(Great suggestion across the transom from a long-time reader. Who remembers watching the CNBC ticker in the afternoons for the closing stock prices back before the innerwebz? Remember the eighth and sixteenth quotes?)
You seem to keep a running list of financial market solutions/changes after some economic ‘reset’ (e.g., open outcry, mark to market, etc). As a former NASDAQ market maker in the 90s, one of my solutions is to go back to increments of 1/8 for equity prices (or 1/16 for sufficiently low price stocks). This would solve our seeming indifference to being sheared on trades by algos or banks by .05 or .01 or even thousandths of a dollar in some cases. Being robbed by a more significant amount like an 12.5 cents would certainly make a buyer or seller of stock more likely to notice and resist.
I look sentimentally back on the 1/8ths. It was something that made Wall Street unique. Remember asking what the market was and hearing “1/8 to 3/8, 400 by 200?”
If you see merit in this small improvement please add it to your list.
God bless from a huge fan,
Polack in NY