"... the so-called Epps-eflect [16], namely that in high-frequency
data the cross-correlations between stocks are much less pronounced than in, say, daily ones:
Correlations reflect the similarities in how different stocks react to external effects and this is
covered for short time horizons by noisy internal dynamics.
These results offer a coherent qualitative picture about market dynamics. The impact of
incoming news needs a finite time to diffuse. Hence, on short time scales, the response to
them is small. The factor that determines the fluctuations of trading activity is internal: it
is the trading mechanism itself. On daily or longer scales, however, the internal fluctuations
have smaller importance, and the market tends to move with the global activity. In periods
of "business as usual", the natural human scale of one day seems to be needed to reach a
kind of coherence: News and trends can be evaluated, information is exchanged and collective
decisions are made. Interestingly, the scaling of asset return distributions [11] also breaks
down on the scale of one day, see, e.g., [17].
Hey Bit ....Quote from Bitstream:
funda are good for pin pointin' stocks where da action might be...direction is dictated by other more technical means. u can also find 'em lookin' da other way round..i.e: stocks that have a high trade count in pre-mkt are usually on da news/upgraded or wha'eva'.
Quote from rcj:
cnms2 ...
Maybe we can talk Bitstream into posting some of his poetry on ET.
BTW ... When you have time could you maybe tell us a bit about the paper you posted.
thnaks for posting.
... rj
ok, Thanks, cnms.Quote from cnms2:
I found it interesting because it shows that there are different factors that dominate the intraday time frames compared to the longer time frames. This has implications in selecting the best time frame and market for your trading method: trend following, fading, etc.. corrected link
Quote from FaderTrader:
The only rationale that I can think of for knowing fundamental data about stocks that you daytrade would be to try and time when price action bleeds into a time frame when large buyers or sellers might come into the market. But beyond that, I just can't agree that knowing fundamental valuations is of value in daytrading.