 Tiaa Fsb lowered its position in Vanguard Mid-Cap Index Fund ETF Shares NYSEARCA:VO by 2.2 in the 3rd quarter, according to the company in its most recent disclosure with the Securities and Exchange Commission SEC. The fund owned 3,313,239 shares of the companys stock after selling 74,504 shares during the period. Vanguard Mid-Cap Index Fund ... 