@Zzzz1 No offense taken. With exposing your background, it's now obvious to me how you cannot understand how "modern" tape readers approach markets.
Look: you guys look into microstructure. Position in queue is everything for you and basically any HFT is more or less trying to emulate the old floor trading game: Either step in front of a big order and ride it for a couple of ticks OR fill the idiot who doesn't know the correct price at the given timestamp and arb it OR you try to game the book, imbalances or any other given special structure in a market. HFT's don't care if a market goes up and down as long as they are the first to get filled and first to dump the position on to the guy behind them in the queue for a scratch.
That's what the SOES - Bandits started, daytraders such as the SWIFTies continued and now HFT's took over. The edge you guys have is a technology edge and an infrastructure edge, just like the SOES guys had. There is a lot of skill involved in developing the infrastructure but no skill when it comes to actual trading. You sit and monitor your algo.
I once had the pleasure to listen to Haim Bodek in a webinar and he was exactly like you. "How can you guys make money off of charts or the orderbook since the computer can do it much faster than you?" He just did not get it.
Now here is the thing: Tape Reading has nothing to do with the way a HFT trades. Zero, nada, nill!
In short: HFT's game microstructure, todays tape readers game other players.
We have an edge over the computers as we rely on parameters that cannot be quantified and abuse basic human behaviour. Because no matter how you twist and turn it, if someone needs to get in and out of an asset with size that cannot be soaked up by regular volume, he WILL tip his hand and it doesn't matter if he uses an algo or pushes buttons
If you do it right, you are able to identify if:
1. There is a major player trying to execute. If there is one, you will find him. He can hide his orders or split them up, but he cannot hide the turnover he does
2. He is executing manually or via algo. If he is using an algo, it is most of the time easier to spot him. Just like in a videogame, the AI executes very fast and very efficient but he always does the same thing. Record a couple of sessions worth of live DOM and you will see the same algo's over and over again.
By watching if, how, where and how much size a market moving player transacts, you can make an educated guess about his intentions and thats how you can make money reading the tape. It's NOT about gaining an edge for a couple of cents, it's about sitting and watching - often for hours - and collect bits and pieces of information untill you have enough to strike.
It's comparable to poker where you can get an edge over the other players by watching their betting pattern in a hand.
So for example a stock has no news but trades double it's average volume on a given day and has a strong directional move to the downside on lots of small prints, but suddenly momentum stops and it gets choppy. Thats a first hint. Then you see big block orders transacting while overall volume dries up. Second hint. Stock moves back to VWAP during lunch hour on no volume and you see a drilling algo eating into refreshing offers just below VWAP, third hint.
At this point you might guess that someone is trying to accumulate stock, but you still do nothing. At 2pm stock rallies over VWAP and offers get taken out with 1k blocks up to a certain price, above that price there is no buying and stock drops back to VWAP where 1k orders start to lift offers again. You get long a small position at the price where the buying starts.
One hour befor the close stock is higher and you see an obvious iceberg on the bid, while every other stock in the sector tanks. He drops once or twice but takes every offer below and puts his iceberg back up 5cts higher. 30 mins before the close SPY and sectors rebound and the iceberg is still there. At this point you add to your long position up to max size and ride the upmove as long as the desperate guy is taking out every single offer on his way.
That's a possible scenario a tape reader is interested in. HFT's either don't give a fuck because they are trading the inside market 250,000 times a day or they can't capitalise on it because they cannot program an algo that puts the puzzle pieces together.
The only way HFT's compete with the tape reader here is when he executes. He probably gets spiked out once or twice or his fill is a couple of cents worse. But that's ok, because he is risking 10-20 cts to make 1$ and not 2cts to make 10 cts like ten years ago.
In short, I can see, where you come from. But you have to accept the fact that there are other trading styles out there that require efforts on a different level than just being fast. So believe it or not, as long as there is a tape and a book - consolidated or fragmented - tape reading will work....and that's the reason nobody with more then two brain cells trades retail FX. There is no information flow, there are no prints there is nothing you can collect information from besides a chart moving up and down