Ann: S&P DJI Announces March 2022 Quarterly Rebalance, page-38

So, to give a little context to this the ASX200 has a market cap of roughly 2 Trillion.
The S & P indices work on a average market cap volume weighted 6 month average.
Rough and ready $1b market cap for MSB for index weighting purposes.
0.05% of the index.
Quarterly rebalance, so every time the market cap was lower, MSB got reweighted down over the last couple of years, so the index funds have already been steady sellers every quarter.
The index funds are the only ones that have to sell, its mechanical.
Largest ETF SPDR code STW, market cap $4.6b
0.05% of $4.6b. $2.3m
There are obviously others but on the day best guess enforced selling from the ETF's somewhere around $5m

It was different when we went in, share price was mid $3,s for starters so mkt cap of $2.5ish, so 2 or 3 times the volume, and s/p hot not cold.

Suspect there may be some short term pressure, but $5m unlikely to make much of a dent IMO.
If you believe they have any chance of getting approval, for anything, possibly just a short term buying opportunity.