This question was posed to me yesterday by a customer. Rather than answer his question directly, I thought I'd put out a blog post.
The short answer is: Yes and No.
Order Flow itself is simply information. Just like charts, it can be used in a number of ways, some good and some bad. But let's first break down order flow into it's components so we all agree what we are talking about:
Order Executions/Tape Reading - This aspect is the real flow of orders. It's the information we see in Time & Sales, Footprint Charts, Cumulative Delta. It is looking at market orders, either as they execute or historically. I guess this is the "true order flow". Every trade is a buy and a sell. We look at market orders because we consider them to be more aggressive. When someone trades with a market orders, they are giving up a price to get an instant fill. Limit orders on the other hand just lazily sit there waiting for a market order to hit them. Often these are market makers with no directional conviction. So we see market orders as being more significant.
But we don't use these in isolation.
Volume Profile/Positions - The tape reading part helps us assess various things like momentum, traders getting stuck, balance of trade BUT the volume profile helps us understand where people are positioned and likely to get stopped out. I sometimes call this "Order Flew". It's important to know when trades will be "washed out" - for example - if we have a volume cluster on the S&P500 Futures and the market moves up 100 points and back down to it, it's unlikely short term traders on either side that were positioned there will still be there. But recent, nearby volume helps us assess areas of positions.
Market Depth - The bids and offers, the lazy passive orders waiting to be hit. This is part of the story but in terms of overall importance, I'd put it at around 20% at most. For example - if you return to the high of the day on any market, the offers will be quite large directly above the high. It means nothing at all. It's just a quirk of the market. It does not help you tell if a price will hold. On the other hand, if you see large depth and as we approach it, we see more added to the depth in front of that price, it means others are front running that depth and that is a useful bit of information.
This is the key - it is all just information. Just like price charts are information. When people look at Order Flow, they consider it to be a technique more than a set of information. They look for things like iceberg orders and decide to make a one rule trading system to fade every iceberg, For these people - yes, order flow is overrated because they are trying to ignore everything else going on in the markets and construct a trading system a chimp could execute.
For those looking to improve a decent trading approach, the best thing to focus on in Order Flow is momentum. Once you can read momentum you can:
That's perhaps the easiest way to use order flow because momentum is easier to read. It's about the market continuing to do what it's already doing. On the other hand, reading a turn in the market with order flow takes a higher level of skill and a little longer to learn.
Order flow can't put lipstick on a pig. It won't help you 'improve' something that doesn't work anyway, which is why whenever someone calls me, the first thing I ask is what they are currently doing and we discuss whether they need a reset or whether it will actually help.
When Jigsaw started back in 2011 - we were one of the first in the space and certainly had the best education. It was always going to attract the underbelly of the trading education/tools world and now we see stuff out there that is so complex but so impressive and futuristic that new traders are drawn to it like moths to a flame.
So here's my advice when looking at Order Flow
It is hard to see how a set of information could be overrated. It is true that some methods of presenting this information are better than others. It is also true that some people simply get on better with different tools (e.g. Footprint vs DOM).
There's a middle ground between complexity and simplicity that will leave you making consistent decisions where you improve over time. For those people, Order Flow will be way underrated because they will be the one's getting the most out of it.
Those that jump in with both feet on day one and those that have 100 different tools up, for those, it's a painful experience.
Keep it simple and manageable. Start with momentum reading and build from there. You will never look back.