Hi,
It seems like there are time frames in which FOX isn't present in the fundamentals data -- that's the underlying cause of the error. When I query the data for the FOX ticker in research and ask for data back on a quarterly basis, I'm only getting data back to 2013:
df = get_fundamentals(
query(
fundamentals.company_reference.sid,
fundamentals.valuation.market_cap
)
.filter(fundamentals.company_reference.sid==5530) # the sid for FOX
, "2015-09-20", '40q')
df.loc['market_cap']
which gives me
security Equity(5530 [FOX])
algo_date
2013-09-23 00:00:00+00:00 72460104733
2013-12-23 00:00:00+00:00 75368065061
2014-03-24 00:00:00+00:00 73457444451
2014-06-23 00:00:00+00:00 76141466343
2014-09-22 00:00:00+00:00 74308611650
2014-12-22 00:00:00+00:00 78482878983
2015-03-02 00:00:00+00:00 71852749526
2015-06-22 00:00:00+00:00 67464131631
2015-09-18 00:00:00+00:00 54666806887
This matches a corporate action in 2013 when Newscorp went from the NWS ticker to the FOX ticker.
We'll need to dig a bit more as to whether this corporate action is being handled correctly in our data.
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