Sydney, Australia
Experience: Intermediate
Platform: Sierra Chart, IRESS
Broker: IB, IQFeed
Trading: ES, SPI, ASX stocks, options
Posts: 399 since Jun 2015
Thanks Given: 169
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Couple of things you might want to consider.
You don't have a volume study or a time and sales, so I'm not sure what you constitute as "large volumes".
The big bars during news don't really mean that there are big buyers/sellers moving the market, the big bars are caused by lack of liquidity during and after the news event, so even small lots can move the market quickly.
I'm not sure if classifying volume after a news event as manipulation, if you think of the process.
Before news -> market is at value area priced at point A
After news -> market is goes into auction mode to find new value area priced at point B
Since disclosure of news is online and everyone pretty much gets it at the same time, the volume from the news event is really just all market participants who are trading the news event trying to find a new area of value (point B). This includes a lot of retail and insto's all running the same way. Some will think it's higher, some will think it's lower, the majority will win. I'm not sure you can classify that as manipulation - if someone tries to manipulate the market the opposite way of value point B, they will get overrun by the general market. I think manipulation is more about insto's pushing the market to certain points at the expense of retails rather than the market trying to find value.
I think manipulation is probably more prevalent during times when there isn't news and the market is being pushed to stop loss areas to or held at areas to trap people.
Anyhow that's my view, good luck with your thesis, great topic to pick I think.
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