Guys most important part, think of the big picture: a) do you think the investment strategy is the right one? b) use mathematics into perpetuity. Eventually assuming continuious buy backs, there will be a point in time where NTA equals share price.
Last couple of months enabled me to buy/sell for tax purposes. Lower my effective net price, but claim a bit of tax losses (important for tax management purposes).
But overall I am accumulating on price weakness vs NTA.
Also for me personally, assists in creating diversification. MGF invests in A-grade companies. That's their investment style. So for my this is portfolio diversification as many of the companies I invest in are not A-grade: cycle, average companies ect.