CHEK are implementing a 1:20 reverse stock split, to take effect on Friday (25th November) on the NASDAQ market. The reference price has been set in Israeli Shekels I think, so I am unsure what the USD equivalent will be on the day. I have no idea whether there will be any significant price movement either way as a result of the split. I would suggest that anyone with pending limit sell orders remove them in case they are triggered as a result of the split.
More info at:
Edit: the reference price is immaterial, essentially any holding will be divided by 20, and I think the Friday opening price will be 20x Thursday’s closing price.