Hi DavidJ,
Thanks for that information, that is very helpful. That is saying the tax basis is divided up based on market value of each DOW and DWDP right after the distribution. (It is not divided up based on the share balance, so it won't be 1/4th of the original basis.) I'm not sure exactly what values they will use for market value after the distribution, but assuming they use the market value as of the close on Apr 1, 2019, it would be like this:
DWDP close as of 4/1/19: $36.60/share
DOW close as of 4/1/19: $53.50/share
So, you will own 3 shares of DWDP @ $36.60 for each 1 share of DOW @ $53.50 after the distribution. We can calculate the ratio of market value of DOW / Total_Mkt_Value as:
53.50 / (3 * 36.60 + 53.50) = 0.32762
So, assuming those share prices get used, 32.762% of your original DWDP basis would move to DOW. Please don't use this number, but wait for more official information from your broker. This is just meant to give you an idea of how it will be determined.
Interestingly,
Yahoo is reporting a split in DWDP on Apr 2 with a ratio of "1000/1487 Stock Split". This is a ratio of 67.249%, so 67.249% of DWDP leaves 32.751% for DOW, which is pretty close to our calculated 32.762% number. Again, I would wait to get the exact amount of transferred basis from your broker, but it should be in this ballpark.