"paint down by eod" is when someone sweeps in at the last second and drops the stock price so as to make the price drop right at the end of the day when no one has time to bring it back up so then the news cycle is that it closed down.
EOD stands for "End of Day".
Shorters and others fighting this stock can turn a good day bad at the last minute, so while it was a good day, it got a paint job over it that makes it look bad.
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