Does Vanguard accurately track the performance of an account even after I sell a position for a profit (or loss) and buy something else?
For example, I own VTSAX in a Rollover IRA and am up 15% in that position but want to exchange the fund for VTWSX (Vanguard Total World). I also own a bond fund in that Rollover, and have a Roth IRA and Brokerage account that all factor into my overall portfolio performance that Vanguard reports out to me. Do I lose anything in terms of the portfolio performance tracking over the long term if I exchange that fund? Will my overall portfolio still account for the 15% increase I had before selling?