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Wild Price Swings in Shareprice

I've found some wild price swings in the share price data - some might be correct and others are probably errors. These are much harder than previous issues to deal with. Let me know if you want me to email you the full report...

Errors for: GOOG (18)
Major Price Swings (±35%) (1)
2014-03-26: 281.6541 <*> 558.46

GOOG;18;2014-03-26;289.1286;281.5371;291.5072;281.6541;563.87;;5179200
GOOG;18;2014-03-27;568.0000;552.9200;568.0304;558.4600;556.93;;13100
GOOG;18;2014-03-28;561.2000;558.6700;566.4300;559.9900;558.46;;41200

Here the price *doubles* from one day to the next. Maybe it did, the only other explanations I can come up with is a split issue.

Others, such as these two might be correct;

Errors for: BRID (33021)
Major Price Swings (±35%) (2)
2009-03-09: 2.53 <*> 4.2
2019-01-18: 23.55 <*> 32.76


Errors for: AMSC (33387)
Major Price Swings (±35%) (4)
2011-04-05: 248.8 <*> 144.7 // looks like a possible split issue?
2015-04-23: 10 <*> 6.88 // might be legit?

Errors for: APIC (34899)
Major Price Swings (±35%) (2)
2015-04-23: 0.8098 <*> 15.4

APIC;34899;2015-04-21;0.8098;0.8098;0.8098;0.8098;0.81;;858
APIC;34899;2015-04-22;0.8098;0.8098;0.8098;0.8098;0.81;;36090
APIC;34899;2015-04-23;0.8098;0.8098;0.8098;0.8098;0.81;;27110
APIC;34899;2015-04-27;16.4700;15.0300;16.5000;15.4000;0.82;;7649
APIC;34899;2015-04-28;15.1100;14.7500;15.7900;14.7500;0.82;;59886

A good day to be owning APIC!

2016-11-07: 17.35 <*> 1.584

APIC;34899;2016-11-02;17.3500;17.3500;17.4000;17.3500;1.57;;910499
APIC;34899;2016-11-03;17.3500;17.3500;17.4000;17.4000;1.57;;71927
APIC;34899;2016-11-07;17.4000;17.3500;17.4000;17.3500;1.58;;124865
APIC;34899;2016-11-08;1.5750;1.5750;1.5840;1.5840;1.58;;32743
APIC;34899;2016-11-09;1.5840;1.5840;1.5840;1.5840;1.58;;0
APIC;34899;2016-11-10;1.5750;1.5670;1.5750;1.5750;1.58;;27062
APIC;34899;2016-11-14;1.5671;1.5670;1.5670;1.5670;1.57;;88510


a very bad day to be owning APIC!

Errors for: ENS (35886)
Major Price Swings (±35%) (1)
2011-10-19: 1.993 <*> 19.43
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