Thanks for the link Peter. I spent the weekend reading that link, watching YouTube videos and reading other websites and I think I've got it.
Just looking for a bit of a sense check using QPP as an example:
So on this screen you can currently sell 841,302 shares at 19.75 and buy 745,185 at 20.25.
Once these shares have been bought or sold you then buy or sell at the next best price (in this case 19.5 and 20.5).
If either side of the order book at 19.75/20.25 is depleted and the next-best price is used, the share price will move one way or the other as it's a mid-point between the bid and ask.
If we look at the depth of the market at the bottom — there are nearly twice as many sell orders (9.3 million shares) than there are buy orders (5.1 million).
All things being equal, it would take longer to deplete the sell order side than the buy order side and the share price should drop.
However, this doesn't take into account supply and demand…
As we can see from the current trades, there is twice as much buy volume as there is sell volume.
Under normal conditions you would expect the share price to rise because more people are buying (high demand).
However, because these buys are being supplied by the high number of sell orders on Level 2 the price is remaining relatively static, if not dropping.
It's dropping because even though there is less sell volume, there is also a thinner buy order book so each block of share price gets depleted quicker.
What's worse for QPP is that even after they clear the 750k sell orders at 20.25, there's another 500k waiting at 20.5 OR as I've noticed recently, when it starts to look like the sell orders at 20.25 are about to run out, a huge chunk more gets added.
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Towards the end of the day yesterday the momentum shifted and the buy order side of L2 was stronger than the sell order side and there was more buying volume than selling volume so the share price jumped up a bit and it's happening again now around 14:00.
I appreciate L2 is just a snapshot of the present and L1 is a record of what's already happened.
Just because there are orders on the L2 books doesn't mean there is anyone to actually fill them so we can't predict what's going to happen, but L2 does give an idea of where the support and resistance is / should be at any given time.
Charts and TA suggest where the support and resistance has been in the past and 'could' be in the future.
Can someone confirm whether I've got that right or whether I'm talking ****.
Thanks!