"Chesapeake Energy Shares Halted By NYSE Amid Reports of Chapter 11 Bankruptcy Plans" (CHK)

The worst words in commodities trading (other than "liquidation only" when you are long) are "lock limit up" or "lock limit down".
This is the equity equivalent for longs.
From TheStreet:

Martin Baccardax

Updated:

Jun 9, 2020 9:33 AM EDT

Shale gas pioneer Chesapeake Energy, once worth $37.5 billion, has warned of a possible Chapter 11 bankruptcy filing in order to restructure some $9 billion in debts.

Chesapeake Energy Corp.  (CHK) - Get Report shares plunged lower Tuesday, before being halted by officials on the New York Stock Exchange, amid reports that the shale oil and gas producer is preparing to file for Chapter 11 bankruptcy protection....MORE

Recently:
"Chesapeake Prepares To File Bankruptcy After Stock Surges 300%" (CHK)
ICYMI: "Chesapeake Energy's stock rockets, triggers 5 trading halts for volatility" (CHK)
ICYMI: "Chesapeake Energy's stock plummets as price target slashed to zero amid 'strong sell' rating at CFRA " (CHK)
Natural Gas: Chesapeake Says It May Not Be a "Going Concern" (CHK)
And dozens more over the years, use the 'search blog' box if interested.
Over the years:

FinViz

That 1 for 200 reverse split is how you get a $7000 stock.