And a couple of comments

"At Xebec, the company continues to make its clean energy systems at a profit, but it had to revise its guidance after it missed revenue expectations.

Some companies, such as Ballard simply don’t issue guidance. It’s been through a bubble in 2000 — the original dot-com bubble — when it’s share price surpassed $164 and then plummeted to less than a dollar and rarely broke above $5 in the ensuing two decades."

Hmm, ..."Xebec continues to make its systems at a profit."

"Had to revise its guidance after it missed revenue expectations?"??
The last guidance revision was upwards...

"For fiscal full-year 2021, Xebec is updating its previously announced guidance with revenues now expected to be at the top end of the range of $120.0 to $130.0 million from $110.0 to $130.0 million"

Ballard did indeed fall from $164 to less than one dollar after dot.com.
In fact it traded as low as 62 cents on November19, 2012.
Less than 10 years later it traded at $53.00.
That's what markets can actually do, and sometimes it happens.

Ballard actually did go from $164.00 to 62 cents. 
Everyone thought Ballard was toast.
Everyone hated it.

It has traded as high as $53.90 since then.
That's an 87-fold increase.

I think it was Filoux who asked if I had a $30 to $40 target within 4 or 5 years, before I banished it.

Absolutely I do.

Stocks make historic lows when everyone is fed up with them, and think it's over.
They always have and always will.

This is the stock market.