Remember that when someone discloses the percentage held in Steem or SBD in its own portfolio, and ​since one's Steem account holdings are​ public information (most people keep their Steem/SBD on the Steem​ blockchain), he/she may also at the same time be revealing a better picture of the total value of one's entire crypto assets​. I would recommend against sharing this personal info for obvious privacy & security reasons.