Some food for thought for you guys as I study VAR/VECM and time varying volatility.
Check to see if the past earnings move could have been a structural shift in the earnings distribution. I'll use STMP as an example, now that I understand what a structural shift is we have actually seen this everywhere (KHC, FL, BBBY etc..)!
Here are the historical Close to Close move for STMP. Prior to the extremely large move, the probability of a move that size was extremely small, however, once that move occurred it clearly demonstrated a shift in the earnings distribution. The next 2 earnings moves were also massive relative to historical moves. This shows how the earnings distribution for STMP changed. What I am curious to know is how do we identify a structural change in the opposite direction? Ie. If a company usually moves 20% on average with the smallest move being 6% and this earnings they only moved 2% after earnings, has there been a structural shift?
STMP
Hi TBS
Wow yes it looks like a big indicator. So I guess you're looking for the big EPS changes which leads to smaller jumps. I'm guessing the market sees the profitability of the company (+ve or -ve Current EPS), so when the official Earnings time arrives there's little surprise in the market (... is my thinking correct as I know little about EPS?).
But what is the "abs 4 week EPS change"? Is it the 4 week absolute change in "Current EPS" estimates leading up the official Earnings announcement? ... and where does one get data for this ... the Quandl Zacks data looks a little pricy?
I'm catching up as I've been distracted getting a business off the ground.
OM sent me a data set with a bunch of data for the 4 week eps change. I have it cleaned but have not looked at the predictability yet. I am currently working on my modelling/forcasting skills so I have not looked into it yet. Yes, it is the abs 4 week eps change. Zacks data is pricey, yahoo finance offers that indicator for free. However, it is probably useless without historical data. A 5% eps change on NFLX is much different than a 5% eps change on AAPL.
Edit* Here is another example with FL, sorry I dont have 10 years of data to show but that first large move of 18% for Footlocker was actually a huge move relative to it's past 12 quarters (almost 2x the size of the second largest). Look how ever since that day, the whole distribution of FL changed. This was during the retail meltdown. Scanning for stocks (ULTA) that just had a huge earnings move could be a great long gamma trade for the next earnings. The implied Move is always slow to adapt!
*Double Edit. Here is ULTA, this totally could be a structural shift here. What do you guys think?