and it has a slightly outsourced feel about it (if you know what I mean).

The desktop trading platform, despite its exceptional functionality, is also a bit ‘Windows 95’. But if you don’t need all the bells and whistles, the web based platform, or app has a more modern feel to them.

Options Strategy Builder: Options trading is gaining in popularity in the UK, mainly because of the press attention they derived from meme stocks (where US traders punt via options). But they are still a very complicated product. So what Interactive Brokers has down is create a Strategy Builder product, that essentially reverse the process of putting on options strategy trades.

You tell Strategy Builder what you think the market is going to do. For example, either, go up, stay still, not move for a while, or volatility will increase and it will create an options strategy around that. Instead of you having to know what strategy to put in place or working out the individual options legs.

IMPACT Ethical Investing: In tune with moving with the times, Interactive Brokers has also released the IMPACT app to help people investing in ESG and impact sectors, so they can put their money to good.

You can see the IMPACT dashboard on desktop, but it also operates as a standalone app that connects directly to your IBKR account and scores your portfolio based on how ethical the stocks you hold in it are. Ratings come from FactSet and Refinitiv, and there is this excellent feature that allows you to swap into more ethical stocks.

If one of your holdings is flagged as not that ethical, the app will suggest another one and at the click of a button, it will sell your shares and calculate how many new shares of a more ethical but similar company to buy and do it all for you. If you’re in the US, you can also make charitable donations directly on the app.

Interactive Brokers For Beginners: There is no doubt that Interactive Brokers is a proper trading platform, for those who know what they are doing and cater mainly to the more sophisticated investor. But they are making an effort to open their services up to the newer breed of investor and trader.

It’s standard now among many fintechs, but IBKR were actually the first to offer no commission trading. They also offer fractional shares through IBKR LITE and IBKR Pro accounts and have removed the monthly minimum account charge.

The hope of course is that by onboarding investors when they just start, they can look after their investments for the next 40 years, just as they have been doing for their existing clients for the last 40.

Interactive Brokers runs a Student Trading Lab where students from 600 schools and universities take part in a $1m paper trading account for the purposes of getting a better understanding of the markets. No broker these days can tell you what to buy or sell, but IBKR GlobalAnalyst helps you hunt out undervalued opportunities, across the world, not just in the US.

IBKR offer a Trading Academy, podcasts, webinars and blogs for beginners and experienced traders so that new customers survive the markets to become long-term clients.

Plus, they are cheap.

24-Hour ETFs At Interactive Brokers:Interactive Brokers has a list of 24 selected ETFs available to trade around the clock from Sunday evening, east coast time, through to the close on Friday, by adding these funds to its US overnight trading facility.