Derived Indexes, rules and calculations

[alexsymbols]

The essentials of Derived Indexes calculations are :

• stock market benchmark indexes
• a list of stocks
• sum of individual stock's rise percentage
• sum of individual stock's fall percentage

The calculation rules of Derived Indexes are :

• The initial value of Derived Index is being reset to stock market benchmark index of the first trading day of each month
• If the summation of rise% > the summation of fall%, then Derived Index = Previous day's Derived Index x [1 + (rise%/fall%)%]
• If the summation of rise% < the summation of fall%, then Derived Index = Previous day's Derived Index x [1 - (fall%/rise%)%]
• If the summation of rise% = the summation of fall%, then Derived Index = Previous day's Derived Index

[alexsymbols]

There are five columns of each Derived Index :

• Day : simple and direct
• rise/fall/unchg, amt & % : sum of rise and fall, both in amount and percentage; sum of unchanged in amount
• rise/fall : sum of rise in percentage and/or sum of fall in percentage
• Derived Index : xxxxx : simple and direct
• Announcement : important events such as change of components of the list, etc.

[alexsymbols]

We, the Alex Symbols group, decided to size-down each Derived Index Portfolio from 180 counters to 140 counters, starting 6/Dec/2021

The decision of using 140 counters instead of 180 is due to the covid-19 pendemic.

This man-made pendemic has created deep impact upon stock markets worldwide, we decided to size-down the portfolio with one reason : NOT enough counters to pick.