Answer:
January 1 of next year
Step-by-step explanation:
Selling now will make the entire gain taxable to his incoe tax bracket
While the long-term captial gain have a different rate.
As 2019 the current brackets for long-term capital gaisn are:
0% $ 0 to $ 39,375
15% $39,376 to $434,550
20% $434,551 or more
As Shaun gain is less than 39,375 it will be subject to no taxation thus, paying no taxes.