With the sudden drop in the stock market triggering panic selling by many - many people who sold have crystallized large capital gains they have earned since election day. Even though the market has bounced back and some might be buying back in - the fact is now they have realized a capital gain they have to pay tax on the gain. Hence lots of revenue generated for the IRS. The cash register rang.
It is the same in the crypto-currency markets, where prices have been dropping. For those selling, many are sitting on massive gains even if they only bought in six months ago. Again Ka-ching. The cash register rings for the IRS.
Lets hope the government uses the windfall to reduce the deficit or to fund more tax cuts.
Do not let them waste the windfall on wasteful government programs loaded with pork.