VGI is trading today at a little premium to the January NTA. I'm...

VGI is trading today at a little premium to the January NTA. I'm a novice but I can't see any reason for the premium to NTA. Circa 50% of capital is invested in USD and that has not changed much in the preceding 30 days (-1.04%). The other major cause for concern is the well known CTD short position which has rallied 21% in last 30 days (-21%). The other items make up the remaining ?% of the fund. These companies have been mentioned previously in newsletters and it is not known if still held. We were all told that CME and Medibank were core positions and one of these is negative for the last 30 days. GE, Zillow and Spotify look great but as I said unsure of the holding amount. I reduced my holding significantly at $2.50 and hope it is not a mistake. What am I missing for this track proven manager?