I provided some details earlier in the thread. See post #289, for example.
Roughly, I wrote covered calls option on about $1.5M worth of stocks, not on all my stock holdings. These are usually the stocks with higher volatility than the entire market, such as semiconductor, energy, and mining stocks. Occasionally, for a lark I would write a call on sleepy stocks such as pharmas (JNJ, PFE, MRK), or Walmart.
Some parts of the equity holdings I cannot write calls on because they are MFs, or have no option, or the options have too low a premium to be worthwhile.
I hold a 7-figure cash position, but do not commit more than $500K to writing puts. Not all my cash can be used for put covering, such as I bond, and 401k Stable Value fund.
As I explained often, it's the total return of the entire portfolio that counts. I mentioned the dollar value to show that my trading activities pay well per the devoted time.
For the last 3 years, a person could have the same total return if he invested 100% in the S&P. However, I am only 60 to 80% in stocks.