FNMAS is like 23rd in share volume but 2nd in money volume.
Of the top 23 stocks, only one has a share price above a buck: FNMAS. Most of them are fractions of a penny.
Then think about FNMAS's daily volume. Most days it's languid, boring, MM's trading back and forth; and the stock price never deviates more than 5% the entire day. Other days, we have million share transfers that truly aren't "market activity". I guess that's two big boys making a deal on the side or something. Something the market never touches.
In short, there is no real money turning over on FNMAS / FMCKJ, let alone the illiquid models.
When FNMAS (and other $25s) drop below a $1.30, buy; when it gets above $2, time to seriously consider selling. Rinse and repeat.
Considering by your own admission, you're an "old" 75 (forget age), it might be better to just rinse and walk away.